The utilization of acid-tolerant bacteria on ethanol production from kitchen garbage

Hongzhi Ma, Qunhui Wang, Dayi Qian, Lijuan Gong and Wenyu Zhang

Renewable Energy, 2009, vol. 34, issue 6, 1466-1470

Abstract: In order to achieve ethanol production from kitchen garbage under non-sterilized fermentation, the acid-tolerant Zymomonas mobilis named GZNS1 was selected and applied in the fermentation system. Ethanol production from kitchen garbage under non-sterilized fermentation with GZNS1 was proved to be feasible. The utilization of control strain and acid-tolerant strain under different conditions demonstrated that the sequence of ethanol yield was followed: sterilized garbage with control strain inoculated under pH of 6 (52g/L)≈sterilized garbage with GZNS1 inoculated under pH of 4 (48g/L)>non-sterilized garbage with GZNS1 inoculated under pH of 4 (46g/L). Furthermore, the distillery waste during fermentation was adopted to recycle fermentation and acquired 50g/L ethanol, higher than those adjusted with tap water. The utilization of acid-tolerant bacteria combing with the utilization of distillery waste associated with the process can increase ethanol production, save energy and reduce the cost of ethanol production.

Keywords: Acid-tolerant bacteria; Kitchen garbage; Distillery waste; Ethanol production (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:34:y:2009:i:6:p:1466-1470

DOI: 10.1016/j.renene.2008.10.020

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