Pre-treatment of lignocellulosic biomass using ionic liquids: wheat straw fractionation

Lopes, André; João, Karen; Rubik, Djonatam; Bogel-Lukasik, Ewa; Duarte, Luís C.; Andreaus, Jurgen; Lukasik, Rafal M.

http://hdl.handle.net/10400.9/2324

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Abstract(s)

This work is devoted to study pre-treatment methodologies of wheat straw with 1-ethyl-3-methylimidazolium acetate ([emim][CH3COO]) and subsequent fractionation to cellulose, hemicellulose and lignin. The method developed and described here allows the separation into high purity carbohydrate and lignin fractions and permits an efficient IL recovery. A versatility of the established method was confirmed by the IL reuse. The fractionation of completely dissolved biomass led to cellulose-rich and hemicellulose-rich fractions. A high purity lignin was also achieved. To verify the potential further applicability of the obtained carbohydrate-rich fractions, and to evaluate the pre-treatment efficiency, the cellulose fraction resulting from the treatment with [emim][CH3COO] was subjected to enzymatic hydrolysis. Results showed a very high digestibility of the cellulose samples and confirmed a high glucose yield for the optimized pre-treatment methodology.

Keywords

Ionic liquids Lignocellulosic biomass Pre-treatment Fractionation Cellulose Hemicellulose Lignin

URI

http://hdl.handle.net/10400.9/2324

Citation

Lopes, André M. da Costa; João, Karen G.; Rubik, Djonatam F.; Bogel-Lukasik, E.; Duarte, Luís C.; Andreaus, J.; Bogel-Lukasik, R. Pre-treatment of lignocellulosic biomass using ionic liquids: wheat straw fractionation. In: Bioresource Technology, 2013, Vol. 142, p. 198-208