@article{83d43ea59fc84046acb5c5a7cc2e9a52,
title = "Kinetics effects of the power density and initial concentration on the sonochemical degradation of PFOS and PFOA in concentrated waste",
abstract = "Sonolysis has been suggested as a viable approach for the destruction of per- and polyfluoroalkyl substances (PFAS) in aqueous media. However, the impact of ultrasonic parameters on PFAS degradation must be better understood to transition the technology from the research discovery phase to field application. This study investigated the degradation of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) and the effect the power density (100–200 W/L) and initial concentration (10–82 μM) on the kinetics of sonolytic degradation. Results show that for a given power density, PFAS degradation was controlled by saturation kinetics, as indicated by an increase in the PFAS degradation rate with an increase in the initial concentration, until a maximum value was reached. Furthermore, the saturation conditions were dependent on the power density. Saturation was reached at a lower concentration of 40 μM at 100 W/L compared to >82 μM at 200 W/L. Results of the study demonstrate that the sonolytic degradation efficiency increases with an increase in the power density and that the optimal rate of degradation is achieved at saturation conditions. Sonolysis is a promising technology to effectively treat PFAS concentrated waste.",
keywords = "Acoustic cavitation, Emerging contaminants, Mechanism, Number of nanobubbles, PFAS, Sonochemistry, Ultrasound",
author = "Kewalramani, {Jitendra A.} and Marsh, {Richard W.} and Dhruvi Prajapati and Meegoda, {Jay N.}",
note = "Funding Information: This research was partially funded by the US National Science Foundation grant (# 2016168 I-Corps: Coupled High and Low-Frequency Ultrasonic for the Destruction of Organics). The authors would like to acknowledge support from the John A. Reif, Jr. Department of Civil & Environmental Engineering of NJIT for the first author, the NJIT undergraduate research initiative (URI) for the third author and the NJIT Provost Summer Research for the fourth author. The authors would also like to thank Mr. Gary Keyes, Mr. Purshotam Juriasingani, Dr. Rick Arnseth, and Dr. Ian Ross at Tetra Tech for several stimulating discussions, Ms. Boran Wang at NJIT for some of the LC/QQ analysis and Ms. Sharyl Maraviov at PCT Systems Inc., for loaning their ultrasound bath and power supply. Funding Information: This research was partially funded by the US National Science Foundation grant (# 2016168 I-Corps: Coupled High and Low-Frequency Ultrasonic for the Destruction of Organics). The authors would like to acknowledge support from the John A. Reif, Jr. Department of Civil & Environmental Engineering of NJIT for the first author, the NJIT undergraduate research initiative (URI) for the third author and the NJIT Provost Summer Research for the fourth author. The authors would also like to thank Mr. Gary Keyes, Mr. Purshotam Juriasingani, Dr. Rick Arnseth, and Dr. Ian Ross at Tetra Tech for several stimulating discussions, Ms. Boran Wang at NJIT for some of the LC/QQ analysis and Ms. Sharyl Maraviov at PCT Systems Inc. for loaning their ultrasound bath and power supply. Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",
year = "2023",
month = jul,
doi = "10.1016/j.jwpe.2023.103752",
language = "English (US)",
volume = "53",
journal = "Journal of Water Process Engineering",
issn = "2214-7144",
publisher = "Elsevier Limited",
}