Anaerobic Bioremediation
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. DegradaÃÃo anaerÃbica de BTEX em reatores alimentados com Ãgua contaminada por gasolina
The underground water quality has been damaged because of storage tank spills from gas stations. The most common organic pollutants are the BTEX compounds (benzene, toluene, ethylbenzene, and xylenes) as a consequence of their toxicity, carcinogenicity and teratogenicity. The use of anaerobic bioreactors is an alternative for the bioremediation of water cont
Publicado em: 2008
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2. Ecogenômica de archaea e monitoramento de comunidades de procariotos redutores de sulfato: aplicações na indústria de petróleo e gás
The human activities responsible for the ambient degradation in the modern world are diverse. The industrial activities are preponderant in the question of the impact consequences for brazilian ecosystems. Amongst the human activities, the petroliferous industry in operation in Potiguar Petroliferous Basin (PPB) displays the constant risk of ambient impacts
Publicado em: 2008
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3. Degradação do aldicarbe em biorreator anaeróbio horizontal de leito fixo / Aldicarb degradation in a horizontal-flow anaerobic immobilized biomass bioreactor
O objetivo principal deste trabalho foi avaliar o desempenho do biorreator anaeróbio horizontal de leito fixo (RAHLF) na degradação de aldicarbe em condições anaeróbias. Foram avaliados três níveis de oxidação: metanogênico, sulfetogênico e desnitrificante. Inicialmente foi desenvolvido o método de detecção de aldicarbe e metabólitos por meio
Publicado em: 2008
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4. Influência dos nutrientes nitrogênio e fósforo na degradação anaeróbia do pentaclorofenol e na diversidade microbiana dos sedimentos enriquecidos do Estuário de Santos-São Vicente, Estado de São Paulo / Influence of nitrogen and phosphorus nutrients on the anaerobic degradation of pentachlorophenol and on the natural microbial diversity of sediments from the Santos-São Vicente estuary, state of São Paulo, Brazil
The research presented here aimed to determine the optimal nutritional conditions for the use of sediment from the Santos-São Vicente estuary in the state of São Paulo, Brazil, as an inoculum for a horizontal-flow anaerobic immobilized biomass reactor (HAIB) applied to the anaerobic degradation of pentachlorophenol (PCP), seeking to apply the technology on
Publicado em: 2007
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5. Contribution to technological research of the microbial studies done at program BIOTA FAPESP: evaluation of anaerobic Pentachlorophenol (PCP) biodegradation in a horizontal-flow anaerobic immobilized biomass (HAIB) reactor / Contribuição à exploração tecnológica dos estudos microbianos realizados no programa BIOTA FAPESP: avaliação do potencial da degradação anaeróbia de pentaclorofenol (PCP) em reator anaeróbio horizontal de leito fixo (RAHLF)
O estudo que ora se apresenta integrou o conjunto de pesquisas do sub-projeto - Diversidade de Bactérias Associadas à Degradação de Compostos Recalcitrantes, do projeto temático BIOTA FAPESP - Ecologia Molecular e Taxonomia Polifásica de Bactérias de Interesse Ambiental e Agro-Industrial. Apresenta caráter inovador, na medida em que procurou avaliar
Publicado em: 2005
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6. Fungos degradadores de compostos organicos recalcitrantes sob condições microaerobia e anaerobia
The industrial activities of modern society produce great amounts of toxic compounds, which persist in rivers, soils and oceans, causing disturbance to ecosystems. Owing to an extracellular and non-specificenzymatic system produced by whiterot fungi, degradation of these xenobióticos became a viable alternative for environmental bioremediation. Such lignino
Publicado em: 2002
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7. Initial-phase optimization for bioremediation of munition compound-contaminated soils.
We examined the bioremediation of soils contaminated with the munition compounds 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine, and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetraazocine by a procedure that produced anaerobic conditions in the soils and promoted the biodegradation of nitroaromatic contaminants. This procedure consisted of f
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8. Enhanced Anaerobic Biodegradation of Benzene-Toluene-Ethylbenzene-Xylene-Ethanol Mixtures in Bioaugmented Aquifer Columns
Methanogenic flowthrough aquifer columns were used to investigate the potential of bioaugmentation to enhance anaerobic benzene-toluene-ethylbenzene-xylene (BTEX) degradation in groundwater contaminated with ethanol-blended gasoline. Two different methanogenic consortia (enriched with benzene or toluene and o-xylene) were used as inocula. Toluene was the onl
American Society for Microbiology.
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9. Bioremediation of soils contaminated with the herbicide 2-sec-butyl-4,6-dinitrophenol (dinoseb).
A novel soil treatment method for achieving the removal of dinoseb (2-sec-butyl-4,6-dinitrophenol) from contaminated soils was investigated. One soil contained dinoseb as the major contaminant, although several other hazardous compounds were also present. A second soil was highly contaminated with dinoseb. Dinoseb was not degraded in these soils under the ae
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10. Adhesion of Biodegradative Anaerobic Bacteria to Solid Surfaces
In order to exploit the ability of anaerobic bacteria to degrade certain contaminants for bioremediation of polluted subsurface environments, we need to understand the mechanisms by which such bacteria partition between aqueous and solid phases, as well as the environmental conditions that influence partitioning. We studied four strictly anaerobic bacteria,
American Society for Microbiology.
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11. Anaerobic Mineralization of Toluene by Enriched Sediments with Quinones and Humus as Terminal Electron Acceptors
The anaerobic microbial oxidation of toluene to CO2 coupled to humus respiration was demonstrated by use of enriched anaerobic sediments from the Amsterdam petroleum harbor (APH) and the Rhine River. Both highly purified soil humic acids (HPSHA) and the humic quinone moiety model compound anthraquinone-2,6-disulfonate (AQDS) were utilized as terminal electro
American Society for Microbiology.
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12. Stereoselective Microbial Dehalorespiration with Vicinal Dichlorinated Alkanes
The suspected carcinogen 1,2-dichloroethane (1,2-DCA) is the most abundant chlorinated C2 groundwater pollutant on earth. However, a reductive in situ detoxification technology for this compound does not exist. Although anaerobic dehalorespiring bacteria are known to catalyze several dechlorination steps in the reductive-degradation pathway of chlorinated et
American Society for Microbiology.