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PANORAMA DOS RESÍDUOS DE EQUIPAMENTOS ELÉTRICOS E ELETRÔNICOS (REEE): O LIXO ELETROELETRÔNICO E-LIXOMagalhães, Diego de Castilho Suckow 11 August 2011 (has links)
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Previous issue date: 2011-08-11 / This study has been dedicated to 􀁗􀁋􀁈􀀃 􀁕􀁈􀁖􀁈􀁄􀁕􀁆􀁋􀀃 􀁒􀁉􀀃 􀂳􀀨􀁑􀁙􀁌􀁕􀁒􀁑􀁐􀁈􀁑􀁗􀁄􀁏􀀃 􀀰􀁄􀁕􀁎􀁈􀁗􀂴􀀏􀀃 􀁉􀁒􀁕􀀃 􀁗􀁋􀁈􀀃
Master's Degree in Law, International Relations and Development, on Academic
Master's Degree of the Pontifical Catholic University of Goiás and presents an
􀂳􀀲􀁙􀁈􀁕􀁙􀁌􀁈􀁚􀀃 􀁒􀁉􀀃 􀀨􀁏􀁈􀁆􀁗􀁕􀁌􀁆􀁄􀁏􀀃 􀁄􀁑􀁇􀀃 􀀨􀁏􀁈􀁆􀁗􀁕􀁒􀁑􀁌􀁆􀁖􀀃 􀀨􀁔􀁘􀁌􀁓􀁐􀁈􀁑􀁗􀀃 􀀺􀁄ste: electronics waste 􀂱 e-
􀁚􀁄􀁖􀁗􀁈􀂴􀀑􀀃􀀷􀁒􀁊􀁈􀁗􀁋􀁈􀁕􀀃􀁚􀁌􀁗􀁋􀀃􀁗􀁋􀁈􀀃􀁄􀁖􀁖􀁘􀁐􀁓􀁗􀁌􀁒􀁑􀀃􀁒􀁉􀀃􀁆􀁒􀁑􀁆􀁈􀁕􀁑􀀃􀁉􀁒􀁕􀀃􀁈􀁑􀁙􀁌􀁕􀁒􀁑􀁐􀁈􀁑􀁗􀁄􀁏􀀃􀁌􀁖􀁖􀁘􀁈􀁖􀀏􀀃􀁗􀁋􀁈􀀃􀁉􀁒􀁆􀁘􀁖􀀃􀁒􀁉􀀃
this scientific study is to identify the reality that permeates the waste of electronics
internationally and nationally, combining the available data, identify the risks and to
point out need for environmental management and the adequate way to handle ewaste,
not only by the government but throughout society, primarily those involved in
the production of electrical and electronic products. In face of the domestic and foreign
situation will become clear that electronic products are discarded as scrap after its
useful life, sometimes inappropriately, given the governmental omission of some States
and the lack of specifications for the management and handling of e-waste. In this
sense, it has been elucidated critical and positive aspects of domestic and foreign legal
policies to the objects of analysis. It matters because the perception of how important
the care of the e-waste and how large are the implications and consequences of
improper waste management. Remain to be highlighted specific initiatives on recycling
and final destination of e-waste for prevention of environmental pollution. And
particularly with a view to environmental protection, enable to foster intelligible
discussions to provide to government, business and society robust scientific evidence
in order to effectuate the mechanisms of protection and control of disposal of electrical
and electronic equipment waste. The methodology applied to the academic endeavor
is a hypothetical-deductive effort, which is part of a rational analysis of specific and
general factors in order to show the reality about the foreign and domestic electronic
