Continuous hydrogen production from molasses by fermentation using urethane foam as a support of flocks

Tanisho, Shigeharu; Ishiwata, Yoshihisa

doi:10.1016/0360-3199(94)00101-5

Cited by 117 publications

(53 citation statements)

References 4 publications

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“…Therefore, maintaining high cell retention during high-rate operations seems to be the key for success of highly stable and efficient fermentative H 2 production Das and Verziroglu, 2001;Kumar and Das, 2001;Yu et al, 2001). Consequently, immobilized cells (IMC) created by natural or synthetic matrices (Bagai and Madamwar, 1998;Kumar and Das, 2001;Palazzi et al, 2000;Tanisho and Ishiwata, 1995;Zhu et al, 1999) were often used to allow better retention of H 2 -producing bacterial cells for stable operations at higher dilution rates. An alternative way to enhance cell retention was to enable formation of self-flocculated granular cells or sludge (Chang and Lin, 2004;Fang et al, 2002;Lee et al, 2003Lee et al, , 2004aRachman et al, 1998;Yokoi et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Fermentative hydrogen production and bacterial community structure in high‐rate anaerobic bioreactors containing silicone‐immobilized and self‐flocculated sludge

Hung

Lin

et al. 2005

Biotech & Bioengineering

251

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A novel continuously stirred anaerobic bioreactor (CSABR) seeded with silicone-immobilized sludge was developed for high-rate fermentative H2 production using sucrose as the limiting substrate. The CSABR system was operated at a hydraulic retention time (HRT) of 0.5-6 h and an influent sucrose concentration of 10-40 g COD/L. With a high feeding sucrose concentration (i.e., 30-40 g COD/L) and a short HRT (0.5 h), the CSABR reactor produced H2 more efficiently with the highest volumetric rate (VH2) of 15 L/h/L (i.e., 14.7 mol/d/L) and an optimal yield of ca. 3.5 mol H2/mol sucrose. The maximum VH2 value obtained from this work is much higher than any other VH2 values ever documented. Formation of self-flocculated granular sludge occurred during operation at a short HRT. The granule formation is thought to play a pivotal role in the dramatic enhancement of H2 production rate, because it led to more efficient biomass retention. A high biomass concentration of up to 35.4 g VSS/L was achieved even though the reactor was operated at an extremely low HRT (i.e., 0.5 h). In addition to gaining high biomass concentrations, formation of granular sludge also triggered a transition in bacterial community structure, resulting in a nearly twofold increase in the specific H2 production rate. According to denatured-gradient-gel-electrophoresis analysis, operations at a progressively decreasing HRT resulted in a decrease in bacterial population diversity. The culture with the best H2 production performance (at HRT = 0.5 h and sucrose concentration = 30 g COD/L) was eventually dominated by a presumably excellent H2-producing bacterial species identified as Clostridium pasteurianum.

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Section: Introductionmentioning

confidence: 99%

Fermentative hydrogen production and bacterial community structure in high‐rate anaerobic bioreactors containing silicone‐immobilized and self‐flocculated sludge

Hung

Lin

et al. 2005

Biotech & Bioengineering

251

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“…These parameters have specific influences on the productivity and yield per removed load (Tanisho and Ishiwata, 1995;Khanal et al, 2003;Wu et al, 2003;Lay, 2004a-b andFerchichi et al, 2005;Ito et al, 2005;Zhang et al, 2006;Mu et al, 2006;Liu et al, 2006;Jeong et al, 2007;Nishio and Nakashimada, 2007;Mohan et al, 2007;Alzate-Gaviria et al, 2007;Leite et al, 2008;Yang et al, 2008;Argun et al, 2008;OThong et al, 2008;Oztekin et al, 2008;SabourinProvost et al, 2009;Wu et al, 2010;Buitrón and Carvajal, 2010;Sreethawong et al, 2010;Badiei et al, 2011;Mohanakrishna et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

AnSBBR with circulation applied to biohydrogen production treating sucrose based wastewater: effects of organic loading, influent concentration and cycle length

Santos

Rodrigues

Ratusznei

et al. 2014

Braz. J. Chem. Eng.

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-An anaerobic sequencing batch biofilm reactor (AnSBBR) containing immobilized biomass and operating with recirculation of the liquid phase (total liquid volume 4.5 L; treated volume per cycle 1.9 L) was used to treat sucrose-based wastewater at 30 ºC and produce biohydrogen. The influence of applied volumetric organic load was studied by varying the influent concentration at 3600 and 5400 mgCOD.L -1 and using cycle lengths of 4, 3 and 2 hours, obtaining in this manner volumetric organic loads of 9, 12, 13.5, 18 and 27 gCOD.L . Different performance indicators were used: productivity and yield of biohydrogen per applied and removed load, reactor stability and efficiency based on the applied and removed organic loads, both in terms of organic matter (measured as COD) and carbohydrate (sucrose). The results revealed system stability (32-37% of H 2 in biogas) during biohydrogen production, as well as substrate consumption (12-19% COD; 97-99% sucrose). Conversion efficiencies decreased when the influent concentration was increased (at constant cycle length) and when cycle lengths were reduced (at constant influent concentrations). The best yield was 4.16 mol-H 2 .kg-SUC -1 (sucrose load) at 9 gCOD.L -1.d -1 (3600 mgCOD.L -1 and 4 h) with H 2 content in the biogas of 36% (64% CO 2 and 0% CH 4 ). However, the best specific molar productivity of hydrogen was 8.5 molH 2 .kgTVS .d -1 (5400 mgCOD.L -1 and 3 h), indicating that the best productivity tends to occur at higher organic loads, as this parameter involves the "biochemical generation" of biogas, whereas the best yield tends to occur at lower and/or intermediate organic loads, as this parameter involves "biochemical consumption" of the substrate. The most significant metabolites were ethanol, acetic acid and butyric acid. Microbiological analyses revealed that the biomass contained bacilli and endospore filaments and showed no significant variations in morphology between different experimental conditions.

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“…Spontaneous production of H 2 from formate and glucose by immobilized Escherichia coli showed 100% and 60% efficiencies, respectively. Enterobactericiae produce H 2 at similar efficiency range from different monosaccharides (Fabiano & Perego, 2002;Nakashimada et al, 2002;Tanisho & Ishiwata, 1995;Yokoi, et al, 1997Yokoi, et al, , 1998Yokoi, et al, , 2001). Among methylotrophs, methanogenes, rumen bacteria and thermophilic archae, Ruminococcus albus, are promising.…”

Section: Implication Of Phototrophs In Environmental Clean Up and Upgmentioning

confidence: 99%

Biofuel From Cellulosic Mass with Incentive for Feed Industry Employing Thermophilic Microbes

Qazi¹,

Chaudhary²,

Mirza³

2011

Biofuel Production-Recent Developments and Prospects

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Continuous hydrogen production from molasses by fermentation using urethane foam as a support of flocks

Cited by 117 publications

References 4 publications

Fermentative hydrogen production and bacterial community structure in high‐rate anaerobic bioreactors containing silicone‐immobilized and self‐flocculated sludge

Fermentative hydrogen production and bacterial community structure in high‐rate anaerobic bioreactors containing silicone‐immobilized and self‐flocculated sludge

AnSBBR with circulation applied to biohydrogen production treating sucrose based wastewater: effects of organic loading, influent concentration and cycle length

Biofuel From Cellulosic Mass with Incentive for Feed Industry Employing Thermophilic Microbes

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