Biohydrogen Production: Fundamentals, Challenges, and Operation Strategies for Enhanced Yield

Khanal, Samir Kumar

doi:10.1002/9780813804545.ch9

Cited by 11 publications

(31 citation statements)

References 69 publications

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“…During butyric acid production, electrons are required from NADH donated by hydrogen; similarly, production of 1 mol of propionic acid requires 2 mol of hydrogen. Therefore, little hydrogen production occurs during decreasing acetic acid and increasing butyric acid and propionic acid production [4]. The below equation could present possible pathway of VFA and hydrogen production [8].…”

Section: Volatile Acid Concentration During Hydrogen Productionmentioning

confidence: 98%

“…An interesting alternative method is the use of biological processes, such as photo or dark fermentation [3]. Dark fermentation can be operated by microorganisms under anaerobic conditions without light and oxygen limits [4]. In addition, microorganisms can utilize a wide range of substrates for biohydrogen production, including various types of waste and ligninocellulosic materials [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Additional Paper Waste in Pulping Sludge for Biohydrogen Production by Heat-Shocked Sludge

Chairattanamanokorn

Tapananont

Detjaroen

et al. 2011

Appl Biochem Biotechnol

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Dark anaerobic fermentation is an interesting alternative method for producing biohydrogen (H(2)) as a renewable fuel because of its low cost and various usable organic substrates. Pulping sludge from wastewater treatment containing plentiful cellulosic substrate could be feasibly utilized for H(2) production by dark fermentation. The objective of this study was to investigate the optimal proportion of pulping sludge to paper waste, the optimal initial pH, and the optimal ratio of carbon and nitrogen (C/N) for H(2) production by anaerobic seed sludge pretreated with heat. The pulping sludge was pretreated with NaOH solution at high temperature and further hydrolyzed with crude cellulase. Pretreatment of the pulping sludge with 3% NaOH solution under autoclave at 121 °C for 2 h, hydrolysis with 5 FPU crude cellulase at 50 °C, and pH 4.8 for 24 h provided the highest reducing sugar production yield (229.68 ± 2.09 mg/g(TVS)). An initial pH of 6 and a C/N ratio of 40 were optimal conditions for H(2) production. Moreover, the supplement of paper waste in the pulping sludge enhanced the cumulative H(2) production yield. The continuous hydrogen production was further conducted in a glass reactor with nylon pieces as supporting media and the maximum hydrogen production yield was 151.70 ml/g(TVS).

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Section: Volatile Acid Concentration During Hydrogen Productionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Additional Paper Waste in Pulping Sludge for Biohydrogen Production by Heat-Shocked Sludge

Chairattanamanokorn

Tapananont

Detjaroen

et al. 2011

Appl Biochem Biotechnol

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show abstract

“…However, homoacetogens and methanogens, which are H 2 -consuming bacteria (HCB), convert H 2 into acetic acid and CH 4 respectively (Angenent et al, 2004;Deublein and Steinhauser, 2008;Dinamarca and Bakke, 2011). To promote the production of biohydrogen, hydrogenotrophic methanogenesis needs to be suppressed (Chong et al, 2009;Angenent et al, 2004;Venkata Mohan et al, 2008;Khanal, 2008a;Dinamarca and Bakke, 2011). Besides, the activities of other HCB viz.…”

Section: Introductionmentioning

confidence: 97%

“…Heavy dependence on fossil fuels for worldwide energy production has resulted in a drastic depletion as well as the increasing prices of the remaining reserves (Balat and Balat, 2009;Guo et al, 2010a;Singh and Wahid, 2015;Khanal, 2008a). Besides, the massive consumption of fossil fuels has also caused severe ecological and environmental effects namely global warming associated with the continuous release of greenhouse gases such as CO 2 (Chong et al, 2009;Singh and Wahid, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Effects of pre-treatment technologies on dark fermentative biohydrogen production: A review

Bundhoo

Mohee

Hassan

2015

Journal of Environmental Management

125

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Valorization of brewery waste slurry with glycerol as co‐substrate for hydrogen and butyrate production using dark fermentation

Garduño

Baranova

Kinsley

2023

J of Chemical Tech & Biotech

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BACKGROUND: Among the methods to produce hydrogen biologically, dark fermentation stands out mainly due to its low operating requirements. Organic wastes, such as brewing industry waste slurries and glycerol, can provide a cost-effective feedstock with the additional potential of generating value-added byproducts, while addressing a wastewater treatment issue.RESULTS: The hydrogen production potential in dark fermentation of a high-strength brewery waste slurry was optimized with a selected seed sludge, initial COD concentration of 50-60 g L −1 , pH 6.4 and fermentation time of 30 h. The main end product was butyric acid, accounting for over 50% of the carboxylic acids. The efficiency of the process on the basis of volume of H 2 obtained per gram of COD converted into organic acids was 393 ± 5 and 430 ± 6 mL without and with glycerol, respectively, and the molar ratio of H 2 per mole of substrate was 71% of the theoretical molar yield when the fermentation is dominated by butyrate as the end product.CONCLUSIONS: A proposed brewery sludge treatment system comprising dark fermentation followed by anaerobic digestion is promising and can be more advantageous than anaerobic digestion alone with an increase of 18.5% in energy potential. Alternatively, with recovery of valuable butyrate, a reduction in 4.5 kg of CO 2 emissions per cubic meter of sludge treated can be achieved, with a 27% net loss in energy potential.

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Biohydrogen Production: Fundamentals, Challenges, and Operation Strategies for Enhanced Yield

Cited by 11 publications

References 69 publications

Additional Paper Waste in Pulping Sludge for Biohydrogen Production by Heat-Shocked Sludge

Additional Paper Waste in Pulping Sludge for Biohydrogen Production by Heat-Shocked Sludge

Effects of pre-treatment technologies on dark fermentative biohydrogen production: A review

Valorization of brewery waste slurry with glycerol as co‐substrate for hydrogen and butyrate production using dark fermentation

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