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Book Chapter

General Aspects of Aquatic Colloids in Environmental Geochemistry

By
J.F. Ranville
J.F. Ranville
1
Department of Chemistry/Geochemistry, Colorado School of Mines, Golden, CO 80401
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R.L. Schmiermund
R.L. Schmiermund
2
Knight Piésold LLC, 1050 17th Street, Suite 500, Denver, CO 80265
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Published:
January 01, 1997

Abstract

A recent emphasis in society is on conducting mining activities with the least environmental impact possible. A manifestation of this is the costonitoring of contaminant levels in surface and ground waters, usually in order to meet specific environmental regulations. However the simple collection of monitoring data may not provide understanding of either the actual impact of mining on the environment or suggest the most appropriate treatment processes for specific mining wastes. More detailed information on the chemical and physical forms of contaminants is needed. One aspect of this is that the occurrence and distribution of natural and anthropogenic chemicals in natural water systems is strongly influenced by their partitioning between solid and aqueous phases (Allan, 1986). Therefore contaminant behavior is generally defined in terms of “two-phase” water-rock interactions where metals, for example, are present either in the stationary solid phases of the country rock, ore pad, waste rock pile, tailings empound- ment, or slag heap or they are present as mobile, aqueous phase solutes. For groundwater the solid phase is considered to be the stationary aquifer material. In surface waters the solid phases generally considered are the sediments in the stream, pond, or lake bottom. Accordingly, computer models have been developed that address dissolution, precipitation, adsorption, and desorption between the solid and aqueous phases as well as the formation of various solute species and complexes.

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The Environmental Geochemistry of Mineral Deposits: Part A: Processes, Techniques, and Health Issues Part B: Case Studies and Research Topics

G.S. Plumlee
G.S. Plumlee
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M.J. Logsdon
M.J. Logsdon
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L.F. Filipek
L.F. Filipek
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Society of Economic Geologists
Volume
6
ISBN electronic:
9781629490137
Publication date:
January 01, 1997

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