BioChem - DOS

Impact of varying lignocellulosic sugars on continuous solvent production in an immobilized column reactor

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Viikilä , Matti; Wallenius, Janne; Ojamo, Heikki; Granströ m, Tom; Survase, Shrikant A.

<P><B>Abstract</B></P> <P>The effect of varying glucose, mannose and xylose concentrations on continuous solvent production at various dilution rates was studied by multiple linear regression (MLR) modeling using an immobilized column reactor. The factors affecting the solvent production were dilution rate and concentrations of glucose and mannose. MLR-models also showed a preference of glucose as well as its inhibitory effect on xylose consumption. The fermentation process was studied at bigger scale with a volume factor of 17 with an added recirculation loop in the system. The up-scaled reactor produced 12.5g/l of acetone&ndash;butanol&ndash;ethanol (ABE) solvents at a dilution rate of 0.23h<SUP>&minus;1</SUP>, as compared to 13.4g/l with a smaller column reactor. The xylose utilization was significantly higher in the modified reactor (73%) as compared to the small scale (43%).</P> <P><B>Highlights</B></P> <P> <UL> <LI> Study suggests the preference of biomass feedstocks appropriate for ABE-fermentation. </LI> <LI> Effect of varying lignocellulosic sugar concentrations in continuous column reactor. </LI> <LI> Multi linear regression (MLR) modeling successfully used for continuous production of solvents. </LI> <LI> Scale up of column reactor is successfully demonstrated. </LI> </UL> </P>

2013

Elsevier

0960-8524

147

pp.299-306

10.1016/j.biortech.2013.08.058

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART66970381

ABE fermentation; Butanol; MLR modeling; Clostridium acetobutylicum