Degradation Anaerobic
Mostrando 13-24 de 415 artigos, teses e dissertações.
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13. Degradation of organic pollutants and characteristics of activated sludge in an anaerobic/anoxic/oxic reactor treating chemical industrial wastewater
A laboratory-scale anaerobic/anoxic/oxic system operated at the hydraulic retention times (HRT) of 20, 40, and 60 h with mixed liquor suspended solids (MLSS) concentrations of 3 g/L and 6 g/L was considered for treating chemical industrial wastewater rich in complex organic compounds and total dissolved solids. Extending the HRT and increasing the MLSS conce
Braz. J. Chem. Eng.. Publicado em: 2014-09
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14. Use of multivariate experimental designs for optimizing the reductive degradation of an azo dye in the presence of redox mediators
The optimization of the anaerobic degradation of the azo dye Remazol golden yellow RNL was performed according to multivariate experimental designs: a 2² full-factorial design and a central composite design (CCD). The CCD revealed that the best incubation conditions (90% color removal) for the degradation of the azo dye (50 mg L- 1) were achieved with 350 m
Quím. Nova. Publicado em: 2014-06
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15. Influence of co-substrates in the anaerobic degradation of an anionic surfactant
The removal of linear alkylbenzene sulfonate (LAS) was evaluated in a UASB reactor using short-chain alcohols (ethanol and methanol) and complex co-substrate (yeast extract). Using only methanol and ethanol as co-substrates resulted in removal of LAS between 30 and 41%. At the end, addition of a complex substrate (yeast extract) increased the removal of LAS
Braz. J. Chem. Eng.. Publicado em: 2013-09
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16. Las degradation in a fluidized bed reactor and phylogenetic characterization of the biofilm
A fluidized bed reactor was used to study the degradation of the surfactant linear alkylbenzene sulfonate (LAS). The reactor was inoculated with anaerobic sludge and was fed with a synthetic substrate supplemented with LAS in increasing concentrations (8.2 to 45.8 mg l-1). The removal efficiency of 93% was obtained after 270 days of operation. Subsequently,
Braz. J. Chem. Eng.. Publicado em: 2013-09
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17. AvaliaÃÃo de biodigestor tubular na degradaÃÃo anaerÃbia de cama de frango de corte / Evaluation of tubular biodigester in anaerobic degradation with roiler litter
In the twenty-first century, the broiler production has increased in the world and continues increasing due to the high consumption of this meat. The broiler litter is the largest amount of waste generated in poultry production. It is also characterized by its high concentration of organic matter. The broiler production integrated system defines a radius aro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/02/2012
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18. Tratamento de Ãgua residuÃria de fecularia em reator anaerÃbio com leito fixo de pedras de calcÃrio dolomÃtico / Starch wastewater treatment in anaerobic reactor containing Dolomitic limestone
The cassava processing for starch or flour production generates some wastewater (manipueira) with high organic load and toxic compounds, which cause environmental degradation. In the western Paranà region, there are several starch factories, so its waste generation is a concern for the correct treatment and disposal. Thus, anaerobic reactors are a cost-effe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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19. Phenol degradation in an anaerobic fluidized bed reactor packed with low density support materials
The objective of this research was to study phenol degradation in anaerobic fluidized bed reactors (AFBR) packed with polymeric particulate supports (polystyrene - PS, polyethylene terephthalate - PET, and polyvinyl chloride - PVC). The reactors were operated with a hydraulic retention time (HRT) of 24 h. The influent phenol concentration in the AFBR varied
Brazilian Journal of Chemical Engineering. Publicado em: 2012-03
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20. Degradação de bifenila policlorada e caracterização da comunidade microbiana de reator anaeróbio com biofilme / Studies on the biodegradation and degradation of polychlorinated biphenyl in anaerobious conditions
Métodos de Microbiologia de anaeróbios estritos e de Biologia Molecular foram empregados para se conhecer a diversidade de microrganismos relacionados à degradação de ascarel em reatores anaeróbios metanogênicos. A avaliação de potencial metanogênico foi realizada para a escolha da melhor condição nutricional, bem como, para a seleção de materi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/10/2011
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21. A procura de bactérias degradadoras de metamidofós. / Searching for methamidofos degrading bacteria.
Methamidophos is a strong acetylcholinesterase inhibitor and, therefore, a very toxic organophosphorus insecticide. This product has been widely employed for pest control in a variety of cultures, but little information is available about its biodegradation. 12 bacteria were isolated and characterized, from water and soil samples obtained from a site contami
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2011
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22. Suplementação com análogo de metionina HMB (2-Hidroxi-4-(Metil) ácido Butânico) em dieta de bovinos da raça Nelore terminados em confinamento / Supplementation with HMB (2-hydroxy-4-(methyithio) Butanoic acid) methionine analog in diet of Nellore cattle finished in feedlot
Two experiments were conducted to evaluate the inclusion of levels of HMB (DL, 2-hydroxy-4-(methyl) botanical acid) methionine in diets of Nellore beef cattle finished in feedlot. In Experiment 1, 128 male, unneutered Nellore animals, with initial weight of 290 kg ( 20,50), were housed for 111 days (21 days of adaptation and 90 days of experiment) in 16 pens
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2011
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23. Aspectos cinéticos da degradação aeróbia e anaeróbia de Cyperus giganteus, Eichhornia azurea e Egeria najas da lagoa do Óleo (Estação Ecológica de Jataí, Luiz Antônio, SP)
This study aimed to assess the effects of temperature on different aspects of aerobic and anaerobic degradation of aquatic macrophytes from different ecological groups: Cyperus giganteus (emergent), Eichhornia azurea (fixed floating) and Egeria najas (submerged). Considering these purposes, the carbon balance and mass decay, the cellulase and peroxidase acti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/2011
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24. Caracterização microbiana e degradação de detergente de uso doméstico em reator anaeróbio de leito fluidificado / Microbial characterization and degradation of household detergent in anaerobic fluidized bed reactor
A presente pesquisa teve como objetivo avaliar a remoção de alquilbenzeno sulfonado linear (LAS), presente na composição do detergente em pó doméstico e caracterizar os microrganismos do domínio Bacteria do reator anaeróbio de leito fluidificado. Para tal foi utilizado um reator anaeróbio de leito fluidificado contendo areia como material suporte co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011