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Species sensitivity of zeolite minerals for uptake of mercury solutes

L. S. Campbell, A. Chimedtsogzol and A. Dyer
Species sensitivity of zeolite minerals for uptake of mercury solutes
Mineralogical Magazine (August 2006) 70 (4): 361-371

Abstract

The uptake of inorganic Hg (super 2+) and organometallic CH (sub 3) Hg (super +) from aqueous solutions by 11 different natural zeolites has been investigated using a batch distribution coefficient (K (sub d) ) method and supported by a preliminary voltammetric study. The effect of mercury concentration on the K (sub d) response is shown over an environmentally appropriate concentration range of 0.1-5 ppm inorganic and organometallic Hg using a batch factor of 100 ml g (super -1) and 20 h equilibration. Analcime and a Na-chabazite displayed the greatest methylmercury uptakes (K (sub d) values at 1.5 ppm of 4023 and 3456, respectively), with mordenite as the smallest at 578. All uptake responses were greater for methylmercury than for the inorganic mercuric nitrate solutions, suggesting a distinctive sensitivity of zeolites to reaction with different types of solute species. It is likely that this sensitivity is attributable to the precise nature of the resultant Hg-zeolite bonds. Additionally, both the Si-Al ratio and the Na content of the initial natural zeolite samples are shown to influence the K (sub d) responses, with positive correlations between K (sub d) and Na content for all zeolites excluding mordenite.


ISSN: 0026-461X
EISSN: 1471-8022
Coden: MNLMBB
Serial Title: Mineralogical Magazine
Serial Volume: 70
Serial Issue: 4
Title: Species sensitivity of zeolite minerals for uptake of mercury solutes
Affiliation: University of Salford, School of Environmental and Life Sciences, Salford, United Kingdom
Pages: 361-371
Published: 200608
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 53
Accession Number: 2006-085605
Categories: Mineralogy of silicatesGeneral geochemistry
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. table
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: 200648
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