Activated Coal
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Post-treatment of landfill leachate using rice husk ash as adsorbent medium
Resumo O aterro sanitário é o método mais geral de disposição de resíduos sólidos urbanos. Porém, no processo de degradação da matéria orgânica é produzido um líquido de coloração escura de alto potencial poluente sendo necessário tratamento adequado antes de seu lançamento nos corpos de água. Diversas tecnologias podem ser utilizadas no t
Rev. Ambient. Água. Publicado em: 01/08/2019
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2. Avaliação da adsorção do herbicida 2,4-D em carvão ativado em pó e granular por meio de análises de isotermas de adsorção utilizando diferentes qualidades de água
This research aims to evaluate the activated carbon (AC) physical-chemicals characteristics generated from coconuts peel and pinus and associate them to 2,4-D herbicide adsorption capacity of studied activated carbons by adsorption isotherms assay in destilated and deionized water (DDW) and filtered water (FW) from Freundlich and Langmuir models, as well as
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/06/2012
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3. Efetividade da UtilizaÃÃo de Incubadoras de CO2 Equipadas com filtro Hepa e Filtro Hepa-Voc para Cultivo de EmbriÃes em Ciclos de FertilizaÃÃo in Vitro / Effectiveness of Using CO2 Incubators equipped with HEPA filters and HEPA-You for Cultivation of Embryos in IVF Cycles
Introduction and objectives. The air quality in sterile environment is an important aspect to cell culture. It is known the culture conditions are essential for in vitro human embryo development; however there is no standardization for incubator filters in in vitro fertilization (IVF) laboratories. Recently, the incubator air quality has been receiving atten
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2010
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4. Remoção de compostos orgânicos causadores de gosto e odor em águas de abastecimento em sistemas pós-filtros adsorvedores de carvão ativado granular. / Removal of taste and odor producing organic substances in water supply in post-filter granular activated carbon adsorber systems.
The main purpose of this research was to study the performance of granular activated carbon post filter adsorbers made of bituminous coal and vegetal coal (coconut), regarding, mainly, removal of 2-methylisoborneol and trans-1,10-dimethyltrans- 9-decalol. The experimental researches were conducted in the water treatment plant Alto da Boa Vista, using four pi
Publicado em: 2009
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5. Purificação da glicerina bruta obtida a partir da transesterificação do óleo de algodão / Purificação da glicerina bruta obtida a partir da transesterificação do óleo de algodão
The crude glycerine is a raw material that can be used in a wide variety of products. Even with all the impurities inherent in the process of being obtained, the crude glycerin is already in a marketable product. However, the market is much more favorable to the commercialization of purified glycerine. The glycerin is a byproduct gotten from the process of t
Publicado em: 2009
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6. AdsorÃÃo dos corantes reativos azul 5G e azul turquesa QG em carvÃo ativado comercial / Adsorption of reactive dyes 5G and turquoise QG onto commercial activated coal
The textile industries understand one of the largest of the world now in production terms and number of generated jobs. They are characterized by requesting great amounts of water, coloring and chemical products used along a complex productive chain. Besides the enormous consumption of water, those industries generate effluent composed by organic and complex
Publicado em: 2008
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7. Extração e purificação de cafeína da casca de café
In 2006, Brazil consolidated its position as the world s largest producer and exporter of coffee, when were produced around 41.573.000 bags (60 kg) of benefited coffee. During the processing of dry coffee fruit, a big amount of coffee husk mass is generated in accordance with coffee variety. Aiming at adding commercial value to coffee husk, this work deals o
Publicado em: 2007
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8. Reator de leito expandido em escala plena com zonas anaeróbia e aeróbia sobrepostas: remoção conjunta de matéria orgânica e nutrientes e estudo do comportamento microbiológico do biofilme, por respirometria e microsensor de OD / Full scale expanded bed reactor with overlaid anaerobic and aerobic zones: joint removal of organic matter and nutrients and the study of microbiological biofilm behavior and DO microsensor
The current research aimed the development of a 159 M POT.3total volume biological reactor, with a expanded and partially aerated granular coal bed (activated and anthracite), to promote organic matter and nutrients (N and P) removal from wastewater due to the maintenance of anaerobic and aerobic environments, stratified throughout the height of the reactor
Publicado em: 2007
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9. AvaliaÃÃo fÃsico-quÃmica da remediaÃÃo de solos contaminados por BTEX
This research had as objective to evaluate the efficiency of the reactive means in the removal of aromatical hydrocarbons BTEX (Benzene, Toluene, Etil Benzene and Xylenes) in the ground, coming of leak of gasoline, either in fuel stations or underground tanks, and to explain the physico-chemical mechanisms that occuring on the system. The experiment was carr
Publicado em: 2006
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10. Estudo de mistura solo-carvão ativado como barreira reativa no tratamento de lixiviados de resíduos sólidos urbanos
Esta pesquisa tem por objetivo avaliar a adsorção de metais pesados às partículas sólidas de um solo residual de arenito e misturas desse solo com carvão ativado nas proporções de 1%, 5% e 10% em volume, base seca. Assim, foram propostos dois tipos de ensaios: ensaio de coluna e ensaio de equilíbrio em lote para analisar a aplicabilidade da técnica
Publicado em: 2006
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11. AvaliaÃÃo do processo de adsorÃÃo da microcistina-LR por carvÃo ativado
Because of the increase of the number of reports of acute and chronic intoxications, as much in animals as in human beings, for toxins produced by cyanobacteria in the water, there is already a great concern on the part of the companies responsible for the treatment and distribution of drinking water. The application of adsorption process for coal activated
Publicado em: 2005
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12. ADSORÇÃO DE UM ÁCIDO GRAXO UTILIZADO EM FLOTAÇÃO POR VERMICULITA HIDROFÓBICA
In this work are presented studies to evaluate the adsorption capacity of the expanded vermiculite mineral and of the vermiculite hydrophobized mineral originating from the states of Piauí and Goiás with different size. Tests of adsorption were accomplished in direct contact systems with oil, contact with solution oil-water that simulates oil spilling in t
Publicado em: 2005