Linking PFAS partitioning behavior in sewage solids to the solid characteristics, solution chemistry, and treatment processes
نویسندگان
چکیده
Per- and polyfluoroalkyl substances (PFAS) have gained increasing attention due to the potential health risks that they present. Secondary sludge biosolids are known as notable PFAS emission routes environment. In this study, partitioning behavior of 14 were investigated across four secondary wastewater treatment types (activated sludge, trickling filter, biological nutrient removal, rotating contactor; n = 10) three stabilization methods (composting, aerobic digestion, anaerobic digestion; 6). Batch experiments conducted evaluate how sorption biosolid was affected by various methods, solid properties, solution chemistry parameters. Insignificant differences in compound-specific coefficients (Kd) observed among methods. However, resulted significantly different samples, which anaerobically digested generally had higher Kd values compared aerobically composted (anaerobic digestion > composting). Multiple linear regression models developed explain analyte-specific samples identified solid-specific property significance follows: protein fraction organic matter lipid fraction. Stabilization decreased capacity relative samples. Furthermore, increased with elevated calcium concentrations ionic strengths pH These findings could inform decision-making process reduce release
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ژورنال
عنوان ژورنال: Chemosphere
سال: 2021
ISSN: ['0045-6535', '1879-1298']
DOI: https://doi.org/10.1016/j.chemosphere.2020.129530