E Waste
Mostrando 13-24 de 1337 artigos, teses e dissertações.
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13. Visual quality and waste of leafy vegetables in the retail market
RESUMO As Nações Unidas estimam que o desperdício de alimentos, no varejo e no consumo, atinge 17% da produção mundial de alimentos. Deste total, 2% ocorrem no varejo. Entretanto, estas estimativas embutem um grande grau de incerteza devido à estreita base de dados usada nesta estimativa, agravada pelo fato da quase totalidade dos dados ser proveniente
Horticultura Brasileira. Publicado em: 2022
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14. Effects of sintering temperature on microstructure and properties of sanitaryware ceramic produced with waste material
Abstract This paper aims at exploring the possibility of using a great percentage of recycled materials into vitreous china (VC), thus, contributing to urban waste decrease while lowering the industry’s buying costs, previously optimized, for the sanitaryware production. The recycled blend was introduced in the ceramic slip, Sanitser VC, and used in three
Cerâmica. Publicado em: 2021-03
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15. Análise do monitoramento ambiental da incineração de resíduos sólidos urbanos na Europa e a necessidade de alterações na legislação brasileira
RESUMO A incineração é uma tecnologia de tratamento térmico de resíduos sólidos cujo principal objetivo é a redução do volume e da massa dos resíduos a serem depositados em aterros. Os incineradores construídos nas últimas décadas trazem a possibilidade de recuperação energética dos resíduos, na forma de vapor e/ou energia elétrica, entreta
Eng. Sanit. Ambient.. Publicado em: 2021-02
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16. COMPOSTING PROCESS IN THE PRODUCTION OF LETTUCE SEEDLING SUBSTRATES: EFFECT OF COVERING AND TURNING FREQUENCY
ABSTRACT The composting of waste from a broiler chicken production chain (BCPC) promotes the mitigation of environmental impacts and allows the commercialization of compost as an agricultural input. Both the characteristics and the potential for use of the final compost depends on the operational conditions during composting. The objective of this study was
Eng. Agríc.. Publicado em: 2020-10
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17. QUANTIFICAÇÃO DO TEOR DE BIODIESEL DE CRAMBE EM MISTURAS COM DIESEL UTILIZANDO ESPECTROSCOPIA MIR E SELEÇÃO DE VARIÁVEIS
Mid-Infrared absorption spectroscopy associate with the Partial Least Squares regression is the official method to monitor Brazilian commercial diesel quality. This method, however, uses solvents and a large number of samples for the construction of the calibration curves, which generates waste and increases the time needed for the analysis. In order to deve
Quím. Nova. Publicado em: 2020-06
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18. INFLUENCE OF DIFFERENT TEMPERATURES AND AIRFLOWS ON DRYING OF NATURAL AND PULPED COFFEE
ABSTRACT This study aimed to evaluate drying kinetics for natural and pulped coffee, using different temperatures and drying airflows. For the conduction of the experiment, coffee fruits (Coffea arabica L. cv. Topázio) were harvested manually, selecting only ripe fruits and subsequent to the hydraulic separation. For drying the coffee, use a mechanical drye
Eng. Agríc.. Publicado em: 2020-04
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19. AVALIAÇÃO DE ADITIVOS DE FASE MÓVEL E TEMPERATURA NA VIDA ÚTIL DE COLUNAS PARA CROMATOGRAFIA LÍQUIDA DE ALTA EFICIÊNCIA
Buffered solutions, additives, and column temperature are widely used in high-performance liquid chromatography to promote adequate retention of compounds and to improve the chromatographic separation. However, these factors can dramatically reduce the column lifetime. In this work, the effect of column temperature, pH and the salt type and concentration in
Quím. Nova. Publicado em: 2020-03
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20. REUSE OF COLLAGEN AND HYDROXYAPATITE FROM THE WASTE PROCESSING OF FISH TO PRODUCE POLYETHYLENE COMPOSITES
In recent years, the increase in the generation of waste (e.g., bones and skin) from the processing of fish-based food related to the increase in fish consumption and the accumulation of synthetic polymers in the environment are causing major environmental concerns. Hydroxyapatite (HA) extracted from the bones and collagen from the skin of fish processing re
Quím. Nova. Publicado em: 2020-02
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21. Best videos of the year for 2019
The aims of the current study are to investigate the composition of biomass from baru processing and to explore the feasibility of valuing it through the development of bioproducts such as fermentable sugars, furanics and biochar. Baru (Dipteryx alata Vog.) waste (endocarp and mesocarp) has great energetic potential to produce bioproducts due to its chemical
Int. braz j urol.. Publicado em: 2020-02
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22. BIODIESEL SYNTHESIS FROM WASTE COOKING OIL USING A VARIETY OF WASTE MARBLE AS HETEROGENEOUS CATALYSTS
Abstract The research article is based on biodiesel synthesis by the transesterification of waste cooking oil with methanol in the presence of heterogeneous catalysts prepared from different marble. Eight samples of marble were successfully converted into potential catalysts by calcination. The thermal treatment of waste marbles at 300oC-1000oC converted the
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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23. Gerenciamento de resíduos em laboratórios de uma universidade pública brasileira: um desafio para a saúde ambiental e a saúde do trabalhador
RESUMO As instituições de ensino superior, enquanto geradoras e difusoras de conhecimento, precisam cada vez mais assumir seu papel no contexto regional, especialmente na criação de políticas sustentáveis e de preservação do meio ambiente. Neste sentido, o presente artigo objetiva compreender as práticas de gerenciamento de resíduos de serviços de
Saúde debate. Publicado em: 13/01/2020
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24. Desafios na gestão de resíduos de estabelecimentos de saúde públicos perante a RDC 222/18
RESUMO A RDC 222/18 representa um avanço na área da gestão dos resíduos de serviços de saúde, no entanto, alguns desafios precisam ser considerados para o alcance dos impactos esperados na saúde ambiental e na qualidade de vida da população. Nesta perspectiva, considerando que estabelecimentos de saúde públicos precisam ser regulados pelo órgão
Saúde debate. Publicado em: 13/01/2020