equipment waste, to emphasize the importance of adequate environment management
waste of solid of this kind. / Esta pesquisa volta-􀁖􀁈􀀃 􀁪􀀃 􀁏􀁌􀁑􀁋􀁄􀀃 􀁇􀁈􀀃 􀁓􀁈􀁖􀁔􀁘􀁌􀁖􀁄􀀃 􀂳􀀰􀁈􀁕􀁆􀁄􀁇􀁒􀀃 􀀤􀁐􀁅􀁌􀁈􀁑􀁗􀁄􀁏􀂴􀀏􀀃 􀁇􀁒􀀃 􀀳􀁕􀁒􀁊􀁕􀁄􀁐􀁄􀀃 􀁇􀁈􀀃
Pós-Graduação em Direito, Relações Internacionais e Desenvolvimento, na
modalidade Mestrado Acadêmico, da Pontifícia Universidade Católica de Goiás e
apresenta 􀁘􀁐􀀃􀂳􀀳􀁄􀁑􀁒􀁕􀁄􀁐􀁄􀀃􀁇􀁒􀁖􀀃􀀵􀁈􀁖􀁴􀁇􀁘􀁒􀁖􀀃􀁇􀁈􀀃􀀨􀁔􀁘􀁌􀁓􀁄􀁐􀁈􀁑􀁗􀁒􀁖􀀃􀀨􀁏􀁰􀁗􀁕􀁌􀁆􀁒􀁖􀀃􀁈􀀃􀀨􀁏􀁈􀁗􀁕􀁻􀁑􀁌􀁆􀁒􀁖􀀝􀀃􀁒􀀃
lixo eletroeletrônico 􀂱 e-􀁏􀁌􀁛􀁒􀂴􀀑􀀃 A par do pressuposto de preocupação para com a
questão ambiental, o foco do estudo científico está em identificar a realidade
internacional e nacional que permeia o resíduo eletroeletrônico; conjugar os dados
disponíveis, identificar os riscos e, apontar a necessidade de gestão e manejo
ambientalmente adequado do e-lixo, não somente pelo Poder Público, mas sim, por
toda a sociedade, primordialmente, aqueles que participam da cadeia produtiva de
produtos elétricos e eletrônicos. Diante da conjuntura estrangeira e doméstica
verificar-se-á que produtos eletroeletrônicos são descartados como sucata após o
ciclo de vida útil, por vezes de modo inapropriado, face à omissão governamental de
alguns Estados e a ausência de ações específicas para a gestão e manejo idôneo
do lixo eletrônico. Nesse sentido, são elucidados aspectos críticos e positivos de
ordenamentos jurídicos externos e interno em relação ao objeto de análise.
Interessa, pois, a percepção de quão importante são os cuidados com o resíduo
eletroeletrônico e como são amplas as implicações e reflexos em decorrência da
gestão inadequada dos mesmos. Restam evidenciadas iniciativas pontuais sobre
reutilização, reciclagem e destinação final do e-lixo, em prevenção à poluição
ambiental. Sobretudo e, com vistas à proteção ambiental, enseja-se fomentar
discussões inteligíveis, para propiciar à Administração Pública, empresas e
sociedade elementos científicos robustos a fim de efetivar mecanismos de tutela e
controle do descarte de resíduos de equipamentos elétricos e eletroeletrônicos. A
metodologia aplicada ao esforço acadêmico consiste num esforço hipotéticodedutivo,
no qual se parte de uma análise racional de fatores gerais e específicos,
para evidenciar a realidade internacional e doméstica acerca dos resíduos de
equipamentos elétricos e eletrônicos, com a finalidade de ressaltar a importância da
gestão ambientalmente adequada dessa espécie de resíduo sólido.
