Biohydrogen Production from Lignocellulosic Biomass by Extremely Halotolerant Bacterial Communities from a Salt Pan and Salt-Damaged Soil

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Contribution to Books

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Handbook of Environmental Engineering: Integrated Natural Resources Research


Extremely halotolerant hydrogen-producing bacteria were investigated, owing to their ability to live in high salinity conditions. Based on this characteristic, it was hypothesized that extremely halophilic hydrogen-producing bacteria can tolerate high concentrations of Na+ ions. To test this hypothesis, we investigated the characteristics of extremely halotolerant hydrogen-producing bacteria obtained from salt-damaged soil in Khon Kaen and a commercial salt pan field near Bangkok (Samut Sakhon), Thailand. Results of this preliminary investigation showed that hydrogen production under saturated conditions of 26% (6 M) NaCl was possible after 1 year of acclimatization. The extremely halotolerant hydrogen-producing bacteria in this research were also confirmed to have a requirement for Cl− ions for hydrogen production. Therefore, these extremely halotolerant hydrogen-producing bacteria are suitable for hydrogen production from lignocellulosic biomass.