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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

[pt] AVALIAÇÃO DO POTENCIAL DE GERAÇÃO DE BIOGÁS DE RESÍDUOS SÓLIDOS URBANOS DE DIFERENTES IDADES / [en] EVALUATION OF THE POTENTIAL OF BIOGAS GENERATION FROM URBAN SOLID WASTE WITH VARIABLE AGES

THAIS CRISTINA CAMPOS DE ABREU 30 April 2019 (has links)
[pt] Esta tese tem por objetivo avaliar o potencial de geração de biogás, por degradação anaeróbica de resíduos sólidos urbanos em perfis de um aterro sanitário. As amostras foram obtidas a partir de perfis de sondagem compostos por materiais dispostos em épocas distintas e com diferentes idades em relação a seu estágio de decomposição. Foi elaborado protocolo específico para determinação da temperatura, pH, composição gravimétrica, distribuição granulométrica, teores de umidade, de matéria orgânica, de sólidos voláteis e de lignina nessas amostras e criada metodologia com o uso de dados topográficos, para a determinação das idades de disposição dos resíduos. Foi ainda desenvolvido equipamento eudiométrico para a determinação potencial bioquímico de metano, com medidas de variação volumétrica e avaliação do prognóstico de geração de metano por modelos de primeira ordem mais consagrados (LandGEM e IPCC). Os dados experimentais indicaram que poucas propriedades apresentaram uma correlação com o perfil e com a idade dos RSU, devido à alta heterogenidade do material. Embora o potencial de biogás e a idade dos RSU não tenham apresentado correlação entre si, o material mais novo, de quase um ano, produziu maior quantidade de biogás e houve uma redução de 78 porcento dessa produção para a do material de 3 anos. Verificou-se uma relação entre o teor de matéria orgânica e de sólidos voláteis com a produção de biogás para materiais com até 4 anos. O prognóstico da geração de biogás aplicando os dados experimentais aos modelos EPA e IPCC foi menor do que quando adotados os parâmetros default. A retroanálise segundo o IPCC, com os dados experimentais, indicaram valores de DOC muito inferiores aos usados com default, resultando em menores emissões de biogás. / [en] The aim of this thesis is to evaluate of the potential biogas generation formed in the anaerobic phase from the degradation of urban solid waste with variables ages of deposition in a sanitary landfill. The materials were obtained from borehole profiles, being composed of materials disposed at different times and with variables ages in relation to their state of deposition. The knowledge of the physic-chemical characteristics is essential for assessing the biochemical potential of gases. Thus, it was developed: (i) a protocol for determination of properties, such as temperature, pH, gravimetric composition, particle size distribution, moisture content, organic matter content, volatile solids content, lignin content; (ii) one eudiometer device was constructed, with volume variation measurements for determining the biochemical methane potential; (iii) methodology to identify the ages of waste disposal by topography; and (iv) a methodology for predicting methane generation by well-known first order models (LandGEM and IPCC). Due to the high heterogeneity of the material, the experimental data indicated that few properties showed a trend in their behavior with respect to the profile and the age of MSW. Although the potential for biogas generation and the age of MSW showed no correlation, the newer material (almost one year old) showed higher biogas production. Gas production related to the 3 year old material was 78 percent lower compared to the newer one. Even with limited data, there is a relationship between the content of organic matter and/or volatile solid matter with the production of biogas for materials with more than 4 years. The prediction of biogas generation by applying experimental data was lower compared to the results applying EPA and IPCC models. The backcalculation analysis with the experimental data determined of IPCC indicated much lower DOC values than those used with the default, resulting in lower emission of biogas.
32

The Impact of Cyberattacks on Safe and Efficient Operations of Connected and Autonomous Vehicles

McManus, Ian Patrick 01 September 2021 (has links)
The landscape of vehicular transportation is quickly shifting as emerging technologies continue to increase in intelligence and complexity. From the introduction of Intelligent Transportation Systems (ITS) to the quickly developing field of Connected and Autonomous Vehicles (CAVs), the transportation industry is experiencing a shift in focus. A move to more autonomous and intelligent transportation systems brings with it a promise of increased equity, efficiency, and safety. However, one aspect that is overlooked in this shift is cybersecurity. As intelligent systems and vehicles have been introduced, a large amount of research has been conducted showing vulnerabilities in them. With a new connected transportation system emerging, a multidisciplinary approach will be required to develop a cyber-resilient network. Ensuring protection against cyberattacks and developing a system that can handle their consequences is a key objective moving forward. The first step to developing this system is understanding how different cyberattacks can negatively impact the operations of the transportation system. This research aimed to quantify the safety and efficiency impacts of an attack on the transportation network. To do so, a simulation was developed using Veins software to model a network of intelligent intersections in an urban environment. Vehicles communicated with Road-Side Units (RSUs) to make intersection reservations – effectively simulating CAV vehicle network. Denial of Service (DoS) and Man in the Middle (MITM) attacks were simulated by dropping and delaying vehicle's intersection reservation requests, respectively. Attacks were modeled with varying degrees of severity by changing the number of infected RSUs in the system and their attack success rates. Data analysis showed that severe attacks, either from a DoS or MITM attack, can have significant impact on the transportation network's operations. The worst-case scenario for each introduced an over 20% increase in delay per vehicle. The simulation showed also that increasing the number of compromised RSUs directly related to decreased safety and operational efficiency. Successful attacks also produced a high level of variance in their impact. One other key finding was that a single compromised RSU had very limited impact on the transportation network. These findings highlight the importance of developing security and resilience in a connected vehicle environment. Building a network that can respond to an initial attack and prevent an attack's dissemination through the network is crucial in limiting the negative effects of the attack. If proper resilience planning is not implemented for the next generation of transportation, adversaries could cause great harm to safety and efficiency with relative ease. The next generation of vehicular transportation must be able to withstand cyberattacks to function. Understanding their impact is a key first step for engineers and planners on the long road to ensuring a secure transportation network. / Master of Science / The landscape of transportation is quickly shifting as transportation technologies continue to increase in intelligence and complexity. The transportation industry is shifting its focus to Connected and Autonomous Vehicles (CAVs). The move to more autonomous and intelligent transportation systems brings with it a promise of increased transportation equity, efficiency, and safety. However, one aspect that is often overlooked in this shift is cybersecurity. As intelligent systems and vehicles have been introduced, a large amount of research has been conducted showing cyber vulnerabilities in them. With a new connected transportation system emerging, a multidisciplinary approach will be required to prevent and handle attacks. Ensuring protection against cyberattacks is a key objective moving forward. The first step to developing this system is understanding how different cyberattacks can negatively impact the operations of the transportation system. This research aimed to measure the safety and efficiency impacts of an attack on the transportation network. To do so, a simulation was developed to model an intelligent urban road network. Vehicles made reservations at each intersection they passed – effectively simulating an autonomous vehicle network. Denial of Service (DoS) and Man in the Middle (MITM) attacks were simulated by dropping, and delaying vehicle's intersection reservation requests, respectively. These cyberattacks were modeled with varying degrees of severity to test the different impacts on the transportation network. Analysis showed that severe attacks can have significant impact on the transportation network's operations. The worst-case scenario for each attack introduced an over 20% increase in delay per vehicle. The simulation showed also that increasing the number of attacked intersections directly related to decreased safety and operational efficiency. Successful attacks also produced a high level of variance in their impact. One other key finding was that a single compromised RSU had very limited impact on the transportation network. These findings highlight the importance of developing security and resilience in a connected vehicle environment. Building a transportation network that can respond to an initial attack and prevent it from impacting the entire network is crucial in limiting the negative effects of the attack. If proper resilience planning is not implemented for CAVs, hackers could cause great harm to safety and efficiency with relative ease. The next generation of vehicular transportation must be able to withstand cyberattacks to function. Understanding their impact is a key first step for engineers and planners on the long road to ensuring a secure transportation network.
33

