• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 28
  • 23
  • 10
  • 5
  • 4
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 77
  • 50
  • 33
  • 31
  • 30
  • 23
  • 20
  • 18
  • 17
  • 15
  • 12
  • 12
  • 10
  • 10
  • 10
  • 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.
61

Ökonomische Analyse der Rückgewinnung von hochwertigen Metallen aus elektrischen und elektronischen Altgeräten in Deutschland

Greif, Steffi 03 December 2009 (has links)
Die vorliegende Ausgabe beschäftigt sich mit dem Thema „Ökonomische Analyse der Rückgewinnung von hochwertigen Metallen aus elektrischen und elektronischen Altgeräten in Deutschland“. Elektro- und Elektronikgeräte sind aus dem täglichen Leben nicht mehr wegzudenken; die Unternehmen entwickeln und produzieren immer leistungsfähigere Produkte, wobei durch die immer schnelleren und kurzlebigeren Innovationszyklen die Abfallberge ausgedienter Elektro(nik)geräte beständig wachsen. Mit Inkrafttreten des Elektro- und Elektronikgerätegesetz am 24. März 2005 werden alte Elektro(nik)geräte zukünftig getrennt gesammelt und weitgehend verwertet. Neu ist, dass die Hersteller mehr Verantwortung für ihre Produkte übernehmen und zur Verwertung der getrennt gesammelten Elektro- und Elektronik-Altgeräten verpflichtet sind. Das Elektro- und Elektronikgerätegesetz geht zum einen aus der europäischen Richtlinie über die Entsorgung von Elektro- und Elektronik-Altgeräten (WEEE) und zum anderen aus der europäischen Richtlinie über die Verwendung bestimmter gefährlicher Stoffe in Elektro- und Elektronikgeräten (RoHS) hervor und gilt als Reaktion auf die wachsenden Elektro(nik)schrott-Berge. Für die Unternehmen der Entsorgungs- und Recyclingbranche ergeben sich mit diesen gesetzlichen Neuerungen neue Chancen auf Weiterentwicklung ihres Geschäftsfeldes. Besonderes Augenmerk gilt den Demontageunternehmen, mit deren Hilfe erst die gesetzlichen Forderungen, hinsichtlich der zu erzielenden Rückgewinnungsquoten und der notwendigen selektiven Behandlung einiger Baugruppen, erfüllt werden können. Die Rückgewinnung hochwertiger Metalle aus Elektro(nik)schrott bedarf im Hinblick der Preissteigerungen auf den Rohstoffmärkten höchster Priorität. Mit Etablierung eines Sekundärrohstoffmarktes kann ein rohstoffarmes Land wie Deutschland der Abhängigkeit des Importes von Primärrohstoffen signifikant entgegenwirken.
62

Evaluation of informal sector activities in Germany under consideration of electrical and electronic waste management systems

Lange, Ulrike 24 September 2013 (has links)
The informal sector is described as groups of persons who act in parallel to official waste management systems without official authorisation. Such informal activities can result in risks as well as benefits both to the environment and involved stakeholders, which explains the continuing lively discussions in politics, science and society. Transhipments of waste electrical and electronic equipment (WEEE) are increasingly focused in Germany. In addition to informal exports via the port of Hamburg to countries such as China, Ghana or Nigeria, informal transports to Eastern European countries have been recognised for decades. This paper describes investigations regarding the characteristics, transhipped amounts as well as the eco-efficiency of informal sector activities originating from Eastern European countries, while thereby highlighting transhipments of used appliances to destination countries and a corresponding sale for reuse. Investigations reveal that a majority of informal collectors originate from Poland, Czech Republic, Hungary and Romania and are recognised across Germany. A high WEEE specialisation was determined, whereby average annual transhipped amounts are estimated at 77,000 tons. Collected materials are transhipped and partially sold for reuse. A case study considers the example of Polish informal collectors. The ratio between economic and environmental performance reveal that informal sector reuse activities in Poland achieve a higher environmentally sound performance in comparison to further usage of appliances under consideration. The informal collection of a television in Germany (and subsequent reuse in Poland) causes 8.34 kg less specific CO2 emissions per spend-costs (€) than the production, usage and further use in Poland. Conversely, a further use of a television in Germany only results in 2.2 kg less CO2 emissions per spend-costs (€). These results demonstrate that reuse as a result of informal sector activities can have a positive effect. Future electrical and electronic products available for reuse will have lower energy consumptions. A positive contribution to resource protection is thereby achieved while extending already short life cycles. Taking into account a dependency on collections with respect to their income, a pure ban of informal sector activities would therefore be socially counterproductive. A structured and controlled accomplishment of informal collection processes would open up new opportunities to enlarge the (already existing) concept of reuse at an international level.
63

