Filter Bed
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. ESTIMATION OF PARAMETERS AND STATES USING A BAYESIAN PARTICLE FILTER FOR THE SULFATE ION ADSORPTION PROCESS IN A FIXED BED COLUMN
Abstract Ensuring that industrial effluents meet quality standards to be released into water bodies is still one of the major environmental concerns. Liquid phase adsoption in fixed bed collumns is one of the most known treatments. Measurements are needed to monitor the process. However, as they are often corrupted by noise from the measuring equipment, perf
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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2. Interpretation software applied to the evaluation of shallow seismic data processing routines in fluvial deposits
Abstract High-resolution seismic surveys have been successfully applied in the study of active sedimentary environments in shallow submerged settings, particularly improving the interpretation of sedimentary facies and architectural elements that characterize fluvial rock records. Nevertheless, specific data processing workflows to emphasize sedimentary stru
Braz. J. Geol.. Publicado em: 29/04/2019
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3. Desenvolvimento de um sistema de recirculação com uso de wetlands construídas para efluentes da piscicultura / Development of a recirculating system using constructed wetlands for aquaculture effluents
Global aquaculture has been growing very fast in recent decades due to several factors, including: population growth, demand for low calorie protein and especially the reduction of natural fish stocks. Brazil has enormous potential to become a world leader in fisheries production in captivity. However, the development of aquaculture in Brazil must be conduct
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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4. Endoglucanase production with the newly isolated Myceliophtora sp. i-1d3b in a packed bed solid state fermentor
This work is aimed to produce endoglucanase through solid state fermentation in a packed bed bioreactor with the use of the fungus Myceliophtora sp. I-1D3busing a mixture of wheat bran (WB) and sugar cane bagasse (SCB) as culture medium. Preliminary tests were performed in polypropylene plastic bags, controlling the variables temperature (40, 45, and 50ºC),
Braz. J. Microbiol.. Publicado em: 2012-12
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5. A performance study of simultaneous microbial removal of no and SO2 in a biotrickling-filter under anaerobic condition
The behaviors of simultaneous removal of NO and SO2 using the coculture of anaerobic denitrifying bacteria and sulfate reducing bacteria was investigated in a bench-scale biotrickling-filter. When the combined NO/SO2 removal biotrickling-filter was operated at an empty bed residence time of 76 s with NO and SO2 feed concentrations of 2 and 2 g/m3, respective
Brazilian Journal of Chemical Engineering. Publicado em: 2011-06
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6. Modelling the steady state and dynamic conditions of a biotrickling filter treating styrene and acetone in air
The aim of this work was the study a trickling biofilter, where water was circulated throughout the bed. In the first steady state experiment, the packing materials used were 25mm Pall rings. The airflow rate was increased gradually and the concentration of styrene in the air stream was held constant. In the second experiment, 15mm Pall rings were used. In t
Brazilian Archives of Biology and Technology. Publicado em: 2010-10
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7. Desenvolvimento e estudo físico-químico de compósitos de nanotubos de carbono / Physical chemical study and development of carbon nanotubes composites
This thesis presents for the first time nitrogen-cup-stacked carbon nanotubes with hydrophilic and semiconducting properties synthesized by alcohol precursor. The hybrid carbon fiber/carbon nanotubes composite have three-dimensional geometry and nanostructure. The material was prepared via fixed-bed chemical vapor deposition reactor. In this process nitrogen
Publicado em: 2010
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8. Comportamento de filtros rápidos de camada profunda no tratamento de águas de abastecimento mediante o emprego de polímeros como auxiliares de filtração. / Behavior of deep bed rapid filters treating public water supplies through the use of polymers as filter aids.
The project was to evaluate the use of anionic and cationic polymers of different molecular weights as filter aids to treat drinking water treatment of surface water sources with high degree of eutrophication, particularly with regard to particulate matter removal optimization and head loss rate minimization. The experimental apparatus was composed of four p
Publicado em: 2009
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9. Avaliação do tipo de material filtrante no comportamento hidráulico de filtros rápidos de camada profunda no tratamento de águas de abastecimento. / Evaluation of filter media in the hydraulic behaviour of rapid gravity depth bed filters used in drinking water treatment.
This project researched the filtration stage in the water treatment process for public use. The research used a pilot filtration system based on four rapid gravity depth bed filters, with a filtration rate of 500m3/m2/dia. The water used in the experiment came from sedimentation tank of the Rio Grande water treatment facility. During the experimental phase t
Publicado em: 2009
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10. Remoção de compostos orgânicos causadores de gosto e odor em águas de abastecimento em sistemas pós-filtros adsorvedores de carvão ativado granular. / Removal of taste and odor producing organic substances in water supply in post-filter granular activated carbon adsorber systems.
The main purpose of this research was to study the performance of granular activated carbon post filter adsorbers made of bituminous coal and vegetal coal (coconut), regarding, mainly, removal of 2-methylisoborneol and trans-1,10-dimethyltrans- 9-decalol. The experimental researches were conducted in the water treatment plant Alto da Boa Vista, using four pi
Publicado em: 2009
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11. Styrene biofiltration in a trickle-bed reactor
The biological treatment of styrene waste gas in a trickle-bed filter (TBF) was investigated. The bioreactor consisted of a two-part glass cylinder (ID 150 mm) filled with 25 mm polypropylene Pall rings serving as packing material. The bed height was 1m. Although the laboratory temperature was maintained at 22 ºC, the water temperature in the trickle-bed fi
Brazilian Archives of Biology and Technology. Publicado em: 2008-04
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12. Post-treatment of effluents from anaerobic reactor treating domestic sewage by flotation/filtration pilot system with cationic synthetic polymers / Emprego de polímeros em unidade piloto de floto-filtração como pós-tratamento de efluentes de reatores anaeróbios de leito expansível tratando esgoto sanitário
This work assessed the performance of domestic sewage treatment pilot unit consisting of anaerobic reactor followed dissolved-air flotation/filtration (DAFF). Associated ferric chloride was used polyelectrolytes. First, was tested in lab-scale dissolved-air flotation (LSDAF), low dosages of cationic synthetic polymer with high molecular weight as aiding of f
Publicado em: 2008