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Evaluating dual-domain models for upscaling multicomponent reactive transport in mine waste rock.
Pedretti, D; Vriens, B; Skierszkan, E K; Baják, P; Mayer, K U; Beckie, R D.
Afiliação
  • Pedretti D; Dipartimento di Scienze della Terra "A. Desio", Università degli Studi di Milano (UNIMI), Via Mangiagalli 34, 20133 Milan, Italy. Electronic address: daniele.pedretti@unimi.it.
  • Vriens B; Department of Geological Sciences & Engineering, Queen's University, 36 Union Street, Kingston, ON K7L 1N6, Canada.
  • Skierszkan EK; Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, SK S7N 5E2, Canada.
  • Baják P; József and Erzsébet Tóth Endowed Hydrogeology Chair, Eötvös Loránd University, Budapest, Hungary.
  • Mayer KU; Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2020-2207 Main Mall, Vancouver, BC V6T 1Z4, Canada.
  • Beckie RD; Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2020-2207 Main Mall, Vancouver, BC V6T 1Z4, Canada.
J Contam Hydrol ; 244: 103931, 2022 01.
Article em En | MEDLINE | ID: mdl-34861479
Reactive transport models have proven abilities to simulate the quantity and quality of drainage from mine waste rock. Tracer experiments indicate the presence of fast and slow flow regimes in many heterogeneous waste-rock piles. Although multidomain models have been developed specifically for systems with such distinctive hydrodynamics, there have been limited applications of multidomain reactive transport models to simulate composite drainage chemistries from waste-rock piles to date. This work evaluated the ability of dual-domain multicomponent reactive transport models (DDMRTMs) to reproduce breakthrough curves of conservative (chloride) and reactive (molybdenum) solutes observed at a well-characterized experimental waste-rock pile at the Antamina Mine, Peru. We found that the DDMRTM simulations quantitatively matched eight-year-long records of conservative transport through the waste-rock pile when parameterized mainly with field-measured properties obtained from the site and limited calibration. The DDMRTM model also provided a reasonable match to field observations of the reactive solute. The limited calibrated parameters are physically realistic, corroborating the ability of these multidomain models to reproduce the complex reactive-transport processes governing polluted rock drainage from large-scale waste-rock piles.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Mineração / Modelos Teóricos País/Região como assunto: America do sul / Peru Idioma: En Revista: J Contam Hydrol Assunto da revista: TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Mineração / Modelos Teóricos País/Região como assunto: America do sul / Peru Idioma: En Revista: J Contam Hydrol Assunto da revista: TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Holanda