Enhanced hydrogen production from water hyacinth by a combination of ultrasonic-assisted alkaline pretreatment, dark fermentation, and microbial electrolysis cell
- Authors
- Tran, Thi Thu Ha; Nguyen, Phan Khanh Thinh
- Issue Date
- Aug-2022
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Hydrogen; Water hyacinth; Ultrasonic-assisted alkaline pretreatment; Dark fermentation; Microbial electrolysis cell
- Citation
- BIORESOURCE TECHNOLOGY, v.357, pp.0 - 0
- Journal Title
- BIORESOURCE TECHNOLOGY
- Volume
- 357
- Start Page
- 0
- End Page
- 0
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/84607
- DOI
- 10.1016/j.biortech.2022.127340
- ISSN
- 0960-8524
- Abstract
- In this study, hydrogen (H-2) production from water hyacinth (WH) was enhanced by the integration of the ultrasonic-assisted alkaline (UAA) pretreatment, dark fermentation (DF), and microbial electrolysis cell (MEC). The results showed that UAA pretreatment improved around 350% in H-2 production in the DF stage and nearly 400% in the whole process compared to un-pretreated. The H-2 yield in the DF stage reached the maximum value of 110.4 mL/g-VS at a WH concentration of 20 g-TS/L. However, high concentrations of co-produced soluble metabolite products (SMPs) and suspended solid in DF effluent adversely affected the efficiency of the MEC stage. Consequently, a WH concentration of 5 g-TS/L was optimal for the UAA-DF-MEC process that achieved the highest H-2 yield of 565.8 mL/g-VS. It suggests that other auxiliary processes (e.g., dilution, centrifugation, effective methanogen inhibition, etc.) need to be developed to further improve the H2 production from WH via the UAA-DF-MEC process.
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Collections - 공과대학 > 화공생명공학과 > 1. Journal Articles
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