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High yield simultaneous hydrogen and ethanol production under extreme-thermophilic (70 °C) mixed culture environment by Chenxi Zhao; Sompong O-Thong; Dimitar Karakashev; Irini Angelidaki; Wenjing Lu; Hongtao Wang is a Engineering article available to read on EtoBox.
What is High yield simultaneous hydrogen and ethanol production under extreme-thermophilic (70 °C) mixed culture environment about?
The effect of pH and medium composition on extreme-thermophilic (70 C) dark fermentative simultaneous hydrogen and ethanol production (process performance and microbial ecology) was investigated. Hydrogen and ethanol yields were optimized with respect to glucose, peptone, FeSO 4 , NaHCO 3 , yeast extract, trace mineral salts, vitamins, and phosphate buffer concentrations as well as initial pH as independent variables. A combination of low levels of both glucose ( 2 g/L) and vitamin solutions ( 1 mL/L) and high levels of initial pH (!7), mineral salts solution (!5 mL/L) and FeSO 4 (!100 mg/L) stimulated the hydrogen production, while high level of glucose (!5 g/L) and low levels of both initial pH ( 5.5) and mineral salts solution ( 1 mL/L) enhanced the ethanol production. High yield of simultaneous hydrogen and ethanol production (1.58 mol H 2 /mol glucose combined with an ethanol yield of 0.90 mol ethanol/mol glucose) was achieved under extreme-thermophilic mixed culture environment. Results obtained showed that the shift of the metabolic pathways favouring either hydrogen or ethanol production was affected by the change in cultivation conditions (pH and medium composition). The m
Who reads High yield simultaneous hydrogen and ethanol production under extreme-thermophilic (70 °C) mixed culture environment?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Chenxi Zhao; Sompong O-Thong; Dimitar Karakashev; Irini Angelidaki; Wenjing Lu; Hongtao Wang
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0360-3199)
- Published
- 2009
- Language
- EN
- Field
- Engineering (Physical Sciences)