Adsorption behaviors of volatile organic compounds (VOCs) on porous clay heterostructures (PCH)

被引：184

作者：

Qu, Fang ^{[1
]}

Zhu, Lizhong ^{[1
]}

Yang, Kun ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Environm Sci, Hangzhou 310028, Zhejiang, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 170卷 / 01期

基金：

国家高技术研究发展计划(863计划);

关键词：

Porous clay heterostructures (PCHs); Volatile organic compounds (VOCs); Adsorption; Multiple linear regression (MLR); ACTIVATED CARBON; ACID CATALYSTS; GAS STREAMS; INDOOR AIR; REMOVAL; ENERGIES; TOLUENE; RISK; BED;

D O I：

10.1016/j.jhazmat.2009.05.027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Porous clay heterostructures (PCHs) are capable of adsorbing volatile organic compounds (VOCs). In this study, PCH was synthesized by modifying bentonite (Bent) with cetyltrimethylammonium bromide (CTMAB) and clodecylamine (DDA). Adsorption of six volatile organic compounds (VOCs) including acetone, toluene, ethylbenzene, o-xylene, m-xylene and p-xylene by PCH was investigated. It was observed that adsorption capacities of VOCs were strongly dependent on their properties including cross-sectional area, polarizability, enthalpy of vaporization and critical volume by the multiple linear regression (MLR) approach. Furthermore, PCH had higher adsorption affinity for the aliphatic hydrocarbon compound (acetone) than that for aromatic compounds, which could be attributed to the HOMO energy effects of VOCs. Therefore, PCH could be attractive candidate adsorbents for VOC removal. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：7 / 12

页数：6

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