Perchlorate Adsorption by Granular Activated Carbon Modified with Cetyltrimethyl Ammonium Chloride

被引：0
|
作者：
Peng Yin-Xian [1 ]
Zheng Lu [1 ]
Cai Cui-Yun [1 ]
Zhu Ming-Long [1 ]
Zhou Yang [1 ]
Wu Chun-Du [2 ]
机构：
[1] Jiangsu Univ Sci & Technol, Sch Biol & Chem Engn, Hangzhou 212003, Zhejiang, Peoples R China
[2] Jiangsu Univ, Sch Environm, Hangzhou 212003, Zhejiang, Peoples R China
来源：
JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN | 2012年 / 34卷 / 04期
关键词：
OXIDATION TREATMENTS; REMOVAL; WATER; GROUNDWATER; FTIR; IONS; GAC;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
To improve the adsorption of perchlorate (CIO4-) in contaminated water, granular activated carbon (GAC) was modified with cetyltrimethyl ammonium chloride (CTAC). To investigate the adsorption mechanism of perchlorate the structure of GAC-CTAC was characterized by scanning electron microscopy (SEM) and FTIR spectroscopy. Then the GAC-CTAC was used for the adsorption of perchlorate in water. The effects of the adsorption time, p1-1, initial CIO4- concentration, and co-existed anions on perchlorate adsorbed by GAC-CTAC were studied. The results show that the GAC-CTAC could absorb perchlorate better in water. The adsorption capacity of perchlorate on GAC-CTAC decreases in the alkaline solution, and increases with increasing the initial concentration. The competitive adsorption exists between co-existed anions and CIO4- on GAC-CTAC. In addition, adsorption of CIO4- on GAC-CTAC fits the Langmuir, Freundlich and Tempkin isothermal models in the range of the experimental concentration. The adsorption process follows pseudo-second order kinetics.
引用
收藏
页码：819 / 825
页数：7
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