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首页> 外文期刊>Colloids and Surfaces, A. Physicochemical and Engineering Aspects >The effect of sorbent concentration on the partition coefficient of pollutants between aqueous and particulate phases
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The effect of sorbent concentration on the partition coefficient of pollutants between aqueous and particulate phases

机译：吸附剂浓度对污染物在水相和颗粒相之间分配系数的影响

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During studying the distribution of pollutants between the aqueous and particulate phases, an anomalous C _s-effect phenomenon, namely, the experimentally measured partition coefficient (K _p) value of a given system decreased with increasing the sorbent concentration (C _s), was observed in a number of adsorption systems. Classical Langmuir model cannot predict the C _s-effect. In this paper, a surface component activity (SCA) model was proposed, which suggests that surface component (adsorption site or adsorbed solute) activity coefficient is a function of C _s because of the existence of adsorbent particle-particle interactions. A semi-empirical C _s-dependent function of partition coefficient was derived, and it can predict the C _s-dependence of partition coefficient for both organic compounds and heavy metals.
机译：在研究水相和颗粒相之间的污染物分布时，观察到异常的C _s效应现象，即实验测量的给定系统的分配系数（K _p）值随着吸附剂浓度（C s）的增加而降低。在许多吸附系统中。经典的朗缪尔模型无法预测C_s效应。本文提出了一种表面组分活性（SCA）模型，该模型表明表面组分（吸附位点或吸附的溶质）活性系数是C s的函数，因为存在吸附剂-颗粒间的相互作用。得出了分配系数的半经验C _s依赖性函数，它可以预测有机化合物和重金属的分配系数的C s依赖性。

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