Contributions of adsorption and partition to the total sorption of organic compounds on the interface of water and dual-cation organobentonites(有机物在水/双阳离子有机膨润土界面的吸附贡献率研究)

SHENXue-you(沈学优); LUYing-ying(卢瑛莹); ZHULi-zhong(朱利中)

doi:zjup/1008-9497.2003.30.1.69-74

Zhejiang Daxue xuebao. Lixue ban (Jan 2003)

Contributions of adsorption and partition to the total sorption of organic compounds on the interface of water and dual-cation organobentonites(有机物在水/双阳离子有机膨润土界面的吸附贡献率研究)

SHENXue-you(沈学优),
LUYing-ying(卢瑛莹),
ZHULi-zhong(朱利中)

Affiliations

SHENXue-you(沈学优): Department of Environmental Science, Zhejiang University, Hangzhou 310028, China(浙江大学环境科学系，浙江杭州 310028)
LUYing-ying(卢瑛莹): Department of Environmental Science, Zhejiang University, Hangzhou 310028, China(浙江大学环境科学系，浙江杭州 310028)
ZHULi-zhong(朱利中): Department of Environmental Science, Zhejiang University, Hangzhou 310028, China(浙江大学环境科学系，浙江杭州 310028)

DOI
Journal volume & issue: Vol. 30, no. 1
pp. 69 – 74

Abstract

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在长、短碳链表面活性剂总量恒定条件下制备了一系列双阳离子有机膨润土,研究了其对水中苯胺、对硝基苯酚、2,4二氯酚的吸附行为;结果表明双阳离子有机膨润土对有机物的分配系数(Kd)与有机碳含量(foc)、辛醇水分配系数(lgKow)成线性正相关,与溶解度(lgS)成线性负相关.通过数学模拟,首次描述了表面吸附和分配作用两种吸附机制的相对贡献率和改性表面活性剂配比的关系;结果表明双阳离子有机膨润土对水中有机物两种吸附机制的主导地位与有机物本身性质有关,其主导作用发生变化的拐点与长碳链表面活性剂所占比重相关.

Published in Zhejiang Daxue xuebao. Lixue ban

ISSN: 1008-9497 (Print)
Publisher: Zhejiang University Press
Country of publisher: China
LCC subjects: Science: Mathematics: Instruments and machines: Electronic computers. Computer science; Science: Physics
Website: https://www.zjujournals.com/sci/EN/1008-9497/home.shtml

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