Membrane Bioreactor
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Tratamento termofílico de efluentes de máquina de papel utilizando biorreator a membranas / Thermophilic treatment of paper machine effluent in a membrane bioreactor
Fábricas de papel consomem elevadas quantidades de água nos seus processos industriais gerando, conseqüentemente, grande volume de efluentes. Aumentar o reuso de água é uma forma que as empresas encontram para reduzir o consumo de água nas fábricas de papel. A reutilização da água nem sempre é possível devido a sua qualidade, o que requer um trat
Publicado em: 2008
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14. Tratamento de efluentes domésticos por sistemas integrados de lodos ativados e membranas de ultrafiltração visando o reúso de água. / Domestic wastewater treatment for integrated systems of activated sludge and ultrafiltration membranes aiming at the water reuse.
No presente trabalho foram estudados sistemas pilotos de tratamento integrado de lodos ativados com sistemas de separação por membranas de ultrafiltração visando o reúso de água. O esgoto bruto utilizado foi originado do Conjunto Residencial associado ao esgoto do restaurante universitário da Universidade de São Paulo. Este esgoto possui característ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2007
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15. Tratamento anaeróbio de efluentes de máquina de papel por biorreator convencional e biorreator de membranas / Anaerobic treatment of paper machine effluents by conventional bioreactor and membrane bioreactor
Fresh water use in paper mills varies according to the type of paper produced, but it can be as high as 100 m3 per ton of paper. In order to reduce water use in paper mills, the reclamation of whitewater is an attractive option. However, it is not always possible to completely recover the whitewater in a closed-cycle manner due to the poor quality of this st
Publicado em: 2007
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16. Cinética do cultivo em biorreator de Niesseria meningitidis sorogrupo B / Bioreactor cultivation kinetics of group B Neisseria meningitidis
Neisseria meningitidis B libera vesículas de membrana externa, conhecidas pela sigla OMV. Essas possuem os mesmos componentes da membrana externa da bactéria e podem ser utilizadas como antígenos em vacinas contra a meningite B. As vesículas devem, também, expressar proteínas da membrana externa (OMP) e proteínas reguladoras do íon ferro (IRP). O obj
Publicado em: 2007
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17. Study of breathing activity of wild and transfected line of insect cells through cultivations in bioreactors. / Estudo da atividade respiratória de linhagens selvagens e transfectadas de células de insetos através de cultivos em biorreatores.
Specific respiration rate (QO2) is a key parameter to understand cell metabolism and physiological state, providing useful information for process supervision and control. In this work, we cultivated different insect cells in a very controlled environment, being able to measure QO2 and critical oxygen concentration (Ccrit). Wild Spodoptera frugiperda (Sf9) a
Publicado em: 2007
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18. Study of the effect of alkaline "stress" in production xanthan gum / Estudo do efeito do "stress" alcalino na produção de goma xantana.
The present study had as objective to make a selection of strains of X. campestris for the production of xanthan gum and to verify the effect of the process of alkaline "stress" at different conditions of production of this biopolymer, through the evaluation of the gum production and of the apparent viscosity, which is a factor of high relevance, in order to
Publicado em: 2007
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19. Incorporation of the concept of microbial product formation into ASM3 and the modeling of a membrane bioreactor for wastewater treatment
This paper proposes a modification of ASM3 in a way that takes into account the process of production and consumption of microbial products (MPs) in a submerged membrane bioreactor fed with the effluent of a particular precoagulation sedimentation unit. A comparative representation of the modeling results obtained with ASM3 and ASM1 is performed and it highl
Brazilian Journal of Chemical Engineering. Publicado em: 2006-12
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20. Optimizing the operational conditions of a membrane bioreactor used for domestic wastewater treatment
Biorreatores com membrana para retenção de sólidos consistem em processos biológicos acoplados a módulos de membranas de microfiltração ou ultrafiltração. O presente estudo avaliou o desempenho de um módulo de membranas, combinado a um sistema de aeração, para o tratamento de esgoto doméstico. Com o objetivo de investigar o comportamento das mem
Brazilian Archives of Biology and Technology. Publicado em: 2005-06
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21. Sintese biocatalitica de beta -amino- alfa -hidroxiacidos : aplicações na sintese de heterociclos quirais / Sintese biocatalitica de B-amino-a-hidroxiacidos : aplicações na sintese de heterociclos quirais
Homochiral b-amino-a-hydroxy acids are key components of many compounds with important pharmacological activities. In this work, we have performed a synthetic study in order to develop a general methodology to synthesize these compounds. We have specially investigated the bioreductions of a-ketoesters (with an a-carbonyl R group that could lead to nitrogened
Publicado em: 2005
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22. Production of inulinase: recovery and scale-up / Obtenção de inulinase: recuperação e ampliação de escala
It has been observed that the production of extracellular inulinase by Candida kefyr DSM 70106 was markedly affected by the rate of oxygen transfer to the medium. The highest inulinase activity (37,5 U.Ml-1) was attained at a KLa value (volumetric coefficient of oxygen transfer) equal to 43 h-1. As such, KLa was chosen as a criterion for scaling-up the biore
Publicado em: 1995
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23. Biofilm-Specific Cross-Species Induction of Antimicrobial Compounds in Bacilli
An air-membrane surface (AMS) bioreactor was designed to allow bacteria to grow attached to a surface as a biofilm in contact with air. When Bacillus licheniformis strain EI-34-6, isolated from the surface of a marine alga, was grown in this reactor, cells produced antimicrobial compounds which they did not produce when they were grown in shake flask culture
American Society for Microbiology.
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24. Bacterial Population Changes in a Membrane Bioreactor for Graywater Treatment Monitored by Denaturing Gradient Gel Electrophoretic Analysis of 16S rRNA Gene Fragments
The bacterial population of a graywater treatment system was monitored over the course of 100 days, along with several wastewater biochemical parameters. The graywater treatment system employed an 1,800-liter membrane bioreactor (MBR) to process the waste, with essentially 100% recycling of the biomass. Graywater feed consisting of 10% galley water and 90% l
American Society for Microbiology.