An Empirical Method of Ascertaining the Null Points from a Dedicated Short-Range Communication (DSRC) Roadside Unit (RSU) at a Highway On/Off-Ramp

Walker, Jonathan Bearnarr 26 September 2018 (has links)
The deployment of dedicated short-range communications (DSRC) roadside units (RSUs) allows a connected or automated vehicle to acquire information from the surrounding environment using vehicle-to-infrastructure (V2I) communication. However, wireless communication using DSRC has shown to exhibit null points, at repeatable distances. The null points are significant and there was unexpected loss in the wireless signal strength along the pathway of the V2I communication. If the wireless connection is poor or non-existent, the V2I safety application will not obtain sufficient data to perform the operation services. In other words, a poor wireless connection between a vehicle and infrastructure (e.g., RSU) could hamper the performance of a safety application. For example, a designer of a V2I safety application may require a minimum rate of data (or packet count) over 1,000 meters to effectively implement a Reduced Speed/Work Zone Warning (RSZW) application. The RSZW safety application is aimed to alert or warn drivers, in a Cooperative Adaptive Cruise Control (CACC) platoon, who are approaching a work zone. Therefore, the packet counts and/or signal strength threshold criterion must be determined by the developer of the V2I safety application. Thus, we selected an arbitrary criterion to develop an empirical method of ascertaining the null points from a DSRC RSU. The research motivation focuses on developing an empirical method of calculating the null points of a DSRC RSU for V2I communication at a highway on/off-ramp. The intent is to improve safety, mobility, and environmental applications since a map of the null points can be plotted against the distance between the DSRC RSU and a vehicle's onboard unit (OBU). The main research question asks: 'What is a more robust empirical method, compared to the horizontal and vertical laws of reflection formula, in determining the null points from a DSRC RSU on a highway on/off ramp?' The research objectives are as follows: 1. Explain where and why null points occur from a DSRC RSU (Chapter 2) 2. Apply the existing horizontal and vertical polarization model and discuss the limitations of the model in a real-world scenario for a DSRC RSU on a highway on/off ramp (Chapter 3 and Appendix A) 3. Introduce an extended horizontal and vertical polarization null point model using empirical data (Chapter 4) 4. Discuss the conclusion, limitations of work, and future research (Chapter 5). The simplest manner to understand where and why null points occur is depicted as two sinusoidal waves: direct and reflective waves (i.e., also known as a two-ray model). The null points for a DSRC RSU occurs because the direct and reflective waves produce a destructive interference (i.e., decrease in signal strength) when they collide. Moreover, the null points can be located using Pythagorean theorem for the direct and reflective waves. Two existing models were leveraged to analyze null points: 1) signal strength loss (i.e., a free space path loss model, or FSPL, in Appendix A) and 2) the existing horizontal and vertical polarization null points from a DSRC RSU. Using empirical data from two different field tests, the existing horizontal and vertical polarization null point model was shown to contain limitations in short distances from the DSRC RSU. Moreover, the existing horizontal and vertical polarization model for null points was extremely challenging to replicate with over 15 DSRC RSU data sets. After calculating the null point for several DSRC RSU heights, the paper noticed a limitation of the existing horizontal and vertical polarization null point model with over 15 DSRC RSU data sets (i.e., the model does not account for null points along the full length of the FSPL model). An extended horizontal and vertical polarization model is proposed that calculates the null point from a DSRC RSU. There are 18 model comparisons of the packet counts and signal strengths at various thresholds as perspective extended horizontal and vertical polarization models. This paper compares the predictive ability of 18 models and measures the fit. Finally, a predication graph is depicted with the neural network's probability profile for packet counts =1 when greater than or equal to 377. Likewise, a python script is provided of the extended horizontal and vertical polarization model in Appendix C. Consequently, the neural network model was applied to 10 different DSRC RSU data sets at 10 unique locations around a circular test track with packet counts ranging from 0 to 11. Neural network models were generated for 10 DSRC RSUs using three thresholds with an objective to compare the predictive ability of each model and measure the fit. Based on 30 models at 10 unique locations, the highest misclassification was 0.1248, while the lowest misclassification was 0.000. There were six RSUs mounted at 3.048 (or 10 feet) from the ground with a misclassification rate that ranged from 0.1248 to 0.0553. Out of 18 models, seven had a misclassification rate greater than 0.110, while the remaining misclassification rates were less than 0.0993. There were four RSUs mounted at 6.096 meters (or 20 feet) from the ground with a misclassification rate that ranged from 0.919 to 0.000. Out of 12 models, four had a misclassification rate greater than 0.0590, while the remaining misclassification rates were less than 0.0412. Finally, there are two major limitations in the research: 1) the most effective key parameter is packet counts, which often require expensive data acquisition equipment to obtain the information and 2) the categorical type (i.e., decision tree, logistic regression, and neural network) will vary based on the packet counts or signal strength threshold that is dictated by the threshold criterion. There are at least two future research areas that correspond to this body of work: 1) there is a need to leverage the extended horizontal and vertical polarization null point model on multiple DSRC RSUs along a highway on/off ramp, and 