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Vol. 25 No. 3 (2013): Vol 25 Issue 3

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Preparation of Aminolignin from Paper Mill Sludge and Its Discolouring Flocculant Performance

https://doi.org/10.14233/ajchem.2013.12879
Ling Jiang
Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China
Shumian Li
Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China
Xiaofeng Li
Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China
Zhancai Li
Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China
Xiaojie Wang
Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China

Corresponding Author(s) : Xiaofeng Li

lixiaofeng@zzuli.edu.cn

Asian Journal of Chemistry, Vol. 25 No. 3 (2013): Vol 25 Issue 3

Abstract

Lignin was extracted from paper mill sludge by the process of alkali dissolving and acid precipitating. Then a new kind of aminolignin discolouring flocculant was prepared with the lignin and dimethylamine epoxypropylamine (named as epoxy amimes monomer) as the raw materials and NaOH as the catalyst. The influencing factors such as the ratio of reactants, activation time, reaction temperature and reaction time on the preparation of aminolignin were investigated so as to optimize the reaction conditions. The products were characterized by using Fourier transform infrared spectroscopy. The possibility of aminolignin as a flocculant was examined by using simulated waste water of several dyes and the results show that it has a satisfactory decolourizing ability, which can afford a new method of effectively utilizing lignin and tackling paper mill sludge.

Keywords

Paper mill sludge Aminolignin Discolouring flocculant
Jiang, L., Li, S., Li, X., Li, Z., & Wang, X. (2012). Preparation of Aminolignin from Paper Mill Sludge and Its Discolouring Flocculant Performance. Asian Journal of Chemistry, 25(3), 1279–1284. https://doi.org/10.14233/ajchem.2013.12879
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