Ammonia Removal from Nitrogenous Industrial Waste Water Using Iranian Natural Zeolite of Clinoptilolite Type
 Y. Wang, Sh. Liu, S. Chuan, Z. Xu, T. Han, and T. Zhu, "Ammonia
removal from leachate solution using natural Chinese clinoptilolite," J.
Hazard. Mater., vol. 136, pp. 735-740, 2006.
 AR. Rahmani, S. Nasseri, AR. Mesdaghinia, and AH. Mahvi,
"Investigation of ammonia removal from polluted waters by
Clinoptilolite zeolite," Inter. J. Envi. Sci. and Tech., vol. 1, pp. 125-133,
 N. Keyvani, Regulations & Environmental Standards in Human
Environment Field. Iran Enviromental Protection Agancy, 2008, pp. 45-
 A. Zorpas, V. Inglezakis, M. Stylianou, V. Irene, "Sustainable Treatment
Method of a High Concentrated NH3 Wastewater by Using Natural
Zeolite in Closed-Loop Fixed Bed Systems," Open Envi. Sci., vol. 3, pp.
 MI. Nguyen, CC. Tanner, "Ammonium removal from wastewaters using
natural New Zealand zeolites," New Zealand. J. Agri. Res., vol. 41, pp.
 M. Sarioglu, "Removal of ammonium from municipal wastewater using
natural Turkish (Dogantepe) zeolite," Sep. Pur. Tech., vol. 41, pp. 1-11,
 D. Karadag, Y. Kok, M. Turan, B. Armagan, "Removal of ammonium
ion from aqueous solution using natural Turkish clinoptilolite," J.
Hazard. Mater., vol. 136, pp. 604-609, 2006.
 LR. Weatherly, ND. Miladinovic, "Comparison of the ion exchange
uptake of ammonium ion onto New Zealand clinoptilolite and
mordenite," Water Res., vol. 38, pp. 4305-4312, 2004.
 Y.-F. Wang, F. Lina, W.-Q. Pang, "Ammonium exchange in aqueous
solution using Chinese natural clinoptilolite and modified zeolite," J.
Hazard. Mater., vol. 142, pp. 160-164, 2007.
 Q. Du, Sh. Liu, Zh. Cao, Y. Wang, "Ammonia removal from aqueous
solution using natural Chinese clinoptilolite," Sep. Pur. Tech., vol. 44,
pp. 229-234, 2005.
 TC. Jorgensen, LR. Weatherly, "Ammonia removal from wastewater by
ion exchange in the presence of organic contaminants," Water Res., vol.
37, pp. 1723-1728, 2003.