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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29396

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The Effect of Modification and Initial Concentration on Ammonia Removal from Leachate by Zeolite
The purpose of this study is to investigate the capacity of natural Turkish zeolite for NH4-N removal from landfill leachate. The effects of modification and initial concentration on the removal of NH4-N from leachate were also investigated. The kinetics of adsorption of NH4-N has been discussed using three kinetic models, i.e., the pseudo-second order model, the Elovich equation, the intraparticle diffuion model. Kinetic parameters and correlation coefficients were determined. Equilibrium isotherms for the adsorption of NH4-N were analyzed by Langmuir, Freundlich and Tempkin isotherm models. Langmuir isotherm model was found to best represent the data for NH4-N.
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[1] A.A.Halim, H.A. Aziz, M.A.M Johari and K.S. Ariffin, Comparison study of ammonia and COD adsorption on zeolite, activated carbon and composite materials in landfill leachate treatment, Desalination, 262, (2010), 31-35.
[2] A. Amokrane, C. Comel, J. Veron, Landfill leachates pretreatment by coagulation-flocculation, Water Res. 31 (11) (1997) 2775-2782
[3] X.Z. Li, Q.L. Zhao, X.D. Hao, Ammonium removal from landfill leachate by chemical precipitation, Waste Manage. 19 (1999) 409-415.
[4] Ruo He, Xin-wen Liu, Zhi-jian Zhang, Dong-sheng Shen, Characteristics of the bioreactor landfill system using an anaerobic process for nitrogen removal, Bioresource Technology (2006).
[5] Yuqiu Wang, Shijun Liu, Ze Xu, Tianwei Han, Sun Chuan, Tan Zhu, Ammonia removal from leachate solution using natural Chinese clinoptilolite, Journal of Hazardous Materials B136(2006)735-740.
[6] S.M. Auerbach, K.A. Carrado, P.K. Dutta, Handbook of Zeolite Science and Technology, Marcel Dekker, Inc., 2003, New York, Basel.
[7] D. Karada─ƒ, S. Tok, E. Akg├╝l, M. Turan, M. ├ûzt├╝rk, A. Demir. Ammonium removal from sanitary landfill leachate using natural Gördes clinoptilolite, J.Hazard. Materials 153 (2008) 60-66.
[8] F. Ayd─▒n, A. Kuleyin, "Ammonia removal from landfill leachate using natutal Turkish Zeolite" International Symposium The Environment and Industry (INCD ECOIND) October 25-27 (2007) Bucharest, Romania
[9] M.Kithome, J.W.Paul, *L.M.Lavkulich, and A.A. Bomke, Kinetics of Ammonium Adsorption and Desorption by the Natural Zeolite Clinoptilolite, published in Soil. Sci. Soc. Am. J. 62(1998) 622-629.
[10] N.Bektaş, B.A.Ağım, S.Kara, Kinetic and equilibrium studies in removing lead ions from aqueous solutions by natural sepiolite, Journal of Hazardous Materials B112 (2004) 115-122.
[11] M.Kobya, Removal of Cr(VI) from aqueous solution by adsorption onto hazelnut shell activated carbon: kinetic and equilibrium studies, Bioresource Technology 91 (2004) 317-321.
[12] Yunus Önal, Kinetics of adsorption dyes from aqueous solution using activated carbon prepared from waste apricot, Journal of Hazardous Materials B137 (2006) 1719-1728.
[13] Donghui Wen, Yuh-Shan Ho, Xiaoyan Tang*, Comparative sorption kinetic studies of ammonium onto zeolite, Journal of Hazardous Materials B133 (2006) 252-256.
[14] Indra D.Mall*, Vimal C.Srivastava, Nitin K.Agarwal, Removal of Orange-G and Methyl Violet dyes by adsorption onto bagasse fly ash - kinetic study and equilibrium isotherm analyses, Dyes and Pigments 69 (2006) 210-223.
[15] Stephen J.Allena,*, Quan Gana, Ronan Matthewsa, Pauline A.Johnsonb, Comparison of optimised isotherm models for basic dye adsorption by kuzdu, Bioresource Technology 88 (2003) 143-152.
[16] Lain-Chuen Juang*, Cheng-Cai Wang, Chung-Kung Lee, Adsorption of basic dyes onto MCM-41, Chemosphere, 2006.
[17] G.Atuna,*, G.Hisarlia, W.S.Sheldrickb, and M.Muhlerc, Adorptive removal of methylene blue from colored effluent on fuler-s earth, Journal of Colloid and Interface Science 261 (2003) 32-39.
[A. Kuleyin, Removal of phenol and 4-chlorophenol by surfactantmodified natural zeolite, Journal of Hazardous Materials 144 (2007) 307-315.
[19] M.Sarioglu, Removal of ammonium from municipal wastewater using natural Turkish (Dogantepe) zeolite, Seperation and Purification Technology, 41 (2005) 1-11.
[20] O. Hamdaoui, F. Saoudi, M. Chiha, E. Naffrechoux, Sorption of malachite green by a novel sorbent, dead leaves of plane tree: Equilibrium and kinetic modeling, Chemical Engineering Journal, 143 (2008) 73-84.
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