Preparation of Activated Carbon Loaded with Ferric Oxide Hydrate and its Absorption for Arsenic

Abstract:

In this study granular activated carbon loaded with ferric oxide hydrate (Fe-AC) as arsenic adsorbent was prepared by impregnation method. The influence of the kinds of ferric salt solution, the concentration of ferric salt solution, impregnation time and curing temperature on its arsenic removal effect was investigated. The optimal preparation conditions of the adsorbent were determined. And its adsorption properties of arsenic in aqueous solution were studied by static adsorption experiments. Results showed that when the dipping solution is 1.0 mol/L of Fe (NO₃)₃, impregnation time is 16h and the curing temperature is 60°C, the arsenic adsorption effect of the prepared adsorbent is best. The pattern of adsorption of As (V) with Fe-AC prepared under optimal condition well fit the Langmuir adsorption model, the correlation coefficient R² is greater than 0.98, and the maximum adsorption capacity is up to 71.43 mg/g.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 735-740
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.735
• Online since: February 2014
• Authors: Yu Chen*, Zhe Guo
• Keywords: Adsorption Isotherm, Arsenic, Ferric Oxide Hydrate, Modified Activated Carbon

References

[1] B. A. Manning, S. Goldberg: Environ. Sci. Technol. Vol. 31 (1997), 2005-(2011).

[2] Xiaojuan Gao, Fan Wang, Qinian Wang: Industrial Water Treatment, Vol. 32 (2012), 10-15(In Chinese).

[3] Tingzhi Su, Guowei Gu: Sichuan Environment, Vol. 25 (2006), 68-71(In Chinese).

[4] Cui Zhang, Yafeng Li, Ximan Tian: Industrial Safety and Environmental Protection, Vol. 12 (2009), 6-10(In Chinese).

[5] Yi Peng, Changhong Gu, Min Fu: J Chongqing Technol Business Uni. (Nat Sci Ed), Vol. 24 (2007), 24(6): 577-580(In Chinese).

[6] M.J. Haron, Y. Wan, N.L. Yong, et al: Chemosphere, Vol. 39 (1999), 2459-2466.

[7] X. Sun, H.E. Doner: Soil Sci. Vol. 163 (1998), 278-287.

[8] S. Dixit, J.G. Hering: Environ. Sci. Technol. Vol. 37 (2003), 4182–4189.

[9] Qiang Xie, Xianglan Zhang, Qingru Chen, et al: New Carbon Materials, Vol. 18 (2003), 203-208.

[10] Lei Ge, Jing Wang, Huan Chen, et al: Chinese Journal of Environmental Engineering, Vol. 3 (2009), 1745-1748(In Chinese).

[11] Cheng Liu, Naiyun Gao, Tinglin Huang: Water Purification Technology, Vol. 24 (2005), 50-52(In Chinese).

[12] Wenming Qiao, Yan Song, H.Y. Seong, et al: New Carbon Materials, Vol. 20 (2005), 198-204.

[13] Zhongliang Shi, Bingzhu Liu, Shuhua Yao: Journal of Shengyang University of Chemical Technology, Vol. 24 (2010), 7-11(In Chinese).

[14] Defu Li, Hai Zeng, Jinqu Wang, et al: Petrochemical Technology, Vol. 30 (2001), 677~680(In Chinese).

[15] Min Jang, Weifang Chen, S.C. Fred: Environ. Sci. Technol. Vol. 42 (2008), 3369-3374.