2) there is a need to apply and validate different electric and magnetic (or propagation) models. / Ph. D. / The deployment of dedicated short-range communications (DSRC) roadside units (RSUs) allows a connected or automated vehicle to acquire information from the surrounding environment using vehicle-to-infrastructure (V2I) communication. However, wireless communication using DSRC has shown to exhibit null points, at repeatable distances. The null points are significant and there was unexpected loss in the wireless signal strength along the pathway of the V2I communication. If the wireless connection is poor or non-existent, the V2I safety application will not obtain sufficient data to perform the operation services. In other words, a poor wireless connection between a vehicle and infrastructure (e.g., RSU) could hamper the performance of a safety application. For example, a designer of a V2I safety application may require a minimum rate of data (or packet count) over 1,000 meters to effectively implement a Reduced Speed/Work Zone Warning (RSZW) application. The RSZW safety application is aimed to alert or warn drivers, in a Cooperative Adaptive Cruise Control (CACC) platoon, who are approaching a work zone. Therefore, the packet counts and/or signal strength threshold criterion must be determined by the developer of the V2I safety application. Thus, we selected an arbitrary criterion to develop an empirical method of ascertaining the null points from a DSRC RSU. The research motivation focuses on developing an empirical method of calculating the null points of a DSRC RSU for V2I communication at a highway on/off-ramp. The intent is to improve safety, mobility, and environmental applications since a map of the null points can be plotted against the distance between the DSRC RSU and a vehicle’s onboard unit (OBU). The main research question asks: “What is a more robust empirical method, compared to the horizontal and vertical laws of reflection formula, in determining the null points from a DSRC RSU on a highway on/off ramp?” The research objectives are as follows: 1. Explain where and why null points occur from a DSRC RSU (Chapter 2) 2. Apply the existing horizontal and vertical polarization model and discuss the limitations of the model in a real-world scenario for a DSRC RSU on a highway on/off ramp (Chapter 3 and Appendix A) 3. Introduce an extended horizontal and vertical polarization null point model using empirical data (Chapter 4) 4. Discuss the conclusion, limitations of work, and future research (Chapter 5). The simplest manner to understand where and why null points occur is depicted as two sinusoidal waves: direct and reflective waves (i.e., also known as a two-ray model). The null points for a DSRC RSU occurs because the direct and reflective waves produce a destructive interference (i.e., decrease in signal strength) when they collide. Moreover, the null points can be located using Pythagorean theorem for the direct and reflective waves. Two existing models were leveraged to analyze null points: 1) signal strength loss (i.e., a free space path loss model, or FSPL, in Appendix A) and 2) the existing horizontal and vertical polarization null points from a DSRC RSU. Using empirical data from two different field tests, the existing horizontal and vertical polarization null point model was shown to contain limitations in short distances from the DSRC RSU. Moreover, the existing horizontal and vertical polarization model for null points was extremely challenging to replicate with over 15 DSRC RSU data sets. After calculating the null point for several DSRC RSU heights, the paper noticed a limitation of the existing horizontal and vertical polarization null point model with over 15 DSRC RSU data sets (i.e., the model does not account for null points along the full length of the FSPL model). An extended horizontal and vertical polarization model is proposed that calculates the null point from a DSRC RSU. There are 18 model comparisons of the packet counts and signal strengths at various thresholds as perspective extended horizontal and vertical polarization models. This paper compares the predictive ability of 18 models and measures the fit. Finally, a predication graph is depicted with the neural network’s probability profile for packet counts =1 when greater than or equal to 377. Likewise, a python script is provided of the extended horizontal and vertical polarization model in Appendix C. Consequently, the neural network model was applied to 10 different DSRC RSU data sets at 10 unique locations around a circular test track with packet counts ranging from 0 to 11. Neural network models were generated for 10 DSRC RSUs using three thresholds with an objective to compare the predictive ability of each model and measure the fit. Based on 30 models at 10 unique locations, the highest misclassification was 0.1248, while the lowest misclassification was 0.000. There were six RSUs mounted at 3.048 (or 10 feet) from the ground with a misclassification rate that ranged from 0.1248 to 0.0553. Out of 18 models, seven had a misclassification rate greater than 0.110, while the remaining misclassification rates were less than 0.0993. There were four RSUs mounted at 6.096 meters (or 20 feet) from the ground with a misclassification rate that ranged from 0.919 to 0.000. Out of 12 models, four had a misclassification rate greater than 0.0590, while the remaining misclassification rates were less than 0.0412. Finally, there are two major limitations in the research: 1) the most effective key parameter is packet counts, which often require expensive data acquisition equipment to obtain the information and 2) the categorical type (i.e., decision tree, logistic regression, and neural network) will vary based on the packet counts or signal strength threshold that is dictated by the threshold criterion. There are at least two future research areas that correspond to this body of work: 1) there is a need to leverage the extended horizontal and vertical polarization null point model on multiple DSRC RSUs along a highway on/off ramp, and 2) there is a need to apply and validate different electric and magnetic (or propagation) models.
34

