Synthesis of cross-linking cationic starch and its adsorption properties for reactive dyes

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Guo, Jing^1 ; Wang, Jiankun^1 ; Zheng, Guo^1

School of Textile Science and Engineering, Tianjin Polytechnic University, Tianjin

300387, China^1

关键词: Adsorption behavior;    Adsorption capacities;    Adsorption kinetics;    Adsorption properties;    Adsorption thermodynamics;    Cross linking agents;    Fourier transform infrared spectrum(FTIR);    Pseudo-second order model;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/6/062034/pdf
DOI  :  10.1088/1755-1315/227/6/062034

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In the presence of alkaline catalyst NaOH, natural polymer polysaccharide based cross-linking cationic starch (CCSt), the adsorbent for reactive dye, was synthesized by corn starch as raw material, 30% trimethylamine solution as cross-linking agent and 3-chloro-2-hydroxypropyltrimethyl ammonium chloride as cationic agent. Structure of the product confirmed by Fourier transform infrared spectrum (FTIR), X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) indicated that the cationic groups were successfully introduced into corn starch. The adsorption properties for reactive dyes by CCSt were investigated in terms of adsorption kinetics, adsorption isotherms and adsorption thermodynamics. Adsorption behavior of CCSt on reactive dyes fitted pseudo-second-order model and Langmuir isotherm, and the adsorption process was endothermic. CCSt with favorable adsorption capacity for reactive dyes was expected to be an ideal substitute for inorganic adsorbent and synthetic resin adsorbent applied in the treatment of industrial dye wastewater.