Bioadsorbent
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Adsorption of lead and copper ions from aqueous effluents on rice husk ash in a dynamic system
This study evaluated the kinetic adsorption of Pb and Cu ions using rice husk ash as adsorbent in a fixed bed. The maximum adsorption capacities obtained for lead and copper ions in the fixed bed were 0.0561 and 0.0682 mmol/g (at 20 ºC), respectively. The thermodynamic studies indicated that the lead adsorption process was exothermic and spontaneous, while
Braz. J. Chem. Eng.. Publicado em: 2014-06
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2. Characterization and use of in natura and calcined rice husks for biosorption of heavy metals ions from aqueous effluents
Heavy metal removal by adsorption using rice husks as a bioadsorbent was evaluated as an alternative for wastewater treatment. Batch equilibrium experiments and kinetic sorption studies were performed using monocomponent solutions of Ni(II), Cd(II), Zn(II), Pb(II) and Cu(II) in surface samples of in natura(RH) and calcined rice husks (RHA). RHA showed higher
Braz. J. Chem. Eng.. Publicado em: 2012-09
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3. Avaliação do processo adsortivo utilizando mesocarpo de coco verde para remoção do corante cinza reativo BF-2R
This work used green coconut mesocarp as a bioadsorbent to remove Reactive Gray BF-2R dye. A 2³ factorial design was used to evaluate the influence of the variables adsorbent mass, particle size and stirring speed on the adsorptive process. Kinetic and adsorption equilibrium studies were performed. Results showed that the kinetic equilibrium was reached aft
Química Nova. Publicado em: 2012
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4. Evaluation of sugar-cane bagasse as bioadsorbent in the textile wastewater treatment contaminated with carcinogenic congo red dye
Neste trabalho foi desenvolvida uma metodologia de remoção do corante carcinogênico congo red de sistemas aquosos. Os resultados mostraram uma elevada eficiência de remoção sendo de 64 ± 6% para soluções sintéticas de vermelho congo, e 94 ± 5% para efluente industrial enriquecido com vermelho congo utilizando 10 g de bioadsorvente. A capacidade m�
Brazilian Archives of Biology and Technology. Publicado em: 2010-08
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5. Secagem de biomassa de levedura (Saccharomyces cerevisiae) em um secador atmosferico condutivo com agitação mecanica : caracterização e avaliação do produto seco como bioadsorvente e complemento nutricional / Drying of yeast biomass (Saccharomyces cerevisiae) in a mechanically shaken conductive atmospheric dryer : characterization and evaluation of the dry material as bioadsorbent and nutritional complement
This thesis allowed evaluating the conductive atmospheric dryer with mechanical agitation, using glass beads as inert particles for drying a residue from brewery (yeast of Saccharomyces cerevisiae species) after being used eight times. The dryer was operated with the sediment load of yeast (150 g and 300 g), heating surface temperature (60 ºC and 90 ºC) an
Publicado em: 2010
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6. Remoção de cobre em álcool etílico hidratado combustível utilizando amêndoas de baru (Dypterix alata)
Nesse estudo foi desenvolvida uma metodologia para remoção do cobre presente em álcool etílico hidratado combustível, utilizando amêndoas de baru (Dypterix alata). Para investigar a capacidade de adsorção das amêndoas de baru, foram realizados estudos variando-se o tipo de tratamento químico, faixa granulométrica, tempo de contato e pH da soluçã
Publicado em: 2010