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Comparison of steam-alkali-chemical and microwave-alkali pretreatment for enhancing the enzymatic saccharification of oil palm trunk

Lai, L. W. and Idris, A. (2016) Comparison of steam-alkali-chemical and microwave-alkali pretreatment for enhancing the enzymatic saccharification of oil palm trunk. Renewable Energy, 99 . pp. 738-746. ISSN 0960-1481

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Abstract

This paper demonstrates two different pretreatment protocols for oil palm trunks (OPT); steam-alkali-chemical (SAC) and microwave-alkali (Mw-A) method. The composition, morphology, structure and crystallinity of OPT before and after pretreatment were analyzed. The effectiveness of the pretreated methods was investigated by performing enzymatic saccharification on the OPT. The physiochemical factors namely: enzyme ratio (cellulase to β-glucosidase), pH, temperature and substrate loading (w/v) on enzymatic saccharification were also investigated. The pre-determined optimal conditions were then used for further enzymatic hydrolysis of raw and pretreated OPT substrates. The results revealed a huge degree of reduction in lignin, up to 89% for SAC treated OPT and at least 15% for Mw-A treated OPT sample as compared to untreated ones. High glucose accumulation (79.4%) was obtained after 72 h saccharification for both pretreated OPT samples.

Item Type:Article
Uncontrolled Keywords:Lignin, Palm oil, Saccharification, Substrates, Cellulase, Composition determination, Crystallinity index, Lignocellulose, Morphology analysis, Structure characterization, Enzymatic hydrolysis, cellulose, chemical method, crystallinity, enzyme activity, experimental study, hydrolysis, lignin, morphology, substrate, Chemical Reactions, Crystallinity, Lignocellulose, Pretreatment, Saccharification, Stems, Elaeis
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:71865
Deposited By: Fazli Masari
Deposited On:22 Nov 2017 12:07
Last Modified:22 Nov 2017 12:07

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