化工学报2016，Vol.5Issue(5)：2093-2100,8.DOI:10.11949/j.issn.0438-1157.20151319
MIEX对水中DBP的去除效果及机理分析
Removal of di-n-butyl phthalate from aqueous solution by MIEX
摘要
Abstract
Di-n-butyl phthalate (DBP) is one of endocrine disrupting chemicals (EDCs), which is commonly found in aquatic environment. In this study, DBP removal by magnetic ion exchange resin (MIEX) was investigated with respect to kinetics, isotherms, charge density analysis, Fourier transform infrared spectroscopy (FT-IR) analysis, X-ray photoelectron spectroscopy (XPS) as well as the effect of accompanying components. The removal of DBP was stable after 20 min, and pseudo-second kinetic model could well depict the removal process. In neutral pH soultion, the maxium uptake capacity of DBP by MIEX was around 0.944 mg·g?1. Since the charge density of DBP was only 2.7×10?3 mmol·mmol?1 at neutral pH, the removal of DBP by MIEX was mainly based on the hydrophobic interaction and hydrogen bonding between MIEX matrix and DBP, instead of ion exchange. High concentrations of accompanying24SO? and Cl? did not affect the DBP removal. The presence of humic acid (HA) slightly decreased the DBP removal; however, the HA removal by MIEX was not affected at all. As an emerging novel technology for the removal of natural organic matters, MIEX can also remove DBP from aqueous solution. Therefore, it canbe applied for drinking water treatment when surface water with complex micropollutants was used as the source.关键词
邻苯二甲酸二丁酯/磁性离子交换树脂/腐殖酸/吸附Key words
dibutyl phthalate/magnetic ion exchange resin/humic acid/adsorption分类
资源环境引用本文复制引用
王亮,马树双,赵斌,李君敬,张朝晖,郭幸斐,曹宏杰..MIEX对水中DBP的去除效果及机理分析[J].化工学报,2016,5(5):2093-2100,8.基金项目
国家自然科学基金项目(51478314, 51138008, 21206125, 51308391, 51308390) （51478314, 51138008, 21206125, 51308391, 51308390）
天津市科技计划项目(14ZCDGSF00128, 14JCQNJC09000).supported by the National Natural Science Foundation of China (51478314, 51138008, 21206125, 51308391, 51308390) and Tianjin Science and Technology Projects (14ZCDGSF00128, 14JCQNJC09000). （14ZCDGSF00128, 14JCQNJC09000）
