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Title:Controls on Heavy Metal Mobility at the Pecos Mine Operable Unit, New Mexico
Author(s):Berger, Amy Carolyn
Doctoral Committee Chair(s):Bethke, Craig M.
Department / Program:Geology
Discipline:Geology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Geochemistry
Abstract:A process model of this drainage shows the main controls on the pH are reaction with local bedrock, limestone conglomerate, and concurrent mixing with tributary streams draining unmined regions. Models that account for both calcite dissolution and mixing of up to three kilograms background water per kilogram of mine drainage water ratio reproduce the observed decrease in aqueous metal concentrations with increasing pH. Contaminant concentrations attenuate via three different pathways: zinc, magnesium, manganese, and sulfate concentrations decrease primarily through dilution; aluminum, copper, and iron precipitate directly from solution as oxide and hydroxide phases; lead adsorbs to precipitating hydroxide surfaces.
Issue Date:1999
Type:Text
Language:English
Description:114 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999.
URI:http://hdl.handle.net/2142/86552
Other Identifier(s):(MiAaPQ)AAI9944795
Date Available in IDEALS:2015-09-28
Date Deposited:1999


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