Research of adsorption behavior for phenol in water on DTAC-modified-attapulgite via ultrasonic method
Guo Wenjun1, Li Jin1, Wang Wenhao2, Zhang Chi1, Zhang Feng1, Zhang Jilong3, Gao Lili1
1.College of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030024; 2.Bachelor of Commerce,University of Sydney,Sydney 2006; 3.College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024
Abstract: Dodecyl trimethyl ammonium chloride (DTAC) modified attapulgite was prepared via ultrasonic agitation method,and the adsorption behavior of DTAC-attapulgite for phenol in water was discussed.As comparison,mechanical mixing method was investigated as well.The ultrasonic time and dosage ratio of DTAC/attapulgite were also optimized by orthogonal experiment,which were 9min and 40mmol/100g respectively.The results showed that the adsorption capacity of DTAC-attapulgite could be improved twelve times compared with the natural attapulgite.The adsorption process was proved to be a fast process,and the adsorption capacity could reach 80% of maximum adsorption capacity within 5 minutes.Besides,the adsorption process could be well described by the pseudo-second order kinetic model (R2=0.9999).And Langmuir model was found to be applicable to the prediction of isothermal adsorption (R2>0.98),revealing the adsorption was monolayer.The thermodynamic experimental results showed that the adsorption was a spontaneous,exothermic and entropy-reduction process.
郭文君, 李晋, 王文浩, 张弛, 张峰, 张继龙, 高丽丽. 超声法十二烷基三甲基氯化铵改性凹凸棒土对水中苯酚的吸附行为研究[J]. 化工新型材料, 2018, 46(4): 126-130.
Guo Wenjun, Li Jin, Wang Wenhao, Zhang Chi, Zhang Feng, Zhang Jilong, Gao Lili. Research of adsorption behavior for phenol in water on DTAC-modified-attapulgite via ultrasonic method. New Chemical Materials, 2018, 46(4): 126-130.
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