光谱学与光谱分析 |
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Mechanism Study of Fluoride Adsorption by Hydrous Metal Oxides |
GUO Hui-chao1, 2,LI Wen-jun2*,CHANG Zhi-dong2,WANG Huan-ying1, 2,ZHOU Yue3 |
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China 3. Beijing Center for Physical and Chemical Analysis, Beijing 100089, China |
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Abstract Hydrous oxides of cerium, aluminum, nickel and copper were prepared by alkaline precipitation method. Langmuir adsorption isotherm was studied and specific surface area was measured by BET method through N2 adsorption-desorption process. IR characterization of hydrous metal oxides before and after fluoride adsorption was also studied. Results show that different hydrous metal oxides have different specific surface areas and their pore size distributions also are not all the same. Adsorption capacity is not directly dependent on the specific surface area. Isotherm study indicates that the adsorption follows Langmuir model and shows the feature of monolayer adsorption. IR study before and after fluoride adsorption shows that different hydrous metal oxides have similar adsorption sites in the same IR region as well as adsorption sites in the different IR region. The comprehensive interaction of these adsorption sites with fluoride ions results in the different adsorption capacity of different hydrous metal oxides.
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Received: 2010-08-19
Accepted: 2010-12-20
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Corresponding Authors:
LI Wen-jun
E-mail: wjli@sas.ustb.edu.cn
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[1] Anderson B G. Journal of Dental Research, 1932, 12(4): 591. [2] Ministry of Health of the People’s Republic of China(中华人民共和国卫生部). China Health Statistics 2009(2009中国卫生统计年鉴). Beijing: Peking Union Medical College Press(北京:中国协和医科大学出版社), 2009. [3] LIANG Chao-ke(梁超轲). Journal of Hygiene Research(卫生研究), 1998, 27(1): 16. [4] ZHU Qi-shun, XU Guang-quan(朱其顺, 许光泉). Environmental Science and Management(环境科学与管理), 2009, 34(1): 42. [5] Meenakshi Maheshwari R C. Journal of Hazardous Materials, 2006, 137(1): 456. [6] Turner B D, Binning P J, Sloan S W. Journal of Contaminant Hydrology, 2008, 95(3-4): 110. [7] Tripathy S S, Raichur A M. Journal of Hazardous Materials, 2008, 153(3): 1043. [8] Ma Y, Wang S G, Fan M, et al. Journal of Hazardous Materials, 2009, 168(2-3): 1140. [9] Lü L. Desalination, 2007, 208(1-3): 125. [10] Tor A, Danaoglu N, Arslan G, et al. Journal of Hazardous Materials, 2009, 164(1): 271. [11] Biswas K, Gupta K, Ghosh U C. Chemical Engineering Journal, 2009, 149(1-3): 196. [12] Meenakshi S, Sundaram C S, Sukumar R. Journal of Hazardous Materials, 2008, 153(1-2): 164. [13] GUO Hui-chao,LI Wen-jun,WANG Huan-ying, et al(郭会超,李文军,王环颖,等). Environmental Science & Technology(环境科学与技术),2011,34(3):15. [14] Sing K, Everett D, Haul R, et al. Pure and Applied Chemistry, 1985, 57(4): 603. [15] Barrett E P, Joyner L G, Halenda P P. Journal of the American Chemical Society, 1951, 73(1): 373. [16] Anderson J R, Pratt K C. Sydney: Introduction to Characterization and Testing of Catalyst, Orlando Academic Press, 1985. [17] De Boer J H. In “The Structure and Properties of Porous Materials”(Everett D H and Stone F S, eds). London: Butterworth, 1958. [18] Do DD, ed. Adsorption Analysis: Equilibrium and Kinetics. London: Imperial College Press, 1998. [19] Bolster C H, Hornberger G M. Soil Science Society of America Journal, 2007, 71(6): 1796. [20] Nilchi A, Yaftian M, Aboulhasanlo G, et al. Journal of Radioanalytical and Nuclear Chemistry, 2009, 279(1): 65. [21] Atkinson R, Parfitt R, Smart R. Journal of the Chemical Society, Faraday Transactions 1. 1974, 70: 1472. [22] Takeuchi M, Bertinetti L, Martra G, et al. Applied Catalysis A: General, 2006, 307(1): 13. [23] Wang Z, Pakoulev A, Pang Y, et al. The Journal of Physical Chemistry A. 2004, 108(42): 9054. |
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