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Ecomigrantes, refugiados ou deslocados ambientais: populações vulneráveis e mudança climáticaMás, Heyd Fernandes 29 August 2011 (has links)
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Previous issue date: 2011-08-29 / Droughts, floods, severe storms, melting ice caps and consequent rise in sea level are some of the consequences of climate change. Concerning the human side of the climate change, some experts estimate that 200 million to 250 million people will be forced off their land by mid-century and the European Union itself has already established that migration pressure will increase substantially due to this issue. Considering this scenario, it becomes urgent that the rights of thousands of individuals and groups of people displaced by the climate change be recognized. Nowadays, there is no framework convention able to provide protection and assistance for those affected populations. In fact, this new category of climate or environmental misallocated persons, refugees or migrants seems to be problematic and controversial. Two different options are presented as a viable legal solution for this impasse: the first one would be to consider them as a type of refugee in this sense the 1951 Convention on the Status of Refugees should be reviewed; the second one points to the direction of a negotiation of a new convention, and therefore a terminological definition based on the human rights law or specifically on the climate change by enhancing the international legal mechanisms for the construction of guiding principles to deal with this new category of misallocated people. This discussion, which is blended with the need of deepening knowledge on the matter of climate and international environmental law, is intrinsically related to the issues of human rights and citizenship, expressed, in a wider range global one where it could be named the matter of global citizenship, as consequence of solidarity among all peoples. Even though there are still possible contradictions between the affirmation of human rights and the classical concept of citizenship, the existence of global matters as the climate change must lead to the affirmation of solidarity among all people. / Secas, inundações, tempestades, derretimento das calotas polares e consequente elevação do nível do mar são alguns dos efeitos das alterações climáticas. Em relação à face humana da mudança climática, especialistas da União Europeia estimam que de 200 a 250 milhões de pessoas serão forçadas a deixar suas terras em meados do século e que a pressão migratória irá aumentar substancialmente em função dessa problemática. Diante desta realidade, torna-se urgente que os direitos de milhares de indivíduos e grupos de pessoas que fazem parte dessas populações afetadas sejam reconhecidos. Atualmente, não existe convenção-quadro que possa oferecer proteção e assistência a tais grupos ou indivíduos. Inclusive, o fato é que esta nova categoria de deslocados, ecomigrantes, refugiados ambientais ou refugiados do clima apresenta-se como problemática e controversa. Duas possibilidades bastante distintas se apresentam como solução jurídica a esse impasse: a primeira seria considerá-los como uma espécie de refugiados - neste sentido, a Convenção de 1951, relativa ao Estatuto dos Refugiados, deveria ser revista; a segunda solução aponta para negociação de uma nova convenção e, portanto, uma adequação terminológica a partir do prisma dos direitos humanos ou especificamente da mudança climática por meio do aprimoramento dos mecanismos jurídicos internacionais existentes para construção de princípios de orientação para
lidar com esta nova categoria de pessoas deslocadas. Essa discussão, permeada pela necessidade de aprofundamento de conhecimento sobre a questão do clima e do direito ambiental internacional, relaciona-se intrinsicamente com a problemática dos direitos humanos e cidadania, expressados em um alcance mais amplo que o usual âmbito global onde se destaca o tema da cidadania global, decorrente da solidariedade entre os povos. Ainda que possam existir contradições entre a afirmação dos direitos humanos e o clássico conceito de cidadania, a existência de problemas globais, tal como a mudança do clima, deve conduzir a afirmação da solidariedade entre povos.
