Synthesis of Alumina-Modified Cigarette Soot Carbon As an Adsorbent for Efficient Arsenate Removal
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- 作者：He Chen ; Jiaxing Li ; Xilin Wu ; Xiangke Wang
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2014
- 出版时间：October 15, 2014
- 年：2014
- 卷：53
- 期：41
- 页码：16051-16060
- 全文大小：525K
- ISSN：1520-5045
文摘
In this study, the alumina (Al2O3) modified cigarette soot carbon (CSC) (Al2O3/CSC) were fabricated via a simple one-step thermal method using CSC as template. The as-synthesized Al2O3/CSC were used as adsorbents for efficient arsenate (As(V)) elimination. Different weight ratios of Al2O3/CSC (Al2O3:CSC = 1:1, 2:1, and 3:1) were fabricated, and the corresponding As(V) removal performance revealed that the synthesized 2Al2O3/CSC (mass ratio) possessed the best separation property and the highest adsorption capacity. A natural groundwater sample collected from Togtoh county, Inner Mongolia (China), with an initial concentration of 233 渭g/L As(V) was applied to test the 2Al2O3/CSC application in actual groundwater purification. After processing with 2Al2O3/CSC, the As(V) concentration was reduced to 8.0 渭g/L, which met the quality standard of World Health Organization (WHO). A regeneration test indicated that the 2Al2O3/CSC could be reused for at least six times without significant decrease in the adsorption capacity. The as-synthesized 2Al2O3/CSC with the maximum removal capacity of 96.9 mg/g for As(V) would be a promising material for the efficient removal of As(V) from groundwater with high As(V) concentrations in actual applications.