UV-activated peroxymonosulfate for haloacetamides degradation: Kinetics and reaction pathways

Zhou, Zhen; Zhang, Xing; Zhang, Tong; Ma, Wen; Fang, Xiaojun

doi:10.1080/01932691.2020.1842756

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2023

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“…Among them, sulfate radical based-AOPs are putative in a catchy approach [10][11][12]. The main source of sulfate radical is come from persulfate.…”

Section: Introductionmentioning

confidence: 99%

Activated Persulfate by Dielectric Barrier Discharge Plasma for the Degradation of Unsymmetrical Dimethyl Hydrazine as Wastewater Pollutants

Zhou¹,

Zheng²,

Li³

et al. 2023

Pol. J. Environ. Stud.

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Releasing unsymmetrical dimethyl hydrazine (UDMH) in ambient medium is an escalating environment crisis that catches aggrandizing public concerns. Herein, a non-thermal plasma activating persulfate maneuver was introduced and its application mechanism in UDMH degradation was explored.Oxidizing kinetic experiments show that 93.8% UDMH were eliminated along with 12.5 kV, pH = 8, 50 mM NaCl, Na 2 S 2 O 8 /UDMH (mol/mol) = 2, and 140 mL/min. The Visual MINTEQ simulated species distribution of UDMH well predicted the oxidation behaviors of UDMH in the variation of pH. Radical scavenging test integrated with UV-vis spectroscopy were introduced to identify the predominating reactive oxygen species during UDMH decomposition. The •OH and •SO 4 played a synergistic role in the UDMH oxidization. Overall, this study may shed new lights on the degradation of UDMH industry wastewater using hybrid technique.

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“…Among them, sulfate radical based-AOPs are putative in a catchy approach [10][11][12]. The main source of sulfate radical is come from persulfate.…”

Section: Introductionmentioning

confidence: 99%