期刊
BIOPROCESS AND BIOSYSTEMS ENGINEERING
卷 43, 期 6, 页码 1119-1122出版社
SPRINGER
DOI: 10.1007/s00449-020-02291-y
关键词
Pressurized cultivation; Water-gas shift reaction; Carbon monoxide; Hydrogen
资金
- Marine Biotechnology Program - Ministry of Oceans and Fisheries, Korea [20150581]
- New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grants from Ministry of Trade, Industry and Energy [20173010092460]
While the hydrogen economy is receiving growing attention, research on microbial hydrogen production is also increasing. Microbial water-gas shift reaction is advantageous as it produces hydrogen from by product gas including carbon monoxide (CO). However, CO solubility in water is the bottleneck of this process by low mass transfer. Thermococcus onnurineus NA1 strain can endure a high-pressure environment and can enhance hydrogen production in a pressurized reactor by increasing CO solubility. As CO causes cell toxicity, two important factors, pressure and input gas flow rate, should be considered for process control during cultivation. Hence, we employed different operational strategies for enhancing hydrogen production and obtained 577 mmol/L/h of hydrogen productivity. This is the highest hydrogen productivity reported to date from microbial water-gas shift reaction.
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