Biohydrogen production in anaerobic fluidized bed reactors: Effect of support material and hydraulic retention time

Barros, Aruana Rocha; Amorim, Eduardo Lucena Cavalcante de; Reis, Cristiane Marques dos; Shida, Géssia Momoe; Silva, Edson Luiz

doi:10.1016/j.ijhydene.2010.01.108

Cited by 101 publications

(55 citation statements)

References 53 publications

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“…As in other studies Reis and Silva, 2011;Shida et al, 2009;Barros et al, 2010), this study showed an increase in HPR from 0.20 to 2.04 L/h/L when the HRT was reduced from 8 h to 1 h by increasing the OLR from 28 kg COD/m 3 -d to 161 kg COD/m 3 -d, respectively. The HY also behaved in the same way as in previous studies, in that it was observed to increase when the HRT was reduced from 8 h (0.31 mol H 2 /mol glucose) to 2 h (1.91 mol H 2 /mol glucose) or when the OLR was increased from 28 kg COD/m 3 -d to 126 kg COD/m 3 -d. A decrease in the HY was subsequently observed when the HRT was reduced to 1 h (1.20 mol H 2 /mol glucose).…”

Section: Figuresupporting

confidence: 87%

“…As in other studies Reis and Silva, 2011;Shida et al, 2009;Barros et al, 2010), this study showed that the H 2 content increased significantly from 8% to 48% when the HRT was decreased from 8 to 2 h. After decreasing the HRT from 2 h to 1 h, the H 2 content decreased to 30%. No methane was found in the biogas.…”

Section: Figuresupporting

confidence: 87%

“…The HY also behaved in the same way as in previous studies, in that it was observed to increase when the HRT was reduced from 8 h (0.31 mol H 2 /mol glucose) to 2 h (1.91 mol H 2 /mol glucose) or when the OLR was increased from 28 kg COD/m 3 -d to 126 kg COD/m 3 -d. A decrease in the HY was subsequently observed when the HRT was reduced to 1 h (1.20 mol H 2 /mol glucose). This finding was also observed in previous studies employing an AFBR Reis and Silva, 2011;Shida et al, 2009;Barros et al, 2010), and such behavior may be attributed to overloads caused by a high OLR (161 kg COD/m 3 -d) or kinetic limitations . Shida et al (2009) found that reducing the HRT from 8 h to 1 h resulted in an increase in HPR, which reached its highest value (1.28 L/h/L) at an HRT of 1 h. The HY increased when the HRT was reduced from 8 h to 2 h, i.e., from 1.84 mol H 2 /mol glucose to 2.29 mol H 2 /mol glucose, respectively.…”

Section: Figuresupporting

confidence: 87%

“…Additionally, the HY increased from 1.41 mol H 2 /mol glucose to 2.49 mol H 2 /mol glucose when the HRT was reduced from 8 h to 2 h (the OLR from 15.7 kg COD/m³-d to 66.5 kg COD/m³-d) and decreased to 2.41 mol H 2 /mol glucose when the HRT was reduced to 1 h (116.6 kg COD/m³-d). Barros et al (2010) observed the same behavior when using expanded clay as the support material in an AFBR. The HY values ranged from 1.51 mol H 2 /mol glucose to 2.59 mol H 2 /mol glucose when the HRT varied between 8 h and 2 h and decreased when the HRT was reduced to 1 h (1.84 mol H 2 /mol glucose).…”

Section: Figuresupporting

confidence: 54%

“…Hydrogen production in an AFBR has been studied by some researchers, who were successful in evaluating this reactor's usefulness Reis and Silva, 2011;Shida et al, 2009;Barros et al, 2010). However, the production of bio-hydrogen from actual substrate, such as cassava wastewater, in an AFBR has not yet been evaluated.…”

Section: Introductionmentioning

confidence: 99%

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Biohydrogen production from cassava wastewater in an anaerobic fluidized bed reactor

Amorim

Alves

Martins

et al. 2014

Braz. J. Chem. Eng.

