Efficient purification of tetracycline wastewater by activated persulfate with heterogeneous Co-V bimetallic oxides
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Author(s)
Yang, Guanrong
Li, Jie
Zhang, Shanqing
Fang, Yueping
Peng, Feng
Zhang, Shengsen
Qiu, Rongliang
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Abstract
The persistence and wide dispersion of antibiotics have a severe impact on the ecological environment. Developing an effective method with universal applicability to remove pollutants is pretty necessary. Herein, a bimetallic oxides (Co3V2O8) heterogeneous material was successfully prepared and used to activate the persulfate (PS) for purification of tetracycline (TC) wastewater. By exploring the reaction conditions and influencing factors, the removal rate of 50 mg⋅L-1 TC reached 87.1% by Co3V2O8/PS system, and the reaction rate constant was up to 0.0271 min−1. As a highly efficient catalyst for the activation of PS, Co3V2O8/PS system produces radicals of SO4•−, •OH, •O2– and 1O2 in the reaction process due to the Co(II) and V(IV) exchange electrons with S2O82- and O2. Simultaneously, the internal electron exchange occurs between Co(II)/Co(III) and V(IV)/V(V), which stabilizes the content of Co(II) and V(IV). This work provides a novel activator for PS activation to degrade contaminants and contributes to a better understanding of the PS activation mechanism by transition compound.
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Journal of Colloid and Interface Science
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619
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LP120100492
LP0775226
FT0991554
DP0666561
DP170103721
DP210103266
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Chemical sciences
Engineering
Physical sciences
Science & Technology
Physical Sciences
Chemistry, Physical
Chemistry
Co3V2O8
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Xu, C; Yang, G; Li, J; Zhang, S; Fang, Y; Peng, F; Zhang, S; Qiu, R, Efficient purification of tetracycline wastewater by activated persulfate with heterogeneous Co-V bimetallic oxides, Journal of Colloid and Interface Science, 2022, 619, pp. 188-197