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Erschienen in: Cellulose 4/2012

01.08.2012 | Original Paper

Cellulose solvent-based pretreatment for corn stover and avicel: concentrated phosphoric acid versus ionic liquid [BMIM]Cl

verfasst von: Noppadon Sathitsuksanoh, Zhiguang Zhu, Y.-H. Percival Zhang

Erschienen in: Cellulose | Ausgabe 4/2012

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Abstract

Since cellulose accessibility has become more recognized as the major substrate characteristic limiting hydrolysis rates and glucan digestibilities, cellulose solvent-based lignocellulose pretreatments have gained attention. In this study, we employed cellulose solvent- and organic solvent-based lignocellulose fractionation using two cellulose solvents: concentrated phosphoric acid [~85 % (w/w) H3PO4] and an ionic liquid Butyl-3-methylimidazolium chloride ([BMIM]Cl). Enzymatic glucan digestibilities of concentrated phosphoric acid- and [BMIM]Cl-pretreated corn stover were 96 and 55 % after 72 h at five filter paper units of cellulase per gram of glucan, respectively. Regenerated amorphous cellulose by concentrated phosphoric acid and [BMIM]Cl had digestibilities of 100 and 92 %, respectively. Our results suggested that differences in enzymatic glucan digestibilities of concentrated phosphoric acid- and [BMIM]Cl-pretreated corn stover were attributed to combinatory factors. These results provide insights into mechanisms of cellulose solvent-based pretreatment and effects of residual cellulose solvents and lignin on enzymatic cellulose hydrolysis.

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Metadaten
Titel
Cellulose solvent-based pretreatment for corn stover and avicel: concentrated phosphoric acid versus ionic liquid [BMIM]Cl
verfasst von
Noppadon Sathitsuksanoh
Zhiguang Zhu
Y.-H. Percival Zhang
Publikationsdatum
01.08.2012
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 4/2012
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-012-9719-z

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