Bioconversion of residual glycerol from biodiesel synthesis into 1,3-propanediol and ethanol by isolated bacteria from environmental consortia

被引：71

作者：

Rossi, Daniele Misturini ^{[1
]}

da Costa, Janaina Berne ^{[2
]}

de Souza, Elisangela Aquino ^{[1
]}

Ruaro Peralba, Maria do Carmo ^{[2
]}

Zachia Ayub, Marco Antonio ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Food Sci & Technol Inst, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Fed Rio Grande do Sul, Inst Chem, Dept Organ Chem, BR-91501970 Porto Alegre, RS, Brazil

来源：

RENEWABLE ENERGY | 2012年 / 39卷 / 01期

关键词：

1,3-Propanediol; Ethanol; Raw glycerol; Biodiesel; Bacteria consortium; HYDROGEN-PRODUCTION; KLEBSIELLA-PNEUMONIAE; FERMENTATION; CONVERSION; WASTES; STRAIN;

D O I：

10.1016/j.renene.2011.08.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Residual (raw) glycerol originated from biodiesel synthesis is becoming of great environmental and economical concern due to its ever-growing surplus. In the present study, several bacterial strains were isolated and characterized for their ability to convert this raw glycerol into 1,3-propanediol (1,3-PD) and ethanol. The best producers of both 1,3-PD and ethanol were identified by 16S rDNA sequences to be Klebsiella pneumoniae and Pantoea agglomerans strains. Batch bioreactor cultivations under anaerobic and aerobic conditions were carried out in order to access the kinetics of glycerol consumption and product formation. Results showed that one isolated, K. pneumoniae BLh-1, was able to simultaneously produce up to 9.4 g/L of 1,3-PD with yields of 0.41 mol product mol(-1) glycerol, and 6.1 g/L of ethanol with yields of 0.14 mol product mol(-1) glycerol under anaerobic conditions, showing great potential for bioprocesses. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：223 / 227

页数：5

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