Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soils
Solids such as soils and sediments contaminated with per- and polyfluorinated alkyl substances (PFAS) from exposure to impacted media, e.g., landfill leachate or biosolids, direct contaminated discharge, and contaminant transport from atmospheric deposition, have caused significant environmental pol...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417722001560 |
| _version_ | 1831518284746326016 |
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| author | Jitendra A. Kewalramani Boran Wang Richard W. Marsh Jay N. Meegoda Lucia Rodriguez Freire |
| author_facet | Jitendra A. Kewalramani Boran Wang Richard W. Marsh Jay N. Meegoda Lucia Rodriguez Freire |
| author_sort | Jitendra A. Kewalramani |
| collection | DOAJ |
| description | Solids such as soils and sediments contaminated with per- and polyfluorinated alkyl substances (PFAS) from exposure to impacted media, e.g., landfill leachate or biosolids, direct contaminated discharge, and contaminant transport from atmospheric deposition, have caused significant environmental pollution. Such solids can act as secondary sources of PFAS for groundwater and surface water contamination. There are currently no proven technologies that can degrade PFAS in soil and sediments in a cost-effective, environmentally-friendly, and energy-efficient manner. This study examines the use of coupled high and low-frequency ultrasound in desorbing and degrading PFAS in soil, thereby achieving concurrent treatment and destruction of PFAS in soil. Two common PFAS, namely perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS), were used to evaluate treatment performance in soils with both low and high organic matter contents. The test results showed that the ultrasound treatment could significantly reduce PFAS concentrations in artificially contaminated soil; however, no significant degradation was achieved. Ultrasound treatment did improve desorption of PFAS from solid particles, particularly from the highly absorbent organic soil; 68.8 ± 1.8% of PFOA and 45.4 ± 4.1% of PFOS were leached from the soil after ultrasound treatment compared to only 28 ± 0.2% of PFOA and 1 ± 3.1% of PFOS after desorption in water. This work shows that sonication treatment is an effective technology for the removal of PFAS from solids, however, the presence of solids in the solid–liquid slurry can negatively impact ultrasonic cavitation, inhibiting the sonolytic degradation of desorbed PFAS. |
| first_indexed | 2024-12-12T16:10:23Z |
| format | Article |
| id | doaj.art-87c63fa29dd44304b6d29fbca99cfab1 |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-12-12T16:10:23Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-87c63fa29dd44304b6d29fbca99cfab12022-12-22T00:19:13ZengElsevierUltrasonics Sonochemistry1350-41772022-08-0188106063Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soilsJitendra A. Kewalramani0Boran Wang1Richard W. Marsh2Jay N. Meegoda3Lucia Rodriguez Freire4Department of Civil and Environmental Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USADepartment of Civil and Environmental Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USADepartment of Civil and Environmental Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USACorresponding author.; Department of Civil and Environmental Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USADepartment of Civil and Environmental Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ 07102, USASolids such as soils and sediments contaminated with per- and polyfluorinated alkyl substances (PFAS) from exposure to impacted media, e.g., landfill leachate or biosolids, direct contaminated discharge, and contaminant transport from atmospheric deposition, have caused significant environmental pollution. Such solids can act as secondary sources of PFAS for groundwater and surface water contamination. There are currently no proven technologies that can degrade PFAS in soil and sediments in a cost-effective, environmentally-friendly, and energy-efficient manner. This study examines the use of coupled high and low-frequency ultrasound in desorbing and degrading PFAS in soil, thereby achieving concurrent treatment and destruction of PFAS in soil. Two common PFAS, namely perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS), were used to evaluate treatment performance in soils with both low and high organic matter contents. The test results showed that the ultrasound treatment could significantly reduce PFAS concentrations in artificially contaminated soil; however, no significant degradation was achieved. Ultrasound treatment did improve desorption of PFAS from solid particles, particularly from the highly absorbent organic soil; 68.8 ± 1.8% of PFOA and 45.4 ± 4.1% of PFOS were leached from the soil after ultrasound treatment compared to only 28 ± 0.2% of PFOA and 1 ± 3.1% of PFOS after desorption in water. This work shows that sonication treatment is an effective technology for the removal of PFAS from solids, however, the presence of solids in the solid–liquid slurry can negatively impact ultrasonic cavitation, inhibiting the sonolytic degradation of desorbed PFAS.http://www.sciencedirect.com/science/article/pii/S1350417722001560Emerging contaminantsPFASPFOAPFOSSoil remediationSediment remediation |
| spellingShingle | Jitendra A. Kewalramani Boran Wang Richard W. Marsh Jay N. Meegoda Lucia Rodriguez Freire Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soils Ultrasonics Sonochemistry Emerging contaminants PFAS PFOA PFOS Soil remediation Sediment remediation |
| title | Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soils |
| title_full | Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soils |
| title_fullStr | Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soils |
| title_full_unstemmed | Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soils |
| title_short | Coupled high and low-frequency ultrasound remediation of PFAS-contaminated soils |
| title_sort | coupled high and low frequency ultrasound remediation of pfas contaminated soils |
| topic | Emerging contaminants PFAS PFOA PFOS Soil remediation Sediment remediation |
| url | http://www.sciencedirect.com/science/article/pii/S1350417722001560 |
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