Ion exchange of ammonium in natural and synthesized zeolites

Journal of Hazardous Materials
Yifei WangWenqin Pang

Abstract

In this study, zeolite Na-P and Na-Y was prepared by hydrothermal treatment of the Chinese natural clinoptilolite with NaOH. The ion exchange of NH4+ into the three zeolites in the temperature range of 288-333K was also investigated, and the thermodynamic parameters were calculated. The selectivity sequence for NH4+ entering the sodium form of the three materials was Na-clinoptilolite>Na-Y>Na-P, as indicated by values of DeltaG degrees . The results demonstrated that the Si/Al molar ratio of zeolites determined the selectivity for NH4+.

References

Nov 8, 2003·Water Research·E Alvarez-AyusoX Querol
Dec 29, 2004·Journal of Hazardous Materials·A FarkasZ Barbarić-Mikocević
Jan 31, 2006·Journal of Hazardous Materials·Doğan KaradagBulent Armagan

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Citations

Feb 23, 2010·Journal of Hazardous Materials·Yafei ZhaoRongfeng Chen
Dec 22, 2015·Journal of Environmental Management·Gaëtan MontégutJoël Patarin
Oct 9, 2015·International Journal of Analytical Chemistry·Mengrui Yang, Tatsuya Fujino
Sep 29, 2011·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Silvio J MontalvoRafael Borja
Sep 7, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Hongwei GuoPeng Li

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