1000 resultados para Solventes - Reciclagem


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A gestão de resíduos em distribuidoras de eletricidade é bastante complexa, pois enquadram-se em vários tipos (valorizados ou não) e gerados em grande quantidade. Em 2009, a AES Eletropaulo gerou quase quatro mil toneladas de resíduos não perigosos, subdivididos em 30 tipos. Uma divisão por materiais, após desmontagem e separação dos diferentes materiais contidos nos fios, cabos, chaves, isoladores com ferragem e para-raios, subiria o valor da venda em R$ 600 mil. Isso geraria cerca de 214 toneladas de porcelana que, moídas, poderiam substituir as 210 toneladas de brita compradas anualmente pela concessionária para uso em subestações. Cerca de 160 toneladas de porcelanas intactas poderiam ser utilizadas na confecção de gabiões para contenção de encostas. Além disso, peças de ferro galvanizado poderiam ser decapadas e novamente galvanizadas para reaproveitamento.

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Art can be understood as a process in which knowledge is used to perform certain skills. From Latin ARS, technical means and / or ability, in Greece, there was the word art, but "Tekne", which originated from the word "technical." So art and technique are present in sculptures, paintings, shoes or ships. In this sense, designers, engineers and all professionals who use technology can be called artists. Considerations must be made regarding the level of energy embedded in the material from its production until its use, even considering recycling, sustainability and life cycle of materials. This study aimed to present the use of scanning technology and 3D virtual modeling and its application in prototyping with CNC (Computed Numerical Control) as a tool in current use cutting-edge courses in arts, design and engineering and their relations with sustainability.

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The issue of environmental impacts to human health and the generation and disposal of solid waste has led to a change of paradigms for your face, highlighting the need for sustainable management of municipal solid waste (MSW). In this context, the expansion of landfills in Brazil in recent decades makes it necessary to sustainable management of waste generated by this type of enterprise, since its implementation. The aim of this study was to perform a diagnosis of the generation of waste in a landfill, in the expansion phase, and the alternatives adopted for its management. The qualitative diagnosis was made from observations on site and the wastes were classified and quantified from August 2011 to January 2012. In the diagnosis was considered the reduction, reuse and recycle, in that order. The results of this study showed that the residue of the greatest generation was PEAD geomembranes used in the waterproofing of the landfill, reaching 7 t, followed by PVC pipes, which reached 850 kg, both destined for recycling. The largest volume of wastewater generated corresponded to the leachate, reaching 11,500 m3 , which were sent for treatment

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The present article is an investigation / action regarding the working conditions for pickers of recyclable waste in a medium-sized city in the state of São Paulo, mainly on the health / illness process, problems related to social security and conditions of autonomy and citizenship. We use the constructs of social psychology as theoretical. The recycling of urban garbage, as the literature indicates, is not being treated as just part of the solution to environmental problems, but also has been characterized as a source of income and livelihood for many people, with no other options in life. From the interviews were semistructured, and with the method of analysis the meaning core were identified issues related to the holding of by scrap collectors, prejudice existing in relation to the activity performed, poor housing conditions, the need to social recognition and the difficulty of recyclable garbage collectors in forming a group in which they can articulate and fight for their demands. With this study, we intended to indicate suggestions for improvements in these health professionals and encourage individual and collective reflections on the condition of meetings and also through the distribution of leaflets.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Mecânica - FEB

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O desenvolvimento tecnológico crescente associado a profundas mudanças no modo de vida contemporâneo tem gerado volumes de rejeitos cada vez maiores. Um desses rejeitos são as garrafas feitas de PET. Essas garrafas podem ser aproveitadas para construções de ambientes em substituição dos tijolos. O objetivo deste trabalho foi estudar os aspectos necessários para a realização das obras de construção de um ambiente com materiais recicláveis analisando tipos, quantidades e custos dos materiais de construção e mão-de-obra. Além disso, criou-se estratégias para a arrecadação de garrafas pet, métodos de preenchimento das mesmas e mecanismos de divulgação do projeto intitulado ?Projeto Casa PET?. O estudo comprovou que a garrafa pet pode substituir o tijolo, que um dos materiais adequados para preenchê-las é o solo-cimento e que este tipo de construção tem despertado o interesse de pessoas de diversos locais do Brasil e até mesmo de outros países. Em futuros trabalhos, pretende-se comprovar que o ambiente é uma alternativa viável tanto do ponto de vista econômico e ambiental.

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The objective of this study is to evaluate the potencial microbial activity in-vitro from the extract of some endemic plants from Cerrado such as Baccharis dracunculifolia, Cochlospermum regium, Croton antisyphiliticus, Eugenia dysenterica and Lippia sidoides, against the agent Staphylococcus aureus isolated from bovine mastitic milk, osteo from cow’s teat, milker equipament, nasal cavitites and milker’s gullet. The extracts were prepared from aerial parts as well as the reticular systems of plants using the solvents methanol, hexane and chloroform at a concentration of 10%. To evaluate the antimicrobial activity, the technique of microdilution in broth was used for determining the Minimal Inibitory Concentration (MIC) followed by the determination of Minimal Bactericidal Concentration (MBC). The extracts from Baccharis dracunculifolia and Croton antisyphiliticus, followed by extracts from Lippia sidoides, reported respectively, presented better inhibitory activity against the multiplication of the bacteria Staphylococcus aureus. Furthermore, the results demonstrate that the isolated strains from the milk and nasal cavities of the milker showed strong resistance against gentamicin, active agent commonly applied to combat mastitis bovine. However, there was sensitivity against extracts from the reported plants, reinforcing the importance of the medicinal plants as a therapeutic resource and its aplicability.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)