Prvková analýza plochých zobrazovacích zařízení pro urban mining / Elemental analysis of the flat display devices for urban mining

Štípek, Radek January 2016 (has links)
aaaaaRare earth elements (Sc, Y and group 15 lanthanides) and their compounds currently have significant practical use in metallurgy, glass industry, as highly active catalysts for the production of so-called. NiMH batteries, alloys for the manufacture of permanent magnets and e.g. moderators rods in the nuclear energy, but above all they have an irreplaceable role in modern electronics for phosphors TV screens, CRT earlier today, PDP and LCD monitors and displays, tablets, mobile phones etc., which give them a high-quality picture and sound. Unlike most base and precious metals are concentrated in the conquerable ore deposits, occur in the form of compounds as part of mixed minerals in the rarely economically exploitable concentrations, a mining and processing is costly and negative impacts on the environment, paradoxically towards the title but their overall content in the crust is relatively high, the average concentration in the range of about 150 to 220 ppm. The main world producer of REE, China, in 2010, significantly reduced exports by 40 %, making prices of some REE increased up to 1500 % during the month. Demand for REE is growing, so often talks about the recycling of valuable materials back into production, as called. "Urban mining", ie "urban mining", thereby reducing the amount of...
64

綠色供應鏈協同運作策略之研究--以資訊製造業個案公司為例

謝成章 Unknown Date (has links)
在全球化的經濟蓬勃發展下,環保事件層出不窮,地球環境遭受重大破壞,各種環保議題引起國際矚目與熱烈討論。歐洲議會在2003年初公布了針對十項電機電子設備的兩個環保相關規範,分別是歐盟電機電子設備有害物質限制使用指令(RoHS)與歐盟電機電子設備廢棄物指令(WEEE),另外,歐盟能源使用產品生態化設計指令(EuP)也已在2005年8月11日公布,這些指令對相關產業的營運與發展將造成重大衝擊,其影響深遠供應鏈上下游成員無一倖免。 產業界為因應此一環保規範限制,將環境因素納入到傳統供應鏈管理當中,而形成了所謂「綠色供應鏈管理」的熱門議題。其主要差異乃是後者將生命週期思維融入產品設計、製造、使用與最終的廢棄回收處理的整個範疇。 本研究嘗試由資訊製造業的個案公司實際發展綠色供應鏈的過程中,以個案分析的方式收集其產品發展流程的各種資料,包括綠色設計、綠色採購、綠色供應商評鑑與稽核、綠色資訊平台建置等,並予以整理分析,建立個案公司的綠色供應鏈管理策略架構與協同運作模式。 本研究結果顯示綠色供應鏈管理策略的核心是「源頭管理」,源頭管理落實之後,加上其所衍生出來的綠色供應商評鑑與稽核、綠色產品管理系統、綠色資訊整合等各項活動,始能達到符合環保規範的目標,做到完整的風險控管,讓企業穩健發展。同時,本研究也顯示,建立協同設計機制及PDM資訊平台可以有效分析處理供應鏈上下成員間流通的資料,譬如,原物料、零組件等源頭綠色資料被有效地整合於綠色資訊平台,企業因應環保法規落實到資訊管理裡,營運風險因而獲得保障。 / Accompanying the vigorous economic development, the environment of the earth has been impacted tremendously. There are so many environmental issues that occurred in past decades turning into hot topics among nations. European Parliament published RoHS, and WEEE Directives in early 2003 that mandate ten categories of electric and electronic equipments to be restricted in the use of hazardous substances and wastes disposal respectively. Also, the setting of ecodesign requirement for Energy-Using Products newly announced in August of 2005. All the three mandatory EU Directives has definitely influenced significantly the foregoing development of the related industries. To react to the environmental regulations, the industries try to put environmental element into conventional Supply Chain Management, SCM. Thus, come out with Green SCM. The key differences are the latter mingling life cycle thought through out the whole scope of product life span. This research attempt to establish a collaborative structure and strategy for Green Supply Chain Management, by means of analyzing the information collected from the real developing process, including green design, green procurement, green suppliers’ appraisal, building up green information platform, of an information manufacturing firm. The research revealed that the core strategy of Green SCM is “Source Management”. Only if source management has fully implemented at the site of raw materials and component manufacturers, the environmental regulations can compliant thoroughly. Thus, the risk management is well controlled, so that the firm would operate soundly. Meanwhile, the research also showed that building up collaborative mechanism to link with PDM platform may process effectively the flowing data between the parties of supply chain. As a result, the restricted hazardous substances data of raw material and components are integrated into the green information platform and well managed. The operation risk of enterprise would be secured because of the entire implementation of information management for the environment regulations.
65

