【摘要】 通过吸附动力学研究了不溶性腐殖酸吸附水中对硝基苯胺的机理。探讨了离子强度、共存有机物对对硝基苯胺的吸附行为的影响。结果表明,不溶性腐殖酸吸附对硝基苯胺的动力学曲线符合Elovich方程;吸附速率随对硝基苯胺初始浓度的增加而增加;吸附过程可用双速率扩散理论来解释;离子强度对对硝基苯胺的吸附影响不大,但共存有机物与对硝基苯胺存在竞争吸附。更多还原

【Abstract】 The mechanism of p-nitroaniline adsorption on insolubilized humic acid in water was studied by the theory of adsorption kinetics.The effect of ionic strength and the coexisting organic compounds on adsorption of p-nitroaniline were also investigated.It was found that the kinetic adsorption of p-nitroaniline on insolubilized humic acid could be described by Elovinch equation.The rate of adsorption of p-nitroaniline on insolubilized humic acid increased with the initial concentration of p-nitroaniline increasing.The mechanism of p-nitroaniline adsorption could be interpreted with the dual-rate diffusive model.Furthermore,it was showed that the ionic strength had little effects on the adsorptive capacity;but with the addition of coexisting organic compounds,the adsorptive capacity of p-nitroaniline on insolubilized humic acid decreased.更多还原