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Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification

Background: Much attention has been given to applying ionic liquids (ILs) as an alternative pretreatment method for lignocellulosic biomass. This study aims to select the most suitable type of IL for pretreating sugarcane bagasse (SCB). The potential of ILs for pretreatment was evaluated and compare...

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Main Authors: Yoon, Li Wan, Ngoh, Gek Cheng, Chua, Adeline Seak May, Hashim, Mohd Ali
Format: Article
Published: Wiley 2011
Subjects:
TP Chemical technology
Online Access:http://eprints.um.edu.my/789/
https://doi.org/10.1002/jctb.2651
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spelling my.um.eprints.7892019-11-15T08:26:03Z http://eprints.um.edu.my/789/ Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification Yoon, Li Wan Ngoh, Gek Cheng Chua, Adeline Seak May Hashim, Mohd Ali TP Chemical technology Background: Much attention has been given to applying ionic liquids (ILs) as an alternative pretreatment method for lignocellulosic biomass. This study aims to select the most suitable type of IL for pretreating sugarcane bagasse (SCB). The potential of ILs for pretreatment was evaluated and compared with conventional pretreatment media, acids and alkalis. The performance of the pretreatment media was evaluated based on the amount of reducing sugar produced from enzymatic saccharification, the energy requirement, and changes in the chemical structure and crystallinity index of the pretreated bagasse. Results: 1-ethyl-3-methylimidazolium acetate [EMIM]oAc was selected as the most suitable IL for SCB pretreatment. The optimum yields of reducing sugar obtained from [EMIM]oAc-, alkali-, and acid-pretreated SCB were 69.5%, 92.8% and 41.3%, respectively. Although a lower yield of reducing sugar was obtained, [EMIM]oAc pretreatment required the least energy to pretreat 1 kg of SCB. Moreover, the percentage of SCB loss during [EMIM]oAc pretreatment was the lowest. [EMIM]oAc-pretreated SCB also had the lowest crystallinity index (CI) with the most amorphous structure. Conclusion: [EMIM]oAc appears to be another option for pretreating SCB, and other issues such as the recyclability of [EMIM]oAc is worth investigating. © 2011 Society of Chemical Industry. Wiley 2011 Article PeerReviewed Yoon, Li Wan and Ngoh, Gek Cheng and Chua, Adeline Seak May and Hashim, Mohd Ali (2011) Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification. Journal of Chemical Technology and Biotechnology, 86 (10). pp. 1342-1348. ISSN 0268-2575 https://doi.org/10.1002/jctb.2651 doi:10.1002/jctb.2651
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Yoon, Li Wan
Ngoh, Gek Cheng
Chua, Adeline Seak May
Hashim, Mohd Ali
Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification
description Background: Much attention has been given to applying ionic liquids (ILs) as an alternative pretreatment method for lignocellulosic biomass. This study aims to select the most suitable type of IL for pretreating sugarcane bagasse (SCB). The potential of ILs for pretreatment was evaluated and compared with conventional pretreatment media, acids and alkalis. The performance of the pretreatment media was evaluated based on the amount of reducing sugar produced from enzymatic saccharification, the energy requirement, and changes in the chemical structure and crystallinity index of the pretreated bagasse. Results: 1-ethyl-3-methylimidazolium acetate [EMIM]oAc was selected as the most suitable IL for SCB pretreatment. The optimum yields of reducing sugar obtained from [EMIM]oAc-, alkali-, and acid-pretreated SCB were 69.5%, 92.8% and 41.3%, respectively. Although a lower yield of reducing sugar was obtained, [EMIM]oAc pretreatment required the least energy to pretreat 1 kg of SCB. Moreover, the percentage of SCB loss during [EMIM]oAc pretreatment was the lowest. [EMIM]oAc-pretreated SCB also had the lowest crystallinity index (CI) with the most amorphous structure. Conclusion: [EMIM]oAc appears to be another option for pretreating SCB, and other issues such as the recyclability of [EMIM]oAc is worth investigating. © 2011 Society of Chemical Industry.
format Article
author Yoon, Li Wan
Ngoh, Gek Cheng
Chua, Adeline Seak May
Hashim, Mohd Ali
author_facet Yoon, Li Wan
Ngoh, Gek Cheng
Chua, Adeline Seak May
Hashim, Mohd Ali
author_sort Yoon, Li Wan
title Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification
title_short Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification
title_full Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification
title_fullStr Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification
title_full_unstemmed Comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification
title_sort comparison of ionic liquid, acid and alkali pretreatments for sugarcane bagasse enzymatic saccharification
publisher Wiley
publishDate 2011
url http://eprints.um.edu.my/789/
https://doi.org/10.1002/jctb.2651
_version_ 1651867313728651264
score 13.211869

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