Long-term stability of hydrogen and organic acids production in an anaerobic fluidized-bed reactor using heat treated anaerobic sludge inoculum

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

doi:10.1016/j.ijhydene.2009.02.076

Cited by 59 publications

(59 citation statements)

References 43 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%

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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%

“…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%

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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“…In fact, beyond steady-state operational parameters and medium composition, stable and continuous bioreactor operation to obtain acceptable hydrogen production performance is strongly dependent on the start-up phase [16]. It could involve the following steps:…”

Section: The Role Of Start-up In the Efficacy Of Continuous Hydrogen mentioning

confidence: 99%

“…Moreover, beyond the goal of activating H 2 -producer organisms [16,34,35], preliminary cultivation -mostly in batch -may also serve as a tool to acclimatize the microflora to certain substrates and their loadings e.g. to overcome inhibitory effect [36], which will induce a dynamic competition between the various groups of bacteria.…”

Section: Pretreatment and Stimulationmentioning

confidence: 99%

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Review on the start-up experiences of continuous fermentative hydrogen producing bioreactors

Bakonyi

Nemestóthy

Simon

et al. 2014

Renewable and Sustainable Energy Reviews

113

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a b s t r a c tThe start-up of continuous biohydrogen fermentations is a complex procedure and a key to acceptable hydrogen production performance and successful long-term operation. In this review article, the experiences gained and lessons learned from relevant literature studies dealing with various aspects of H 2 producing bioreactor start-up are comprehensively surveyed. Firstly, the importance of H 2 -forming biosystem start-up including its main steps is outlined. Afterwards, the role of main influencing factors and methods (e.g. strain selection, seed pretreatment and inocula stimulation, switch-over time, bioreactor design, operating conditions) in avoiding the deterioration of starting a reactor is analyzed and presented in detail. Finally, the so far suggested applicable start-up strategies and the corresponding findings are critically discussed pointing out the advantages and disadvantages of each strategy.

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Elements of Sustainability and Bioremediation

Mudhoo

Mohee

2012

Bioremediation and Sustainability

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Long-term stability of hydrogen and organic acids production in an anaerobic fluidized-bed reactor using heat treated anaerobic sludge inoculum

Cited by 59 publications

References 43 publications

Biohydrogen production from cassava wastewater in an anaerobic fluidized bed reactor

Biohydrogen production from cassava wastewater in an anaerobic fluidized bed reactor

Review on the start-up experiences of continuous fermentative hydrogen producing bioreactors

Elements of Sustainability and Bioremediation

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