title: Peroxymonosulfate activation by phosphate anion for organics degradation in water.
abstract: Activation of peroxygens is a critical method to generate oxidative species, but often consumes additional chemical reagents and/or energy. Here we report a novel and efficient activation reaction for peroxymonosulfate (PMS) by phosphate anions (PBS). The PBS/PMS coupled system, at neutral pH, is able to decompose efficiently even mineralize a variety of organic pollutants, such as Acid Orange 7, Rhodamine B and 2,4,6-trichlorophenol. In contrast, no measurable degradation was observed when the PMS was replaced by other peroxygens (i.e. hydrogen peroxide and peroxydisulfate). Both PMS and PBS are indispensable for the oxidative degradation of pollutants. Increasing pH and concentrations of PMS and PBS significantly accelerate the degradation of organics. It is proposed that OH would be the major radical for contamination degradation at pH 7.0 through the radical quenching experiments. This work provides a new way of PMS activation for decontamination at neutral pH, in particular for phosphate-rich wastewater treatment.
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Lou
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Liuxi
authors.initials: L
authors.lastname: Wu
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Yaoguang
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Chuncheng
authors.initials: C
authors.lastname: Chen
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China. Electronic address: zhaohuiwang@dhu.edu.cn.
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Wang
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Dongxue
authors.initials: D
authors.lastname: Xiao
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Changling
authors.initials: C
authors.lastname: Fang
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Jianshe
authors.initials: J
authors.lastname: Liu
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Jincai
authors.initials: J
authors.lastname: Zhao
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Shuyu
authors.initials: S
authors.lastname: Lu
mesh_terms: D000838:Anions / Q000737:chemistry; D002733:Chlorophenols / Q000737:chemistry; D004396:Coloring Agents / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D009930:Organic Chemicals / Q000737:chemistry*; D010545:Peroxides / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D013431:Sulfates / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000838:Anions; D002733:Chlorophenols; D004396:Coloring Agents; D009930:Organic Chemicals; D010545:Peroxides; D010710:Phosphates; D013431:Sulfates; D014874:Water Pollutants, Chemical; C038288:peroxymonosulfate; D006861:Hydrogen Peroxide
keywords: Degradation; Mineralization; Peroxygen activation; Radical quenching