Resíduos de equipamentos elétricos e eletrônicos em instituições de ensino superior: estudo de caso e diretrizes para elaboração de plano de gestão integrada / Electrical and electronic equipment waste in Higher Education Institutions: a case study and guidelines for the development of an integrated management plan

Reidler, Nivea Maria Vega Longo 27 March 2012 (has links)
Introdução: no Brasil, ainda não há legislação específica, em nível nacional, sobre resíduos de equipamentos elétricos e eletrônicos (REEE). Com a regulamentação da Política Nacional de Resíduos Sólidos, as instituições de ensino superior (IES) no país se deparam com a necessidade de criar sistemas de gestão integrada que incluam logística reversa e disposição desses equipamentos ao final de sua vida útil. Objetivo: estudar a geração, fluxo e destino dos REEE de IES e propor diretrizes para a gestão institucional desses resíduos. Estudou-se o caso de duas IES, em dois cenários distintos: A) a Universidade de São Paulo (Brasil), sem influência de legislação específica sobre o tema e que não possui política de resíduos consolidada; B) A Universidade de Cádiz (Espanha), sob influência das Diretivas da União Europeia e de legislação nacional e que conta com política de resíduos e sistemas integrados de gestão de REEE. Método: análise quali/quantitativa em ambas as IES que constou de: I) Diagnóstico da geração, fluxo e destino dos REEE. Técnica utilizada: levantamento dos dados censitários dos bens que sofreram processo de baixa em um período de dez anos, no sistema de informação da Administração Patrimonial; II) Criação de nova base de dados, com inclusão de classificação dos REEE por tipo, peso médio e periculosidade; III) Pesquisa participativa com os responsáveis por setores envolvidos com a gestão interna de REEE; e IV) Observação sistemática, com registros fotográficos e de dados obtidos, em locais de destino de REEE e em nove Sistemas de Gestão Integrada de REEE (SIG-REEE) da Espanha. Resultados: o diagnóstico foi apresentado aos responsáveis por setores envolvidos com a gestão interna desses resíduos nas instituições, com objetivo de coletar sugestões para um plano de gestão de REEE que atendesse às suas necessidades e expectativas. Os resultados desta pesquisa levaram à proposta de diretrizes para a gestão institucional de REEE, orientando a execução das ações de controle de seus impactos econômicos, sociais, ambientais e de saúde de forma integrada e que seja sustentável e possa ser adaptado a quaisquer tipos de instituição, com flexibilidade para atender a diferentes necessidades e realidades. Conclusão: I) Os procedimentos adotados atualmente nas IES estudadas não atendem aos requisitos fundamentais de sustentabilidade. II) Constatou-se que fatores internos determinam os caminhos da gestão externa do REEE. III) As diretrizes propostas para gestão integrada de REEE baseiam-se em três etapas principais: a) planejamento para aquisição do EEE; b) vida útil; c) gestão de REEE. O estudo conclui que para se conseguir um sistema de gestão sustentável e efetivo, é necessário considerar todas as etapas do ciclo de vida do produto, a partir do planejamento para sua aquisição, até seu destino final. Para que o sistema de gestão de REEE em IES seja efetivo, propõe-se a integração da gestão de