Evaluating sorbents for reducing per‐ and polyfluoroalkyl substance mobility in biosolids‐amended soil columns DOI Creative Commons

Elijah O. Openiyi,

Linda Lee,

Caroline Rose Alukkal

et al.

Journal of Environmental Quality, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 8, 2024

Abstract Sustainable reuse of biosolids as fertilizers is being threatened by the presence per‐ and polyfluoroalkyl substances (PFAS) in our waste stream warranting research on strategies that will minimize PFAS mobility from land‐applied biosolids. Here, we evaluated ability waste‐derived sorbents aluminum chlorohydrate water treatment residuals (ACH‐WTRs, 1 wt%) biosolids‐based biochar (1.5 to reduce columns with 3 wt% biosolids‐amended soils without sorbent layered top soil only operated under transient unsaturated conditions. Cycles simulated rain events approximately three pore volumes distributed over a 4‐day period followed days drying were imposed for 6 months. Total concentrations collected leachates lower sorbent‐treated compared control columns. Biochar outperformed ACH‐WTR 41% versus 32% total leachate, respectively, control. The most significant mitigation effect was observed PFOS (perfluorooctane sulfonate) 68% 62% less treated or control, respectively. These results provide first‐of‐its‐kind assessment potential benefit co‐applying WTRs soils.

Language: Английский

Quantification of PFAS in soils treated with biosolids in ten northeastern US farms DOI Creative Commons
Diana Oviedo‐Vargas,

Jessica Anton,

Seetha Coleman-Kammula

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 15, 2025

This study, one of the few conducted to date on working farms in US, examined per- and polyfluoroalkyl substances (PFAS) contamination 10 treated with biosolids using a paired control-treatment approach. Biosolids are nutrient-rich inexpensive soil amendments, however, if contain PFAS which known be toxic, mobile bioaccumulate, they can leave lasting negative impacts farming water. Our study showed significantly higher concentrations biosolids-treated (treatment) soils compared (untreated) controls. Soil depth, physicochemical properties (e.g., organic matter pH), sources affected types soils. While precursors were present biosolids, absent soils, likely due biotransformation terminal perfluoroalkyl products. The detection shorter-chain surface water highlights their greater mobility, raising concerns beyond boundaries farms.

Language: Английский

Citations

0
Evaluating sorbents for reducing per‐ and polyfluoroalkyl substance mobility in biosolids‐amended soil columns DOI Creative Commons

Elijah O. Openiyi,

Linda Lee,

Caroline Rose Alukkal

et al.

Journal of Environmental Quality, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 8, 2024

Abstract Sustainable reuse of biosolids as fertilizers is being threatened by the presence per‐ and polyfluoroalkyl substances (PFAS) in our waste stream warranting research on strategies that will minimize PFAS mobility from land‐applied biosolids. Here, we evaluated ability waste‐derived sorbents aluminum chlorohydrate water treatment residuals (ACH‐WTRs, 1 wt%) biosolids‐based biochar (1.5 to reduce columns with 3 wt% biosolids‐amended soils without sorbent layered top soil only operated under transient unsaturated conditions. Cycles simulated rain events approximately three pore volumes distributed over a 4‐day period followed days drying were imposed for 6 months. Total concentrations collected leachates lower sorbent‐treated compared control columns. Biochar outperformed ACH‐WTR 41% versus 32% total leachate, respectively, control. The most significant mitigation effect was observed PFOS (perfluorooctane sulfonate) 68% 62% less treated or control, respectively. These results provide first‐of‐its‐kind assessment potential benefit co‐applying WTRs soils.

Language: Английский

Citations

1