Micro- and nano-sized bentonite filled composite superabsorbents of chitosan and acrylic copolymer for removal of synthetic dyes from water

被引：56

作者：

Bhattacharyya, Ruma ^{[1
]}

Ray, Samit Kumar ^{[1
]}

机构：

[1] Univ Calcutta, Dept Polymer Sci & Technol, Kolkata 700009, India

来源：

APPLIED CLAY SCIENCE | 2014年 / 101卷

关键词：

Chitosan; Copolymer; Bentonite; Dye; Isotherms; Kinetics; AQUEOUS-SOLUTION; METHYLENE-BLUE; CATIONIC DYES; SWELLING BEHAVIOR; MALACHITE GREEN; ADSORPTION; HYDROGELS; KINETICS; NETWORK; ACID);

D O I：

10.1016/j.clay.2014.09.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bentonite clay, chitosan and acrylic copolymer gels have been separately reported for the adsorption of dyes. In the present work these three kinds of adsorbents were combined to make composite hydrogels. The hydrogels were characterized by FTIR, XRD, DTA-TGA and SEM. The swelling, diffusion and network parameters of the hydrogels were also evaluated. These composite hydrogels were used for the removal of malachite green and methyl violet dyes from water. The composite hydrogels showed high adsorption and removal% of both of these dyes. The mass transfer coefficient diffusion coefficient and thermodynamic parameters of the dye adsorption were also determined. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：510 / 520

页数：11

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