Modelo de gestão dos resíduos sólidos urbanos como elemento de desenvolvimento regional sustentável: uma análise dos municípios do Oeste do Paraná / Urban solid waste management model as a sustainable regional development element: an analysis of the municipalities of the West of Paraná.

Bianco, Tatiani Sobrinho Del 27 November 2018 (has links)
Submitted by Marilene Donadel (marilene.donadel@unioeste.br) on 2019-03-25T16:13:20Z No. of bitstreams: 1 Tatiani_Bianco_2018.pdf: 5463183 bytes, checksum: 623edce81df00dd24349d6ce63dfc11f (MD5) / Made available in DSpace on 2019-03-25T16:13:20Z (GMT). No. of bitstreams: 1 Tatiani_Bianco_2018.pdf: 5463183 bytes, checksum: 623edce81df00dd24349d6ce63dfc11f (MD5) Previous issue date: 2018-11-27 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The problem of urban solid waste management (RSU) is a topic of worldwide concern, and has been treated as a priority, since equating excessive generation and final disposal of environmentally sound waste is one of the major challenges facing modern society. Thus, the RSUs are correctly managed as a challenge / goal to be achieved, in order to minimize the negative impacts caused by the generation of waste from various generating sources. In view of the above, this thesis aimed to propose a model of MSW management differentiated, in the stages of collection, transportation, treatment and recovery of waste, capable of meeting the legal prerogatives in economic, social and environmental context, and that allows the implantation of an economic model that generates wealth, employment and income in a sustainable environment in the municipalities of the Western Mesoregion of Paraná. For that, the methodological procedures included the execution of six stages, namely: 1) Characterization of the sources of RSU in the western mesoregion of Paraná; 2) Estimation of the potential of RSU generation in the municipalities of the Western Mesoregion of Paraná, during the years 1980 to 2030; 3) Evaluation of the execution of the National Solid Waste Policy as of the enactment of Federal Law No. 12,3052010; 4) Prospecting of methods, processes and technologies for the collection, transport, treatment and use of MSW; 5) Presentation of the MSW management model that allows the consolidation of an economic and sustainable system based on the MSW industrialization based on the economic, social and environmental specificities of the municipalities of the West of Paraná; 6) Consolidation and systematization of results. The results showed that only 12% of the municipalities of the Western Mesoregion of Paraná presented, through the construction of the Indicator of Sustainable Regional Development, a dynamic relationship in their productive base with economic, social and environmental advances. However, given the potential increase in the generation capacity of the MSW in the region, which was estimated at around 41%, it was identified that the 50 municipalities had a daily solid waste generation potential of 595.6 ton/day, in 1980, to 841.5 ton/day, in 2030. Thus, it was evidenced that there is inability to comply with Federal Law No. 12.305/2010, where 63% of the municipalities of the West of Paraná do not have the capacity economic, financial and technical / intellectual staff capable of handling the costs of managing and maintaining the correct level of waste management. This result is mainly due to the application of PNRS guidelines and targets in the municipalities of the West of Paraná through individualized solutions (landfills and / or controlled landfills), which become sources of economic and financial problems for the municipal administrations, as well as in the unfeasible possibility of meeting all the determinations in effect in PNRS / 2010. This scenario also occurs when one intends to establish only one intermunicipal waste management consortium capable of serving the 50 municipalities in the region, since a total investment of R $ 936.28 million would be necessary considering the amount of waste generated in the region, by 2030. Thus, the feasible, economical, social and environmentally adequate solution to waste management in the municipalities of the West of Paraná is the use of three Integrated Systems of Solid Urban Waste Management (SIGRSU), which should be implanted in the Microregions of Cascavel, Foz do Iguaçu and Toledo. Thus, the implementation of this new MSW management model, based on differentiated methods and technologies, has demonstrated the technical and economic viability of the proposal, in which urban solid waste becomes a cost factor and becomes an investment opportunity. In this scenario, the economic variable is one of the main attractions for individuals, while the impacts on the environment and society are also positive. Therefore, there is an environmental externality transformed into a source of opportunities for new business models, in which waste is considered as raw material and / or input of industrial processes, which will help in the sustainable and innovative development of the Meso-region under study, since it would be capable of generating income, from the implementation and development of new technologies, increase the useful life and reduce the need to increase the area for landfills and, thus, make the municipalities comply with the guidelines of Federal Law N ° 12.305/2010, of the PNRS. / O problema do gerenciamento de Resíduos Sólidos Urbanos (RSU) é tema de interesse mundial, e tem sido tratado como prioritário, uma vez que, equacionar a geração excessiva e disposição final e ambientalmente segura dos resíduos é um dos maiores desafios com que se defronta a sociedade moderna. Assim, denota-se a gestão correta dos RSUs como desafio/meta a ser alcançado, visando minimizar os impactos negativos causados pela geração dos resíduos de diversas fontes geradoras. Diante do exposto, a presente tese objetivou propor um modelo de gestão de RSU diferenciado, nas etapas de coleta, transporte, tratamento e aproveitamento de resíduos, capaz de atender as prerrogativas legais em âmbito econômico, social e ambiental, e, que possibilite a implantação de um modelo econômico gerador de riqueza, emprego e renda num ambiente sustentável nos municípios da Mesorregião Oeste do Paraná. Para tanto, os procedimentos metodológicos contemplaram a execução de seis etapas, sendo estas: 1) Caracterização das fontes geradoras de RSU na mesorregião Oeste do Paraná; 2) Estimação do potencial de geração dos RSU nos municípios da Mesorregião Oeste do Paraná, durante os anos de 1980 a 2030; 3) Avaliação da execuçãoimplantação da Política Nacional dos Resíduos Sólidos a partir da promulgação da Lei Federal N°12.3052010; 4) Prospecção dos métodos, processos e tecnologias para a coleta, transporte, tratamento e aproveitamento de RSU; 5) Apresentação do modelo de gestão de RSU diferenciado, que possibilite a consolidação de um sistema econômico e sustentável com base da industrialização dos RSU a partir das especificidades econômicas, sociais e ambientais dos municípios da Mesorregião Oeste do Paraná; 6) Consolidação e sistematização dos resultados. Os resultados demonstraram que apenas 12% dos municípios da Mesorregião Oeste do Paraná apresentaram, por meio da construção do Indicador de Desenvolvimento Regional Sustentável, dinâmica relação na sua base produtiva com avanços econômicos, sociais e ambientais. Contudo, dado o aumento potencial da capacidade de geração de RSU na região, que foi estimado na ordem de 41%, identificou-se que, os 50 municipios apresentaram um potencial de geração de RSU de um montante diário de 595,6 ton.dia, em 1980, para 841,5 ton.dia, em 2030. Assim, evidenciou-se que, há incapacidade no atendimento da Lei Federal N°12.305/2010, onde 63% dos municípios do Oeste do Paraná, não apresentam capacidade econômica, financeira e de corpo técnico/intelectual capaz de arcar com os custos de gestão e manutenção do correto nível de gerenciamento dos resíduos gerados. Tal resultado, deve-se, em maior parte dada a aplicação das diretrizes e metas da PNRS nos municípios do Oeste do Paraná por meio de soluções individualizadas (aterros sanitários e/ou controlados), as quais se transformam em fontes de problemas econômico-financeiros para as gestões municipais, bem como na inviável possibilidade de atendimento de todas as determinações vigentes na PNRS/2010. Tal cenário também se verifica quando se tem a intenção de implantar apenas um consórcio intermunicipal de gerenciamento de resíduos, capaz de atender aos 50 municípios da região, pois seria necessário um investimento total de R$936,28 milhões de reais, considerando o montante de resíduos gerados na região, até 2030. Assim, a solução viável, econômico, social e ambientalmente adequada a gestão de resíduos nos municípios do Oeste do Paraná é a utilização de três Sistemas de Gerenciamento Integrado de Resíduos Sólidos Urbanos (SIGRSU), os quais devem ser implantados nas Microrregiões de Cascavel, Foz do Iguaçu e Toledo. Assim, a implementação desse novo modelo de gestão dos RSU, baseado em métodos e tecnologias diferenciadas, demonstraram a viabilidade técnica e econômica da proposta, na qual os resíduos sólidos urbanos passam de um fator de custo e se tornam uma oportunidade de investimento. Nesse cenário, a variável econômica é um dos maiores atrativos para os indivíduos, ao mesmo tempo em que os impactos no meio ambiente e na sociedade são também positivos. Portanto, tem-se uma externalidade ambiental transformada em fonte de oportunidades de novos modelos de negócios, no qual os resíduos são considerados matérias-primas e/ou insumos de processos industriais, qual auxiliará no desenvolvimento sustentável e inovador da Mesorregião em estudo, pois seria capaz de gerar renda, a partir da implementação e desenvolvimento de novas tecnologias, aumento da vida útil e redução da necessidade de aumento de área para aterros sanitários e, assim, fazer com que os municípios ficassem em conformidade com as diretrizes da Lei Federal N° 12.305/2010, do PNRS.
35

