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Pretreatment of fibre sludge in ionic liquids followed by enzyme and acid catalysed hydrolysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
55335 47048 2012 5 PDF Available
Title
Pretreatment of fibre sludge in ionic liquids followed by enzyme and acid catalysed hydrolysis
Abstract

Pretreatment of fibre sludge in ionic liquids and enzyme or acid catalysed hydrolysis of fibre sludge is studied. Ionic liquids, i.e. 1-allyl-3-methylimidazolium chloride ([AMIM]Cl) and 1-butyl-3-methylimidazolium chloride ([BMIM]Cl), are used in the pretreatment step. Effect of ionic liquid (IL) pretreatment on the acid and enzyme catalysed hydrolysis of fibre sludge is considered.Cellulose content of fibre sludge is more than 80 wt%, and therefore, reducing sugars obtained as a result of hydrolysis contain mostly glucose. To maximize the yield of reducing sugars during the enzymatic hydrolysis, the combinations of selective enzymes are required. Results also show that the use of ionic liquids in the pretreatment step before acid and enzyme hydrolysis increases significantly the yield of total reducing sugars.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (51 K)Download as PowerPoint slideHighlights► Fibre sludge, a by-product from the pulping process, is a potential biomass for enzymatic hydrolysis. ► Further, for the production of biofuels via sugar platform. ► Fibre sludge can be hydrolysed to reducing sugars with high yield. ► The Presence of ionic liquids makes hydrolysis more efficient.

Keywords
Biomass; Acid hydrolysis; Enzymatic hydrolysis; Glucose; Ionic liquid
First Page Preview
Pretreatment of fibre sludge in ionic liquids followed by enzyme and acid catalysed hydrolysis
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 196, Issue 1, 30 November 2012, Pages 11–15
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis