Evaluation of hot compressed water pretreatment and enzymatic saccharification of tulip tree sawdust using severity factors

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논문

Evaluation of hot compressed water pretreatment and enzymatic saccharification of tulip tree sawdust using severity factors

학술지

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

저자명

Kim, D.S.; Myint, A.A.; Lee, H.W.; Yoon, J.; Lee, Y.W.

초록

Tulip tree sawdust was pretreated using hot compressed water with different pretreatment severities (LogR<SUB>0</SUB>, 3.05-5.01) by varying reaction temperatures (180-220<SUP>o</SUP>C) and residence time (1-30min). It is found that the chemical composition and physicochemical properties of the pretreated products can be characterized and correlated with severity. Removal of most of the xylan and other hemicellulosic sugars from the raw material was observed at a severity of 4.5. Thus, the residual solids were recovered with increased cellulose and lignin contents. Nearly complete glucan conversion was achieved after 48h of hydrolysis with 10FPU/g of wet residual solid obtained above a severity of 4.8. The characteristics of the pretreated solids according to the pretreatment severity were strongly related with the glucose yield. The removal of structural barriers to the enzyme attack was the dominant factor affecting enzyme accessibility to the substrate.

발행연도

2013

발행기관

Elsevier Applied Science

ISSN

0960-8524

권

144

페이지

pp.460-466

DOI

10.1016/j.biortech.2013.06.071