Microbial Flocs
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Growth, antioxidant system, and immunological status of shrimp in bioflocs and clear water culture systems
Resumo: O objetivo deste trabalho foi avaliar o efeito do sistema de cultivo tradicional em água clara e do em bioflocos sobre os estados antioxidante e imunológico do camarão Litopenaeus vannamei. Amostras (brânquia, hemolinfa e hepatopâncreas) foram coletadas nos dias 15, 30 e 60 do período experimental. Os seguintes parâmetros imunológicos foram a
Pesq. agropec. bras.. Publicado em: 27/05/2019
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2. Influência da idade do lodo na colmatação das membranas em um biorreator à membrana tratando esgoto sanitário
RESUMO O presente estudo avaliou o efeito da idade do lodo (θc) no potencial incrustante do licor misto em um biorreator à membrana (BRM) tratando esgoto sanitário. Tal avaliação foi conduzida em BRM construído em escala de bancada, com volume útil de 15 L, operado por 420 dias na modalidade de batelada sequencial. Durante o período experimental, for
Eng. Sanit. Ambient.. Publicado em: 25/04/2019
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3. Efeitos de níveis protéicos e probiótico no desempenho do camarão marinho cultivado em meio heterotrófico.
O presente trabalho teve como objetivo avaliar o desempenho do camarão marinho Litopenaeus vannamei alimentado com dietas de diferentes níveis protéicos em sistema heterotrófico com e sem a adição de probiótico. Foi adotado um delineamento experimental inteiramente casualizado com arranjo fatorial 4×2, com quatro níveis de proteína na dieta (200, 2
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2012
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4. Tratamento com lodo aeróbio granular de efluente de fábrica de papel / Aerobic granular sludge treatment of paper mill effluents
The activated sludge process is widely used for the treatment of industrial effluents, achieving high rates of organic matter removal. Nevertheless, the separation of biological sludge in secondary clarifiers can be a serious problem of this process due to the poor floc formation, causing solids losses and, consequently, deterioration of treated effluent qua
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
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5. Berçário experimental de camarões marinhos em sistema heterotrófico com uso de probiótico
In the present study compared the growth performance of Litopenaeus vannamei and Farfantepenaeus subtilis in nursery heterotrophic system. The experimental design consisted of two treatments (L. vannamei and F. subtilis) with four replications. The cultivation was carried out during 52 days in tanks like "raceway" (0.9m2 and 300L), with initial stocking dens
Publicado em: 2010
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6. O uso da Dextrose como fonte de carbono no desenvolvimento de bio-flocos e desempenho do camarão-branco (Litopenaeus vannamei) cultivado em sistema sem renovação de água
The objective of the present study was to evaluate the effect of dextrose as carbon source in bio-flocs development, as well as, its contribution to water quality maintenance and performance of Litopenaeus vannamei juveniles reared in superintensive system without water exchange. They were used two treatments, dextrose and molasses, with four replicates each
Publicado em: 2009
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7. Influência das baixas salinidades na composição microbiana e no desempenho de Juvenis de Litopenaeus vannamei cultivados em sistema super-intensivo sem Renovação de Água
Considered environmentally friendly, due to minimal water use and effluents emission, the production systems performed without water exchange present the additional advantages of the possibility of rearing marine shrimp far from the valued coastal zone and close to consumption centers, as well as supplementation of the animals diet through their characterist
Publicado em: 2009
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8. Activated sludge morphology characterization through an image analysis procedure
This work deals with the development of a digital image analysis procedure to characterize microbial flocs obtained in three different WWTP: a bench-scale Sequencing Batch Reactor (SBR) dealing with phenol and nitrogen biological removal, a municipal treatment unit (Ilha do Governador, Rio de Janeiro, Brazil) and an industrial wastewater treatment plant (Cib
Brazilian Journal of Chemical Engineering. Publicado em: 2006-09
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9. Control of Interspecies Electron Flow during Anaerobic Digestion: Significance of Formate Transfer versus Hydrogen Transfer during Syntrophic Methanogenesis in Flocs
Microbial formate production and consumption during syntrophic conversion of ethanol or lactate to methane was examined in purified flocs and digestor contents obtained from a whey-processing digestor. Formate production by digestor contents or purified digestor flocs was dependent on CO2 and either ethanol or lactate but not H2 gas as an electron donor. Dur
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10. Fluorescent-Antibody Study of Natural Finger-Like Zooloeae
Fluorescent-antibody techniques using Zoogloea ramigera 106 antiserum were used to study fresh activated sludge flocs and finger-like zoogloeae in the microbial film that developed over stored samples of activated sludge. Few cells in fresh activated sludge reacted positively with the fluorescein-labeled antiserum. Finger-like zoogloeae containing reactive c
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11. Control of Interspecies Electron Flow during Anaerobic Digestion: Role of Floc Formation in Syntrophic Methanogenesis
The flora of an anaerobic whey-processing chemostat was separated by anaerobic sedimentation techniques into a free-living bacterial fraction and a bacterial floc fraction. The floc fraction constituted a major part (i.e., 57% total protein) of the total microbial population in the digestor, and it accounted for 87% of the total CO2-dependent methanogenic ac
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12. Microbial Ecophysiology of Whey Biomethanation: Characterization of Bacterial Trophic Populations and Prevalent Species in Continuous Culture
The organization and species composition of bacterial trophic groups associated with lactose biomethanation were investigated in a whey-processing chemostat by enumeration, isolation, and general characterization studies. The bacteria were spatially organized as free-living forms and as self-immobilized forms appearing in flocs. Three dominant bacterial trop