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Fate and Transport Modeling of Hexavalent Chromium in Soil and Groundwater near Chlorate Manufacturing Facilities
Subject area: Science,Engineering and Technology · Area of research: Soil and Groundwater
Abstract
Hexavalent chromium [Cr (VI)] poses a significant global environmental and public health threat due to its high toxicity, carcinogenicity, and mobility in aquatic and soil environments. Industrial activities, particularly sodium chlorate production facilities, are major anthropogenic sources of Cr(VI) release through operational inefficiencies and improper waste handling practices. Understanding the complex interplay of physical transport processes (advection, dispersion, diffusion) and intricate geochemical transformations (adsorption, reduction, oxidation, precipitation) is critical for predicting Cr(VI) behavior in subsurface environments. Reactive transport modeling (RTM) has emerged as an indispensable tool for simulating these coupled processes, providing a framework for assessing contamination risks and designing effective remediation strategies. This article reviews the fundamental properties of Cr(VI), its fate and transport mechanisms, specific contamination pathways from chlorate facilities, and the application of RTM, highlighting key challenges such as subsurface heterogeneity and the dynamic interconversion of chromium species. Future research directions emphasize improving understanding of Cr(III) re-oxidation, enhancing model calibration and validation, and developing adaptive management approaches for long-term site remediation.
Keywords
Environmental Remediation, Geochemical Processes, Groundwater Modeling, Fate and Transport, Hexavalent Chromium, Soil Contamination
References
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[12] Jamieson-Hanes, J. H., Amos, R. T., & Blowes, D. W. (2012). Reactive transport modeling of chromium isotope fractionation during Cr (VI) reduction. Environmental science & technology, 46(24), 13311-13316.
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How to cite this paper
@article{1700044,
author = {Prashant Rajurkar},
title = {Fate and Transport Modeling of Hexavalent Chromium in Soil and Groundwater near Chlorate Manufacturing Facilities},
journal = {Iconic Research And Engineering Journals},
year = {2017},
volume = {1},
number = {3},
pages = {75-85},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1700044.pdf},
abstract = {Hexavalent chromium [Cr (VI)] poses a significant global environmental and public health threat due to its high toxicity, carcinogenicity, and mobility in aquatic and soil environments. Industrial activities, particularly sodium chlorate production facilities, are major anthropogenic sources of Cr(VI) release through operational inefficiencies and improper waste handling practices. Understanding the complex interplay of physical transport processes (advection, dispersion, diffusion) and intricate geochemical transformations (adsorption, reduction, oxidation, precipitation) is critical for predicting Cr(VI) behavior in subsurface environments. Reactive transport modeling (RTM) has emerged as an indispensable tool for simulating these coupled processes, providing a framework for assessing contamination risks and designing effective remediation strategies. This article reviews the fundamental properties of Cr(VI), its fate and transport mechanisms, specific contamination pathways from chlorate facilities, and the application of RTM, highlighting key challenges such as subsurface heterogeneity and the dynamic interconversion of chromium species. Future research directions emphasize improving understanding of Cr(III) re-oxidation, enhancing model calibration and validation, and developing adaptive management approaches for long-term site remediation.},
keywords = {Environmental Remediation, Geochemical Processes, Groundwater Modeling, Fate and Transport, Hexavalent Chromium, Soil Contamination},
month = {September},
}