Removal Characteristics of Tanic Acid Adsorbed on MIEX Resin

被引：5

作者：

Ding, Lei ^{[1
]}

Zhu, Yunhua ^{[1
]}

Du, Bin ^{[1
]}

Ma, Jiangya ^{[1
]}

Zhang, Xinxi ^{[1
]}

机构：

[1] Anhui Univ Technol, Sch Civil Engn & Architecture, 59 Hudong Rd, Maanshan 243002, Peoples R China

来源：

POLISH JOURNAL OF ENVIRONMENTAL STUDIES | 2017年 / 26卷 / 03期

基金：

中国国家自然科学基金;

关键词：

MIEX resin; tannic acid; equilibrium; kinetics; thermodynamics; DISINFECTION BY-PRODUCT; ION-EXCHANGE MIEX(R); TANNIC-ACID; AQUEOUS-SOLUTIONS; ACTIVATED CARBON; ORGANIC-MATTER; ADSORPTIVE CHARACTERISTICS; ARSENATE ADSORPTION; PILOT-SCALE; KINETICS;

D O I：

10.15244/pjoes/65354

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study evaluated the removal characteristics of tanic acid (TA) adsorbed on MIEX resin by batch experiments. MIEX resin can effectively remove TA from raw water at pH 6-9. Chloride and sulfate have adverse effect on the removal of TA. Conversely, bicarbonate can further the removal of TA. The Elovich model is the most suitable for depicting the kinetic process, and liquid film diffusion dominates the adsorption rate. The Freundlich model is reliable for describing the adsorption equilibrium. Adsorption is an endothermic, entropy-driving, and thermodynamically spontaneous process. The energy changes confirm the physical adsorption and dominate adsorption behavior. The sodium chloride solution (0.5%) can effectively regenerate the MIEX resin saturated TA, and the regenerated resin can be used circularly. Therefore, MIEX resin is a promising adsorbent for the removal of TA from raw water.

引用

页码：1031 / 1043

页数：13

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