EEE/REEE / Introduction: in Brazil, there is no specific law at the national level for the disposal of electrical and electronic equipment waste (WEEE). With the National Solid Waste Policy regulations, Higher Education Institutions (HEI) in the country are faced with the need to create integrated management systems that include reverse logistics and disposal of such equipment at the end of its life time. Objective: to study the generation, flow, and destination of WEEE from HEI and propose guidelines for developing an institutional management system for such waste. Two HEIs in two distinct scenarios were analyzed: A) the University of São Paulo (Brazil), which operates without the influence of legislation on the subject and does not have a consolidated waste policy; and B) The University of Cádiz (Spain), which operates under European Union Directives and national legislation, featuring an integrated waste management policy on WEEE. Methods: qualitative/quantitative analyses in both institutions consisted of: i) Diagnosis of the generation, flow, and destination of WEEE based on census data on goods that have undergone a process of decline over a period of ten years in the Administração Patrimonial (Asset Management) information systems; ii) Creation of a new database, which includes the classification of WEEE by type, average weight, and hazard risk; iii) Research with the participation of the responsible parties of the sectors involved with the internal management of WEEE, and iv) Systematic observation, with photographic records and retrieved data from WEEE destinations and from nine Integrated Management Systems of WEEE (SIG-REEE) in Spain. Results: the diagnoses were presented to the responsible parties of the sectors involved with the internal management of such waste in institutions, with the objective of gathering suggestions for a WEEE management system that meets needs and expectations. The results led to the proposal of guidelines for the preparation of an institutional WEEE management plan, to orient the implementation of sustainable practices in order to better control economic, social, environmental, and health impact in an integrated manner that is sustainable and can be adapted to any type of institution, with enough flexibility to meet different needs and realities. Conclusion: I) the procedures currently in effect in HEI do not meet the core requirements of sustainability II) It was noted that internal factors determine the paths of external WEEE management. III) The guidelines proposed in this study for integrated management of WEEE were based on three main stages: a) acquisition of the EEE, b) useful life period; c) WEEE management. The study concludes that to achieve a sustainable and effective management system, it is necessary to consider all stages of the life cycle of a product, from planning to acquisition, to its final destination. The integration of EEE/WEEE management is recommended
66

Reciclagem do copolímero acrilonitrila-butadieno-estireno e do poliestireno de alto impacto oriundos de rejeitos de equipamentos elétricos e eletrônicos na forma de blendas poliméricas / Recycling of copolymer acrylonitrile-butadiene-styrene and high impact polystyrene from waste electrical and electronic equipment in the form of polymer blends

