Tags

Type your tag names separated by a space and hit enter

Sonolytic degradation of bisphenol S: Effect of dissolved oxygen and peroxydisulfate, oxidation products and acute toxicity.
Water Res 2019; 165:114969WR

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 (KPDS) 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 SO4•- in US/PDS system was reinvestigated. The result showed that SO4•- 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 O2•- 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.

Authors+Show Affiliations

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, PR China.Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China.Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, PR China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, PR China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, PR China. Electronic address: majun@hit.edu.cn.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, PR China.Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31434015

Citation

Lu, Xiaohui, et al. "Sonolytic Degradation of Bisphenol S: Effect of Dissolved Oxygen and Peroxydisulfate, Oxidation Products and Acute Toxicity." Water Research, vol. 165, 2019, p. 114969.
Lu X, Zhao J, Wang Q, et al. Sonolytic degradation of bisphenol S: Effect of dissolved oxygen and peroxydisulfate, oxidation products and acute toxicity. Water Res. 2019;165:114969.
Lu, X., Zhao, J., Wang, Q., Wang, D., Xu, H., Ma, J., ... Hu, T. (2019). Sonolytic degradation of bisphenol S: Effect of dissolved oxygen and peroxydisulfate, oxidation products and acute toxicity. Water Research, 165, p. 114969. doi:10.1016/j.watres.2019.114969.
Lu X, et al. Sonolytic Degradation of Bisphenol S: Effect of Dissolved Oxygen and Peroxydisulfate, Oxidation Products and Acute Toxicity. Water Res. 2019 Nov 15;165:114969. PubMed PMID: 31434015.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sonolytic degradation of bisphenol S: Effect of dissolved oxygen and peroxydisulfate, oxidation products and acute toxicity. AU - Lu,Xiaohui, AU - Zhao,Jingnan, AU - Wang,Qun, AU - Wang,Da, AU - Xu,Haodan, AU - Ma,Jun, AU - Qiu,Wei, AU - Hu,Tao, Y1 - 2019/08/09/ PY - 2019/01/25/received PY - 2019/07/26/revised PY - 2019/08/08/accepted PY - 2019/8/23/pubmed PY - 2019/8/23/medline PY - 2019/8/22/entrez KW - Acute toxicity KW - Bisphenol S (BPS) KW - Degradation pathway KW - Dissolved oxygen (DO) KW - Kinetics KW - Peroxydisulfate (PDS) SP - 114969 EP - 114969 JF - Water research JO - Water Res. VL - 165 N2 - 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 (KPDS) 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 SO4•- in US/PDS system was reinvestigated. The result showed that SO4•- 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 O2•- 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. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/31434015/Sonolytic_degradation_of_bisphenol_S:_Effect_of_dissolved_oxygen_and_peroxydisulfate,_oxidation_products_and_acute_toxicity L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(19)30743-2 DB - PRIME DP - Unbound Medicine ER -