Deciphering butanol inhibition to Clostridial species in acclimatized sludge for improving biobutanol production

Bor Yann Chen, Fu Yu Chuang, Chung Liang Lin, Jo-Shu Chang

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

This study aimed to quantitatively evaluate the correlations between butanol (BtOH) tolerance of solvent-producing bacteria (SPB) and the performance of fermentative butanol production. The toxicity potency of BtOH was revealed to suggest the feasibility of butanol formation with a Clostridial species-dominated bacterial consortium. When the mixed culture was grown on the optimal medium comprising 60g/L glucose, 0.5g/L FeSO4·7H2O and 5.13g/L yeast extract, the maximal tolerant butanol concentration, butanol production, hydrogen production and glucose consumption were ca. 16g/L, 10.64±0.60g/L, 4153±815mL/L and 54.99±1.92g/L, respectively. Moreover, almost all the dose-response curves representing toxicity potency of butanol on microbial characteristics was nearly identical in order of magnitude. Thus, although generations of by-products during butanol fermentation are interactive, the maintenance of microbial growth capability still plays a crucial role to control the performance of butanol production. The quantitative findings in toxicological terms directly suggest that the BtOH toxicity seemed to be inevitable during BtOH production. In addition, butanol inhibition could be reversibly attenuated by removal of butanol to make it below the critical level (ca. 7.83-9.52g/L or EC50).

原文English
頁(從 - 到)100-105
頁數6
期刊Biochemical Engineering Journal
69
DOIs
出版狀態Published - 2012 十二月 15

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering
  • Environmental Engineering

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