Hirayama, Denise 14 August 2015 (has links)
O crescimento na geração de rejeitos de equipamentos elétricos e eletrônicos (REEE), legislações mais rigorosas e o valor agregado destes materiais incentivam o desenvolvimento de tecnologias de reciclagem. Contudo, a reciclagem dos componentes poliméricos dos REEE (CP-REEE) precisa superar desafios como a degradação durante o uso e reprocessamento, a presença de diferentes aditivos nos rejeitos e a depreciação de propriedades causada pela mistura não controlada de polímeros. Assim, o objetivo deste trabalho foi desenvolver um estudo sobre a reciclagem mecânica na forma de blendas poliméricas de rejeitos do copolímero acrilonitrila-butadieno-estireno (ABS) e do poliestireno de alto impacto (HIPS), empregando agentes compatibilizantes. No desenvolvimento do trabalho foram realizadas a caracterização dos CP-REEE, análise das propriedades mecânicas, químicas, térmicas e morfológicas dos polímeros e das blendas de ABS/HIPS nas proporções de 1:3, 1:1 e 3:1 com variações na composição dos polímeros reciclados e virgens e por fim, realizado um estudo do envelhecimento foto-oxidativo acelerado de uma blenda ABS/HIPS. Os resultados mostraram que os polímeros ABS e HIPS reciclados ainda apresentam boas propriedades mecânicas e que a presença de agentes compatibilizantes provoca o aumento da tenacidade nas blendas ABS/HIPS. A incorporação de polímeros virgens nos materiais reciclados não promove ganho significativo nas propriedades mecânicas das blendas. Blendas com até 50% de ABS demonstraram ter propriedades próximas às do HIPS, enquanto as blendas com altos teores de ABS não alcançaram valores de propriedades mecânicas similares aos do ABS virgem. O comportamento das propriedades das blendas virgens e recicladas frente ao envelhecimento fotoquímico foi similar, indicando que o material reciclado apresenta grande potencial para aplicações. O estudo de blendas ABS/HIPS de CP-REEE demonstra que o controle da composição das blendas definem a sua aplicação. / The growth in waste electrical and electronic equipment (WEEE) generation, directives more stringent and the aggregate value presents in these waste are encouraging the development of recycling technologies. However, recycling of polymeric components from WEEE (PC-WEEE) must overcome challenges such as degradation during use and reprocessing, the presence of various additives in the waste and the depreciation of properties caused by uncontrolled polymers mixture. The aim of this work was to develop a study of the mechanical recycling in the form blends with of polymeric waste of acrylonitrile-butadiene-styrene copolymer blends (ABS) and high impact polystyrene (HIPS) using compatibilizers. During the study was carried out the characterization of the PCWEEE and mechanical, chemical, thermal and morphological analysis of the polymers and the ABS / HIPS blends in proportions of 1:3, 1:1 and 3:1 with recycled and virgin polymers, as well as a study of the accelerated photo-oxidative aging of the ABS/HIPS blends. The results showed that ABS and HIPS recycled polymers still have good mechanical properties and the presence of compatibilization agents leads to increased toughness in ABS/HIPS blends. The incorporation of virgin polymers in recycled materials does not promote significant gain in the mechanical properties of the blends. Blends with up to 50% ABS have demonstrated to be closer to the HIPS, while blends with high content of ABS did not reach values of mechanical properties similar to the virgin ABS. The mechanical properties of virgin and recycled blends during the photochemical aging were similar, indicating that the recycled material has great potential for applications. The study of ABS/HIPS blends from PC-WEEE demonstrated that control of the blend composition establish their applications.
67

Étude expérimentale et optimisation fonctionnelle des installations de séparation électrostatique de mélanges de matériaux granulaires / Experimental study and optimization of electrostatic separators for granular materials mixtures

