Electronic Waste
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Halogen Determination in Polymeric Waste of Electrical and Electronic Equipment: Overcoming Limitations in Sample Preparation
Sample preparation of polymers for halogen determination requires special attention because they are difficult to bring into solution and due to the risk of analyte losses when using acid digestion. A method using microwave-induced combustion (MIC) was optimized for accurate determination of halogens in polymeric parts obtained in waste of electrical and ele
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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2. LASER INDUCED-BREAKDOWN SPECTROSCOPY (LIBS): HISTÓRICO, FUNDAMENTOS, APLICAÇÕES E POTENCIALIDADES
This review attempts to present a broad view of the technique laser-induced breakdown spectroscopy (LIBS), since its origin, fundamentals, sample preparation strategies, use of chemometric tools for data processing, the advantages and limitations with regard to qualitative and quantitative analysis, aplications and future trends as an analytical technique th
Quím. Nova. Publicado em: 18/07/2019
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3. Selecting chemicals for separation of ABS and HIPS in WEEE by froth flotation
Abstract The feasibility of using common chemicals to separate plastics from waste electrical and electronic equipment (WEEE) by froth flotation is investigated. Plastic waste is one of the WEEE polluters and a separation is necessary to recycle it. The most common plastics in electronic industries are acrylonitrile-butadiene-styrene (ABS) and high impact po
Polímeros. Publicado em: 10/06/2019
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4. Análises de risco na operação de usinas de reciclagem de resíduos eletroeletrônicos (REEE)
Resumo O manuseio de resíduos eletroeletrônicos (REEE), se executado de forma inadequada, possui grande potencial para causar severos danos ao meio ambiente e à saúde dos trabalhadores que executam estas tarefas. A identificação e avaliação de riscos ambientais, de saúde e segurança do trabalhador são ferramentas essenciais para prevenir acidentes
Gest. Prod.. Publicado em: 16/05/2019
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5. Coleta seletiva em condomínios residenciais verticalizados do município de Vitória (ES): características operacionais e de participação social
Resumo A determinação das características operacionais e de participação social de iniciativas de coleta seletiva no município de Vitória, no Espírito Santo, Brasil, envolveu oito condomínios residenciais verticalizados. Para avaliar o comportamento da geração de resíduos sólidos/recicláveis, foram executadas 16 campanhas durante um mês. Em tr
urbe, Rev. Bras. Gest. Urbana. Publicado em: 09/05/2019
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6. Operational conditions of an electrostatic separator for concentrate copper from electronic waste
Abstract Interest in recycling for the recovery of valuable substances, such as precious metals from electric and electronic waste has been increasing year after year due to the large amount present in such waste compared to primary sources. There is environmental concern, since the amount of this kind of waste is increasing due to rapid technological advanc
REM, Int. Eng. J.. Publicado em: 2018-07
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7. Selective Adsorption of AuIII from Aqueous Solution Using 2,5-Dimercapto-1,3,4-thiadiazole Modified Persimmon Tannin
A one-pot synthesized persimmon tannin (PT)-based novel biosorbent modified with 2,5-dimercapto-1,3,4-thiadiazole (DMTD) was prepared for the selective adsorption of AuIII from aqueous mixtures. The synthesized biosorbent was designated as DMTD-PT and characterized using elemental analysis, zeta potential, Fourier transform infrared (FTIR) spectroscopy and X
J. Braz. Chem. Soc.. Publicado em: 2018-07
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8. Toughening of polystyrene using styrene-butadiene rubber (SBRr) waste from the shoe industry
Abstract The vulcanized rubber waste from the shoe industry causes environmental damage when it is incinerated or inappropriately discarded, turning this into a problem of major concern. Therefore, this study had as the main objective the Polystyrene (PS) toughening using different contents of white vulcanized styrene-butadiene rubber (SBRr) waste produced i
REM, Int. Eng. J.. Publicado em: 2018-04
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9. Lead hazard evaluation for cathode ray tube monitors in Brazil
Abstract Cathode ray tube (CRT) monitors are electronic equipment mainly made of glass, polymers and metals. These devices became obsolete because of emerging technologies such as LCD, LED and plasma; thus generating a huge stockpile of e-waste worldwide. In this CRT study, a natural leaching simulation (NBR10005) was performed to determine the toxicity of t
Braz. J. Chem. Eng.. Publicado em: 2018-01
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10. Determination of Inorganic Contaminants in Electrical and Electronic Equipment after Digestion Using Microwave-Assisted Single Reaction Chamber
A method for digestion of plastics from waste of electrical and electronic equipment (WEEE) was developed using the microwave-assisted wet digestion in single reaction chamber (MAWD-SRC). The determination of As, Cd, Co, Cr, Cu, Ni, Pb, Sb and Zn by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrom
J. Braz. Chem. Soc.. Publicado em: 2017-09
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11. Recycling and Mechanical Characterization of Polymer Blends Present in Printers
More and more electronic devices are being produced and most of them are disposed of improperly. In addition, as they contain heavy metals and toxic substances in their composition, the environmental impact increases. This work aims to study the recycling of polymers present in e-waste through the mechanical characterization of polymer blends produced with t
Mat. Res.. Publicado em: 22/06/2017
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12. Nano Coated Lead Free Solders for Sustainable Electronic Waste Management
ABSTRACT Lead has been used in a wide range of applications, but in the past decades it became clear that its high toxicity could cause various problems. Studies indicate that exposure to high concentrations of lead can cause harmful damages to humans. To eliminate the usage of lead in electronic products as an initiative towards electronic waste management
Braz. arch. biol. technol.. Publicado em: 23/01/2017