Biohydrogen
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. INFLUENCE OF HYDRAULIC RETENTION TIME ON HYDROGEN PRODUCTION BY TREATING CHEESE WHEY WASTEWATER IN ANAEROBIC FLUIDIZED BED BIOREACTOR - AN APPROACH FOR DEVELOPING COUNTRIES
Abstract This study assessed the effect of hydraulic retention time (HRT) on biohydrogen production by dark fermentation using an anaerobic fluidized bed reactor fed with cheese whey synthetic wastewater. The reactor of 1.2 L was operated with an approximate carbohydrate concentration of 2800 mg L-1, and HRTs of 6, 4, 2, 1 and 0.5 h. Acetic and butyric acids
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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2. Feasibility of biohydrogen production by co-digestion of vinasse (sugarcane stillage) and molasses in an AnSBBR
Abstract This work studied the feasibility of biohydrogen production by co-digestion of vinasse/molasses in an AnSBBR operated with mechanical stirring (30°C and 200 rpm). Hydrogen production by co-digestion of vinasse/sucrose was also studied to verify the performance of the process with a known co-substrate with easy degradation. The effects of influent c
Braz. J. Chem. Eng.. Publicado em: 2018-01
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3. Enhancement of biohydrogen production from starch processing wastewater and further inside its ecosystem disclosed by 16S rDNA sequencing and FISH
ABSTRACT Biohydrogen production from starch processing wastewater in this study resulted the highest yield of 61.75 mL H2/g COD at initial pH 7.0, thermophilic temperature, and iron concentration 800 mg Fe/L. The yield was 2-folded higher than the operation at mesophilic temperature or without iron addition. Cell immobilization by addition of biomaterials (B
Braz. arch. biol. technol.. Publicado em: 02/05/2017
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4. BIOHYDROGEN FROM CHEESE WHEY TREATMENT IN AN AnSBBR: ACHIEVING PROCESS STABILITY
AbstractAn AnSBBR (anaerobic sequencing batch reactor containing biomass immobilized on an inert support) with liquid phase recirculation, containing a 3.5 L working volume, treated 1.5 L of cheese whey wastewater in 3 and 4 h cycles at 30 ºC to produce biohydrogen. From startup the bioreactor presented process instability. To overcome this problem the foll
Braz. J. Chem. Eng.. Publicado em: 2015-06
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5. Immobilized Biofilm in Thermophilic Biohydrogen Production using Synthetic versus Biological Materials
Biohydrogen production was studied from the vermicelli processing wastewater using synthetic and biological materials as immobilizing substrate employing a mixed culture in a batch reactor operated at the initial pH 6.0 and thermophilic condition (55 ± 1ºC). Maximum cumulative hydrogen production (1,210 mL H2/L wastewater) was observed at 5% (v/v) addition
Braz. arch. biol. technol.. Publicado em: 2015-02
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6. AnSBBR with circulation applied to biohydrogen production treating sucrose based wastewater: effects of organic loading, influent concentration and cycle length
An anaerobic sequencing batch biofilm reactor (AnSBBR) containing immobilized biomass and operating with recirculation of the liquid phase (total liquid volume 4.5 L; treated volume per cycle 1.9 L) was used to treat sucrose-based wastewater at 30 ºC and produce biohydrogen. The influence of applied volumetric organic load was studied by varying the influen
Braz. J. Chem. Eng.. Publicado em: 2014-09
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7. Biohydrogen production from cassava wastewater in an anaerobic fluidized bed reactor
The effect of hydraulic retention time (HRT) and organic loading rate (OLR) on biological hydrogen production was assessed using an anaerobic fluidized bed reactor fed with cassava wastewater. The HRT of this reactor ranged from 8 to 1 h (28 to 161 kg COD/m³-d). The inoculum was obtained from a facultative pond sludge derived from swine wastewater treatment
Braz. J. Chem. Eng.. Publicado em: 2014-09
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8. Química Sem Fronteiras: o desafio da energia
Coal, natural gas and petroleum-based liquid fuels are still the most widely used energy sources in modern society. The current scenario contrasts with the foreseen shortage of petroleum that was spread out in the beginning of the XXI century, when the concept of "energy security" emerged as an urgent agenda to ensure a good balance between energy supply and
Quím. Nova. Publicado em: 2013
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9. Influência da carga orgânica na produção de biohidrogênio em ASBBR com agitação tratando água residuária sintética / Influence of influent concentration and feed time on biohydrogen production in an ASBBR with agitation treating sucrose based wastewater
A mechanically stirred anaerobic sequencing batch reactor containing immobilized biomass treated sucrose-based synthetic wastewater to produce biohydrogen. The system was inoculated with sludge from an anaerobic methanogenic reactor. The following have been assessed: production of biohydrogen, yield per applied and removed load, reactor stability and efficie
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2012
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10. Estudo da produção de biohidrogênio em AnSBBR com recirculação da fase líquida tratando água residuária sintética: efeito da carga orgânica / Study of hydrogen production in AnSBBR with recirculation the liquid phase treating sucrose based wastewater: organic load effect
Um reator anaeróbio com biomassa imobilizada operado em bateladas sequenciais com recirculação da fase liquida (AnSBBR) foi aplicado à produção de biohidrogênio. Foram tratados 1.9 L de meio por ciclo, analisando a influência da variação da carga orgânica volumétrica (COAV) através da variação da concentração do afluente sintético a base de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2012
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11. Bioconversion of glycerol for bioethanol production using isolated Escherichia coli SS1
Bioconverting glycerol into various valuable products is one of glycerol's promising applications due to its high availability at low cost and the existence of many glycerol-utilizing microorganisms. Bioethanol and biohydrogen, which are types of renewable fuels, are two examples of bioconverted products. The objectives of this study were to evaluate ethanol
Brazilian Journal of Microbiology. Publicado em: 2012-06
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12. Influência da razão de recirculação na produção de hidrogênio em reator anaeróbio de leito fixo / Influence of recirculation rate in biohydrogen production in an anaerobic upflow fixed-bed reactor
A presente pesquisa avaliou diferentes razões de recirculação do meio líquido com a finalidade de identificar a melhor condição de mistura para uma produção elevada e contínua de hidrogênio em um reator anaeróbio de leito fixo com fluxo ascendente alimentado com um meio contendo sacarose como fonte de carbono e uréia como fonte de nitrogênio. Fo
Publicado em: 2011