Richard, Gontran 12 April 2018 (has links)
La démarche expérimentale menée dans cette thèse CIFRE a eu comme objectif l’étude de la faisabilité de la séparation électrostatique d’une large gamme de mélanges de matériaux granulaires issus de déchets d’équipements électriques et électroniques (conducteur – isolant, conducteur – conducteur et isolant – isolant). Trois mécanismes physiques de charge électriques ont été mis en oeuvre : l’induction électrostatique, la décharge couronne et l’effet triboélectrique. Un dispositif de charge de laboratoire et deux séparateurs électrostatiques industriels ont été conçus et réalisés. Le dispositif de charge à cylindre(s) tournant(s) permet la charge triboélectrique de matériaux plastiques. Le prototype de séparateur industriel a d’abord été réalisé pour le traitement de mélanges granulaires conducteur – isolant puis a été adapté à la séparation isolant – isolant. Les trois mécanismes de charge peuvent y être utilisés. Ce prototype a permis la fabrication du premier séparateur électrostatique de série de la société CITF dédié à la séparation de déchets de câbles électriques. Des mesures de charge et de masse ainsi que des simulations et visualisations des trajectoires des particules par caméra rapide ont facilité l’analyse des phénomènes. La méthode des plans d’expérience a permis d’identifier les facteurs influents sur les processus de séparation et de définir leur point de fonctionnement optimal. L’influence d’une décharge à barrière diélectrique sur la charge triboélectrique et la séparation électrostatique de mélanges plastiques a été étudiée. Les travaux réalisés dans cette thèse ont confirmé la séparabilité électrostatique de mélanges de matériaux granulaires. / The experimental approach used in this thesis was aimed at the study of the feasibility of the electrostatic separation of a wide range of granular mixtures from waste electric and electronic equipment (conductive – insulator, conductive – conductive, insulator – insulator). Three physical mechanisms of electrical charging have been employed: electrostatic induction, corona discharge and triboelectric effect. A tribocharging device and two industrial electrostatic separators have been designed and engineered. The rotating cylinder tribocharging device allows the triboelectric charging of plastics. The industrial separator prototype was firstly built for processing conducting – insulator granular mixtures and then adapted for insulator – insulator separation. This prototype, which enables the use of all three electrical charging mechanisms, served as model for the CITF company first industrial electrostatic separator for the recycling of metals and plastics from electric cable wastes. Charge and mass measurement, as well as modelling and visualization of particle trajectories by a high-speed camera facilitated the investigations. Design of experiments method was used to define the influential factors and find the optimum operating conditions of the separation processes. Dielectric barrier discharge exposure of granular plastics may enhance the efficiency of the triboelectric charging of these materials and hence facilitate their electrostatic separation. These researches have confirmed the feasibility of the electrostatic separation of a wide variety of granular mixtures.
68

Resíduos de equipamentos elétricos e eletrônicos em instituições de ensino superior: estudo de caso e diretrizes para elaboração de plano de gestão integrada / Electrical and electronic equipment waste in Higher Education Institutions: a case study and guidelines for the development of an integrated management plan

