Photofermentative hydrogen production from volatile fatty acids present in dark fermentation effluents

Uyar, Başar; Eroğlu, İnci; Yücel, Meral; Gündüz, Ufuk

doi:10.1016/j.ijhydene.2008.07.057

Cited by 124 publications

(53 citation statements)

References 25 publications

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“…Similar to the method of Uyar et al (2009), the VFA concentrations chosen were proportional to the number of carbon in each organic acid.…”

Section: H 2 Production and Kinetic Profile From Individual Acids Usimentioning

confidence: 99%

“…Although a wide range of studies on carbon utilization for H 2 production in PNSB is available, discrepancies exist even for different strains of R. sphaeroides. For instance, most studies reported highest H 2 production in acetate, followed by propionate, then butyrate (Uyar et al, 2009;Lo et al, 2011;Han et al, 2012). Using individual acid substrate, Uyar et al (2009) (Tao et al, 2008;Lo et al, 2011).…”

Section: The H 2 Production Of R Sphaeroides Kctc 1434 From Individumentioning

confidence: 99%

“…The ability of these bacteria to photoheterotrophically convert organic acids into H 2 and CO 2 has made PNSB popular in wastewater remediation and alternative energy generation (Fang et al, 2005;Argun et al, 2008;Uyar et al, 2009;Amrouche et al, 2011;Han et al, 2012). Organic acids such as Volatile Fatty Acids (VFAs) produced during the acidogenic phase of anaerobic digestion of organic wastes can be further converted to CO 2 and H 2 (Kapdan and Kargi, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Unlike other fermentation studies where a less costly N 2 gas is employed, photo-fermentation commonly uses argon because N 2 is the natural substrate for nitrogen fixation (Tao et al, 2008;Uyar et al, 2009;Kim et al, 2011;2012a;Han et al, 2012;Pandey et al, 2012). When dimolecular nitrogen (N 2 ) is present, fixation dominates (Koku et al, 2002) and H 2 production becomes minimal (Sasikala et al, 1990;Liu et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…In this study, three VFAs (acetate, propionate and butyrate) that are identified to be the main fermentation products in dark fermentation liquor (Uyar et al, 2009) were chosen and H 2 production under blue Light Emitting Diode (LED) and two different headspace gases, N 2 and Ar, was investigated. The blue LED was selected because it was observed that R. sphaeroides KCTC 1434 illuminated with blue light exhibited the highest growth rate and cell concentration .…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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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“…Similar to the method of Uyar et al (2009), the VFA concentrations chosen were proportional to the number of carbon in each organic acid.…”

Section: H 2 Production and Kinetic Profile From Individual Acids Usimentioning

confidence: 99%

Section: The H 2 Production Of R Sphaeroides Kctc 1434 From Individumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Bioprospecting of Microbes for Biohydrogen Production: Current Status and Future Challenges

Kumar

Sharma

Thakur

et al. 2019

Bioprocessing for Biomolecules Production

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Photofermentative biohydrogen generation from organic acids by Rhodobacter sphaeroides O.U.001: Computational fluid dynamics modeling of hydrodynamics and temperature

Basak

Jana

Das

2021

Biotech and App Biochem

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Hydrogen gas is a clean-burning fuel suitable for powering public vehicles. Hydrogen fuel has the highest energy density (143 MJ kg −1 ). This research paper emphasizes three-dimensional hydrodynamics and temperature distribution during photobiohydrogen generation by Rhodobacter sphaeroides strain O.U.001 in a triple-jacketed 1 L photobioreactor (PBR). The fermentation broth has turbulent flow conditions and light gradients among various layers, which affect the light conversion efficiency of the PBR. From the carbon source (malic acid), various organic acids are produced within fermentation (lactate, acetate, and formate). Modeling and simulation studies by computational fluid dynamics confirmed uniform fluid dynamics and heat transfer throughout the annular PBR. The modified Gompertz equation gave good simulated fitting with an experimental value for H 2 generation. R. sphaeroides O.U. 001 gave good simulated results for H 2 generation with mathematical modeling of substrate consumption kinetics and substrate utilization for biomass. K E Y W O R D Scomputational fluid dynamics simulation of hydrodynamics, kinetics of H 2 generation, optimization of photosynthetic H 2 formation, particle tracing, Rhodobacter sphaeroides O.U.001Abbreviations: CCD, central composite design; CFD, computational fluid dynamics; LH-I, light harvesting-I antenna complex; PBR, photobioreactor; PNS, purple nonsulfur; RC, reaction center; S/V, ratio of surface area and volume; VFAs, volatile fatty acids; dX/dt, rate of change of cell dry mass concentration, (g L −1 h −1 ); n, order of reaction; r, extent of the fit; R 2 , coefficient of determination value; R H2 , rate of H 2 generation, (mL H 2 /L/h); t, time (h); W, Watt; X, cell dry mass concentration, (g L −1 ); Y H2 , Yield of H 2 generation, (mol H 2 /mol substrate); ∆G 0 ′ , Gibb's free energy (kJ mol −1 ); λ, lag time obtained from modified Gompertz model (h); μ, specific growth rate (h −1 )

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Photofermentative hydrogen production from volatile fatty acids present in dark fermentation effluents

Cited by 124 publications

References 25 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

Bioprospecting of Microbes for Biohydrogen Production: Current Status and Future Challenges

Photofermentative biohydrogen generation from organic acids by Rhodobacter sphaeroides O.U.001: Computational fluid dynamics modeling of hydrodynamics and temperature

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