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Published in: Cellulose 15/2021

28-08-2021 | Original Research

Aerogels made from soybean stalk with various lignocellulose aggregating states for oil spill clean-up

Authors: Jinxiu Wu, Yong Dong, Mei Xu, Jianyu Xia, Zhulan Liu, Yunfeng Cao

Published in: Cellulose | Issue 15/2021

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Abstract

A series of promising aerogels for oil clean-up were successfully produced from soybean stalks by dissolving them in LiCl/DMSO and regenerating them in antisolvents. To improve their mechanical and adsorptive properties, partial delignification and concentration regulation were performed to adjust the aggregation state of lignocellulose in the aerogels. Appropriate delignification of soybean stalk could lead to great disentanglement of lignocellulose, which was beneficial for improving the mechanical strength, thermostability and porosity of the aerogels to acquire better oil adsorption performance (31.02 g/g for chloroform and 17.39 g/g for diesel). The aerogel with a lower concentration presented slightly worse mechanical properties but better adsorption for diesel (up to 20.64 g/g). A higher lignocellulose concentration endowed aerogels with prominent mechanical strength. Its storage modulus was up to 806.93 kPa. Through the adsorption kinetics analysis of all the aerogels, it was found that the pseudo-second-order kinetic model was more suitable to predict the adsorption behavior of lignocellulose aerogels in the oil.

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Metadata
Title
Aerogels made from soybean stalk with various lignocellulose aggregating states for oil spill clean-up
Authors
Jinxiu Wu
Yong Dong
Mei Xu
Jianyu Xia
Zhulan Liu
Yunfeng Cao
Publication date
28-08-2021
Publisher
Springer Netherlands
Published in
Cellulose / Issue 15/2021
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-04146-5

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