title: Radicals induced from peroxomonosulfate by nanoscale zero-valent copper in the acidic solution.
abstract: A highly efficient advanced oxidation process for the degradation of benzoic acid (BA) during activation of peroxomonosulfate (PMS) by nanoscale zero-valent copper (nZVC) in acidic solution is reported. BA degradation was almost completely achieved after 10 min in the nZVC/PMS process at initial pH 3.0. PMS could accelerate the corrosion of nZVC in acidic to release Cu+which can further activate PMS to produce reactive radicals. Both sulfate radical (SO4-•) and hydroxyl radical (•OH) were considered as the primary reactive oxidant in the nZVC/PMS process with the experiments of methyl (MA) and tert-butyl alcohol quenching. Acidic condition (initial pH ≤ 3.0) facilitated BA degradation and pH is a decisive factor to affect the oxidation capacity in the nZVC/PMS process. Moreover, BA degradation in the nZVC/PMS process followed the pseudo-first-order kinetics, and BA degradation efficiency increased with the increase of the nZVC dosage.
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Peng
authors: P
authors: Zhou
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Bei
authors: B
authors: Liu
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Jing
authors: J
authors: Zhang
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Yongli
authors: Y
authors: Zhang
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Gucheng
authors: G
authors: Zhang
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Chenmo
authors: C
authors: Wei
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Juan
authors: J
authors: Liang
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Ya
authors: Y
authors: Liu
authors: College of Architecture & Environment, Sichuan University, Chengdu 610065, China E-mail: zjing428@163.com.
authors: Wei
authors: W
authors: Zhang
mesh_terms: D019817:Benzoic Acid / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry; D010084:Oxidation-Reduction; D013431:Sulfates / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D016877:Oxidants; D013431:Sulfates; D014874:Water Pollutants, Chemical; C069025:sulfate radical; D017665:Hydroxyl Radical; D003300:Copper; D019817:Benzoic Acid