Nivea Maria Vega Longo Reidler 27 March 2012 (has links)
Introdução: no Brasil, ainda não há legislação específica, em nível nacional, sobre resíduos de equipamentos elétricos e eletrônicos (REEE). Com a regulamentação da Política Nacional de Resíduos Sólidos, as instituições de ensino superior (IES) no país se deparam com a necessidade de criar sistemas de gestão integrada que incluam logística reversa e disposição desses equipamentos ao final de sua vida útil. Objetivo: estudar a geração, fluxo e destino dos REEE de IES e propor diretrizes para a gestão institucional desses resíduos. Estudou-se o caso de duas IES, em dois cenários distintos: A) a Universidade de São Paulo (Brasil), sem influência de legislação específica sobre o tema e que não possui política de resíduos consolidada; B) A Universidade de Cádiz (Espanha), sob influência das Diretivas da União Europeia e de legislação nacional e que conta com política de resíduos e sistemas integrados de gestão de REEE. Método: análise quali/quantitativa em ambas as IES que constou de: I) Diagnóstico da geração, fluxo e destino dos REEE. Técnica utilizada: levantamento dos dados censitários dos bens que sofreram processo de baixa em um período de dez anos, no sistema de informação da Administração Patrimonial; II) Criação de nova base de dados, com inclusão de classificação dos REEE por tipo, peso médio e periculosidade; III) Pesquisa participativa com os responsáveis por setores envolvidos com a gestão interna de REEE; e IV) Observação sistemática, com registros fotográficos e de dados obtidos, em locais de destino de REEE e em nove Sistemas de Gestão Integrada de REEE (SIG-REEE) da Espanha. Resultados: o diagnóstico foi apresentado aos responsáveis por setores envolvidos com a gestão interna desses resíduos nas instituições, com objetivo de coletar sugestões para um plano de gestão de REEE que atendesse às suas necessidades e expectativas. Os resultados desta pesquisa levaram à proposta de diretrizes para a gestão institucional de REEE, orientando a execução das ações de controle de seus impactos econômicos, sociais, ambientais e de saúde de forma integrada e que seja sustentável e possa ser adaptado a quaisquer tipos de instituição, com flexibilidade para atender a diferentes necessidades e realidades. Conclusão: I) Os procedimentos adotados atualmente nas IES estudadas não atendem aos requisitos fundamentais de sustentabilidade. II) Constatou-se que fatores internos determinam os caminhos da gestão externa do REEE. III) As diretrizes propostas para gestão integrada de REEE baseiam-se em três etapas principais: a) planejamento para aquisição do EEE; b) vida útil; c) gestão de REEE. O estudo conclui que para se conseguir um sistema de gestão sustentável e efetivo, é necessário considerar todas as etapas do ciclo de vida do produto, a partir do planejamento para sua aquisição, até seu destino final. Para que o sistema de gestão de REEE em IES seja efetivo, propõe-se a integração da gestão de EEE/REEE / Introduction: in Brazil, there is no specific law at the national level for the disposal of electrical and electronic equipment waste (WEEE). With the National Solid Waste Policy regulations, Higher Education Institutions (HEI) in the country are faced with the need to create integrated management systems that include reverse logistics and disposal of such equipment at the end of its life time. Objective: to study the generation, flow, and destination of WEEE from HEI and propose guidelines for developing an institutional management system for such waste. Two HEIs in two distinct scenarios were analyzed: A) the University of São Paulo (Brazil), which operates without the influence of legislation on the subject and does not have a consolidated waste policy; and B) The University of Cádiz (Spain), which operates under European Union Directives and national legislation, featuring an integrated waste management policy on WEEE. Methods: qualitative/quantitative analyses in both institutions consisted of: i) Diagnosis of the generation, flow, and destination of WEEE based on census data on goods that have undergone a process of decline over a period of ten years in the Administração Patrimonial (Asset Management) information systems; ii) Creation of a new database, which includes the classification of WEEE by type, average weight, and hazard risk; iii) Research with the participation of the responsible parties of the sectors involved with the internal management of WEEE, and iv) Systematic observation, with photographic records and retrieved data from WEEE destinations and from nine Integrated Management Systems of WEEE (SIG-REEE) in Spain. Results: the diagnoses were presented to the responsible parties of the sectors involved with the internal management of such waste in institutions, with the objective of gathering suggestions for a WEEE management system that meets needs and expectations. The results led to the proposal of guidelines for the preparation of an institutional WEEE management plan, to orient the implementation of sustainable practices in order to better control economic, social, environmental, and health impact in an integrated manner that is sustainable and can be adapted to any type of institution, with enough flexibility to meet different needs and realities. Conclusion: I) the procedures currently in effect in HEI do not meet the core requirements of sustainability II) It was noted that internal factors determine the paths of external WEEE management. III) The guidelines proposed in this study for integrated management of WEEE were based on three main stages: a) acquisition of the EEE, b) useful life period; c) WEEE management. The study concludes that to achieve a sustainable and effective management system, it is necessary to consider all stages of the life cycle of a product, from planning to acquisition, to its final destination. The integration of EEE/WEEE management is recommended
69

PANORAMA DOS RESÍDUOS DE EQUIPAMENTOS ELÉTRICOS E ELETRÔNICOS (REEE): O LIXO ELETROELETRÔNICO E-LIXO

Magalhães, Diego de Castilho Suckow 11 August 2011 (has links)
Made available in DSpace on 2016-08-10T10:46:32Z (GMT). No. of bitstreams: 1 DIEGO DE CASTILHO SUCKOW MAGALHAES.pdf: 1368609 bytes, checksum: 5b7bf5336a8796459dad66c2db4b727d (MD5) 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.
70

