Degradation Anaerobic
Mostrando 25-36 de 415 artigos, teses e dissertações.
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25. Kinetic modeling and microbial assessment by fluorescent in situ hybridization in anaerobic sequencing batch biofilm reactors treating sulfate-rich wastewater
This paper reports the results of applying anaerobic sequencing batch biofilm reactors (AnSBBR) for treating sulfate-rich wastewater. The reactor was filled with polyurethane foam matrices or with eucalyptus charcoal, used as the support for biomass attachment. Synthetic wastewater was prepared with two ratios between chemical oxygen demand (COD) and sulfate
Brazilian Journal of Chemical Engineering. Publicado em: 2011-06
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26. Caracterização microbiana e remoção do alquilbenzeno linear sulfonado em reator EGSB / Microbial characterization and removal of linear alkylbenzene sulfonate in EGSB reactor
O presente trabalho teve por objetivo avaliar a eficiência de remoção do surfactante aniônico alquilbenzeno linear sulfonado (LAS) em reator anaeróbio de leito granular expandido - EGSB (1,5 litros) com recirculação e alimentação com meio mineral. Além de caracterizar filogeneticamente a diversidade de bactérias na presença do surfactante. O sist
Publicado em: 2011
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27. Anaerobic degradation of linear alkylbenzene sulfonate in fluidized bed reactor
An anaerobic fluidized bed reactor was used to assess the degradation of the surfactant linear alkylbenzene sulfonate (LAS). The reactor was inoculated with sludge from an UASB reactor treating swine wastewater and was fed with a synthetic substrate supplemented with LAS. Sand was used as support material for biomass immobilization. The reactor was kept in a
Brazilian Journal of Chemical Engineering. Publicado em: 2010-12
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28. Peptidolytic microbial community of methanogenic reactors from two modified UASBs of brewery industries
We studied the peptide-degrading anaerobic communities of methanogenic reactors from two mesophilic full-scale modified upflow anaerobic sludge blanket (UASB) reactors treating brewery wastewater in Colombia. Most probable number (MPN) counts varied between 7.1 x 10(8) and 6.6 x 10(9) bacteria/g volatile suspended solids VSS (Methanogenic Reactor 1) and 7.2
Brazilian Journal of Microbiology. Publicado em: 2010-10
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29. Remoção de alquilbenzeno linear sulfonado (LAS) e caracterização microbiana em reator anaeróbio de leito fluidificado / Removal of linear alkylbenzene sulfonate (LAS) and microbial characterization in anaerobic fluidized bed reactor
Nesse trabalho foi estudado a degradação anaeróbia do alquilbenzeno linear sulfonado (LAS), um surfactante amplamente utilizado na fabricação de detergentes e presente em esgoto doméstico e águas residuárias industriais. Para isso foi utilizado reator anaeróbio de leito fluidificado em escala de bancada (1,2 L) preenchido com material suporte para i
Publicado em: 2010
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30. Experimental and theoretical investigation of anaerobic fluidized bed biofilm reactors
This work presents an experimental and theoretical investigation of anaerobic fluidized bed reactors (AFBRs). The bioreactors are modeled as dynamic three-phase systems. Biochemical transformations are assumed to occur only in the fluidized bed zone. The biofilm process model is coupled to the system hydrodynamic model through the biofilm detachment rate; wh
Brazilian Journal of Chemical Engineering. Publicado em: 2009-09
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31. Aerobic and anaerobic biodegradation of petroleum from Pampo Sul Field, Campos Basin, RJ, Brazil / Biodegradação aerobia e anaerobia de petroleo do Campo Pampo Sul, Bacia de Campos, RJ
The main purpose of this thesis was the simulation of petroleum biodegradation processes under reservoir aerobic, anaerobic or mixed conditions. The biodegradation experiments were first adapted to the laboratory scale in order to simulate different reservoir conditions taking care to select the best parameters to accelerate million times the biodegradation
Publicado em: 2009
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32. AvaliaÃÃo do processo de bioestabilizaÃÃo de resÃduos sÃlidos urbanos em LisÃmetro de campo
The solid wastes, formed at the most part of it by organic materials, bear biological degradation associated by others physical and chemical processes. These residues, deposited in landfill, are treated through anaerobic degradation; which engender, as a final result of the decomposition, leaching and bio-gas. However, these sub products can be studied and t
Publicado em: 2009
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33. Avaliação da co-disposição do lodo de tanques sépticos e fração orgânica de resíduos sólidos domiciliares em reatores anaeróbios / Evaluation of co-disposal of sludge from septic tanks and organic fraction of domestic solid waste in anaerobic reactors
Despite being an emerging country, unfortunately the sanitary situation of Brazil is quite precarious. Only 52.2% of the 5,507 brazilian municipalities have some type of sanitary service (IBGE, 2000). In this alarming scenario, individual solutions are gaining more importance. The adoption of septic tanks as an alternative to the solution of the sewage becom
Publicado em: 2009
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34. Avaliação de diferentes inóculos na digestão anaeróbia da fração orgânica de resíduos sólidos domésticos
The process of anaerobic digestion of organic solid wastes can be optimized and accelerated by using methods that contribute to achieve a rapid and balanced start-up, such as the use of appropriate inocula. In this context, the present study aimed to analyze the potential application of bovine manure, pig manure and bovine rumen as inocula for the anaerobic
Publicado em: 2009
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35. Aerobic biofilms for nitrogen removal in flow cells, submitted to different superficial velocities and loading rates / Biofilmes aeróbios para remoção de nitrogênio em células de fluxo, submetidos a diferentes velocidades superficiais e taxas de carregamento
The post-treatment of anaerobic reactor effluents, such as the Upflow Anaerobic Sludge Blanket (UASB), in most applications, is necessary, since this kind of biological treatment promotes BOD removal ranging from 60 to 75% and it has low efficiency in nitrogen and phosphorous removal. Nitrogen removal is usually carried out in a conventional way through nitr
Publicado em: 2009
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36. Characterization and treatment of sludge originated from septic tanks / Caracterização e pré-tratamento de lodo de fossas e de tanques sépticos
Septic tanks are small structures used for partial treatment of wastewater produced from urban and rural areas. It utilization is justify mainly by simplicity of construction and for being a technology that requires low operational dedication. Although it is a technology vastly used in Brazil, there is not much information about the characteristics of the wa
Publicado em: 2009