Tags

Type your tag names separated by a space and hit enter

Enhanced degradation of organic contaminants in water by peroxydisulfate coupled with bisulfite.
J Hazard Mater. 2017 Apr 15; 328:98-107.JH

Abstract

In this study, the bisulfite-peroxydisulfate system (S(IV)/PDS) widely used in polymerization was innovatively applied for organic contaminants degradation in water. The addition of S(IV) into PDS system remarkably enhanced the degradation efficiency of bisphenol A (BPA, a frequently detected endocrine disrupting chemical in the environments) from 17.0% to 84.7% within 360 min. The degradation efficiency of BPA in the S(IV)/PDS system followed pseudo-first-order kinetics, with rate constant values ranging from 0.00005min-1 to 0.02717min-1 depending on the operating parameters, such as the initial S(IV) and PDS dosage, solution pH, reaction temperature, chloride and water type. Furthermore, nitrogen purging experiment, radical scavenging experiment and electron spin resonance (ESR) analysis were used to elucidate the possible mechanism. The results revealed that sulfate radical was the dominant reactive species in the S(IV)/PDS system. Finally, based on the results of liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS), the BPA degradation pathway was proposed to involve β-scission (CC), hydroxylation, dehydration, oxidative skeletal rearrangement, and ring opening. This study helps to characterize the combination of PDS and inorganic S(IV), a common industrial contaminant, to generate reactive species to enhance organic contaminants degradation in water.

Authors+Show Affiliations

State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China; State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, Tsinghua University, Beijing 100084, PR China. Electronic address: qichengdu@mail.tsinghua.edu.cn.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China. Electronic address: liuxt@bnu.edu.cn.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28103489

Citation

Qi, Chengdu, et al. "Enhanced Degradation of Organic Contaminants in Water By Peroxydisulfate Coupled With Bisulfite." Journal of Hazardous Materials, vol. 328, 2017, pp. 98-107.
Qi C, Liu X, Li Y, et al. Enhanced degradation of organic contaminants in water by peroxydisulfate coupled with bisulfite. J Hazard Mater. 2017;328:98-107.
Qi, C., Liu, X., Li, Y., Lin, C., Ma, J., Li, X., & Zhang, H. (2017). Enhanced degradation of organic contaminants in water by peroxydisulfate coupled with bisulfite. Journal of Hazardous Materials, 328, 98-107. https://doi.org/10.1016/j.jhazmat.2017.01.010
Qi C, et al. Enhanced Degradation of Organic Contaminants in Water By Peroxydisulfate Coupled With Bisulfite. J Hazard Mater. 2017 Apr 15;328:98-107. PubMed PMID: 28103489.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enhanced degradation of organic contaminants in water by peroxydisulfate coupled with bisulfite. AU - Qi,Chengdu, AU - Liu,Xitao, AU - Li,Yang, AU - Lin,Chunye, AU - Ma,Jun, AU - Li,Xiaowan, AU - Zhang,Huijuan, Y1 - 2017/01/10/ PY - 2016/08/23/received PY - 2016/12/04/revised PY - 2017/01/08/accepted PY - 2017/1/20/pubmed PY - 2017/1/20/medline PY - 2017/1/20/entrez KW - Bisulfite KW - Mechanism KW - Organic contaminants degradation KW - Peroxydisulfate KW - Sulfate radical SP - 98 EP - 107 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 328 N2 - In this study, the bisulfite-peroxydisulfate system (S(IV)/PDS) widely used in polymerization was innovatively applied for organic contaminants degradation in water. The addition of S(IV) into PDS system remarkably enhanced the degradation efficiency of bisphenol A (BPA, a frequently detected endocrine disrupting chemical in the environments) from 17.0% to 84.7% within 360 min. The degradation efficiency of BPA in the S(IV)/PDS system followed pseudo-first-order kinetics, with rate constant values ranging from 0.00005min-1 to 0.02717min-1 depending on the operating parameters, such as the initial S(IV) and PDS dosage, solution pH, reaction temperature, chloride and water type. Furthermore, nitrogen purging experiment, radical scavenging experiment and electron spin resonance (ESR) analysis were used to elucidate the possible mechanism. The results revealed that sulfate radical was the dominant reactive species in the S(IV)/PDS system. Finally, based on the results of liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS), the BPA degradation pathway was proposed to involve β-scission (CC), hydroxylation, dehydration, oxidative skeletal rearrangement, and ring opening. This study helps to characterize the combination of PDS and inorganic S(IV), a common industrial contaminant, to generate reactive species to enhance organic contaminants degradation in water. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/28103489/Enhanced_degradation_of_organic_contaminants_in_water_by_peroxydisulfate_coupled_with_bisulfite_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(17)30015-8 DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.