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Yin T, Cao G, Ren H, Xing D, Xie G, Liu B. Thermoanaerobacterium sp. Strain RBIITD as a dominant species in accelerating thermophilic dark fermentation start up through pH and substrate concentration regulation. BIORESOURCE TECHNOLOGY 2020; 310:123426. [PMID: 32344241 DOI: 10.1016/j.biortech.2020.123426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
In this work, accelerated start-up of biological hydrogen production system fed with glucose and molasses at 55 °C by regulating pH and COD concentration was investigated in two groups. Then three reactors in each group were compared: controlling pH, controlling pH with COD, and controlling the COD. The reactors in group A presented best hydrogen yield of 1.84 mol H2/mol glucose·day and worked stably at the 8th day. The highest hydrogen yield in group B was 2.13 mol H2/mol molasses·day and steadily at the 11th day. It proved that controlling two key parameters of the inflow pH (8.0) and substrate concentration (4000 mg COD/L) could realize fast start-up of hydrogen production reactor. This study demonstrated that Thermoanaerobacterium sp. strain RBIITD could produce hydrogen and provide a new avenue for biological hydrogen production by dark fermentation using cheap substrate towards a more sustainable and feasible technology.
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Affiliation(s)
- Tianming Yin
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, P. O. Box 2614, 73 Huanghe Road, Harbin 150090, China
| | - Guangli Cao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, P. O. Box 2614, 73 Huanghe Road, Harbin 150090, China
| | - Hongyu Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, P. O. Box 2614, 73 Huanghe Road, Harbin 150090, China
| | - Defeng Xing
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, P. O. Box 2614, 73 Huanghe Road, Harbin 150090, China
| | - Guojun Xie
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, P. O. Box 2614, 73 Huanghe Road, Harbin 150090, China
| | - Bingfeng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, P. O. Box 2614, 73 Huanghe Road, Harbin 150090, China.
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