Preparation of SA-g-(PAA-co-PDMC) polyampholytic superabsorbent polymer and its application to the anionic dye adsorption removal from effluents

被引：76
作者：
Zhao Ying [1 ]
Chen Yu [1 ]
Zhao Jian [1 ]
Tong Zongrui [1 ]
Jin Shaohua [1 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2017年 / 188卷
关键词：
Sodium alginate; Graft copolymerization; Polyampholytic superabsorbent polymer; Anionic dye; Adsorption; AQUEOUS-SOLUTION; FOOD DYES; CATIONIC DYE; AZO DYES; HYDROGEL; EQUILIBRIUM; KINETICS; WATER; NANOCOMPOSITE; NETWORK;
D O I：
10.1016/j.seppur.2017.07.044
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A pH-responsive polyampholytic superabsorbent polymer (SAP), sodium alginate-g-(polyacrylic acid-co-polymethacryloxyethyltrimethyl ammonium chloride) (SA-g-(PAA-co-PDMC)), was prepared by the free radical-induced graft copolymerization. The structure of the SAP was characterized by FTIR, XRD and SEM. The synthesis conditions were optimized to achieve an SAP with the highest swelling ratio. The anionic dye adsorption properties of the achieved SAP were characterized using Food Yellow 3 (FY3) as a model dye. The effects of DMC amount and pH of the dye solution on the adsorption capacities were determined. The adsorption kinetics, isotherm, thermodynamics, desorption and reusability of the SAP were studied respectively. The maximum adsorption capacity and removal efficiency of SA-g-(PAA-coPDMC) SAP reached up to 654.87 mg/g and 98.23%, respectively, which are among the highest values of solid adsorbents in FY3 adsorption. Compared with the traditional polyanion SAPs, the SAP prepared in the present work can be expended to the simultaneous removal of both cationic and anionic dyes. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：329 / 340
页数：12
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