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Title: An assessment of hydrogeochemical computer codes applied toward modeling and predicting post-mining pit water geochemistry

Abstract

Geochemists for the mining industry utilize a variety of computer codes to model and predict post-mining pit water chemogenesis. This study surveys several of the PC-supported hydrogeochemical codes, applies them to specific open pit mine scenarios, and evaluates their suitability to predicting post-mining pit and groundwater hydro-geochemistry. The prediction of pit water geochemistry is important because of the potential adverse effects of mine drainage, which include acidity, trace metal contamination, pit water stratification, and sludge accumulation. The WATEQ codes of the USGS can calculate speciation and saturation states of a pit water or groundwater sample, but are not designed to model forward rock/water reactions. NETPATH can calculate the chemical mass transfer (inverse modeling) that has occurred during rock/water interaction, but again is not designed to model forward pit water chemogenesis. Several mining industry modelers use EPA's MINTEQA2 code, which has shown to be very flexible with its large database and ability to model adsorption. Reaction path codes, like PHREEQE and EQ3/6, can model reactions on an incremental basis as the pit fills over time, but also may require much user manipulation. New coupled codes like PHREEQM and HYDROGEOCHEM can simulate movement and reaction of groundwater through the aquifer as itmore » approaches and inundates the pit. One aspect of post-mining hydrogeochemical modeling that has received little attention is the effect groundwater will have down gradient after it flows from the pit into the aquifer.« less

Authors:
;  [1];  [2]
  1. Univ. of Nevada, Reno, NV (United States). Hydrology Program
  2. Univ. of Nevada, Reno, NV (United States). Dept. of Environmental Resource Sciences
Publication Date:
OSTI Identifier:
5330096
Report Number(s):
CONF-9305259-
Journal ID: ISSN 0016-7592; CODEN: GAAPBC
Resource Type:
Conference
Journal Name:
Geological Society of America, Abstracts with Programs; (United States)
Additional Journal Information:
Journal Volume: 25:5; Conference: 89. annual meeting of the Cordilleran Section and the 46th annual meeting of the Rocky Mountain Section of the Geological Society of America (GSA), Reno, NV (United States), 19-21 May 1993; Journal ID: ISSN 0016-7592
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; ROCK-FLUID INTERACTIONS; MATHEMATICAL MODELS; SURFACE MINING; LIQUID WASTES; WASTE WATER; WATER CHEMISTRY; CALCULATION METHODS; COMPUTER CODES; COMPUTERIZED SIMULATION; ENVIRONMENTAL IMPACTS; FORECASTING; GEOCHEMISTRY; WATER POLLUTION; CHEMISTRY; HYDROGEN COMPOUNDS; MINING; OXYGEN COMPOUNDS; POLLUTION; SIMULATION; WASTES; WATER; 010800* - Coal, Lignite, & Peat- Waste Management; 540320 - Environment, Aquatic- Chemicals Monitoring & Transport- (1990-); 580000 - Geosciences

Citation Formats

Bird, D A, Lyons, W B, and Miller, G C. An assessment of hydrogeochemical computer codes applied toward modeling and predicting post-mining pit water geochemistry. United States: N. p., 1993. Web.
Bird, D A, Lyons, W B, & Miller, G C. An assessment of hydrogeochemical computer codes applied toward modeling and predicting post-mining pit water geochemistry. United States.
Bird, D A, Lyons, W B, and Miller, G C. 1993. "An assessment of hydrogeochemical computer codes applied toward modeling and predicting post-mining pit water geochemistry". United States.
@article{osti_5330096,
title = {An assessment of hydrogeochemical computer codes applied toward modeling and predicting post-mining pit water geochemistry},
author = {Bird, D A and Lyons, W B and Miller, G C},
abstractNote = {Geochemists for the mining industry utilize a variety of computer codes to model and predict post-mining pit water chemogenesis. This study surveys several of the PC-supported hydrogeochemical codes, applies them to specific open pit mine scenarios, and evaluates their suitability to predicting post-mining pit and groundwater hydro-geochemistry. The prediction of pit water geochemistry is important because of the potential adverse effects of mine drainage, which include acidity, trace metal contamination, pit water stratification, and sludge accumulation. The WATEQ codes of the USGS can calculate speciation and saturation states of a pit water or groundwater sample, but are not designed to model forward rock/water reactions. NETPATH can calculate the chemical mass transfer (inverse modeling) that has occurred during rock/water interaction, but again is not designed to model forward pit water chemogenesis. Several mining industry modelers use EPA's MINTEQA2 code, which has shown to be very flexible with its large database and ability to model adsorption. Reaction path codes, like PHREEQE and EQ3/6, can model reactions on an incremental basis as the pit fills over time, but also may require much user manipulation. New coupled codes like PHREEQM and HYDROGEOCHEM can simulate movement and reaction of groundwater through the aquifer as it approaches and inundates the pit. One aspect of post-mining hydrogeochemical modeling that has received little attention is the effect groundwater will have down gradient after it flows from the pit into the aquifer.},
doi = {},
url = {https://www.osti.gov/biblio/5330096}, journal = {Geological Society of America, Abstracts with Programs; (United States)},
issn = {0016-7592},
number = ,
volume = 25:5,
place = {United States},
year = {1993},
month = {4}
}

Conference:
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