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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.
21

Potencial de produção de biogás e energia na indústria de abate de frangos no Brasil / Potential for biogas production and energy in poultry agroindustry in Brazil

Malaggi, Michelle 21 July 2014 (has links)
Made available in DSpace on 2017-07-10T17:59:29Z (GMT). No. of bitstreams: 1 Michelle Malaggi.pdf: 1871937 bytes, checksum: 708cbc506e559db0a8985159cef6e037 (MD5) Previous issue date: 2014-07-21 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The current paper had as an objective to calculate the amount of biogas being made by the Brazilian chicken slaughter companies and the biogas capacitance for producing energy. Some of the substantial data from this paper was gathered in partnership with a poultry agroindustry that served as standard basis. The company has a daily cull of 266 thousands chickens a day, with a treatment system based on the Canadian bio digestive model, which through anaerobic degradation produces biogas as a result. The chicken slaughter industry produces an average of 743,77 m3.day-1 of biogas meaning that, it generates 2,78 m3.day-1 per slaughtered animal. Which its electricity production is of 1,47 kWh. With this data and other ones taken from relevant readings, we were able to calculate that Brazil has a capability of producing 39.335,44 thousands m3.day-1 of biogas and generating 57.823,11 kWh of electricity. Proving to be possible the use of agro industrial residues to generate the agro energy, helping and relieving the Brazilian electric energy system, which is currently on a critical situation. / O presente trabalho teve como objetivo estimar a produção de biogás proveniente das indústrias brasileiras de abate de frangos e a capacidade de produzir energia por meio do biogás. Alguns dos dados base foram obtidos junto a uma agroindústria avícola que serviu como referência. A empresa possui um abate médio de 266 mil frangos por dia, com sistema de tratamento de efluentes baseado no biodigestor modelo canadense, o qual através da degradação anaeróbia produz o biogás como resultado final. A indústria de abate de frangos produz em média 743,77 m3.dia-1 de biogás ou seja, gera 2,78 m3.dia-1 por animal abatido. O valor médio para a conversão em eletricidade é de 1,47 kWh por m3 de biogás. Com este dado e outros obtidos em literaturas pertinentes, conseguiu-se estimar que o Brasil possui capacidade para gerar 39.335,44 mil m3.dia-1 de biogás e de produzir 57.823,11 kWh de energia elétrica. Provando ser possível utilizar resíduos de agroindústrias para gerar a agroenergia, assim auxiliando e aliviando o sistema elétrico brasileiro, o qual se encontra em crise.
22

Avaliação do impacto de ecoinovações: o caso da tecnologia de biodigestores aplicada na agroindústria processadora de mandioca do estado do Paraná / Eco-innovations impact assessment: the case of biodigester technology applied in processing of cassava industries of Paraná state

Jesus, Marco Antonio Sampaio de 26 June 2015 (has links)
Submitted by Nadir Basilio (nadirsb@uninove.br) on 2016-06-07T16:19:57Z No. of bitstreams: 1 Marco Antonio Sampaio de Jesus.pdf: 2226717 bytes, checksum: 6a4b34c676cc6dcd79f81303dac46949 (MD5) / Made available in DSpace on 2016-06-07T16:19:57Z (GMT). No. of bitstreams: 1 Marco Antonio Sampaio de Jesus.pdf: 2226717 bytes, checksum: 6a4b34c676cc6dcd79f81303dac46949 (MD5) Previous issue date: 2015-06-26 / The negative externalities caused by production activities to satisfy the consumption needs impact directly on the natural environment, for example, the emission of greenhouse gases and pollution of soil and water, requiring new approaches to decision-making processes in organizations. Among these approaches are incorporating innovations that provide reduced environmental impacts, also called eco-innovations, and the adoption of models that assess comprehensively, integrated and in different perspectives the overall performance of these innovations. Considering that the object of this research is the eco-innovation 'biodigester technology' and the research field are the processing of cassava industries in State of Paraná, this multicase study included an extensive literature review to propose a specific set of indicators to assess the overall impact caused by the eco-innovation cited, covering the classic dimensions of sustainable development (environmental, social and economic) as well as other dimensions defined for the model used (training of human resources, institutional development, introducing innovation, unexpected/unwanted occurrences and characteristics of environmental management). This set of indicators was incorporated into the INOVA-tec System Model (Jesus-Hitzschky, 2007) developed by a researcher at the Brazilian Agricultural Research (Embrapa), setting up a new model called INOVA-tec System Modified. The primary data were processed in the new model and after analysis of the results it was evident that the technology object of this research has a favorable scenario for its spread, but the performance indicators are still low. Then were then presented suggestions for improvement to optimize the overall impact of the technology and at the end, it is recommended that the model proposed in this study be applied to other activities of the agricultural industry in order to validate and improve it´s theoretical contribution. / As externalidades negativas provocadas pelas atividades produtivas para atender as necessidades de consumo impactam diretamente o meio ambiente natural, por exemplo, pela emissão de gases efeito estufa e contaminação do solo e da água, exigindo novas abordagens para os processos decisórios das organizações. Entre essas abordagens estão a incorporação de inovações que proporcionem redução dos impactos ambientais, também denominadas ecoinovações, bem como a adoção de modelos que avaliem de forma abrangente, integrada e em diferentes perspectivas a performance geral dessas inovações. Tendo como objeto de pesquisa a ecoinovação ‘tecnologia de biodigestores’ e como campo de pesquisa as fecularias do Estado do Paraná, este estudo de casos múltiplos compreendeu uma extensa revisão na literatura para propor um conjunto específico de indicadores capazes de avaliar o impacto geral provocado pela referida ecoinovação, contemplando as dimensões clássicas do desenvolvimento sustentável (ambiental, social e econômica) bem como as demais dimensões definidas para o modelo utilizado (capacitação de recursos humanos, desenvolvimento institucional, introdução da inovação, ocorrências inesperadas/indesejadas e características da gestão ambiental). Esse conjunto de indicadores foi incorporado ao modelo INOVA-tec System (Jesus-Hitzschky, 2007) desenvolvido por uma pesquisadora da Empresa Brasileira de Pesquisa Agropecuária, configurando um novo modelo aqui denominado INOVA-tec System Modificado. Os dados primários obtidos foram processados no novo modelo e após análise dos resultados ficou evidenciado que a tecnologia objeto desta pesquisa tem um cenário favorável à sua disseminação, porém a performance dos indicadores ainda é baixa. Foram, então, apresentadas sugestões de melhoria visando otimizar o impacto geral da tecnologia e, ao final, recomenda-se que o modelo proposto neste estudo seja aplicado em outras atividades da agroindústria a fim de validar e aprimorar sua contribuição teórica.
23