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The identification of environmentally sound technologies for healthcare waste management in LesothoRamabitsa-Siimane, Ts’aletseng M 11 May 2006 (has links)
Waste resulting from healthcare activities is hazardous due to its potential risk of infection to healthcare workers, waste workers and the public. Many tools and approaches have been applied in waste management in developed countries, but are not suitable for application in developing countries due to their complexity and extensive data and resource requirements. WasteOpt was therefore developed and applied as an appropriate decision-making tool in the developing country context. WasteOpt comprises of the Analytical Hierarchy Process (AHP), costing and Life cycle management (LCM). The purpose of this study was to identify environmentally sound technologies (ESTs) that minimise the risk of infection by healthcare waste (HCW) in rural clinics. Rural clinics were selected because apart from financial constraints, they are challenged by the lack of procedure, infrastructure and technologies to develop reasonable waste management plans that can be implemented within a practicable time frame. WasteOpt was applied to aid in identifying ESTs in relation to the infection risks and costs of the technologies. Experts in waste management in Lesotho were involved in a workshop for the ranking of technologies. The overall weighting values of the rankings were converted to risk factors for individual options and for alternatives (combination of options). Risk factors were classified as low, medium and high risk. The technologies within a single class were differentiated by analysing the cost of acquiring and running the technology to qualify as ESTs. The ESTs identified for Lesotho are Engineered containers, Refrigerated engineered facility, engineered wheeled transport, detailed procedures, multi chamber incinerator, engineered pit and landfill. Ten (10) clinics in Lesotho were also assessed as case studies using the WHO RAT. The RAT was first modified to include questions on financial management at the clinics. The calculated risk factors were applied to the case studies to assess the risk under which healthcare workers operate in those clinics. The additive minimum risk for the overall life cycle of waste was 4.0 (excluding central treatment and disposal). The clinic workers were found to be at a risk of between 1.1 x 10-4 and 7.8 x 10-5, which proves that rural clinics in Lesotho are still using inappropriate technologies. In terms of financing for waste management, public clinics were found to have little decision-making powers over funds and had less accountability measures. CHAL clinics which are managed by churches in Lesotho had more control of funds and exhibit more accountability. All clinics had no targets for saving funds from waste management activities. WasteOpt can be applied as a decision-making tool for HCW in Lesotho since it overcomes the barriers that inhibit environmentally sound management of HCW in developing countries. In conclusion: WasteOpt can be applied as a decision-making tool for different types of waste by replacing HCW options with respective ones and designing a relevant questionnaire for qualitative data capture. WasteOpt can then be applied in a developing country to aid sustainable waste management decision-making. Informed decision-making helps resource poor managers to select cost-effective but low-risk options, which will be sustainable in the future. / Dissertation (MSc (Environmental Technology))--University of Pretoria, 2007. / Chemical Engineering / unrestricted
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Udržitelný rozvoj cestovního ruchu na Vysočině / Sustainable tourism development of Vysocina RegionVeselá, Markéta January 2016 (has links)
The diploma thesis deals with the topic of sustainable tourism development at the regional level. This phenomenon is elaborated on the example of Vysocina Region. To evaluate sustainability of its development, the potential of this touristic destination is researched regarding various areas, including key products. These are subjected to comparisons with recommendations of significant tourism organization for the purpose of assessing the sustainability of tourism. The diploma thesis also includes a comparison with other Czech regions experience as a touristic destination. Vysocina Region has favourable initial conditions for its sustainable development, especially regarding supply of key products, which include both environmentally friendly goods and cultural attractiveness contributing to the personal development of individuals and promoting intercultural tolerance. The main issue appears to be the spatial imbalance of its development in the region, caused mainly by the concentration of tourist activities to certain areas and low local initiative in the less attractive areas. The diploma thesis proposes a number of solutions, such as utilization of geocaching and products of gastroturism, supporting the foundation of local destination management organisations, promoting cycling tourism and the foundation of highly visited tourist destinations.
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Processos participativos em comunidade indígena: um estudo sobre a ação política dos Ingarikó face à conservação ambiental do Parque Nacional do Monte Roraima / Participative processes in an indigenous community: political activism of the Ingarikó tribe motivated by environmental conservation in Mount Roraima National Park.Ricardo Burg Mlynarz 10 April 2008 (has links)
