Granular activated carbon supplementation alters the metabolic flux of Clostridium butyricum for enhanced biohydrogen production
- Authors
- Park, Jeong-Hoon; Kim, Do-Hyung; Kim, Han-Shin; Wells, George F.; Park, Hee-Deung
- Issue Date
- 6월-2019
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Biohydrogen; Clostridium butyricum; Granular activated carbon (GAC); Metabolic pathway; RNA sequencing
- Citation
- BIORESOURCE TECHNOLOGY, v.281, pp.318 - 325
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 281
- Start Page
- 318
- End Page
- 325
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/64855
- DOI
- 10.1016/j.biortech.2019.02.090
- ISSN
- 0960-8524
- Abstract
- In this work, the effects of granular activated carbon (GAC) supplementation on hydrogen fermentation were investigated in Clostridium butyricum. Maximum hydrogen production rate and ultimate hydrogen volume increased up to 1.7 and 1.9 fold, respectively, with 1 g/L GAC supplementation. Indicators of stable hydrogen production, such as acetate and butyrate formation increased with increasing GAC concentration. To identify the factors for hydrogen production enhancement, transcriptome analysis was conducted. Functional genes related to hydrogen production increased by GAC supplementation (1.75 fold for pfor and 1.48 fold for oxct). On the other hand, functional genes related to hydrogen consumption decreased (1.78 fold for ldh, 0.67 fold for adh, 1.64 fold for hbd, 2.4 fold for crt, and 0.71 fold for buk). Considered together, these results suggested that GAC supplementation increased biohydrogen production by changing the metabolic flux associated with hydrogen production and consumption pathways.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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