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中文摘要：
研究了人工海水介质中，阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）在胶州湾沉积物上的吸附动力学和热力学行为。结果表明：沉积物对CTAB的吸附动力学过程可以用伪二级模型进行较好的描述，拟合所得吸附速率常数k2随CTAB的初始浓度和温度的升高而增大。CTAB在沉积物上的吸附等温线可用Freundlich等温式来描述，而蒸馏水介质中，CTAB的吸附表现出两段特征。沉积物的吸附能力随着介质离子强度的增加而增大。计算得到的吸附活化能E以及热力学参数△H0、△S0和△G0表明CTAB在海洋沉积物上的吸附为物理吸附，是一个自发、放热、熵增加的过程。
英文摘要：
The kinetic and thermodynamic sorption behaviors of CTAB on Jiazhou Bay sediment from artificial seawater were investigated.The results showed that the sorption kinetics could be described by the pseudo-second-order model.The uptake rate constants（k2）increased with increasing initial CTAB concentration and temperature.The isotherm followed Freundlich isotherm model well,while in distilled water medium,it exhibited two distinct regions.High salinity was found to be favorable for the sorption.Active energy（Ea）and thermodynamic parameters（？？H0,？？G0 and ？？S0）showed that the sorption was a physical process and was spontaneous and exothermic,the process of entropy increased.
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