Adsorptive removal of p-arsanilic acid from water using mesoporous zeolitic imidazolate framework-8

被引：174
作者：
Jung, Beorn K.
Jun, Jong Won
Hasan, Zubair
Jhung, Sung Hwa [1 ]
机构：
[1] Kyungpook Natl Univ, Dept Chem, Daegu 702701, South Korea
来源：
CHEMICAL ENGINEERING JOURNAL | 2015年 / 267卷
基金：
新加坡国家研究基金会;
关键词：
Adsorption; p-Arsanilic acid; Mesoporosity; Removal; Zeolitic imidazolate frameworks; METAL-ORGANIC FRAMEWORKS; CHROMIUM TEREPHTHALATE MIL-101; AQUEOUS-SOLUTIONS; ORGANOARSENIC COMPOUNDS; CLOFIBRIC ACID; BISPHENOL-A; MODEL FUELS; IRON; MOFS; DENITROGENATION;
D O I：
10.1016/j.cej.2014.12.093
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The adsorptive removal of p-arsanilic acid (ASA) from water using zeolitic imidazolate framework-8 (ZIF-8) materials was investigated for the first time. The adsorption kinetics and adsorbed amount of ASA were improved by introducing mesoporosity into the pristine ZIF-8 structure. The high adsorption capacity of mesoporous ZIF-8 for ASA and facile regeneration of the used adsorbent show that mesoporous ZIF-8 has potential applications in the adsorptive removal of organoarsenic compounds such as ASA. Based on the adsorption results at various pH values and the surface charges on ZIF-8s, the adsorption mechanism of ASA on ZIF-8s can be explained by electrostatic interactions between the positively charged ZIF-8 surface and the anionic forms of ASA. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：9 / 15
页数：7
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