Microbial responses to various process disturbances in a continuous hydrogen reactor fed with galactose

Gopalakrishnan Kumar; Jeong Hoon Park; Periyasamy Sivagurunathan; Sang Hoon Lee; Hee Deung Park; Sang Hyoun Kim

doi:10.1016/j.jbiosc.2016.08.006

Microbial responses to various process disturbances in a continuous hydrogen reactor fed with galactose

Gopalakrishnan Kumar, Jeong Hoon Park, Periyasamy Sivagurunathan, Sang Hoon Lee, Hee Deung Park, Sang Hyoun Kim

Department of Civil and Environmental Engineering

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

16 Citations (Scopus)

Abstract

In this study, microbial responses of a continuous hydrogen reactor fed with galactose have been investigated. Process disturbances reduced H₂ production performance as well as large fluctuations in microbial diversity. The peak values of the hydrogen yield (HY) was not influenced greatly during the steady state period, and accounted as 2.01 ± 0.05 and 2.14 ± 0.03 mol/mol galactose_added, while hydraulic retention time (HRT) was at 12 and 8 h, respectively. Microbial community analysis via 454 pyrosequencing revealed that functional redundancy following changes in the microbial community distribution led to the stability of the fermentation performance. The butyrate to acetate (B/A) ratio well correlated with changes in the microbial community. The energy generation rate and energy yield resulted in the peak values of 134 kJ/L-d and 612 kJ/mol_added.

Original language	English
Pages (from-to)	216-222
Number of pages	7
Journal	Journal of Bioscience and Bioengineering
Volume	123
Issue number	2
DOIs	https://doi.org/10.1016/j.jbiosc.2016.08.006
Publication status	Published - 2017 Feb 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2014R1A2A2A04005475).

Publisher Copyright:
© 2016 The Society for Biotechnology, Japan

All Science Journal Classification (ASJC) codes

Biotechnology
Bioengineering
Applied Microbiology and Biotechnology

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10.1016/j.jbiosc.2016.08.006

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title = "Microbial responses to various process disturbances in a continuous hydrogen reactor fed with galactose",

abstract = "In this study, microbial responses of a continuous hydrogen reactor fed with galactose have been investigated. Process disturbances reduced H2 production performance as well as large fluctuations in microbial diversity. The peak values of the hydrogen yield (HY) was not influenced greatly during the steady state period, and accounted as 2.01 ± 0.05 and 2.14 ± 0.03 mol/mol galactoseadded, while hydraulic retention time (HRT) was at 12 and 8 h, respectively. Microbial community analysis via 454 pyrosequencing revealed that functional redundancy following changes in the microbial community distribution led to the stability of the fermentation performance. The butyrate to acetate (B/A) ratio well correlated with changes in the microbial community. The energy generation rate and energy yield resulted in the peak values of 134 kJ/L-d and 612 kJ/moladded.",

author = "Gopalakrishnan Kumar and Park, {Jeong Hoon} and Periyasamy Sivagurunathan and Lee, {Sang Hoon} and Park, {Hee Deung} and Kim, {Sang Hyoun}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2014R1A2A2A04005475). Publisher Copyright: {\textcopyright} 2016 The Society for Biotechnology, Japan",

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AU - Lee, Sang Hoon

AU - Park, Hee Deung

AU - Kim, Sang Hyoun

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2014R1A2A2A04005475). Publisher Copyright: © 2016 The Society for Biotechnology, Japan

PY - 2017/2/1

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N2 - In this study, microbial responses of a continuous hydrogen reactor fed with galactose have been investigated. Process disturbances reduced H2 production performance as well as large fluctuations in microbial diversity. The peak values of the hydrogen yield (HY) was not influenced greatly during the steady state period, and accounted as 2.01 ± 0.05 and 2.14 ± 0.03 mol/mol galactoseadded, while hydraulic retention time (HRT) was at 12 and 8 h, respectively. Microbial community analysis via 454 pyrosequencing revealed that functional redundancy following changes in the microbial community distribution led to the stability of the fermentation performance. The butyrate to acetate (B/A) ratio well correlated with changes in the microbial community. The energy generation rate and energy yield resulted in the peak values of 134 kJ/L-d and 612 kJ/moladded.

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Microbial responses to various process disturbances in a continuous hydrogen reactor fed with galactose

Abstract

Bibliographical note

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