Kinetics of phenanthrene desorption from activated carbons to water

被引：13
|
作者：
Morelis, Simone [1 ]
van Noort, Paul C. M. [1 ]
机构：
[1] Deltares, NL-3508 AL Utrecht, Netherlands
来源：
CHEMOSPHERE | 2008年 / 71卷 / 11期
关键词：
desorption rate constant; sediment; black carbon; Tenax;
D O I：
10.1016/j.chemosphere.2008.01.048
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
We determined the kinetics of phenanthrene desorption from three activated carbons to water using Tenax beads as an infinite sink for organic compounds in water. Desorption kinetic data very well fitted a biphasic kinetic model based on the presence of two different adsorption sites, viz. low-energy sites and high-energy sites. Rate constants for desorption to water from these two types of sites in the three activated carbons did not reveal a relation with activated carbon grain size. These rate constants were comparable to those for desorption of various organic compounds from hard carbon in various sediments. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2044 / 2049
页数：6
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