28 13 kehayova bratkova

- . , 56, . II, , 2013

ANNUAL OF THE UNIVERSITY OF MINING AND GEOLOGY ST. IVAN RILSKI, Vol. 56, Part I, Mining and Mineral processing, 2013

1, 2

1 - - . , 6600 , n.kehayova@abv.bg2 - . , 1700

. ( ) . () . n () . . Mn , pH .

THE POSSIBILITIES OF USE ZEOLITES IN THE PURIFICATION OF WATER POLUTTE WITH manganese Nevena Kehayova1, Svetlana Bratkova21University of Mining and Geology St. Ivan Rilski, Branch of Kardzhali, 6600 Kardzhali, n.kehayova@abv.bg 2 University Of Mining And Geology St. Ivan Rilski- 1700 Sofia Abstract. Many countries (including Bulgaria) are rich in zeolite deposits. The present publication is a brief overview of the use of natural zeolite (clinoptilolite) to remove heavy metal ions from wastewater. Special attention is devoted to the study of the ability of natural zeolite-clinoptilolite from the region of Kardzhali to immobilize ions of manganese from model mine water. Sorption of Mn was realized using zeolite (clinoptilolite) from Beli Plast field, Kardzhali. synthetic solutions with different Mn concentration were used in the experiments and the influence of pH on the adsorption process was studied. , . , Cu2+, Fe3+, Mn2+,Cd2+, Pb2+ .. , (Moreno et al., 2001, Baily et al., 1999). , - , .

. , , , .. (Richardson and Harker, 2002).

, , . (Mn2+). (Angelov A., 2009). , pH . Mn4+ , , , (Teng et al., 2001). .

, .( Angelov A., 2009). , . - . , . (Kurniawan and Babel, 2003).

,

, , , . - . 90% , - : -, , , -Na , Na-Ca , , . 0.05-0.08 mm. (AlO4) (SiO4) , . , (), . (Na2O)0,7(CaO)0,1(K2O)0,15 (Al2O3)8,5-10,5 (SiO2)6-7H2O. - . - , . , Si l , . . ( ), , , (K+, Na+,Ca2+ Mg2+) . , , , pH . , , - . , .

n2+ .

() . . 2.5 5.0 . ( S&B Industrial Minerals S.A.) 1. 1.

, %

2.5-5.0 mm

SiO2

TiO20.11

Al2O313.62

Fe2O30.75

CaO3.28

MgO0.9

K2O2.94

Na2O0.55

LOI8.23

500 ml 20g 200ml , Mn2+ (10, 25, 50, 75 100 mg/l), (MnSO4.H2O). pH 3.0, 5.0 7.0 . 22 2 . (180 rpm/min) . (15, 30,45, 60, 120, 180min) - 24 h , 15 min 5000 rpm/min . Mn2+ (Goto et al., 1962). :

%=(Co Ce).100/ Co, (1)

, Co Ce (mg/l) (mg/l). , , 1, 2 3. , ( 45 min) - . , , . (Inglezakis et al., 2002). - - . Amarasinghe Williams, 2007 45 min .

.1 Mn2+ pH 3.0

.2 Mn2+ pH 5.0

.3 Mn2+ pH 7.0 1 - 3 , ( 10 100 mg/l) ( 30 min) - . - . , - (97 99%) , Mn2+ 10 25 mg/l. , / . , . 4 - 8 pH .

.4 pH Mn2+ 10 mg/l

.5 pH Mn2+ 25 mg/l , , . , + - - (Motsi et al. 2009). - + , - . - 7.0. , Mn2+ - 10 mg/l, 3.0, 5.0 7.0 180 min 96.2, 97.6 99% . , . 100 mg/l -, 84, 88 91 %.

.6 pH Mn2+ 50 mg/l

.7 pH Mn2+ 75 mg/l

.8 pH Mn2+ 100 mg/l , , (R-Na + H2O RH + Na+ + OH-) , , , . , , . , 100 mg/l , 0.84 - 0.91 mg/g . , , . , , ( 45 min). - . , . , . , 0.84 -0.91 mg/g . 9, -012/.2013

., 2009. , Amarasinghe, B.M.W.P.K., Williams, R.A., 2007. Teawaste as a lowcost adsorbent for theremoval of Cu and Pb from wastewater. Chem. Eng. J. 132 (13), 299309.Bailey S.E., Trudy J., Olin T.J., Bricka M.R., Adrian D.D. 1999. A review of potentially low-cost sorbents for heavy metals.Water Research, 33(11): 24692479.Goto, K., Komatsu, T. and Furukawa, T., 1962. Rapid colorimetric determination of manganese in waters containing iron: A modification of the formaldexyde method, Analytica Chimica Acta, 27: 335-338. Inglezakis, V.J., Loizidou, M.D., Grigoropoulou, H.P., 2002. Equilibrium and kinetic ionexchange studies of Pb2+,Cr3+,Fe3+ and Cu2+ on natural clinoptilolite.Water Res. 36, 27842792.Kurniawan T.A., Babel S. 2003. Chromium removal from electroplating wastewater using low-cost adsorbents and commercial activated carbon Proceedings of the 5th International Summer Symposium, 26 July 2003, Tokyo, Japan, 345348Moreno N., Querol X., Ayora C., 2001.Utilization of zeolites synthesised from coal fly ash for the purification of Acid Mine Waters. Environ Sci Technol. 2001, Sep 1;35(17):3526-34.Motsi T. , Rowson N.A., Simmons M.J.H. 2009. Adsorption of heavy metals from acid mine drainage by natural zeolite Int. J. Miner. Process. 92, 4248.Richardson J.F., Harker J.H. 2002. Coulson and Richardson's Chemical Engineering Volume 2 - Particle Technology and Separation Processes (5th Edition)Teng Z., Huang J. Y., Fujita K., 2001. Manganese removal by hollow fiber micro-filter. Membrane separation for drinking water. Desalination, 139 (13) (2001), 411418.128