[en] EXPERIMENTAL STUDY OF SANDY SOIL STABILIZED WITH MUNICIPAL SOLID WASTE ASHES AND LIME / [pt] ESTUDO EXPERIMENTAL DE UM SOLO ARENOSO ESTABILIZADO COM CINZAS DE RESÍDUO SÓLIDO URBANO E CAL

LUCIANNA SZELIGA 08 April 2015 (has links)
[pt] Este estudo apresenta o comportamento de um solo arenoso estabilizado com cinzas obtidas através da incineração de Resíduo Sólido Urbano (RSU) e cal. Através de um estudo experimental, objetiva-se avaliar a aplicabilidade de misturas solo-cinza e solo-cinza volante-cal em obras geotécnicas como, por exemplo, camadas de aterros sanitários, aterros sobre solos moles e estabilização de taludes. Para isso, foram realizados ensaios de caracterização física, química e mecânica (ensaios triaxiais CID) para os materiais envolvidos. Para as misturas solo-cinza volante-cal, adicionou-se 3 porcento de cal em substituição ao peso seco das cinzas. Foram avaliadas as influências do teor de cinza (30 e 40 porcento) e tipo de cinza (volante - CV e fundo - CF), bem como o tempo de cura (0, 60 e 90 dias) para misturas com cinza volante e cal. Os resultados mostram que tanto as misturas com CV, como CF, apresentam resultados satisfatórios. Para ambas as cinzas, as porcentagens de 30 e 40 porcento apresentaram resultados similares, podendo-se adotar o valor de 40 porcento como teor ótimo, uma vez que proporciona a utilização de uma maior quantidade de resíduo. Comparando-se as cinzas, a CF apresentou resultados mais satisfatórios que a CV. Para as misturas com cura, observou-se que no tempo de 60 dias o material sofreu um maior ganho de resistência. Foram utilizados dois métodos de moldagem de corpo de prova para o ensaio com cura, obtendo-se melhor resultado para o método onde a cura era realizada em um corpo de prova pré-moldado. Portanto o uso das cinzas de RSU em mistura com este tipo de solo se mostra satisfatório, uma vez que apresentou um bom comportamento, contribui com o menor consumo de material natural e proporciona uma destinação ambientalmente correta deste resíduo. / [en] This study presents the behavior of a sandy soil stabilized with municipal solid waste ash, and lime. In order to evaluate the applicability of mixtures soil-ash and soil-fly ash-lime for using in geotechnical projects as layers of landfills, embankment on soft soils and slope stability, an experimental campaign is presented. Thus, physical, chemical and mechanical (isotropically consolidated-drained triaxial test) characterization tests were performed for each material and mixtures. It was used 3 percent of lime in the mixtures soil- fly ash-lime, being added in replacement to the dry weight of fly ash. Were evaluated the influence of ash content (30 and 40 percent), type of ash (fly ash and bottom ash) and curing time (0, 60 and 90 days) for mixtures containing fly ash and lime. The results have shown that mixtures with both kinds of ashes present a satisfactory behavior, increasing or maintaining the shear strength parameters similar to the pure material. For both kinds of ashes the variation of the content has not provided significant changes in the strength parameters, therefore, 40 percent can be considered as best content, once it provides a bigger destination of the residue. Comparing fly and bottom ash, the last has presented better results than fly ash. For mixtures with lime and cure, it has been observed better results for 60 days of cure, with greater gain of strength. Two molding methods have been used for preparing the mixture specimen, being obtained a better result with pre modeled specimen. Therefore, the use of municipal solid waste ash for stabilizing this kind of soil for using in the cited works, could minimize the current problems of waste disposal, contribute with the reduction of consumption of natural resources and give a noble use for this material.
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Life Cycle Assessment of current and prospective waste management systems in Brazil / Avaliação do Ciclo de Vida de sistemas de gerenciamento de Resíduos Sólidos atuais e futuros no Brasil

Lima, Priscila de Morais 15 April 2019 (has links)
The increase of Municipal Solid Waste (MSW) generation along with the current inadequate waste management and the issue of the Solid Waste National Policy (PNRS) in 2010, have brought a bigger concern in regards to the matter to Brazilian municipalities. Besides all the demands of the Policy, improper waste disposal sites still represent 40% of the destination of the waste collected in Brazil. In addition, only about 3.6% of recyclables are currently recovered. Campo Grande is the state capital of Mato Grosso do Sul and has a sanitary landfill with two more years of lifespan. The city has recently published its new tool to aid waste management – the Selective Collection Plan (PCS), which is comprised of planning and goals for the next 20 years. Facing this situation, the aim of this research was to analyze and compare different waste management systems for Brazil (Chapter 2) and Campo Grande (Chapter 3). A consequential Life Cycle Assessment (LCA) was employed, with the software EASETECH for modelling. The general results showed that the improper disposal sites (i.e. dumps) have the highest environmental impacts due to the untreated landfill gas and leachate. The combination of high recycling rates and low amounts of waste disposed in landfills presented overall good performance in both cases. From all the scenarios assessed, the best performance was achieved by anaerobic digestion of the biowaste, with biogas utilization as fuel substitute, combined with a material recovery facility and a mixed waste mechanical biological treatment, with residue derived fuel directed to cement kilns avoiding coke combustion. In conclusion, the environmental awareness must be raised towards the population and the decision-makers are entitled to the changes that need to happen in order to decrease the environmental impacts of the systems and comply with the Brazilian waste legislation. / O aumento da geração de Resíduos Sólidos Urbanos (RSU) juntamente com a atual gestão inadequada de resíduos e a promulgação da Política Nacional de Resíduos Sólidos (PNRS) em 2010, trouxeram uma maior preocupação em relação ao assunto nos municípios brasileiros. Apesar de todas as exigências da Política, os locais de disposição inadequados ainda representam 40% do destino dos resíduos coletados no Brasil. Além disso, apenas cerca de 3,6% dos recicláveis são atualmente recuperados. Campo Grande é a capital do estado de Mato Grosso do Sul e possui aterro sanitário com apenas dois anos de vida útil. O município publicou recentemente sua nova ferramenta para auxiliar a gestão de resíduos sólidos – o Plano de Coleta Seletiva (PCS), que é composto por planejamento e metas para os próximos 20 anos. Diante desta situação, o objetivo desta pesquisa foi analisar e comparar diferentes sistemas de manejo de resíduos para o Brasil (Capítulo 2) e Campo Grande (Capítulo 3). Foi utilizada a Avaliação do Ciclo de Vida (ACV) consequencial, com o software EASETECH para modelagem. Os resultados gerais mostraram que os locais de disposição inadequados (ou seja, lixões) possuem os maiores impactos ambientais devido à falta de tratamento do gás de aterro e do lixiviado. A combinação de altas taxas de reciclagem e baixa quantidade de resíduos dispostos em aterros apresentou bom desempenho global em ambos os casos. De todos os cenários avaliados, o melhor desempenho alcançado foi através da digestão anaeróbia dos resíduos orgânicos, com a utilização de biogás como substituto de combustível, combinada com uma unidade de triagem e um tratamento mecânico biológico de resíduos misturados, e combustível derivado de resíduos destinado a fornos de cimenteiras evitando a combustão de coque. Em conclusão, a conscientização ambiental deve ser direcionada à população e a responsabilidade conferida aos tomadores de decisão para as mudanças que precisam ocorrer visando a redução dos impactos ambientais dos sistemas e o cumprimento da PNRS.
37

