Oxidative paraben removal with chlorine dioxide: Reaction kinetics and mechanism

被引：19

作者：

Mao, Qianhui ^{[1
,2
,3
]}

Li, Qi ^{[1
]}

Li, Huimin ^{[1
]}

Yuan, Shoujun ^{[2
]}

Zhang, Jibiao ^{[1
]}

机构：

[1] Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China

[2] Hefei Univ Technol, Dept Municipal Engn, Sch Civil & Hydraul Engn, Hefei 230009, Peoples R China

[3] Shandong Shengkai Architectural Design Consulting, Yantai 264000, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2020年 / 237卷

关键词：

Parabens; Chlorine dioxide; Kinetics; Degradation products; Reaction pathway; PERSONAL CARE PRODUCTS; WATER-TREATMENT; BY-PRODUCTS; DEGRADATION; DICLOFENAC; PHARMACEUTICALS; PHOTODEGRADATION; IDENTIFICATION; ANTIBIOTICS; PRECURSORS;

D O I：

10.1016/j.seppur.2019.116327

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study investigated the reactivity and mechanism of paraben oxidization by chlorine dioxide. Degradation kinetics of methylparaben (MeP) and propylparaben (PrP) followed pseudo-first-order kinetics, and were studied in a pH range of 4.0-7.0 at 15 +/- 1 degrees C. The k(app) values were 84.3 M-1.s(-1) and 83.2 M-1.s(-1) for MeP and PrP, respectively, when pH value was 5.0 and the temperature was 15 +/- 1 degrees C. The rate constants depended on the solution pH, temperature, humic acid, and HCO3- concentrations. At pH values of 4-5.0, k(app) increased slowly, while at a pH value of 7.0, k(app) increased rapidly. The reaction rate constants increased with increasing temperature. Furthermore, the reaction rate was inhibited by humic acid addition, while the reaction rate increased after addition of HCO3-. Two main degradation products were identified by GC-MS and the reaction pathways were proposed.

引用

页数：8

共 48 条

[1]

Aguilar-Bernier M, 2012, ACTAS DERMO-SIFILOGR, V103, P223, DOI [10.1016/j.adengl.2011.07.008, 10.1016/j.ad.2011.07.010]

[2] Estrogenic personal care products in a greywater reuse system [J].

Andersen, H. R. ;

Lundsbye, M. ;

Wedel, H. V. ;

Eriksson, E. ;

Ledin, A. .

WATER SCIENCE AND TECHNOLOGY, 2007, 56 (12) :45-49

[3] Oxidation of sulfonamide antibiotics by chlorine dioxide in water: Kinetics and reaction pathways [J].

Ben, Weiwei ;

Shi, Yanwei ;

Li, Weiwei ;

Zhang, Yu ;

Qiang, Zhimin .

CHEMICAL ENGINEERING JOURNAL, 2017, 327 :743-750

[4] Kinetic Studies of n-Butylparaben Degradation in H2O2/UV System [J].

Bledzka, Dorota ;

Miller, Jacek S. ;

Ledakowicz, Stanislaw .

OZONE-SCIENCE & ENGINEERING, 2012, 34 (05) :354-358

[5] Determination of biocides in different environmental matrices by use of ultra-high-performance liquid chromatography-tandem mass spectrometry [J].

Chen, Zhi-Feng ;

Ying, Guang-Guo ;

Lai, Hua-Jie ;

Chen, Feng ;

Su, Hao-Chang ;

Liu, You-Sheng ;

Peng, Fu-Qiang ;

Zhao, Jian-Liang .

ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2012, 404 (10) :3175-3188

[6]

Darbre PD, 2010, ANTICANCER RES, V30, P815

[7]

Deshwal BR, 2004, J IND ENG CHEM, V10, P667

[8] Kinetics and mechanism of chloride based chlorine dioxide generation process from acidic sodium chlorate [J].

Deshwal, BR ;

Lee, HK .

JOURNAL OF HAZARDOUS MATERIALS, 2004, 108 (03) :173-182

[9] Photodegradation of parabens by Fe(III)-citrate complexes at circumneutral pH: Matrix effect and reaction mechanism [J].

Feng, Xiaonan ;

Chen, Yong ;

Fang, Yuan ;

Wang, Xiaoyue ;

Wang, Zongping ;

Tao, Tao ;

Zuo, Yuegang .

SCIENCE OF THE TOTAL ENVIRONMENT, 2014, 472 :130-136

[10] Disinfectant efficacy of chlorite and chlorine dioxide in drinking water biofilms [J].

Gagnon, GA ;

Rand, JL ;

O'Leary, KC ;

Rygel, AC ;

Chauret, C ;

Andrews, RC .

WATER RESEARCH, 2005, 39 (09) :1809-1817

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