Effects of acid and alkali promoters on organosolv fractionation of sugarcane bagasse using ternary solvent system
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Publication Details
Author list: Suriyachai N., Laosiripojana N., Champreda V.
Publisher: Hindawi
Publication year: 2017
Start page: 1
End page: 4
Number of pages: 4
ISBN: 9781509063390
ISSN: 0146-9428
eISSN: 1745-4557
Languages: English-Great Britain (EN-GB)
Abstract
Lignocellulosic plant biomass is a renewable starting material for sustainable production of fuels, chemicals, and materials with advantages on its carbon-neutral nature. Fractionation of lignocellulosic components is a pre-requisite in an integrated biorefinery process in order to convert the cellulose, hemicellulose, and lignin to respective products with maximized economics. In this study, a modified clean fractionation (CF) process using the mixture of ethyl acetate/ethanol/water was studied with the use of acid and alkali promoters at varying temperatures. H2SO4 was found to be the most efficient promoter compared to other acids/alkali the same molarity on yield and homogeneity of the fractionated products. The optimal fractionation conditions operated in the solvent mixture containing 0.025 M H2SO4 at 160ฐC for 60 min led to 88.79% recovery of the cellulose in the solid pulp while 86.2% and 68.3% of hemicellulose-derived products and lignin were recovered in the aqueous-alcohol and organic fractions, respectively. However, the use of triethylamine (TEA) led to the higher biomass digestibility and glucose recovery of 74.76 and 65.27, respectively at 180ฐC which higher than those achieved using H2SO4. The work demonstrated the applicability of the modified CF process for fractionation of lignocellulose components for integrated biorefinery process. ฉ 2017 IEEE.
Keywords
acid/alkali promoters, clean fractionation
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