Por dentro da caixa-preta das políticas públicas municipais de resíduos sólidos urbanos: os arranjos institucionais e a implementação da Política Nacional de Resíduos Sólidos / Inside the black box of municipal solid waste policies: the institutional arrangements and implementation of the Nacional Policy Solid Waste

Klein, Flávio Bordino 06 October 2017 (has links)
A aprovação da Lei Federal nº 12.305, de 02 de agosto de 2010 Política Nacional de Resíduos Sólidos (PNRS) tem como uma das diretrizes fundamentais a gestão integrada, que inclui a ordem de prioridade ou hierárquica na gestão dos resíduos sólidos e a inclusão dos catadores de materiais recicláveis. Considerando que a consolidação dessas diretrizes demanda colocar a PNRS na agenda governamental e, ainda, da capacidade estatal para a implementação de políticas públicas, o objetivo deste trabalho foi analisar a inter-relação dos arranjos institucionais municipais das políticas de resíduos sólidos urbanos (RSU) e a implementação da PNRS. A estratégia metodológica adotada incluiu a pesquisa bibliográfica e documental sobre o contexto histórico nacional e local das políticas de resíduos sólidos e saneamento básico. Também foram analisadas as transferências voluntárias de recursos fiscais do governo federal para ações sobre resíduos sólidos, por meio da consulta de fontes como Portal da Transparência e dos Planos Plurianuais da União. Para a análise da implementação da PNRS no nível local, utilizou-se estudo de casos múltiplos em Salesópolis, Mogi das Cruzes e São Paulo. A coleta de dados secundários incluiu os Planos de Gestão Integrada de Resíduos Sólidos (PGIRS), leis, documentos e dados oficiais. Para a obtenção de dados primários, foram utilizados questionário, realização de entrevistas e registros fotográficos, posteriormente analisados por meio de indicadores sobre os resultados e desempenho das políticas públicas de limpeza urbana e gestão de resíduos sólidos, à luz das diretrizes da PNRS. Os principais limites à capacidade estatal na implementação da PNRS revelaram-se em Salesópolis pela restrição orçamentária e baixa densidade populacional, enquanto que em Mogi das Cruzes e São Paulo esses limites estão diretamente associados com a transferência do manejo de RSU para o setor privado. Ao mesmo tempo, esses arranjos municipais apontam, em maior ou menor escala, para a consolidação do aterro sanitário como destinação prioritária dos RSU, uma tendência nacional. Entretanto, justamente a dependência tecnológica da solução pelos aterros sanitários tem se mostrado como a principal barreira no cumprimento da ordem hierárquica da gestão de resíduos sólidos postulada pela PNRS / The enactment of Federal Law No. 12,305, August 2, 2010 Nacional Solid Waste Policy (NSWP) has the fundamental principle of integrated management, which includes the order of priority or hierarchy for solid waste management and inclusion of collectors of recyclable materials in partnership with the government. Considering that the consolidation of these guidelines demands to regard NSWP in the governmental agenda and of the state capacity for the implementation of public policies, the objective of this work was to analyze the interrelationship of the municipal institutional arrangements of municipal solid waste (MSW) policies and the implementation of NSWP. The methodological strategy adopted included bibliographical and documentary research on the national and local historical context of solid waste and basic sanitation policies. Voluntary transfers of fiscal resources from the federal government to actions on solid waste were also analyzed, through the consultation of sources such as the Transparency Portal and the Pluriannual Plans of the Union. For the analysis of the implementation of the NSWP at the local level, a multiple case study was used in Salesópolis, Mogi das Cruzes and São Paulo. Secondary data collection included the Integrated Solid Waste Management Plan (ISWMP), laws, documents and oficial data. To obtain primary data, questionnaire, interviews and photographic records were used, later analyzed through indicators on the results and performance of the public policies of urban cleaning and solid waste management in light of NSWP guidelines. The main limits on state capacity in implementation of the NSWP were revealed in Salesópolis by budget constraint and low population density, while in Mogi das Cruzes and São Paulo these limits are directly associated with the transfer of MSW management to the private sector. At the same time, these municipal arrangements point, to a greater or lesser degree, to the consolidation of the landfill as a priority destination for MSW, a national trend. However, the technological dependence of the solution by the landfills has proved to be the main barrier in the hierarchical order of solid waste management postulated by the PNRS
38

Por dentro da caixa-preta das políticas públicas municipais de resíduos sólidos urbanos: os arranjos institucionais e a implementação da Política Nacional de Resíduos Sólidos / Inside the black box of municipal solid waste policies: the institutional arrangements and implementation of the Nacional Policy Solid Waste