O presente estudo baseia-se na vivência do pesquisador como membro participante de assembléias realizadas e organizadas pelos índios Ingarikó, em 2005, em Roraima, especificamente na Terra Indígena Raposa Serra do Sol. Essas assembléias visavam discutir as alternativas de gestão do território ocupado pelo grupo Ingarikó, em função da dupla afetação do mesmo como Terra Indígena e Unidade de Conservação. O pesquisador se inscreveu como membro das assembléias, a partir de um convite a ele formalizado por uma liderança Ingarikó, tendo exercido o papel de articulador da organização indígena denominada Conselho do Povo Indígena Ingarikó (Coping), recém-criada nos momentos que antecederam as assembléias. Participaram dessas assembléias, além das lideranças e de membros das comunidades Ingarikó, representantes dos órgãos governamentais envolvidos com a gestão de Terras Indígenas e de Unidades de Conservação, no âmbito local e federal, dentre os quais assumem relevância no presente estudo a Fundação Nacional do Índio (Funai) e, à época, o Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (Ibama). Tal condição permitiu ao pesquisador, na qualidade de observador participante das referidas assembléias, levantar e analisar informações que propiciaram o conhecimento de como se dava a ação do grupo Ingarikó no exercício da gestão política do território em questão. Essa ação indicou haver uma apropriação da categoria Parque Nacional de forma específica pelo grupo, denotando aspiração de soberania nas decisões e ações, políticas e de gestão, sobre o futuro das regras e técnicas de uso do território. Essa indicação baseou-se na observação das formas de condução das assembléias, na convivência do pesquisador no contexto do modo de vida Ingarikó e nas verbalizações ocorridas durante as assembléias e em conversas com membros da comunidade. Além disso, a observação fundamentou a percepção de que o chamamento das assembléias pelos Ingarikó, assim como o seu desenvolvimento, refletiam um aprendizado dos índios com relação aos modelos de desempenho de ações políticas exercidas pelos atores institucionais do Ibama, da Funai e de organizações indígenas, permitindo também o fortalecimento de uma identidade Ingarikó. Em síntese, a análise do desenrolar das assembléias, em sua totalidade, levou à abstração de que havia, subentendida no comportamento do grupo Ingarikó, uma vinculação entre o respeito aos direitos indígenas sobre as terras que ocupam e a conservação ambiental, conforme estabelecido nos fundamentos originais que justificaram a constituição histórica da legislação indígena do Estado brasileiro, cuja política está centralizada na categoria jurídica Terra Indígena. Paradoxalmente, foi possível constatar que essa essencial vinculação não está presente na forma como as políticas públicas indigenistas e ambientais se materializam, exigindo, de seus agentes, um esforço na busca de articulação das mesmas na ação. / The present study was based on the experience of one researcher participating in assemblies organized and conducted by the Ingariko tribe in the Indian lands known as the Raposa Serra do Sol, in the state of Roraima, Brazil. These assemblies, held in 2005, were aimed at discussing alternative forms of managing the territory occupied by the Ingariko tribe, a territory that, in addition to having been officially set aside for use by indigenous peoples, has been designated an environmentally protected area (Mount Roraima National Park). The researcher was formally invited to participate in the assemblies by one of the leaders of the Ingariko tribe. The invitation came as a result of the coordinating role played by the researcher in the organization known as the Ingariko Indigenous Peoples Council, which was created in the weeks leading up to the assemblies. In addition to the leaders and members of the Ingariko villages, representatives of governmental agencies involved in the management of Indian lands and environmentally protected areas were in attendance. Among such agencies were the Fundação Nacional do Índio (Funai, National Indian Foundation) and the Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (Ibama, Brazilian Institute for the Environment and Renewable Natural Resources). During these assemblies, the researcher, in the role of participating observer, was able to raise questions and analyze information regarding the activism of the Ingariko tribe in influencing the political management of the disputed territory. The researcher noted that the intervention by members of the tribe resulted in their appropriation of the classification \'National Park\' in a form specific to the tribe, denoting an aspiration to have sovereignty in making decisions and plans, in terms of policies and management, regarding the future use of the territory. This conclusion was reached based on the manner in which the assemblies were conducted and on the personal experience of the researcher, who was familiar with the Ingariko way of life, as well as on statements made during the assemblies and in conversations with members of the community. In addition, the fact that the Ingariko called for and organized these assemblies indicates their political maturation in relation to models of political activities sanctioned by the institutional actors (Ibama, Funai and other organizations involved in indigenous issues), as well as the strengthening of the Ingariko cultural identity. In summary, the analysis of the way in which the assemblies proceeded, overall, and of the behavior of the Ingariko tribe, led to the abstraction that respect for Indian land rights and environmental conservation are inextricably linked. This link has its foundation in the constitutional and legislative history of Brazil in relation to Indian rights and issues affecting indigenous peoples, the central focus of which, in legal terms, is Indian lands. Paradoxically, it became apparent that this essential link is not taken into consideration during the formation of public policies related to indigenous and environmental issues. Therefore, public officials must consciously attempt to incorporate this idea into their interpretation and implementation of such policies.
