BioChem - DOS

Lactic acid production from sugarcane bagasse by an integrated system of lignocellulose fractionation, saccharification, fermentation, and ex-situ nanofiltration

Journal of environmental chemical engineering

Oonkhanond, Bovornlak; Jonglertjunya, Woranart; Srimarut, Nattawee; Bunpachart, Prach; Tantinukul, Sapon; Nasongkla, Norased; Sakdaronnarong, Chularat

<P><B>Abstract</B></P> <P>Selective sugarcane bagasse (SCB) fractionation was conducted to produce cellulose-rich material for separate saccharification and fermentation to lactic acid. The highest glucose yield of 87.1% based on the polysaccharides in treated SCB was from a 2-step acid ethanolysis/alkaline peroxide pretreatment. The yield of lactic acid due to fermentation by <I>Lactobacillus casei</I> from SCB hydrolysate in a 3-L bioreactor was about 21.3g/L after 120h with the productivity of about 0.63g/Lh. For lactic acid separation, the low flux nanofiltration membrane showed higher performance in comparison with the high flux membrane. Using nanofiltration with low flux membrane, lactic acid was efficiently separated from the fermentation broth with glucose rejection of about 93.28%. The selectivity of the low flux membrane for separation of lactic acid and glucose in fermentation broth at 6bar was found to be 82.48.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

2017

Elsevier

2213-2929

2213-3437

5

3

pp.2533-2541

10.1016/j.jece.2017.05.004

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART78053689

Lignocellulose pretreatment; Organosolv delignification of sugarcane bagasse; Separate saccharification and fermentation; Lactic acid production; Nanofiltration; Membrane separation