Decomposition of naproxen by plasma in liquid process with TiO2 photocatslysts and hydrogen peroxide

被引：10

作者：

Park, Young-Kwon ^{[1
]}

Kim, Byung-Joo ^{[2
]}

Kim, Sang-Chai ^{[3
]}

You, Chan-Seo ^{[4
]}

Choi, Jaewook ^{[4
]}

Park, Jaegu ^{[4
]}

Lee, Heon ^{[4
]}

Jung, Sang-Chul ^{[4
]}

机构：

[1] Univ Seoul, Sch Environm Engn, 163 Seoulsiripdaero, Seoul 02504, South Korea

[2] Korea Inst Carbon Convergence Technol, R&D Div, 110-11 Banryong Ro, Jeonju 54853, South Korea

[3] Mokpo Natl Univ, Dept Environm Educ, 1666 Cheonggye Myeon, Muan Gun 58554, South Korea

[4] Sunchon Natl Univ, Dept Environm Engn, 255 Jungang Ro, Sunchon 57922, Jeonnam, South Korea

来源：

ENVIRONMENTAL RESEARCH | 2021年 / 195卷

基金：

新加坡国家研究基金会;

关键词：

Plasma in liquid process; Naproxen; TiO2; photocatalyst; Hydrogen peroxide; OH radical; PHASE PLASMA; PHOTOCATALYTIC DEGRADATION; NONTHERMAL PLASMA; FACILE SYNTHESIS; WATER; DISCHARGE; NANOPARTICLES; OXIDATION; PPCPS; PHARMACEUTICALS;

D O I：

10.1016/j.envres.2021.110899

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Naproxen (NPX), one of the representative non-steroidal anti-inflammatory drug (NSAID) ingredients, was decomposed by plasma in liquid process (PiLP). Strongly oxidized species generated in the plasma field of the PiLP, such as OH radicals, were confirmed by optical emission spectroscopy Increasing the operation parameters (pulse width, frequency and applied voltage) of the power supply promoted plasma field generation and OH radical generation, and affected the NPX decomposition rate. Although the NPX decomposition reaction rate was improved by up to 18-30% by adding TiO2 photocatalyst powder and H2O2 to PiLP, but the optimal addition amount should be determined considering the plasma generation and scavenger effects. A decomposition pathway was proposed, in which NPX was mineralized into CO2 and H2O through five intermediates mainly by decarboxylation, demethylation, hydroxylation, and dehydration reactions via hydroxyl radicals.

引用

页数：7

共 50 条

[1] Detection of PPCPs in marine organisms from contaminated coastal waters of the Saudi Red Sea [J].