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Kan inrikessjöfarten vara en del i att nå Sveriges klimatmål? : -En fallstudie i olika transportsätts miljöpåverkan / Domestic sea transport a part in reaching Sweden’s climate goals? : -A case study in the environmental impact of different modes of transport.Furehed, Gustav, Lanfelt, Patrik January 2020 (has links)
Arbetet med att minska människans utsläpp av växthusgaser är en fråga som är högaktuell idag. Transportsektorn är den sektor som har näst störst klimatpåverkan inom EU-området. För att minska transportsektorns klimatpåverkan anser EU-kommissionen att en del av det gods som idag går på väg behöver flyttas till tåg eller sjö för att nå EU:s miljömål. Syftet med arbetet var att undersöka skillnaden av växthusgasutsläpp för transport av containrar beroende på transportsätt på sträckan Göteborg till Stockholm. De undersökta transportsätten var lastbil, godståg och containerfartyg. Studien använde en empirisk fallstudie där växthusgasutsläpp beräknades utifrån empiriska bränsleförbruknings data. Fallstudien kompletterades med en intervju från en person med stor erfarenhet av godstransporter på sträckan. Resultatet av undersökningen är att järnvägens miljöverkan är minst, men för tidskänsligt gods är fortfarande vägtransport det effektivaste transportslaget. För att sjöfart ska vara ett miljömässigt alternativ måste anpassningar av fartyg och/eller drift göras. / The work to reduce greenhouse emissions created by humans is a question that is highly relevant today. The transport sector is the second largest emitter of greenhouse gases in the European Union. To reduce the greenhouse emissions from the transport sector the EU commission has said that some of the freight that currently is being transported by road must move to rail or sea transport in order to reach EU environmental targets. The scope of this study is to compare the greenhouse emissions based on fuel consumption from domestic container transport between Gothenburg and Stockholm. The different modes of transports studied were trucks, freight train and container ship. The study was conducted using an empirical case study to calculate the greenhouse gas emissions using empirical fuel consumption data. The case study was supplemented by an interview with a person with great insight in the transport business. The result from the study shows that from an environmental perspective container transport by rail should be used. Transport by road is still the best means of transport for time sensitive cargo. If transport by sea is to be an environmental option, there has to be adjustments on either ships or management or both.
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Obec jako zadavatel zelených veřejných zakázek / Municipality and GPPŠlechtová, Markéta January 2021 (has links)
1 Abstract With effect from 1 January 2021, municipalities, as contracting authorities, have to comply with environmentally responsible procurement principles, taking into account the nature and purpose of the contract. In this context, we are talking about green public procurement, the requirements of which arise from the European Union directives. This thesis deals with green public procurement by municipalities in the Czech Republic. Since this issue has not yet been explored and widespread in the Czech Republic, the introduction of the new obligation may cause difficulties for municipalities in practice. Therefore, this paper focuses on the attitudes of Czech municipalities towards green public procurement and analyses the specifics of the preparation of green public procurement compared to other public procurement and the resulting new requirements imposed on municipalities. The thesis is intended to serve as a basic insight into the examined issues as well as a potential basis for the practice of municipalities as contracting authorities. The thesis is based on the theoretical background of public interest, sustainable development, good governance and public finance. In terms of methodology, a qualitative type of research was chosen for the purposes of this thesis and a case study was chosen as a type...
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Studie proveditelnosti - zavedení nového produktu na trh - zelené úvěry / Feasibility Study - Entry of New Product Into the Market - Green CreditsJungwirth, Michal January 2010 (has links)
This diploma thesis describes by a feasibility study the introduction of a new product, which has the name Green credits. This project responds to a flexible manner on a prospective and dynamically growing market for environmentally friendly and energy-saving solutions and its implementation may allow a particular financial institution to obtain the position of leader and new business in this market.
