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GEOREF RECORD

Removal of Mg from spring water using natural clinoptilolite

S. Tomic, N. Rajic, J. Hrenovic and D. Povrenovic
Removal of Mg from spring water using natural clinoptilolite
Clay Minerals (March 2012) 47 (1): 81-92

Abstract

Natural zeolitic tuff from Brus (Serbia) consisting mostly of clinoptilolite (about 90%) has been investigated for the reduction of the Mg concentration in spring water. The sorption capacity of the zeolite is relatively low (about 2.5 mg Mg g (super -1) for the initial concentration of 100 mg Mg dm (super -3) ). The zeolitic tuff removes Mg from water solutions by ion exchange, which has been demonstrated by energy dispersive X-ray analysis (EDS). The extent of ion exchange was influenced by the pH and the initial Mg concentration. Kinetic studies revealed that Lagergen's pseudo-second order model was followed. Intra-particle diffusion of Mg (super 2+) influenced the ion exchange, but it is not the rate-limiting step. Rather than having to dispose of the Mg-loaded (waste) zeolite, a possible application was tested. Addition to a wastewater with a low concentration of Mg showed that it could successfully make up for the lack of Mg micronutrient and, accordingly, enabled the growth of phosphate-accumulating bacteria A. Junii, increasing the amount of phosphate removed from the wastewater.


ISSN: 0009-8558
EISSN: 1471-8030
Coden: CLMIAF
Serial Title: Clay Minerals
Serial Volume: 47
Serial Issue: 1
Title: Removal of Mg from spring water using natural clinoptilolite
Affiliation: University of Belgrade, Belgrade, Serbia
Pages: 81-92
Published: 201203
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 30
Accession Number: 2012-041820
Categories: Geochemistry of rocks, soils, and sedimentsSedimentary petrologyHydrogeology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables, 1 plate
N43°23'01" - N43°23'01", E21°02'01" - E21°02'01"
Secondary Affiliation: University of Zagreb, HRV, Croatia
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201222
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