Reciclagem do copolímero acrilonitrila-butadieno-estireno e do poliestireno de alto impacto oriundos de rejeitos de equipamentos elétricos e eletrônicos na forma de blendas poliméricas / Recycling of copolymer acrylonitrile-butadiene-styrene and high impact polystyrene from waste electrical and electronic equipment in the form of polymer blends

Denise Hirayama 14 August 2015 (has links)
O crescimento na geração de rejeitos de equipamentos elétricos e eletrônicos (REEE), legislações mais rigorosas e o valor agregado destes materiais incentivam o desenvolvimento de tecnologias de reciclagem. Contudo, a reciclagem dos componentes poliméricos dos REEE (CP-REEE) precisa superar desafios como a degradação durante o uso e reprocessamento, a presença de diferentes aditivos nos rejeitos e a depreciação de propriedades causada pela mistura não controlada de polímeros. Assim, o objetivo deste trabalho foi desenvolver um estudo sobre a reciclagem mecânica na forma de blendas poliméricas de rejeitos do copolímero acrilonitrila-butadieno-estireno (ABS) e do poliestireno de alto impacto (HIPS), empregando agentes compatibilizantes. No desenvolvimento do trabalho foram realizadas a caracterização dos CP-REEE, análise das propriedades mecânicas, químicas, térmicas e morfológicas dos polímeros e das blendas de ABS/HIPS nas proporções de 1:3, 1:1 e 3:1 com variações na composição dos polímeros reciclados e virgens e por fim, realizado um estudo do envelhecimento foto-oxidativo acelerado de uma blenda ABS/HIPS. Os resultados mostraram que os polímeros ABS e HIPS reciclados ainda apresentam boas propriedades mecânicas e que a presença de agentes compatibilizantes provoca o aumento da tenacidade nas blendas ABS/HIPS. A incorporação de polímeros virgens nos materiais reciclados não promove ganho significativo nas propriedades mecânicas das blendas. Blendas com até 50% de ABS demonstraram ter propriedades próximas às do HIPS, enquanto as blendas com altos teores de ABS não alcançaram valores de propriedades mecânicas similares aos do ABS virgem. O comportamento das propriedades das blendas virgens e recicladas frente ao envelhecimento fotoquímico foi similar, indicando que o material reciclado apresenta grande potencial para aplicações. O estudo de blendas ABS/HIPS de CP-REEE demonstra que o controle da composição das blendas definem a sua aplicação. / The growth in waste electrical and electronic equipment (WEEE) generation, directives more stringent and the aggregate value presents in these waste are encouraging the development of recycling technologies. However, recycling of polymeric components from WEEE (PC-WEEE) must overcome challenges such as degradation during use and reprocessing, the presence of various additives in the waste and the depreciation of properties caused by uncontrolled polymers mixture. The aim of this work was to develop a study of the mechanical recycling in the form blends with of polymeric waste of acrylonitrile-butadiene-styrene copolymer blends (ABS) and high impact polystyrene (HIPS) using compatibilizers. During the study was carried out the characterization of the PCWEEE and mechanical, chemical, thermal and morphological analysis of the polymers and the ABS / HIPS blends in proportions of 1:3, 1:1 and 3:1 with recycled and virgin polymers, as well as a study of the accelerated photo-oxidative aging of the ABS/HIPS blends. The results showed that ABS and HIPS recycled polymers still have good mechanical properties and the presence of compatibilization agents leads to increased toughness in ABS/HIPS blends. The incorporation of virgin polymers in recycled materials does not promote significant gain in the mechanical properties of the blends. Blends with up to 50% ABS have demonstrated to be closer to the HIPS, while blends with high content of ABS did not reach values of mechanical properties similar to the virgin ABS. The mechanical properties of virgin and recycled blends during the photochemical aging were similar, indicating that the recycled material has great potential for applications. The study of ABS/HIPS blends from PC-WEEE demonstrated that control of the blend composition establish their applications.

Page generated in 0.1033 seconds