Hydrogen fermentation of different galactose-glucose compositions during various hydraulic retention times (HRTs)

Gopalakrishnan Kumar; Jong Hun Park; Mi Sun Kim; Dong Hoon Kim; Sang Hyoun Kim

doi:10.1016/j.ijhydene.2014.08.137

Hydrogen fermentation of different galactose-glucose compositions during various hydraulic retention times (HRTs)

Gopalakrishnan Kumar, Jong Hun Park, Mi Sun Kim, Dong Hoon Kim, Sang Hyoun Kim

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

This study investigated the effects of sugar composition and hydraulic retention time (HRT) on continuous hydrogen fermentation. Continuously-stirred tank reactors (CSTRs) were inoculated with heat-treated digester sludge and fed with 15 g/L of glucose, galactose and galactose: glucose mixture (8:2 ratio-simulating the hydrolysate composition of macroalgae) at HRTs of 6-24 h. Peak hydrogen production rate (HPR) and hydrogen yield (HY) of 4.49 L/L/d and 1.62 mol/mol glucose_added were attained while using glucose as feedstock at HRTs of 6 and 18 h, respectively. Meanwhile, galactose provided a peak HPR and HY of 2.35 L/L/d and 1.00 mol/mol galactose_added during the HRTs of 12 and 24 h, respectively. In case of mixed sugars (galactose 8: glucose 2) the production performances were inferior to the sole sugar conditions due to the low substrate utilization of less than 65%, which showed a maximal HPR and HY of 2.75 L/L/d and 0.48 mol/mol carbohydrate_added at the HRTs of 6 and 18 h, respectively.

Original language	English
Pages (from-to)	20625-20631
Number of pages	7
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	35
DOIs	https://doi.org/10.1016/j.ijhydene.2014.08.137
Publication status	Published - 2014 Dec 3

Bibliographical note

Funding Information:
This work was conducted under the framework of Research and Development Program of the Korea Institute of Energy Research (KIER) ( B4-2474-02 ).

Publisher Copyright:
© 2014 Hydrogen Energy Publications, LLC. All rights reserved.

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2014.08.137

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title = "Hydrogen fermentation of different galactose-glucose compositions during various hydraulic retention times (HRTs)",

abstract = "This study investigated the effects of sugar composition and hydraulic retention time (HRT) on continuous hydrogen fermentation. Continuously-stirred tank reactors (CSTRs) were inoculated with heat-treated digester sludge and fed with 15 g/L of glucose, galactose and galactose: glucose mixture (8:2 ratio-simulating the hydrolysate composition of macroalgae) at HRTs of 6-24 h. Peak hydrogen production rate (HPR) and hydrogen yield (HY) of 4.49 L/L/d and 1.62 mol/mol glucoseadded were attained while using glucose as feedstock at HRTs of 6 and 18 h, respectively. Meanwhile, galactose provided a peak HPR and HY of 2.35 L/L/d and 1.00 mol/mol galactoseadded during the HRTs of 12 and 24 h, respectively. In case of mixed sugars (galactose 8: glucose 2) the production performances were inferior to the sole sugar conditions due to the low substrate utilization of less than 65%, which showed a maximal HPR and HY of 2.75 L/L/d and 0.48 mol/mol carbohydrateadded at the HRTs of 6 and 18 h, respectively.",

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note = "Funding Information: This work was conducted under the framework of Research and Development Program of the Korea Institute of Energy Research (KIER) ( B4-2474-02 ). Publisher Copyright: {\textcopyright} 2014 Hydrogen Energy Publications, LLC. All rights reserved.",

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AU - Kim, Mi Sun

AU - Kim, Dong Hoon

AU - Kim, Sang Hyoun

N1 - Funding Information: This work was conducted under the framework of Research and Development Program of the Korea Institute of Energy Research (KIER) ( B4-2474-02 ). Publisher Copyright: © 2014 Hydrogen Energy Publications, LLC. All rights reserved.

PY - 2014/12/3

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N2 - This study investigated the effects of sugar composition and hydraulic retention time (HRT) on continuous hydrogen fermentation. Continuously-stirred tank reactors (CSTRs) were inoculated with heat-treated digester sludge and fed with 15 g/L of glucose, galactose and galactose: glucose mixture (8:2 ratio-simulating the hydrolysate composition of macroalgae) at HRTs of 6-24 h. Peak hydrogen production rate (HPR) and hydrogen yield (HY) of 4.49 L/L/d and 1.62 mol/mol glucoseadded were attained while using glucose as feedstock at HRTs of 6 and 18 h, respectively. Meanwhile, galactose provided a peak HPR and HY of 2.35 L/L/d and 1.00 mol/mol galactoseadded during the HRTs of 12 and 24 h, respectively. In case of mixed sugars (galactose 8: glucose 2) the production performances were inferior to the sole sugar conditions due to the low substrate utilization of less than 65%, which showed a maximal HPR and HY of 2.75 L/L/d and 0.48 mol/mol carbohydrateadded at the HRTs of 6 and 18 h, respectively.

AB - This study investigated the effects of sugar composition and hydraulic retention time (HRT) on continuous hydrogen fermentation. Continuously-stirred tank reactors (CSTRs) were inoculated with heat-treated digester sludge and fed with 15 g/L of glucose, galactose and galactose: glucose mixture (8:2 ratio-simulating the hydrolysate composition of macroalgae) at HRTs of 6-24 h. Peak hydrogen production rate (HPR) and hydrogen yield (HY) of 4.49 L/L/d and 1.62 mol/mol glucoseadded were attained while using glucose as feedstock at HRTs of 6 and 18 h, respectively. Meanwhile, galactose provided a peak HPR and HY of 2.35 L/L/d and 1.00 mol/mol galactoseadded during the HRTs of 12 and 24 h, respectively. In case of mixed sugars (galactose 8: glucose 2) the production performances were inferior to the sole sugar conditions due to the low substrate utilization of less than 65%, which showed a maximal HPR and HY of 2.75 L/L/d and 0.48 mol/mol carbohydrateadded at the HRTs of 6 and 18 h, respectively.

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Hydrogen fermentation of different galactose-glucose compositions during various hydraulic retention times (HRTs)

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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