Title

運動發酵單胞菌酒精發酵糟液的全回流技術

Translated Titles

Study on Recycling Process of the Stillage in the Ethanol Fermentation by Zymomonas mobilis

Authors

石貴陽(Gui-Yang Shi);陶飛(Fei Tao);蔡宇傑(Yu-Jie Cai);徐柔(Rou Xu);章克昌(Ke-Chang Zhang)

Key Words

運動發酵單胞菌 ; 酒精發酵 ; 閉路循環 ; Zymomonas mobilis ; ethanol fermentation ; stillage ; recycling

PublicationName

食品與發酵工業

Volume or Term/Year and Month of Publication

30卷5期(2004 / 05 / 31)

Page #

69 - 71

Content Language

簡體中文

Chinese Abstract

酒精生產會產生大量的酒糟廢液,若不適當處理,將會對環境造成嚴重的污染。文中將細菌酒精發酵廢液經過過濾後,代替拌料用水,循環用於酒精生產。回流發酵進行了8批,酒精產量沒有降低,體積分數穩定在7.3%左右。發酵液殘糖和最終pH也趨於穩定,分別在1.5g/L和4.0上下波動。相對於酵母酒糟回流技術,細菌酒糟回流技術所需的處理過程更簡單。而且在回流中,不需要每次都添加氮源,這樣可以減少發酵有害物質的積累,有利於實現酒糟濾液全回流。

English Abstract

Ethanol production could carry out large amount of ethanol stillage, which is one of main pollution sources in ethanol fermentation. But if the filtrate from stillage is used to replace process water in the ethanol fermentation, the pollution can be eliminated and the nutrients in the stillage can be re-used. In this paper, the filtrate of the ethanol stillage is used as water and nourishment for ethanol production. The average value with 7.3% (v/v) was obtained from eight recycle periods by the new process. By the same token, the residual sugar of 1.5g/L and final pH of 4.0 were observed. The new Zymomonas mobilis fermentation process only needs a simple apparatus for filtration of the fermented broth; the nitrogen sources, such as peptone and yeast extract, can be reused each time. As a result, this new process eliminates pollution and reduces the cost of ethanol production.

Topic Category 工程學 > 化學工業