Removal of acid and direct dye by epichlorohydrin-dimethylamine: Flocculation performance and floc aggregation properties
Removal of acid and direct dye by epichlorohydrin-dimethylamine: Flocculation performance and floc aggregation properties
复制标题
环氧氯丙烷-二甲胺去除酸性和直接染料：絮凝性能和絮凝聚集性能
DOI：
10.1016/j.biortech.2011.11.106
复制
发表时间：
2012-06-01
影响因子：
11.4
通讯作者：
Yang, Zhong-Lian
中科院分区：
文献类型：
--
作者：
Wang, Yuan-Fang;Gao, Bao-Yu;Yang, Zhong-Lian
采用阳离子有机絮凝剂环氧氯丙烷-二甲胺（EPI-DMA）处理酸性染料和直接染料。研究了EPI-DMA对模型染料的絮凝性能，并通过烧杯实验和光度分散分析法测定了其絮体的聚集特性。通过光谱分析研究了阳离子絮凝剂与阴离子染料的相互作用。结果表明，EPI-DMA对酸性染料和直接染料均有较好的脱色效果。粘度和阳离子度对不同染料的去除效果有不同的影响。EPI-DMA的季铵盐与染料的磺酸基之间存在化学相互作用。絮凝动力学过程表明，EPI-DMA对酸性染料具有较高的粘度和阳离子性，其絮体具有较好的聚集和沉降性能。EPI-DMA絮凝剂的絮凝效果最好，絮凝剂的粘度和阳离子度最低。(C)2011爱思唯尔有限公司保留所有权利。
A cationic organic flocculant epichlorohydrin-dimethylamine (EPI-DMA) was employed for the treatment of acid and direct dye. The study aims at investigating the flocculation performance of EPI-DMA for the model dye, and corresponding floc aggregation properties, which were determined by jar test and photometric dispersion analysis, respectively. The interactions between cationic flocculant and anionic dye were investigated through spectra analysis. The results showed that EPI-DMA effectively decolorized the tested acid and direct dye. The viscosity and cationicity of EPI-DMA had different influence on the removal of different dye. Chemical interaction was observed between quaternary ammonium of EPI-DMA and sulfonic group of dye. The flocculation dynamic process showed that flocs with better aggregation and sedimentation properties were produced by EPI-DMA with higher viscosity and cationicity for acid dye. Contrarily, flocs with the best aggregation and sedimentation properties were produced by EPI-DMA with the lowest viscosity and cationicity for direct dye. (C) 2011 Elsevier Ltd. All rights reserved.