Flávio Bordino Klein 06 October 2017 (has links)
A aprovação da Lei Federal nº 12.305, de 02 de agosto de 2010 Política Nacional de Resíduos Sólidos (PNRS) tem como uma das diretrizes fundamentais a gestão integrada, que inclui a ordem de prioridade ou hierárquica na gestão dos resíduos sólidos e a inclusão dos catadores de materiais recicláveis. Considerando que a consolidação dessas diretrizes demanda colocar a PNRS na agenda governamental e, ainda, da capacidade estatal para a implementação de políticas públicas, o objetivo deste trabalho foi analisar a inter-relação dos arranjos institucionais municipais das políticas de resíduos sólidos urbanos (RSU) e a implementação da PNRS. A estratégia metodológica adotada incluiu a pesquisa bibliográfica e documental sobre o contexto histórico nacional e local das políticas de resíduos sólidos e saneamento básico. Também foram analisadas as transferências voluntárias de recursos fiscais do governo federal para ações sobre resíduos sólidos, por meio da consulta de fontes como Portal da Transparência e dos Planos Plurianuais da União. Para a análise da implementação da PNRS no nível local, utilizou-se estudo de casos múltiplos em Salesópolis, Mogi das Cruzes e São Paulo. A coleta de dados secundários incluiu os Planos de Gestão Integrada de Resíduos Sólidos (PGIRS), leis, documentos e dados oficiais. Para a obtenção de dados primários, foram utilizados questionário, realização de entrevistas e registros fotográficos, posteriormente analisados por meio de indicadores sobre os resultados e desempenho das políticas públicas de limpeza urbana e gestão de resíduos sólidos, à luz das diretrizes da PNRS. Os principais limites à capacidade estatal na implementação da PNRS revelaram-se em Salesópolis pela restrição orçamentária e baixa densidade populacional, enquanto que em Mogi das Cruzes e São Paulo esses limites estão diretamente associados com a transferência do manejo de RSU para o setor privado. Ao mesmo tempo, esses arranjos municipais apontam, em maior ou menor escala, para a consolidação do aterro sanitário como destinação prioritária dos RSU, uma tendência nacional. Entretanto, justamente a dependência tecnológica da solução pelos aterros sanitários tem se mostrado como a principal barreira no cumprimento da ordem hierárquica da gestão de resíduos sólidos postulada pela PNRS / The enactment of Federal Law No. 12,305, August 2, 2010 Nacional Solid Waste Policy (NSWP) has the fundamental principle of integrated management, which includes the order of priority or hierarchy for solid waste management and inclusion of collectors of recyclable materials in partnership with the government. Considering that the consolidation of these guidelines demands to regard NSWP in the governmental agenda and of the state capacity for the implementation of public policies, the objective of this work was to analyze the interrelationship of the municipal institutional arrangements of municipal solid waste (MSW) policies and the implementation of NSWP. The methodological strategy adopted included bibliographical and documentary research on the national and local historical context of solid waste and basic sanitation policies. Voluntary transfers of fiscal resources from the federal government to actions on solid waste were also analyzed, through the consultation of sources such as the Transparency Portal and the Pluriannual Plans of the Union. For the analysis of the implementation of the NSWP at the local level, a multiple case study was used in Salesópolis, Mogi das Cruzes and São Paulo. Secondary data collection included the Integrated Solid Waste Management Plan (ISWMP), laws, documents and oficial data. To obtain primary data, questionnaire, interviews and photographic records were used, later analyzed through indicators on the results and performance of the public policies of urban cleaning and solid waste management in light of NSWP guidelines. The main limits on state capacity in implementation of the NSWP were revealed in Salesópolis by budget constraint and low population density, while in Mogi das Cruzes and São Paulo these limits are directly associated with the transfer of MSW management to the private sector. At the same time, these municipal arrangements point, to a greater or lesser degree, to the consolidation of the landfill as a priority destination for MSW, a national trend. However, the technological dependence of the solution by the landfills has proved to be the main barrier in the hierarchical order of solid waste management postulated by the PNRS
39

Aproveitamento de resÃduos de caranguejo uÃÃ gerados pelas barracas da praia do futuro como fonte alternativa de adubo orgÃnico em cultura de feijÃo caupi. / Exploitation of crab residues uÃÃ generated by the tents of the beach of the future as alternative organic seasoning source in beans culture caupi.

