Cited by 85Advanced oxidation water treatmentUltrasound and Cavitation PhenomenaPer- and polyfluoroalkyl substances research

Sonolytic degradation of bisphenol S: Effect of dissolved oxygen and peroxydisulfate, oxidation products and acute toxicity

Lu, Xiaohui, Zhao, Jingnan, Wang, Qun, Wang, Da, Xu, Haodan, Ma, Jun, Qiu, Wei, Hu, Tao·2019·Water Research

Abstract

In this paper, the kinetics of bisphenol S (BPS) degradation in the presence of peroxydisulfate (PDS) or dissolved oxygen (DO) in ultrasound (US) system were investigated. For PDS (US/PDS), increased PDS concentration result in faster BPS degradation, but the enhancement was not remarkable with multiplying PDS dosages. Therefore, heterogeneous PDS activation model based on a Langmuir-type adsorption mechanism was proposed to explain the trait of BPS abatement. The equilibrium constant of PDS (K PDS) was calculated to be 2.91 × 10-4/μM, which was much lower than that of BPS, suggesting that PDS was hard to adsorb on the gas-liquid interface of the cavitation bubble following by activation. Besides, the formation of •OH and SO 4•- in US/PDS system was reinvestigated. The result showed that SO 4•- rather than •OH was the predominant radical, which was quite different from previous study. Dissolved oxygen largely improve the degradation of BPS in US system and •OH rather than O 2•- was proved to be the main reactive oxygen species (ROS). The improvement of •OH generation possibly caused by the reaction of DO with •H so that it cannot recombine with •OH. The transformation of the BPS in US system mainly included BPS radical polymerization, hydroxylation and hydrolysis. Frustratingly, the acute toxicity assay of Vibrio fischeri suggests that the degradation products of BPS are more toxic. These results will improve the understanding on the activation mechanisms of PDS and the role of dissolved oxygen play in US. Further investigations may need to explore other treatment ways of BPS and evaluate the acute toxicity of degradation products.

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Crossref · 10.1016/j.watres.2019.114969

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Authors
Lu, X., Zhao, J., Wang, Q., Wang, D., Xu, H., Ma, J., Qiu, W., & Hu, T.
Affiliations
  • Harbin Institute of Technology (CN)
  • Southwest Jiaotong University (CN)
Corresponding author
  • Wang, Qun
  • Ma, Jun
Venue
Water Research
Publisher
Elsevier BV
Published
2019-11
Volume
165
Pages
114969
ISSN
0043-1354 (ISSN-L)
OpenAlex
W2969104980
Cited by
85
References
66
Citations by year
2026: 3 · 2025: 7 · 2024: 9 · 2023: 8 · 2022: 18 · 2021: 24 · 2020: 16
FWCI
5.25
Type
journal article
Language
en
Open access
closed
Locations
  • Water Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • State Key Laboratory of Urban Water Resource and Environment
  • Key Technologies Research and Development Program
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
  • Physical Sciences › Materials Science › Materials Chemistry › Ultrasound and Cavitation Phenomena
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
Keywords
bisphenol S, sonochemical degradation, persulfate activation, dissolved oxygen, Langmuir adsorption, cavitation bubbles, sulfate radicals, hydroxyl radicals, reactive oxygen species, degradation kinetics, degradation products, acute toxicity, Vibrio fischeri, radical polymerization, hydroxylation, hydrolysis
MeSH terms
Bisphenol S Compounds, Oxidation-Reduction, Oxygen, Phenols, Sulfones, Water Pollutants, Chemical

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