Kinetic model of contaminant transport in soil-water system considering two-site absorption-desorption

ZHAO Ying; LIANG Bing; XUE Qiang; LIU Lei; WANG Yong-bo

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Kinetic model of contaminant transport in soil-water system considering two-site absorption-desorption

更新时间：2026-06-25

- Kinetic model of contaminant transport in soil-water system considering two-site absorption-desorption
- Vol. 28, Issue 12, (2007)
- 作者机构：
  
  1. 辽宁工程技术大学力学与工程科学系,阜新,123000
  2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：18 October 2013，
  
  Published：2007
- 稿件说明：
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ZHAO Ying, LIANG Bing, XUE Qiang, et al. Kinetic model of contaminant transport in soil-water system considering two-site absorption-desorption[J]. 2007, 28(12).
DOI：

ZHAO Ying, LIANG Bing, XUE Qiang, et al. Kinetic model of contaminant transport in soil-water system considering two-site absorption-desorption[J]. 2007, 28(12). DOI：

摘要

在考虑对流弥散、平衡/非平衡双点吸附解吸、微生物降解等情况下，建立了土壤环境中有机污染物迁移转化的动力学模型，并给出了有限差分解。在此模型的基础上，详细讨论了有机污染物在土壤中的分布规律，并对一阶吸附解吸速率常数和平衡吸附点位所占总点位的比例进行了灵敏度分析。分析研究表明：参数对于土壤中有机污染物浓度分布有着重要的影响，其影响程度又与非平衡吸附点位所占总点位的比例（1- ）有关；污染后期土壤吸附相的存在，也会起到增加土壤水溶质浓度的作用，且越大，这种作用越明显。

Abstract

Considering the environment behaviors of contaminant in soil

such as diffusion

equilibrium/nonequilibrium two-site absorption-desorption and microbiological degradation

the kinetic model of the contaminants transport in soil is established; and its finite difference equation is given. Based on it

the distribution regularities of the contaminant concentration in soil are discussed in detail; and the sensitivities of parameters and are analyzed. The study shows that the parameter has important influence on the concentration distribution in soil and the influence degree is also related to the proportion (1- ) of nonequilibrium sites to total sites; At the later stage of pollution

the existence of absorption phase may increases the solute concentration in the water in soil; and the lager is

the more obvious is the influence.

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