Correlations of nonlinear sorption of organic solutes with soil/sediment physicochemical properties

Chemosphere
Kun YangBaoliang Chen

Abstract

The estimation of solute sorptive behaviors is essential when direct sorption data are unavailable and will provide a convenient way to assess the fate and the biological activity of organic solutes in soil/sediment environments. In this study, the sorption of 2,4-dichlorophenol (2,4-DCP) on 19 soil/sediment samples and the sorption of 13 organic solutes on one sediment were investigated. All sorption isotherms are nonlinear and can be described satisfactorily by a simple dual-mode model (DMM): q(e)=KpCe+Q0 . bCe/(1+bCe), where Kp (mlg(-1)) is the partition coefficient; Ce (microgml(-1)) is the equilibrium concentration; Q0 (microgg(-1)) is the maximum adsorption capacity; Q0 . b (mlg(-1)) is the Langmuir-type isotherm slope in the low concentration (Henry's law) range and b (mlmicrog(-1)) is a constant related to the affinity of the surface for the solute. Based on these nonlinear sorption isotherms and similar other nonlinear isotherms, it is observed that, for both polar 2,4-DCP and nonpolar phenanthrene, Kp, Q0 and Q0 . b are linearly correlated with soil/sediment organic carbon content (f(oc) in the range of 0.118-53.7%). The results indicate that the nonlinear sorption of organic solutes results primarily from interaction...Continue Reading

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Citations

May 27, 2009·Environmental Science and Pollution Research International·Kun YangBaoshan Xing
Jun 27, 2013·Cell Biochemistry and Biophysics·Vijayan ManoharanC H Anjali
Jul 27, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Mevlut BayrakciEsra Maltas
Jul 6, 2014·Chemosphere·Yanjie LiQian Zhang
Jan 7, 2015·Environmental Science and Pollution Research International·Kun YangDaohui Lin
Sep 30, 2010·Journal of Hazardous Materials·Jinghuan Zhang, Mengchang He
Jun 30, 2009·Journal of Colloid and Interface Science·Jinghuan Zhang, Mengchang He
Feb 26, 2010·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Virender K Sharma
Nov 1, 2020·The Science of the Total Environment·Liufen RenKun Yang
Nov 27, 2008·Environmental Science & Technology·Kun YangLizhong Zhu
Aug 27, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Kun YangBaoshan Xing
Apr 17, 2009·Environmental Science & Technology·Kun Yang, Baoshan Xing
Aug 18, 2020·Ecotoxicology and Environmental Safety·Mengjie WuHongyu Liu

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