Co-generation of microbial lipid and bio-butanol from corn cob bagasse in an environmentally friendly biorefinery process.
Biorefinery process of corn cob bagasse was investigated by integrating microbial lipid and ABE fermentation. The effects of NaOH concentration on the fermentations performance were evaluated. The black liquor after pretreatment was used as substrate for microbial lipid fermentation, while the enzymatic hydrolysates of the bagasse were used for ABE fermentation. The results demonstrated that under the optimized condition, the cellulose and hemicellulose in raw material could be effectively utilized. Approximate 87.7% of the polysaccharides were converted into valuable biobased products (∼175.7g/kg of ABE along with ∼36.6g/kg of lipid). At the same time, almost half of the initial COD (∼48.9%) in the black liquor could be degraded. The environmentally friendly biorefinery process showed promising in maximizing the utilization of biomass for future biofuels production.
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
Di
D
Cai
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
Zhongshi
Z
Dong
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
Yong
Y
Wang
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
Changjing
C
Chen
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
Ping
P
Li
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address: qinpeiyong@tsinghua.org.cn.
Peiyong
P
Qin
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
Zheng
Z
Wang
National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China.
Tianwei
T
Tan
D000096:Acetone / Q000378:metabolism; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D000440:Butanols / Q000378:metabolism*; D002482:Cellulose / Q000737:chemistry / Q000378:metabolism*; D000431:Ethanol / Q000378:metabolism; D005285:Fermentation; D050356:Lipid Metabolism; D059013:Microbial Consortia; D011134:Polysaccharides / Q000378:metabolism; D062065:Wastewater / Q000737:chemistry; D003313:Zea mays / Q000737:chemistry* / Q000378:metabolism
D000096:Acetone; D056804:Biofuels; D000440:Butanols; D002482:Cellulose; D000431:Ethanol; D011134:Polysaccharides; D062065:Wastewater; C007916:hemicellulose; C027433:bagasse
ABE fermentation; Biorefinery; Corn cob bagasse; Microbial lipid fermentation