HCO3–/CO32– enhanced degradation of diclofenac by Cu(Ⅱ)-activated peracetic acid: Efficiency and mechanism

[Display omitted] •HCO3–/CO32– significantly enhanced the degradation of DCF by Cu(Ⅱ)-activated PAA.•The highest removal efficiency of DCF was obtained at [HCO3–]0: [CO32–]0 = 9:1.•Organic radicals CH3C(=O)O• and CH3C(=O)OO• were mainly responsible for DCF removal.•CuCO3 and CuCO3(OH)− might be the...

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Bibliographic Details
Published in:Separation and purification technology 2021-12, Vol.277, p.119434, Article 119434
Main Authors: Wang, Zhenran, Fu, Yongsheng, Peng, Yunlan, Wang, Shixiang, Liu, Yiqing
Format: Article
Language:English
Subjects:
Bicarbonate/carbonate
Copper ion
Diclofenac
Organic radicals
Peracetic acid
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Summary:[Display omitted] •HCO3–/CO32– significantly enhanced the degradation of DCF by Cu(Ⅱ)-activated PAA.•The highest removal efficiency of DCF was obtained at [HCO3–]0: [CO32–]0 = 9:1.•Organic radicals CH3C(=O)O• and CH3C(=O)OO• were mainly responsible for DCF removal.•CuCO3 and CuCO3(OH)− might be the major Cu(Ⅱ) species to activate PAA.•Effective DCF degradation was achieved at a low Cu(Ⅱ) dose (
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2021.119434