Adsorption Characteristics of Bisphenol A from Aqueous Solution onto HDTMAB-Modified Palygorskite

被引：22
作者：
Zhao, Zilong [1 ]
Fu, Dafang [1 ]
Ma, Quanhong [2 ]
机构：
[1] Southeast Univ, Dept Municipal Engn, Nanjing, Jiangsu, Peoples R China
[2] Southeast Univ, Dept Chem Engn, Nanjing, Jiangsu, Peoples R China
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2014年 / 49卷 / 01期
关键词：
adsorption; Bisphenol A; modified palygorskite; ultrasonic; SELECTIVE ADSORPTION; HYBRID PARTICLES; SORPTION; REMOVAL; WATER; COMPOSITES; ZEOLITE; DYE;
D O I：
10.1080/01496395.2013.818693
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hexadecyl trimethylammonium bromide (HDTMAB)-modified palygorskite with ultrasonic treatment was synthesized, characterized, and examined as a potential adsorbent for removal of bisphenol A (BPA) from aqueous solution. Batch studies were carried out to evaluate various influencing factors. The adsorption mechanism in the BPA/modified-palygorskite system was best described by pseudo-second-order kinetics with a significant contribution of film diffusion. Equilibrium data was fitted perfectly with Langmuir isotherm model, and the maximum monolayer adsorption capacity was 219.30mgg(-1) at 303K. The adsorption process was exothermic, entropy decreased, and spontaneous in nature, and was driven by the collaboration of hydrophobic interaction, dipole-bonding, and hydrogen-bond interaction.
引用
收藏
页码：81 / 89
页数：9
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