Original scientific paper

https://doi.org/10.15255/KUI.2016.032

Research on Wheat Straw Pulping with Ionic Liquid 1-Ethyl-3-Methylimidazole Bromide

Wei Song ; Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems, Tianjin University of Technology, Tianjin, 300 384, Kina
Yu Deng ; Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science &Technology, Tianjin, 300 457, Kina
Hong Zhu ; Institute of Biology and Environment Engineering, Tianjin Vocational Institute, Tianjin, 300 410, Kina

Abstract

In this paper, the pulping process of wheat straw using ionic liquid 1-ethyl-3-methylimidazolium bromide ([Emim]Br) as the digestion liquor is presented. The influence of pulping conditions on the pulp yield are analysed by single-factor and orthogonal experiments, and optimum pulping conditions are obtained. The average pulp yield reaches 44 %, and the average recovery rate of ionic liquid is 93.5 %. The XRD pattern shows no obvious change in the crystal structure of the wheat straw cellulose. Additionally, the SEM image illustrates that there are many fine fibres in the pulp and the spaces between the fibres are large.

Keywords

pulping process; pulp yield; ionic liquid; recovery rate; wheat straw

Hrčak ID:

169055

URI

https://hrcak.srce.hr/169055

Publication date:

8.12.2016.

Article data in other languages: croatian

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