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-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/m 3 -d). The inoculum was obtained from a facultative pond sludge derived from swine wastewater treatment. The effluent pH was approximately 5.00, while the influent chemical oxygen demand (COD) measured 4000 mg COD/L. The hydrogen yield production increased from 0.13 to 1.91 mol H 2 /mol glucose as the HRT decreased from 8 to 2 h. The hydrogen production rate significantly increased from 0.20 to 2.04 L/h/L when the HRT decreased from 8 to 1 h. The main soluble metabolites were ethanol (1.87-100%), acetic acid (0.00-84.80%), butyric acid (0.00-66.78%) and propionic acid (0.00-50.14%). Overall, we conclude that the best hydrogen yield production was obtained at an HRT of 2 h.

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Section: Figuresupporting

confidence: 87%

Section: Figuresupporting

confidence: 87%

Section: Figuresupporting

confidence: 87%

Section: Figuresupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Biohydrogen production from cassava wastewater in an anaerobic fluidized bed reactor

Amorim

Alves

Martins

et al. 2014

Braz. J. Chem. Eng.

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Continuous hydrogen production by dark fermentation in a foam SiC ceramic packed up‐flow anaerobic sludge blanket reactor

Dong

Mou-cheng

et al. 2016

Can J Chem Eng

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Biohydrogen generation using anaerobic sludge from a sewage treatment plant is a promising strategy for converting waste into renewable energy. The porous foam SiC ceramic structured packing was used as a support in the up‐flow anaerobic sludge blanket (UASB) reactor to enhance the biohydrogen yield. Using glucose as the major carbon source, the SiC‐UASB reactor was continuously operated under the organic loading rates (OLR) between 30 and 90 gglucose/L · d at a hydraulic retention time (HRT) of 4 h. The maximum hydrogen production rate (5.24 L/L · d) and hydrogen content (50 %) were obtained at 60 gglucose/L · d OLR. It demonstrated that the reaction of fermentation was predominated by the butyric acid pathway. The employment of SiC packings resulted in quick startup (∼5 days) and high efficiency of hydrogen production. The buffering capacity and the cell culture immobilization ability of the UASB reactor were obviously improved by the application of SiC packings, which increased the feasibility of scale‐up of the continuous biohydrogen production system.

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Optimization of hydrogen production from pretreated rice straw waste in a mesophilic up-flow anaerobic staged reactor

Tawfik

Salem

2013

Int. J. Energy Res.

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SUMMARYThis study was carried out to assess the efficiency of a mesophilic up‐flow anaerobic staged reactor for continuous H2 production from pretreated rice straw waste. The reactor was operated at different hydraulic retention times (HRTs) of 20, 16, 12, 8 and 4 h. The organic loading rate and sludge residence time were kept constant at 30 g chemical oxygen demand (COD)/L/day, and 1.9 days, respectively. The results showed that increasing the HRT from 4 to 20 h increased the H2 production from 0.4 ± 0.1 to 3.6 ± 0.3 L H2/day, respectively. This corresponds to a H2 yield of 2.1 ± 0.2 mol H2/g CODremoved at an HRT of 20 h and 0.03 ± 0.002 mol H2/g CODremoved at an HRT of 4 h. Likewise, carbohydrate and COD removal efficiency was strongly dependant on HRT. The removal efficiency decreased from 76.5 ± 3.4% to 40 ± 2.2% for carbohydrate and from 77.7 ± 4.3% to 12.2 ± 2.1% for COD when the HRT is reduced from 20 to 4 h, respectively.The addition of presettled sewage sludge to pretreated rice straw at a mixing ratio of 1:4 (v/v) increased the volumetric H2 production from 3.6 ± 0.3 to 8.2 ± 2.5 L/day and the H2 yield from 2.1 ± 0.2 to 2.8 ± 0.3 mol H2/g CODremoved. Moreover, the removal efficiency of COD, volatile solids and carbohydrate was significantly improved. Copyright © 2013 John Wiley & Sons, Ltd.

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Biohydrogen production in anaerobic fluidized bed reactors: Effect of support material and hydraulic retention time

Cited by 101 publications

References 53 publications

Biohydrogen production from cassava wastewater in an anaerobic fluidized bed reactor

Biohydrogen production from cassava wastewater in an anaerobic fluidized bed reactor

Continuous hydrogen production by dark fermentation in a foam SiC ceramic packed up‐flow anaerobic sludge blanket reactor

Optimization of hydrogen production from pretreated rice straw waste in a mesophilic up-flow anaerobic staged reactor

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