Thermodynamics and Kinetics of the Adsorption for Phenanthrene onto CTMA-bentonite in Aqueous Solutions

被引：3
|
作者：
Ren Jian Min [1 ]
机构：
[1] Chongqing Technol & Business Univ, Environm & Biol Sch, Chongqing 400067, Peoples R China
来源：
FUNDAMENTAL OF CHEMICAL ENGINEERING, PTS 1-3 | 2011年 / 233-235卷
关键词：
CTMA; Adsorption; Phenanthrene; PHOSPHATE; WATER;
D O I：
10.4028/www.scientific.net/AMR.233-235.1089
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The adsorption thermodynamic and kinetic parameters of phenanthrene onto CTMA-bentonite were studied. The result shows that adsorption equilibrium time at their initial concentrations of 2 mg.L-1 and 6 mg.L-1 is 110 min. The dynamical data for the organoclay fit well with pseudo-second-order kinetic model at 303-333 K. The adsorption rates was found higher with the temperature increased, but its sorption extent was lower. Thermodynamic parameters such as Delta G(0), Delta H-0, Delta S-0 were also evaluated. The overall adsorption process was spontaneous, exothermic physisorption. The isotherms for phenanthrene on the organoclay are linear and showed that partitioning was the dominant mechanism of phenanthrene on CTMA-bentonite.
引用
收藏
页码：1089 / 1092
页数：4
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