Enhanced semi-volatile DNAPL accessibility at sub-boiling temperature during electrical resistance heating in heterogeneous porous media

Zheng, Di; Geng, Zhuning; Huang, Wan; Cao, Lifeng; Wan, Ziren; Li, Guanghe; Zhang, Fang

doi:10.1016/j.jhazmat.2022.129633

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…Soil contamination is a complex and challenging issue that involves many types of hazardous metals, volatile organic compounds (VOCs), and semivolatile organic compounds (SVOCs) at contaminated sites. − Human health risk assessment is a significant method for estimating the probability of adverse health effects on humans. − The processes consist of hazard identification, dose–response assessment, exposure assessment, and risk characterization. , Sensitivity analysis is a process that evaluates the effects of changes in key parameters on human health risks and environmental impact results. , It entails identifying key parameters and evaluating the impacts of changes in these parameters on the uncertainty of calculated ratios. This, in turn, facilitates the determination of the appropriate risk management strategies.…”

Section: Introductionmentioning

confidence: 99%

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Zhang,

Du,

Yuan

et al. 2023

Environ. Health

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Sensitivity analysis is a valuable method for evaluating the impact of model parameters on health risk characterization, thereby supporting the prediction of critical uncertainty factors. However, limitations arise in terms of cross-disciplinary discussions and in-depth analyses of previous research. To overcome these limitations, a systematic and multifaceted approach was introduced for analyzing the parameter sensitivities in soil contamination risk assessment. This approach specifically targeted the 12 main parameters associated with 65 soil contaminants for health risk assessment, employing detailed authoritative statistics for risk assessment. Screening analysis revealed that identified heavy metals and organics were influenced by key parameters, such as PM10, body weight of adults (BWa), daily air inhalation rate of adults (DAIRa), air exchange rate (ER), and typical soil parameters. PM10 showed a positive 100% correlation with inorganics and metals, but BWa and DAIRa exhibited different impacts on different chemicals, with an increase in potential risk observed with higher BWa and lower DAIRa. Furthermore, incorporating soil parameters in the analysis showed that compact soil could improve the protection against vapor organic compounds for human health. This refined study presents a comprehensive strategy for sensitivity analysis in health risk assessment of soil contamination, thereby offering substantial support for the protection and preservation of human health. A logical framework also was provided for addressing the limitations of sensitivity analysis and facilitating an understanding of the complex relationships between model parameters and the health risk of soil contamination.

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Section: Introductionmentioning

confidence: 99%

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Zhang,

Du,

Yuan

et al. 2023

Environ. Health

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“…Furthermore, ATES systems may also be combined or integrated synergistically with aquifer in‐situ bioremediation systems (Ni et al., 2020; Wang et al., 2022), as changes in groundwater temperature can be exploited to alter biogeochemical processes and hasten or stimulate in‐situ bioremediation processes (Bin Hudari et al., 2022; Keller et al., 2021; Regenspurg et al., 2020). The presence of three distinct temperature zones (background, cold well, warm well) in aquifers with ATES systems, together with advection caused by injection and extraction of water, may stimulate convective processes that facilitate the mixing required for in‐situ chemical or biological remediation, and that move contaminants to regions where they can more easily be subjected to pump and treat (Zheng et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, ATES systems may also be combined or integrated synergistically with aquifer in-situ bioremediation systems (Ni et al, 2020;Wang et al, 2022), as changes in groundwater temperature can be exploited to alter biogeochemical processes and hasten or stimulate in-situ bioremediation processes (Bin Hudari et al, 2022;Keller et al, 2021;Regenspurg et al, 2020). The presence of three distinct temperature zones (background, cold well, warm well) in aquifers with ATES systems, together with advection caused by injection and extraction of water, may stimulate convective processes that facilitate the mixing required for in-situ chemical or biological remediation, and that move contaminants to regions where they can more easily be subjected to pump and treat (Zheng et al, 2022).The performance of ATES systems under various hydrogeological properties and operating conditions remains an emerging subject of intensive research in the literature (Birdsell et al, 2021;Kranz & Frick, 2013;Liu et al, 2020;Vidal et al, 2022), and a more complete quantitative characterization of it constitutes a key step toward wider economic and scientific acceptance of this environmentally sustainable technology (Hoekstra et al, 2020). Heat losses from the stored plume arise from several dispersive processes.…”

mentioning

confidence: 99%

Dimensionless Thermal Efficiency Analysis for Aquifer Thermal Energy Storage

Tang,

Rijnaarts

2023

Water Resources Research

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Seasonal warm and cold water storage in groundwater aquifers is a cost‐effective renewable energy technology for indoor heating and cooling. Simple dimensionless analytical solutions for the thermal recovery efficiency of Aquifer Thermal Energy Storage (ATES) systems are derived, subject to heat losses caused by thermal diffusion and mechanical dispersion. The analytical solutions pertain to transient pumping rates and storage durations, and multiple cycles of operation, and are applicable to various well configurations and thermal plume geometries. Heat losses to confining layers, its implications for optimizing plume geometries and aspect ratios, and heat spreading due to free convection are also discussed. This provides a general tool for broad and rapid assessment of aquifers and ATES systems. We show that if heat exchange with the confining layers is negligible, the thermal recovery efficiency of thermal plumes with cylindrical geometry is independent of the aquifer porosity and heat capacity C0. Therefore, if mechanical dispersion is negligible as is often the case, the only aquifer property that affects the recovery efficiency is the aquifer thermal conductivity. The field‐scale aquifer thermal conductivity λ can therefore be inferred from the recovery efficiency of a push‐pull heat recovery test. Remarkably, an increase in C0 could either increase, decrease, or not affect the recovery efficiency, depending on the thermal plume geometry. Hence, the analytical solutions reveal that the recovery efficiency is affected by complex interactions between the thermal plume geometry and aquifer properties. Approximate analytical solutions for subsurface temperature profiles over an entire ATES cycle are also derived.

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Spatiotemporal dynamic temperature variation dominated by ion behaviors during groundwater remediation using direct current

Zheng,

Xie,

et al. 2024

Environmental Pollution

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Enhanced semi-volatile DNAPL accessibility at sub-boiling temperature during electrical resistance heating in heterogeneous porous media

Cited by 6 publications

References 37 publications

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Dimensionless Thermal Efficiency Analysis for Aquifer Thermal Energy Storage

Spatiotemporal dynamic temperature variation dominated by ion behaviors during groundwater remediation using direct current

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