活性炭对双溶质水溶液中痕量有机物的理想吸附

对活性炭吸附水中有机物的吸附等温线研究表明，由IAST理论推导的简化模型可更好地解释活性炭对存在一种主要溶质的双溶质体系中痕量溶质的理想吸附现象，并解释了Henry系数与主要溶质的平衡浓度之间不呈简单的反比关系这一现象。活性炭对含苯酚、苯胺溶液中的氯仿和四氯化碳的吸附实验结果与模型预测值相符。影响Henry系数的主要因素有单溶质溶液的Freundrich参数和主要溶质的平衡浓度。各参数的敏感度分析表明：单溶质溶液的Freundrich参数对活性炭吸附痕量有机物的影响要大于主要溶质的平衡浓度的影响。

Ideal adsorption of trace organics onto activated carbon in bisolute system

The study on adsorption isotherms of organics onto activated carbon showed that the simplified model derived from the Ideal Adsorbed Solution Theory (IAST) can satisfactorily explain the ideal adsorption on activated carbon of trace organics in bisolute system with a dominant component. The model also explains the fact that Henry coefficient is not simply in inverse proportion to the concentration of dominant solute. The experiment results about adsorption of chloroform and tetrachloromethane in bisolute system containing phenol and aniline onto granular activated carbon (GAC) agreed well with model prediction. The factors of Henry coefficient are Freundrich parameters of solute and the equilibrium concentration of dominant solute. Sensitivity analysis demonstrated that the Freundrich parameters had greater effect on Henry coefficient than the concentration of dominant solute.