Effect of fermentation conditions on biohydrogen production from lipid-rich food material

Kim, Hyosun; Moon, Sooyoung; Abug, Alma Negre; Choi, Sang Chul; Zhang, Ruihong; Oh, Young-Sook

doi:10.1016/j.ijhydene.2012.07.104

Cited by 13 publications

(3 citation statements)

References 55 publications

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“…#19808) column and a thermal conductivity detector. The pressure (P) in the bioreactors was measured using a pressure sensor (SIKA D-53695, Germany) and was converted into volume using the ideal gas law corrected to standard conditions (Pan et al, 2008;Kim et al, 2012b). Initial (P at time 0 and P measurement following pressure release) and final (P measurement at the start of each sampling) volumes were multiplied with the % gas composition from GC analysis and the difference gave the volume of H 2 gas generated.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the Photoheterotrophic Hydrogen Production of <i>Rhodobacter sphaeroides</i> KCTC 1434 using Volatile Fatty Acids under Argon and Nitrogen Headspace

Ventura¹,

Ventura²,

Oh³

2016

American Journal of Environmental Sciences

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Abstract:In this study, the photo fermentative H 2 production of Rhodobacter sphaeroides KCTC 1434 was investigated using acetate, propionate and butyrate under argon and nitrogen headspace gases. The highest H 2 yield and Substrate Conversion Efficiency (SCE) were observed from butyrate (8.84 mol H 2 /mol butyrate consumed, 88.42% SCE) and propionate (6.10 mol H 2 /mol propionate consumed, 87.16% SCE) under Ar headspace. Utilization of acetate was associated with low H 2 evolution, high biomass yield and high final pH, which suggest that acetate uptake by the strain involves a biosynthetic pathway that competes with H 2 production. The use of N 2 in sparging resulted to a decreased H 2 productivity in propionate (0.49 mol H 2 /mol propionate consumed, 7.01% SCE) and butyrate (1.22 mol H 2 /mol butyrate consumed, 1.04% SCE) and was accompanied with high biomass yield and radical pH increase in all acids. High H 2 generation had shown to improve acid consumption rate. The use of the three acids in a mixed substrate resulted to a drastic pH rise and lower H 2 generation. This suggests that a more refined culture condition such as additional control of pH during fermentation must be kept to enhance the H 2 productivity. Overall, the study provided a background on the H 2 production using R. sphaeroides KCTC 1434 which might be a good co-culture candidate because of its high SCE on butyrate and propionate.

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Section: Methodsmentioning

confidence: 99%

Investigation of the Photoheterotrophic Hydrogen Production of <i>Rhodobacter sphaeroides</i> KCTC 1434 using Volatile Fatty Acids under Argon and Nitrogen Headspace

Ventura¹,

Ventura²,

Oh³

2016

American Journal of Environmental Sciences

Self Cite

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“…C4 to C18 by Syntrophomonas spp. [21]) are converted by βoxidation [17,22] by facultative and anaerobic acidogenic bacteria such as Bacteroides, Clostridium, Butyribacterium, Propionibacterium, Klebsiella, Escherichia, Syntrophomonas, and Thermoanaerobacterium to various organic acids (OAs) such as propionic or butyric acid, but mainly to acetic acid (Figure 3) [13,20,24,25]. Carbon dioxide, water, and hydrogen are also formed as waste products [13].…”

Section: Degradation Step 2: Acidogenesismentioning

confidence: 99%

Optimizability of Biogenic Hydrogen Production

Eggers,

Kirsch,

Giebner

et al. 2024

From Biomass to Biobased Products

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The biogenic hydrogen production by dark fermentative digestion of biomass shows excellent potential for solving the recent energy difficulties. To augment the efficiency of this process, the biochemical degradation needs to be understood better. The physical optimum (PhO) method was found to be particularly suitable to illustrate the maximum potential of the process. It is based on a theoretical, ideal reference state. For this purpose, the dark fermentation was modeled mathematically using Petri nets, a modeling language based on graph theory. The Petri net model was developed based on the biochemical reactions system of anaerobic digestion. All degradative steps relevant to hydrogen production were included. Then the modeled metabolic rates were analyzed to be used as a reference base in evaluating the process’s efficiency. This ideal reference state, the anaerobic digestion’s PhO, was compared with experimental data by the PhO factor. This factor summarizes the efficiency of the whole process.

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“…Without light and oxygen, microorganisms metabolize complex organic compounds into H 2 . In a highly simplified manner, the stoichiometry of anaerobic degradation can be limited to two process steps: 13,14 enzymatic saccharification; and fermentation of glucose. …”

Section: Making Potential For Improvement Visiblementioning

confidence: 99%

Improvement of substrate turnover through integrating dark fermentation into existing biogas plants

Eggers,

Giebner,

Heinemann

et al. 2024

Biofuels Bioprod Bioref

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The decarbonization potential of hydrogen offers increasing usage paths in the fight against climate change resulting in a growing demand for climate‐neutral hydrogen. This challenge is met by producing hydrogen microbially from renewable substrates as an alternative to ‘green hydrogen’ from water electrolysis. Initial results have shown that coupling dark fermentation and anaerobic digestion is not only possible but also advantageous. Specifically, by integrating dark fermentation in existing biogas plants, the overall physical efficiency of the process's substrate turnover can be increased by up to 50% through providing hydrogen in addition to biogas. The achieved test results are examined based on limit‐oriented physical efficiency evaluation to show the potential for optimization of the substrate turnover in biological concepts based on modeling. Finally an overview of a commissioned demonstration plant is given, which will provide further insights into the feasibility of the dark fermentation on an industrial scale.

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Effect of fermentation conditions on biohydrogen production from lipid-rich food material

Cited by 13 publications

References 55 publications

Investigation of the Photoheterotrophic Hydrogen Production of <i>Rhodobacter sphaeroides</i> KCTC 1434 using Volatile Fatty Acids under Argon and Nitrogen Headspace

Investigation of the Photoheterotrophic Hydrogen Production of <i>Rhodobacter sphaeroides</i> KCTC 1434 using Volatile Fatty Acids under Argon and Nitrogen Headspace

Optimizability of Biogenic Hydrogen Production

Improvement of substrate turnover through integrating dark fermentation into existing biogas plants

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