Enhancement in xylonate production from hemicellulose pre-hydrolysate by powdered activated carbon treatment

被引：44

作者：

Dai, Lin ^{[1
,2
,3
]}

Jiang, Wenfei ^{[1
,2
]}

Zhou, Xin ^{[1
,2
,3
]}

Xu, Yong ^{[1
,2
,3
]}

机构：

[1] Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Peoples R China

[2] Nanjing Forestry Univ, Minist Educ, Key Lab Forestry Genet & Biotechnol, Nanjing 210037, Peoples R China

[3] Jiangsu Prov Key Lab Green Biomass Based Fuels &, Nanjing 210037, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 316卷

基金：

中国国家自然科学基金;

关键词：

Xylonic acid (XA); Pre-hydrolysate; Powdered activated carbon (PAC); Gluconobacter oxydans (G. oxydans); GLUCONOBACTER-OXYDANS; CORNCOB; ACID; FERMENTATION; PRETREATMENT; XYLOSE; OPTIMIZATION; FEEDSTOCK; CHEMICALS; PLATFORM;

D O I：

10.1016/j.biortech.2020.123944

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Xylonic acid can be produced with high-yield from hemicelullosic xylose, which accounts for 25% of the total sugars in lignocellulosic material. The key barrier associated with efficient bio-oxidation of hemicellulosic xylose to xylonic acid is the serious foam formed in downstream air-aerated and agitated bioreaction process, which caused by the high viscosity of concentrated pre-hydrolysate. Powdered activated carbon treatment can selectively absorb the non-sugar compounds with relatively low losses of xylose, which is beneficial for the valuable xylose derivatives production. In this present study, powdered activated carbon was employed for treating the concentrated pre-hydrolysate from diluted acid pretreated corncob. The results indicated that the powdered activated carbon treatment significantly reduced the viscosity of concentrated pre-hydrolysate and the other non-sugar compounds, which enabled scale-up lignocellulosic xylonic acid production using the air-aerated and agitated bioreactor.

引用

页数：4

共 25 条

[1] Corncobs as a Potential Source of Functional Chemicals [J].