Francisco Josà Freire de AraÃjo 26 June 2007 (has links)
nÃo hà / O atual gerenciamento dos ResÃduos SÃlidos Urbanos (RSU) na maioria das cidades brasileiras vem se mostrando pouco eficaz para o atendimento das populaÃÃes, tanto pela explosÃo demogrÃfica ocorrida nas Ãltimas dÃcadas como pelo seu estilo de vida consumista. A produÃÃo massiva de resÃduos sÃlidos, lÃquidos e gasosos tambÃm està ligada diretamente à tecnologia empregada no beneficiamento dos produtos extraÃdos da natureza, os quais, na maioria das vezes, sÃo difÃceis de serem reabsorvidos pelos ecossistemas. Dessa maneira, a limpeza urbana assume um importante papel dentre as necessidades da sociedade brasileira, adquirindo importÃncia sanitÃria, econÃmico-financeira, social e estÃtica. Estudos realizados quanto ao aproveitamento e reciclagem dos lixos revelaram suas potencialidades e uma excelente alternativa como destino final de muitos resÃduos urbanos. O presente estudo ressalta a problemÃtica dos RSU, tendo como objetivo propor uma alternativa para reduÃÃo de resÃduos orgÃnicos de caranguejo uÃa gerados pelas barracas de praia, localizadas na Praia do Futuro, na cidade de Fortaleza, bem como sugerir, aos demais estabelecimentos comerciais que produzem o mesmo tipo de resÃduo, transformÃ-los em fertilizantes orgÃnicos. A pesquisa tambÃm procurou verificar a viabilidade do produto gerado dos resÃduos de caranguejo como uma fonte nutricional alternativa para uma cultura de feijÃo caupi. A escolha dessa cultura se deve primeiramente pela sua relevÃncia para populaÃÃo e por oferecer uma rÃpida resposta, sendo uma cultura de ciclo curto. AlÃm de estudar a composiÃÃo do lixo gerado por esses estabelecimentos, a pesquisa tambÃm buscou analisar sua composiÃÃo quÃmica, seu rendimento e buscar dados de produtividade como altura da planta, nÃmero de vagens, tamanho das vagens, peso das vagens, nÃmero de sementes por vagens e peso de cem sementes. Para este estudo foram testados vinte e dois tratamentos com quatro repetiÃÃes, os quais variavam quanto Ãs proporÃÃes de adubo de caranguejo e fertilizante quÃmico de ambos para que fossem verificadas suas respostas. O percentual de matÃria orgÃnica reciclÃvel desse lixo estudado à de aproximadamente 87,34%, entretanto, os resÃduos de caranguejo contribuem com 52% desses rejeitos. O rendimento desse material à de aproximadamente 24%. Alguns parÃmetros analisados como nitrogÃnio, fÃsforo, cÃlcio e magnÃsio ganharam destaque devido seus valores percentuais, encontrados nesse produto orgÃnico, variarem de duas a quatro vezes mais quando os mesmos sÃo observados numa amostra de esterco bovino. Os dados relativos à produtividade revelaram que os tratamentos que proporcionaram os melhores resultados tinham em comum a presenÃa da farinha de caranguejo, mostrando que a adiÃÃo desse composto orgÃnico melhora as respostas quanto aos parÃmetros de produtividade, implicando na reduÃÃo da quantidade de fertilizantes quÃmicos no solo, no aumento da economia para o produtor e um destino adequado para os resÃduos sÃlidos orgÃnicos gerados. / The current management of the Urban Solids Residuals (URS) in most Brazilian cities have been considered to be slightly inefficient for the demand of the population, due to the rapid growth of the population in the last few decades and also because of their consuming lifestyle. The massive production of solid, liquids and gas residuals is also directly linked with the technology employed to benefit products extracted from nature, which most cases are difficult to be reabsorbed by the ecosystems. In this way, the urban cleanliness assumes an important role among the needs of the Brazilian society; gaining sanitary, economic, social and aesthetic importance. Studies conducted regarding the positive outcomes and the recycling of rubbish have shown its potentialities and an excellent alternative to the final disposal of many urban residuals. The current study highlights the problems and concerns with the URS, and suggests an alternative for the reduction of crabâs organic residuals generated by the restaurants at Futuroâs Beach in Fortaleza. In addition, the present study also proposes to other commercial establishments that produce such residuals, opportunity to transform them in organic fertilizers. The research aims to verify the viability for a better use of crabâs residuals generated by the restaurants at Futuroâs Beach as an alternative organic compost, working as a nutritional resource for a culture of Caupi beans. The choice for this culture is primarily due to its relevance to the wide population and also for being able to offer a quick response, as it is a culture of short cycle. Further to the study of the composition of the rubbish generated by such establishments, the research also aimed to analyse its chemical composition, its income and to look for productivity items such as plantâs height, number and size of string beans, weight of string beans, number of seeds per string beans, and the weight of a hundred seeds. For the purpose of this study, twenty two treatments, with four repetitions, which varied between the proportions of crab compost and chemical fertilizers in both of them were used in order to verify the results. The percentage of recyclable organic contents of this rubbish studied is about 87, 34%. However, crabâs residuals contributed with 52%. The income of this material is around 24%. Some parameters analysed like nitrogen, phosphorus, potassium, calcium and magnesium stood out due to its percentage values, found in this organic product, vary between 3 and 4 times more than those found in a sample of bovine compost. The data related to the productivity revealed that the treatments which obtained the best results had in common the presence of crabâs flour. This shows that by adding this organic compost enhances productivity parameters, which has a direct impact in the reduction of the amounts of chemical fertilizers used in the soil, a financial saving for the farmer and an adequate means for the organic solid residuals generated.
40

Avaliação tecnológica de geração energética com resíduos sólidos urbanos (RSU) no Brasil

Menezes, Wallace Fernandes 15 May 2013 (has links)
Submitted by Wallace Fernandes Menezes (wallace.mpagro@gmail.com) on 2013-06-05T13:07:01Z No. of bitstreams: 1 130530 - Dissertação Wallace (versão final).pdf: 1774979 bytes, checksum: 9f5ffa0073dca0d65b56a3fe736abe36 (MD5) / Approved for entry into archive by Suzinei Teles Garcia Garcia (suzinei.garcia@fgv.br) on 2013-06-05T13:48:12Z (GMT) No. of bitstreams: 1 130530 - Dissertação Wallace (versão final).pdf: 1774979 bytes, checksum: 9f5ffa0073dca0d65b56a3fe736abe36 (MD5) / Made available in DSpace on 2013-06-05T14:11:25Z (GMT). No. of bitstreams: 1 130530 - Dissertação Wallace (versão final).pdf: 1774979 bytes, checksum: 9f5ffa0073dca0d65b56a3fe736abe36 (MD5) Previous issue date: 2013-05-15 / This study does an analysis of institutional, organizational, technological and competitive environments that surround energy recovery of municipal solid waste in Brazil, subject of recent policy launched in the country, that cover the issue superficially, focusing mainly on the disposal of waste to landfills, including those of organic origin. The analysis performed shows that, above an excellent process management, government policy on the issue of energy recovery from waste are critical to the viability of these ventures, which also depends on a strengthening in the organizational environment, responsible for political pressures and the centralization of interests on the subject. An analysis of the technological environment concluded that the recovery of energy from waste is dominated by companies in Brazil and can be expanded in scale and technologies available, provided that the market for municipal solid waste offers security to investors, especially over other renewable energy sources which use the same existing laws on the sale of electricity, but with lower deployment costs. Unlike other energy sources, under the current political context, the developments of energy recovery from municipal solid waste are economically viable under very specific conditions in Brazil, especially those related to lack of space or the establishment of public private partnerships in weighing the interests of both partners, as well as weighted the earnings for the municipality in the environmental, social and economic pillars. / Este estudo faz uma análise dos ambientes institucional, organizacional, tecnológico e competitivo que cercam o aproveitamento energético dos resíduos sólidos urbanos no Brasil, objeto de política recente lançada no país, que trata a questão superficialmente, priorizando, sobretudo, a destinação dos resíduos aos aterros sanitários, inclusive aqueles de origem orgânica. As análises realizadas mostram que, acima de uma gestão excelente do processo, as políticas de governo sobre o tema da recuperação energética de resíduos são fundamentais para a viabilidade destes empreendimentos, que é dependente também de um fortalecimento no ambiente organizacional, responsável pelas pressões políticas e centralização dos interesses sobre o tema. Uma análise do ambiente tecnológico concluiu que a recuperação energética de resíduos é dominada por empresas no Brasil e que pode ser ampliada em escala e tecnologias disponíveis, desde que o mercado de resíduos sólidos urbanos ofereça segurança ao investidor, sobretudo acima de outras fontes de energia renováveis que se valem das mesmas legislações existentes sobre a comercialização de energia elétrica, porém com menores custos de implantação. Diferentemente de outras fontes de energia, sob o contexto político atual, os empreendimentos de aproveitamento energético de resíduos sólidos urbanos são viáveis economicamente em condições muito específicas no Brasil, especialmente aquelas ligadas à falta de espaço ou ao estabelecimento de parcerias público privadas em que pesem os interesses de ambos os parceiros, como também ponderados os ganhos para o município nos pilares ambiental, social e econômico.

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