Datta, Bithin, Petit, Claire, Palliser, Marine, K. Esfahani, Hamed, and Prakash, Om (2017) Linking a simulated annealing based optimization model with PHT3D simulation model for chemically reactuve transport processes to optimally characterize unknown contaminant sources in a former mine site in Australia. Journal of Water Resource and Protection, 9 (5). 75533. pp. 432-454.

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Abstract

Historical mining activities often lead to continuing wide spread contaminants in both groundwater and surface water in previously operational mine site areas. The contamination may continue for many years after closing down the mining activities. The essential first step for sustainable management of groundwater and development of remediation strategies is the unknown contaminant source characterization. In a mining site, there are multiple species of contaminants involving complex geochemical processes. It is difficult to identify the potential sources and pathways incorporating the chemically reactive multiple species of contaminants making the source characterization process more challenging. To address this issue, a reactive transport simulation model PHT3D is linked to a Simulated Annealing based the optimum decision model. The numerical simulation model PHT3D is utilized for numerically simulating the reactive transport process involving multiple species in the former mine site area. The simulation results from the calibrated PHT3D model are illustrated, with and without incorporating the chemical reactions. These comparisons show the utility of using a reactive, geochemical transport process’ simulation model. Performance evaluation of the linked simulation optimization methodology is evaluated for a contamination scenario in a former mine site in Queensland, Australia. These performance evaluation results illustrate the applicability of linked simulation optimization model to identify the source characteristics while using PHT3D as a numerical reactive chemical species’ transport simulation model for the hydro-geochemically complex aquifer study area.

Item ID:	53059
Item Type:	Article (Research - C1)
ISSN:	1945-3108
Keywords:	groundwater contamination; source characterization, PHT3D; linked simulation optimization methodology; chemically reactive transport simulation; mine site contamination; simulated annealing
Additional Information:	This work is licensed under the Creative Commons Attribution International License (CC BY 4.0).
Funders:	CRC-CARE Australia
Projects and Grants:	CRC-CARE project no. 5.6.0.3.09/10(2.6.03)
Date Deposited:	16 Apr 2018 01:27
FoR Codes:	40 ENGINEERING > 4005 Civil engineering > 400513 Water resources engineering @ 100%
SEO Codes:	96 ENVIRONMENT > 9609 Land and Water Management > 960999 Land and Water Management of Environments not elsewhere classified @ 100%
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