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IRON AND MANGANESE REMOVAL BY ZEOLITE

S. Dimitrova, I. Kostova, K. Ivanova, S. Lazarova

First published: 2008DOI pendingView metrics

Abstract

Surface and ground waters are used for potable water supply. Some of they contain iron and manganese. The presence of these impurities in natural waters is undesirable due to their tendency to oxidize and precipitate under a variety of conditions, causing both aesthetic and treatment water problems. The possibility to use zeolite for iron (Fe) and manganese (Mn) removal in low concentrations from water is examined in this paper. Ion-exchange process to the maximum allowable limits of 0.3 mg/L for iron and 0.05 mg/L for manganese, backwashing and regeneration are investigated in column tests. Two chemical forms zeolite (natural and sodium) are used. It is established that: 1) the manganese removal by zeolite in sodium form is much more effective than natural zeolite; 2) the manganese regeneration by sodium chloride is completed, what prolongs the filter bed life; 3) zeolite used for manganese ion exchange and regenerated by KMnO4 shows good effect of iron removal; 4) natural zeolite is effective filtration media for oxidized iron.

Publication details

Title
IRON AND MANGANESE REMOVAL BY ZEOLITE
Authors
S. Dimitrova, I. Kostova, K. Ivanova, S. Lazarova
Proceedings
8th International Scientific Conference - SGEM2008
Publisher
SGEM Scientific GeoConference
Year
2008
Pages
129-136
SWS Citekey
Dimitrova2008129136
ISSN
Not available yet
ISBN
954-91818-1-2
Language
en
Publication type
Conference Paper
Keywords
Ecology and Environmental Protectionion exchangeironmanganesenatural waterzeolite filter
References6

  1. Han R., Zou W., Li H., Li Y., Shi J. (2006)Copper (II) and lead (II) removal from aqueous solution in fixed - bed columns by manganese oxide coated zeolite, J. Hazardous Mater, B 137 , 934 - 942.

  2. Edwards, M.A. and Benjamin, M.M. (1989). Adsorptive filtration using coated sand: A new approach for treatment of metal - bearing wastes. J. Water Pollution Control Fed., 61, 1523 - 1533.

  3. Lo, S.L., Jeng, H.T. and Lai, C.H. (1997). Characteristics and adsorption properties of iron- coated sand. Water Science Technology, 35, 63-70.

  4. Ali E. (2006). Bulgarian zeolite: characterization and application for wastewater treatment. BWA, No 1, 18 - 23.

  5. BDS - 3425: 1985/2002 Method for determination total contents of iron.

  6. BDS - 3559: 1985/2002 Method for determination contents of manganese.

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