Desarrollo de un sistema automático de producción de biogás para la generación de energía eléctrica en el distrito de San Mateo – Chocna / Development of an automation system for the production of electric energy with biogas in the district of San Mateo – Chocna

Lázaro Tapia, César Enrique, Condori Aguilar, Juan Joel 17 August 2021 (has links)
La falta de energía eléctrica en zonas rurales y vulnerables del Perú es un problema que genera limitaciones en el desarrollo social y económico de sus habitantes. La Organización de las Naciones Unidas (ONU) en su Objetivo de Desarrollo Sostenible nro. 7 indica que los estados deben garantizar el acceso a una energía asequible, segura, sostenible y moderna. También hace hincapié en prestar mayor atención a las mejoras para el acceso a combustibles de cocina limpios y seguros. Según datos de la ONU y el Banco Mundial el acceso a electricidad en el país llega al 95% en general, sin embargo, es importante señalar que en zonas rurales esta cifra disminuye hasta un 82%. Estas zonas del país se caracterizan por tener como actividades primarias a la ganadería y la agricultura, las cuales generan una importante cantidad de residuos que pueden ser aprovechados mediante su transformación y/o utilización como fuentes de energía. En este contexto se ha demostrado que el estiércol de ganado (recurso orgánico) puede generar energía térmica como eléctrica. Por lo expuesto, el objetivo principal del proyecto es desarrollar un sistema automático de producción de biogás a partir de desechos de ganado vacuno. El biogás producido será utilizado para generar energía eléctrica mediante un generador. Este sistema debe ser de operación autónoma y fácil implementación, permitiendo que cualquier persona pueda operarlo. Además, se plantea el desarrollo de un sistema de filtrado en dos etapas para la eliminación del sulfuro de hidrógeno generado junto con el biogás, con el fin de evitar posibles daños de corrosión a los equipos, peligro para los usuarios y al ambiente. / The lack of electrical energy in rural and vulnerable areas of Peru is a problem that generates limitations in the social and economic development of its inhabitants. The United Nations (UN) in its Sustainable Development Goal nro. 7 indicates that states must guarantee access to affordable, safe, sustainable and modern energy. It also emphasizes that greater attention should be into improvements in access to clean and safe cooking fuels. According to data from the UN and the World Bank, access to electricity in the country reaches 95% overall, however, it is important to note that in rural areas this figure drops to 82%. These areas of the country are characterized by having as their primary activities livestock and agriculture, which generate a significant amount of waste that can be harnessed through their transformation and/or use as energy sources. In this context, it has been demonstrated that cattle manure (an organic resource) can generate both thermal and electrical energy. Therefore, the main objective of the project is to develop an automatic system for the production of biogas from cattle waste. The biogas produced will be used to generate electrical energy by means of a generator. This system must be of autonomous operation, easy implementation and use allowing any person to operate it. In addition, the development of a two-stage filtering system for the elimination of hydrogen sulfide generated along with the biogas is proposed, in order to avoid possible corrosion damage to the equipment, danger to users and the environment. / Tesis
24

The Potential of Anaerobic Digestion Technology to Treat Coffee Waste in Huatusco, Mexico

Bombardiere, Ysabel Estrada 26 September 2006 (has links)
No description available.
25

Integrated farming systems for food and energy in a warming, resource-depleting world

Rodriguez, Lylian 29 August 2011 (has links)
Diese Arbeit ist ein Beitrag zur Entwicklung einer Strategie für die eine CO2 sparende zu- künftige Landwirtschaft, in der nur geringe Emissionen von Treibhausgasen entstehen, die Stromerzeugung vor Ort aus natürlichen Ressourcen erfolgt, eine maximale Ausnutzung der Sonnenenergie genutzt wird, und der Konflikt zwischen der Nutzung der verfügbaren Ressourcen für Nahrungsmittel und Treibstoff Produktion vermieden wird. Alle Versuche in der Arbeit wurden in den Jahren 2005 -2009 auf der Öko-Farm (TOSOLY) der UTA (Fundación para la Producción Agropecuaria Tropical Sostenible Capitulo Kolumbien - UTA) unter der Leitung von Dr. TR Preston (Präsident ) und MSc Lylian Rodríguez (Director) durchgeführt. / This thesis is a contribution to the strategy that should underpin all future farming systems: namely the need to “de-carbonize” the system, by reducing emissions of greenhouse gases, generating electricity locally from natural resources, making maximum use of solar energy and ensuring there is no conflict between use of available resources for both food and fuel production. All the experiments described in the thesis were carried out in the period 2005 -2009 at the ecological farm (TOSOLY) of the UTA Foundation (Fundación para la Producción Agropecuaria Tropical Sostenible Capitulo Colombia – UTA) of which the principals are Dr T R Preston (President) and MSc Lylian Rodríguez (Director).

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