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Development and Investigation of Bio-based Environmentally Friendly Fire Retardant PLA CompositesZhao, Pengcheng 17 June 2019 (has links)
In der vorliegenden Dissertationsarbeit wird auf die Thematik der Entwicklung von Polymerwerkstoffen, basierend auf vollständig natürlichen Resourcen, eingegangen. Die vorliegende Lösung beruht auf der Compoundierung von Polylactid mit unterschiedlich modifizierten Vanillin. Ziel war es, flammschutzwirkende Komponenten einzubringen und die Abhängigkeiten zwischen Zusammensetzung und Eigenschaften aufzuklären. Dem liegt die Absicht zugrunde, optimale Werkstoffe zur Verfügung zu stellen, die sich durch deutlich verbesserte flammhemmende und mechanische bzw. thermo-mechanische Eigenschaften auszeichnen.
Die erzeugten modifizierten Vanillin-Derivate sowie deren Composite wurden hinsichtlich der physikalischen und chemischen Struktur mittels REM, EDX, FTIR, NMR, DSC, TGA, SEC und Zugversuch charakterisiert. Zur Bestimmung der flammwidrigen Eigenschaften wurden UL-94 V, LOI und CCT durchgeführt. Es hat sich gezeigt, dass System aus PLA und einem Vanillin-Phosphorsäure-Ester in Bezug auf werkstofflichen Eigenschaften insgesamt die optimale Leistung aufwies. Die Materialen ergaben eine verbesserte Zähigkeit und erheblich erhöht flammwidrige Eigenschaften. In einem weiteren Schritt wurden MMT und APP, zwei kommerzielle Flammschutzmittel, mit dem PLA/VP System kombiniert. Die daraus abgeleiteten Resultate bewiesen eine synergistische Wirkung zwischen VP und MMT bzw. APP und führten zu besseren Brandklassen bei LOI und UL-94 Brandtests. / The present work demonstrates the development of fully bio-based polymeric composites. It was realized by the compounding of poly(lactic acid) and differently modified vanillin. The aim of this work was to introduce flame retardant components into PLA and to study the flame retardant mechanism. The intention of this approach is the preparation of optimized PLA composites with significantly improved flame retardant, mechanical as well as thermo-mechanical properties.
The modified vanillin and the PLA composites based on those vanillin derivatives were characterized by means of SEM, EDX, FTIR, NMR, DSC, TGA, SEC and tensile test for their physical and chemical structures. UL-94 V, LOI and CCT were carried out to determine the corresponding flame retardant properties. The results showed that, the PLA/VP system represented the best overall performance. The PLA/VP composite exhibited increased toughness and significantly improved flame retardancy. In addition, two commercialized flame retardants, MMT and APP, were introduced into the PLA/VP system, respectively. It was suggested that there were synergic effects between VP and MMT as well as APP. The combined used flame retardants resulted in an improved classification in UL-94 and LOI tests.
