"PFAS Groundwater Barrier Longevity Estimation Tool and Database"

Tool and Database for Estimating Potential Longevity of Colloidal Activated Carbon Barriers for PFAS in Groundwater

Newell, C. J., Smith, W. B., Kearney, K., Clay, S., Javed, H., Carey, G. R., Richardson, S. D., & Werth, C. J. (2025). Tool and Database for Estimating Potential Longevity of Colloidal Activated Carbon Barriers for PFAS in Groundwater. Remediation Journal, 35(3), e70017. https://doi.org/10.1002/rem.70017

Abstract

The longevity of colloidal activated carbon barriers in treating per- and polyfluoroalkyl substances (PFAS) in groundwater is a critical factor in the effectiveness of this remediation approach. In a recent study by Newell et al. (2025), a tool and database were developed to estimate the potential longevity of these barriers. This article summarizes the key findings and implications of this research.

Introduction

PFAS are a group of man-made chemicals that have been widely used in various industrial and consumer products. Due to their persistence in the environment and potential health risks, PFAS contamination has become a significant concern for regulators, researchers, and the public. One common remediation approach for PFAS-contaminated groundwater is the use of colloidal activated carbon barriers, which can effectively adsorb these compounds as water flows through them.

Methodology

In their study, Newell et al. (2025) developed a tool that integrates data on site-specific conditions, barrier design parameters, and PFAS properties to estimate the longevity of colloidal activated carbon barriers. The tool utilizes a database of PFAS adsorption capacities on activated carbon, as well as information on groundwater flow rates, barrier thickness, and carbon particle size distribution. By inputting these parameters into the tool, users can obtain an estimate of how long a barrier is expected to remain effective in treating PFAS contamination.

Results

The researchers applied the tool to several hypothetical scenarios to demonstrate its utility in estimating barrier longevity. They found that factors such as groundwater flow rate, barrier thickness, and PFAS concentration significantly influenced barrier performance. The tool also allowed for sensitivity analysis to identify key parameters that affect barrier longevity the most. Overall, the results indicated that proper design and maintenance of colloidal activated carbon barriers are crucial for maximizing their effectiveness in treating PFAS-contaminated groundwater.

Implications

The development of this tool and database represents a significant advancement in the field of PFAS remediation. By providing a systematic approach to estimating barrier longevity, researchers and practitioners can make more informed decisions when designing and implementing colloidal activated carbon barrier systems. This, in turn, can lead to more effective and sustainable remediation strategies for PFAS-contaminated sites.

Conclusion

In conclusion, the study by Newell et al. (2025) introduces a valuable tool and database for estimating the potential longevity of colloidal activated carbon barriers for PFAS in groundwater. This research contributes to ongoing efforts to develop innovative solutions for addressing PFAS contamination and highlights the importance of proper barrier design and maintenance in achieving successful remediation outcomes.

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