| HDTMA改性粘土对模拟地下水中苯系物的吸附 |
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| 引用本文： | 李万山,高斌,冯建坊,王晓蓉.HDTMA改性粘土对模拟地下水中苯系物的吸附[J].中国环境科学,1999,19(3):0-0. |
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| 作者姓名： | 李万山 高斌 冯建坊 王晓蓉 |
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| 作者单位： | 南京大学环境科学与工程系,污染控制与资源化研究国家重点实验室，江苏南京;210093 |
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| 基金项目： | 国家自然科学基金!29777014，江苏省环保局资助!9710 |
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| 摘 要： | 以季铵盐（QAC）阳离子表面活性剂十交烷基三甲基铵离子（HDTMA）改性膨润土和凹凸棒土，研究它们对模拟地下水中的苯、甲苯、二甲苯的吸附作用.结果表明，两种HDTMA改性粘土矿物的有机质含量分别提高了54．8和404.5倍，它们可以有效地吸附模拟地下水中的苯系物，吸附量比原粘土矿物高出几十全几百倍对苯、甲苯、二甲苯来说，改性凹凸棒土和膨润士的吸附系数分别是原土的79.5和289倍、106和334倍、418和578倍吸附机理较复杂，主要以分配为主.
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| 关 键 词： | HDTMA改性粘土 阳离子表面活性剂 吸附 分配 |
| 收稿时间： | 1900-01-01; |
Sorption of benzene
homologues in simulated groundwater
by HDTMA modified clays. |
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| LI Wan-shan,GAO Bin,FENG Jian-fang, WANG Xiao-rong.Sorption of benzene
homologues in simulated groundwater
by HDTMA modified clays.[J].China Environmental Science,1999,19(3):0-0. |
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| Authors: | LI Wan-shan GAO Bin FENG Jian-fang WANG Xiao-rong |
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| Abstract: | Moditying bentomite and attapulgite with a quaternary ammonium compound(QAC) hexadecyltrimethylam-monium (HDTMA) have been done. The sorption of benzene. tuluene and xylene in simulated groundwater by HDTMAmodified clays has been studied. The organic matter (OM) contents of two kinds of modified clays have been enhanced54.8 and 404.5 times respectively. Moditied clays have good sorption effects sorption amount of modified ones is abouttens to hundreds times higher than the original oiles.TO benzene, tuluene and xylene, sorption coefficients of modifiedattapulgite and bentonite are 79.5 and 289.106 and 334.418 and 578 times than the original ones respectively.Sorptionmechanism are complex. but partition is the predominant. |
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| Keywords: | HDTMA modified clays cationic surfactant sorption partition |
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