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The metabolism of socio-economic systems:combination of input-output analysis and material flow accounting for footprint-type indicatorsPiñero, P. (Pablo) 03 December 2019 (has links)
Abstract
This thesis explored innovative ways to improve estimation of material footprint-type indicators in application of Input-Output (IO) analysis to Material Flow Accounting. The following six research questions were addressed: 1) What is the potential impact of sector aggregation in IO modelling of raw material flows? Modelling errors due to aggregation of industries with dissimilar material requirements and trade structures into a single sector in IO models when calculating the material footprint were empirically analysed relative to greenhouse gas emissions. Significant biases emerged for raw material flows, which suggests that care should be taken when aggregating extractive sectors in IO models. 2) Can bottom-up approaches, such as LCA (Life Cycle Assessment), improve estimation of the raw materials embodied in trade products? and 3) What are the implications of integration of country-specific information from high geographical coverage IO models into LCA approaches for calculation of raw material embodied in trade products? An approach for combining country-specific production blueprints with LCA based on regional averages was developed. This approach proved useful in refining estimates of upstream raw materials embodied in trade products, although care is needed during its application since new biases may arise. 4) Can further perspectives be gained with a new allocation method, the ‘value added-based material footprint’, which assigns supply chain-wide raw material extractions to each participating economic actor according to its added value generation, contributing to discussions on the distribution of mitigation costs? Certain countries and sectors were found to be more material-intensive with this new accounting approach than in other widely known allocation methods, e.g. consumer footprint. 5) Are there unequal exchanges between high-income economies and middle- and lower-income countries when measured in terms of raw material and value added flows? and 6) Could integration of local and global IO data provide useful insights to study presence/absence of unequal material exchange at sub-national level? A study of material flows at inter- and intra-national level demonstrated that a regional economy can play a twofold role, both as sink or source of raw materials and in value added, depending on its position in the global economic hierarchy. / Tiivistelmä
Tässä työssä tutkittiin innovatiivisia tapoja, joilla voitaisiin parantaa materiaalijalanjälki -tyyppisten indikaattoreiden käytettävyyttä panos-tuotos (Input-Output, IO) -analyysissa, kun niitä sovelletaan Materiaalivirta-analyysi (Material Flow Accounting, MFA) -metodiin. Seuraaviin tutkimuskysymyksiin haettiin vastauksia: 1) Mikä on sektorien yhdistämisen potentiaalinen vaikutus raaka-ainevirtojen IO-mallintamisessa ja miten poikkeamia voidaan estää? Tämän puitteissa tarkasteltiin mallinnusvirheitä, jotka johtuvat erilaisten toimialojen yhdistämisistä yhdeksi sektoriksi. 2) Voivatko alhaalta ylöspäin suuntautuvat lähestymistavat, kuten elinkaariarviointi parantaa tuotteisiin sisältyvien raaka-ainevirtojen arviointia? ja 3) Mitä vaikutuksia on laajan maantieteellisen kattavuuden IO-malleihin sisältyvien maakohtaisten tietojen yhdistämisestä LCA-pohjaisiin lähestymistapoihin, kun tavoitteena on laskea tuotteisiin sisältyviä raaka-ainemääriä? Tämän tutkimista varten kehitettiin lähestymistapa, joka yhdisti maakohtaiset tuotantosuunnitelmat ja elinkaariarvioinnin. Tämä lähestymistapa osoittautui hyödylliseksi tarkentamalla arvioita tuotteissa olevista raaka-aineista, vaikkakin sen soveltaminen edellyttää varovaisuutta, koska uusia vääristymiä voi syntyä. 4) Voidaanko uusia näkökulmia löytää uudella arvonlisäykseen perustuvalla allokointimenetelmällä, joka jakaa raaka-aineen louhinnan kullekin toimintaketjun osallistuvalle taloudelliselle toimijalle lisäarvon tuotannon mukaan? Tämän uuden kirjanpitomenetelmän mukaan jotkut maat ja alat ovat materiaali-intensiivisempiä kuin niitä on pidetty kulutuksen jalanjälkiallokointimenetelmien perusteella. 5) Onko korkean tulotason talouksien ja keskitasoiselle ja alhaiselle tulotasolle asettuvien maiden välillä epätasaisia vaihtoja, kun raaka-ainekulutusta ja arvonlisäystä mitataan? ja 6) Voisiko paikallisten ja globaalien IO-tietojen integrointi antaa hyödyllisiä näkökulmia tutkimukseen, joka tarkastelee epätasaisen aineenvaihdon esiintymistä tai puuttumista alueellisella tasolla? Materiaalivirtojen tutkiminen kansainvälisellä ja kansallisella tasolla, jossa yhdistettiin IO-tietokannat erilaisella maantieteellisellä resoluutiolla osoitti, että alueellisella taloudella voi olla kaksoisrooli sekä raaka-aineiden että arvonlisäyksen lähteenä tai nieluna riippuen sen asemasta globaalissa taloushierarkiassa.
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