Elimination of Cd2+ and Mn2+ from Wastewaters Using Natural Clinoptilolite and Synthetic Zeolite P

Document Type : Research Note


Jabar Ibn Hayan Research Labs., (AEOI), P.O. Box 14374 Tehran, I.R. IRAN


This study deals with the uptake of Cd2+ and  Mn2+ ions from contaminated water using two Iranian natural clinoptilolite-rich tuffs from Meyaneh (Z-m), and Semnan (Z-s) regions , and a synthetic zeolite-P from Z-m sample (Z-P) under static (batch operation) and dynamic (column operation) conditions. To investigate the selectivity of the zeolites toward Cd2+ and Mn2+ cations, the ion exchange isotherms were constructed at 298K. According to the data obtained for both cations, the following general trend in distribution coefficient (Kd) and consequently in selectivity was achieved for the investigated exchangers: Z-P>>Z-m> Z-s.


Main Subjects

[1] Patterson, J.W., “Wastewater  Treatment  Techno-logy”, Ann Arbor Science, Ann Arbor, MI, USA, (1975).
[2] Bak, J., Jensen, J., Larsen, M.M., Pritzal, G., Scott-Fordsmand, J., A heavy metal monitoring programmed in Denmark, J. Sci. Total Environ., 207, 179 ( 1996 ).
[3] Zamzom, M.J., Schultze, L.E., Treatment of Acid Mine Drinage Using Natural Zeolites, Natural Seolites’93, (D.W. Ming and F.A. Mump ton eds.), ICNZ, Brockport, New York, 405-413(1995).
[4] U.S.E.P.A, “Drinking water regulations and health advisories”, U.S. Environmental protection Agency, Washington D.C.( 1993).
[5] Beszedites, S., Netzer, A., “Removal of heavy metals from wastewater”, B&L Information Service, station L, Toronto, Canada, M6E 2W4, (1986).
[6] Panssini, M., Natural zeolites as cation exchangers for environment protection, Mineralium Deposit., 31, 563-565(1996).
[7] Rabbani, M.S., Kazemian, H., Ghannadi Maragheh M. and Mallah, M.H., Characterization of a natural analcime from Ardebil (Germi) region of Iran and evaluation of its ion-exchange properties in comparison with synthetic analcime, Second FEZA Conference, Taormina, Giardini Naxos, Italy, 1-5 September (2002).
[8] Faghihian,  H. and Kazemian,  H., Zeolite-p syn-thesized from clinoptilolite Rich-tuffs as a potential material for removal of Cs+, Sr2+, Ba2+ and Ca2+ from liquid radioactive waste, Nucl. Sci. J., 37 (3), 180 (2000).