Effect of low-level H2O2 and Fe(II) on the UV treatment of tetracycline antibiotics and the toxicity of reaction solutions to zebrafish embryos

Zhao，Ting1; Zheng，Ming2; Fu，Caixia1; Li，Guanrong1; Xiong，Ying1; Qiu，Wenhui1,3; Zhang，Ting1; Zhang，Juan1; Zheng，Chunmiao1,3

2020-08-15

10.1016/j.cej.2020.125021

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

The pollution of tetracyclines (TCs) in waters has caused public concern and scientific interest. This study investigates the effect of low-level hydrogen peroxide (H2O2) and ferrous ion (Fe(II) concentrations on the UV treatment of four TCs: oxytetracycline (OTC), tetracycline (TC), chlorotetracycline (CTC), and doxycycline (DXC). The optimum addition of Fe(II) (0.05 mM) and HO (0.5 mM) promoted the attenuation and mineralization of test TCs, and a higher pH was conducive to their attenuation. Environmental-level water constituents (CO , HCO , NO , SO , NH , fulvic acid (FA), and humic acid (HA)) promoted test TCs attenuation under UV treatment, but inhibited their attenuation under HO/UV and Fe(II)/UV treatments (with the exception of HCO and FA). The attenuation of test TCs was attributed to UV and DOM* under UV treatment, UV, DOM*, HO, and ·OH under HO/UV treatment, and UV, DOM*, Fe-complexation, and ·OH under Fe(II)/UV treatment. A tentative degradation pathway of test TCs was proposed based on the detected intermediates and the degradation mechanisms. Additionally, an evaluation of the toxicity of treated solutions to zebrafish embryos showed that, solutions treated by only Fe(II) or HO caused great toxicity, and Fe(II) or HO combining with UV treatment could decrease the toxicity but required a longer irradiation time (>4h). Overall, our findings provide a scientific assessment of UV-based methods to remove antibiotics from aquatic systems.

Tetracyclines (TCs) Toxicity to zebrafish embryos UV, H2O2/UV and Fe(II)/UV

SCI ; EI

英语

第一 ; 通讯

Shenzhen Science and Technology Innovation Committee[JCYJ20180302180205159][JCYJ20190809164 201686][KQTD2016022619584022]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000540938300004

ELSEVIER SCIENCE SA

20201608430452

Organic acids ; Ultraviolet radiation ; Toxicity ; Water treatment ; Antibiotics ; Iron compounds ; Water pollution

Water Treatment Techniques:445.1 ; Water Pollution:453 ; Medicine and Pharmacology:461.6 ; Health Care:461.7 ; Light/Optics:741.1 ; Chemical Reactions:802.2 ; Organic Compounds:804.1

ENGINEERING

2-s2.0-85083236930

Scopus

1.Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Environmental and Chemical Engineering,Shanghai Applied Radiation Institute,Shanghai University,Shanghai,200444,China
3.State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Zhao，Ting,Zheng，Ming,Fu，Caixia,et al. Effect of low-level H2O2 and Fe(II) on the UV treatment of tetracycline antibiotics and the toxicity of reaction solutions to zebrafish embryos[J]. CHEMICAL ENGINEERING JOURNAL,2020,394.

Zhao，Ting.,Zheng，Ming.,Fu，Caixia.,Li，Guanrong.,Xiong，Ying.,...&Zheng，Chunmiao.(2020).Effect of low-level H2O2 and Fe(II) on the UV treatment of tetracycline antibiotics and the toxicity of reaction solutions to zebrafish embryos.CHEMICAL ENGINEERING JOURNAL,394.

Zhao，Ting,et al."Effect of low-level H2O2 and Fe(II) on the UV treatment of tetracycline antibiotics and the toxicity of reaction solutions to zebrafish embryos".CHEMICAL ENGINEERING JOURNAL 394(2020).