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Activation of peroxymonosulfate by base: Implications for the degradation of organic pollutants.
Chemosphere. 2016 May; 151:280-8.C

Abstract

Increasing attention has been paid to environmentally friendly activation methods of peroxymonosulfate (PMS) in advanced oxidation processes (AOPs) for organic pollutant elimination. This work demonstrates that Base can be applied as a novel activator for PMS. The Base/PMS system, at ambient temperature, was able to degrade a variety of organic pollutants, including acid orange 7 (AO7), phenol and bisphenol A. In subsequent experiments with AO7, the decolorization rates for AO7 followed pseudo-first-order kinetics, with rate constant values ranging from 0.0006 to 0.1749 min(-1) depending on the operating parameters (initial PMS, Base, AO7 concentrations and reaction temperature). Furthermore, the mechanism for PMS activation by the Base was elucidated by radical scavenger (tert-butyl alcohol, methanol, sodium azide and p-benzoquinone) and electron spin resonance trapping studies. The results revealed that superoxide anion radical and singlet oxygen other than sulfate radical were the primary reactive oxygen species in the Base/PMS system. The findings of this study present a new pathway for PMS activation and provide useful information for the treatment of wastewater.

Authors+Show Affiliations

State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China. Electronic address: liuxt@bnu.edu.cn.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26946115

Citation

Qi, Chengdu, et al. "Activation of Peroxymonosulfate By Base: Implications for the Degradation of Organic Pollutants." Chemosphere, vol. 151, 2016, pp. 280-8.
Qi C, Liu X, Ma J, et al. Activation of peroxymonosulfate by base: Implications for the degradation of organic pollutants. Chemosphere. 2016;151:280-8.
Qi, C., Liu, X., Ma, J., Lin, C., Li, X., & Zhang, H. (2016). Activation of peroxymonosulfate by base: Implications for the degradation of organic pollutants. Chemosphere, 151, 280-8. https://doi.org/10.1016/j.chemosphere.2016.02.089
Qi C, et al. Activation of Peroxymonosulfate By Base: Implications for the Degradation of Organic Pollutants. Chemosphere. 2016;151:280-8. PubMed PMID: 26946115.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Activation of peroxymonosulfate by base: Implications for the degradation of organic pollutants. AU - Qi,Chengdu, AU - Liu,Xitao, AU - Ma,Jun, AU - Lin,Chunye, AU - Li,Xiaowan, AU - Zhang,Huijuan, Y1 - 2016/03/15/ PY - 2015/10/06/received PY - 2016/02/15/revised PY - 2016/02/21/accepted PY - 2016/3/7/entrez PY - 2016/3/8/pubmed PY - 2016/11/4/medline KW - Base KW - Decolorization KW - Peroxymonosulfate activation KW - Reactive oxygen species SP - 280 EP - 8 JF - Chemosphere JO - Chemosphere VL - 151 N2 - Increasing attention has been paid to environmentally friendly activation methods of peroxymonosulfate (PMS) in advanced oxidation processes (AOPs) for organic pollutant elimination. This work demonstrates that Base can be applied as a novel activator for PMS. The Base/PMS system, at ambient temperature, was able to degrade a variety of organic pollutants, including acid orange 7 (AO7), phenol and bisphenol A. In subsequent experiments with AO7, the decolorization rates for AO7 followed pseudo-first-order kinetics, with rate constant values ranging from 0.0006 to 0.1749 min(-1) depending on the operating parameters (initial PMS, Base, AO7 concentrations and reaction temperature). Furthermore, the mechanism for PMS activation by the Base was elucidated by radical scavenger (tert-butyl alcohol, methanol, sodium azide and p-benzoquinone) and electron spin resonance trapping studies. The results revealed that superoxide anion radical and singlet oxygen other than sulfate radical were the primary reactive oxygen species in the Base/PMS system. The findings of this study present a new pathway for PMS activation and provide useful information for the treatment of wastewater. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/26946115/Activation_of_peroxymonosulfate_by_base:_Implications_for_the_degradation_of_organic_pollutants_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(16)30250-8 DB - PRIME DP - Unbound Medicine ER -