Journal
CHEMICAL ENGINEERING JOURNAL
Volume 436, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.135244
Keywords
3D flower-like; CoMn2O4; Peroxymonsulfate (PMS); Heterogeneous activation; Tetracycline (TC)
Categories
Funding
- Taiwan Ministry of Science and Technology [109-2222-E-992-002]
- MOST
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A 3D flower-like CoMn2O4 catalyst was synthesized via hydrothermal-calcination technique as peroxymonosulfate (PMS) activator for the remediation of pharmaceuticals, exemplified by antibiotics tetracycline (TC) in aqueous solutions. The CoMn2O4-PMS system showed a broad pH range adaptability and remained efficient under different water matrices. The catalyst exhibited good stability and degradation efficiency, with metal ion dissolution below drinking water standard.
A 3D flower-like CoMn2O4 catalyst was synthesized via hydrothermal-calcination technique as peroxymonosulfate (PMS) activator for the remediation of pharmaceuticals, exemplified by antibiotics tetracycline (TC) in aqueous solutions. TC degradation in the CoMn2O4-PMS system took place over a broad pH range of 5 to 9. Different water matrices (tap water and lake water) did not affect the efficiency of CoMn2O4/PMS system. Multiple uses of CoMn2O4 did not alter the surface properties and catalytic TC degradation efficiency. The dissolution of component metal ions was below the allowable drinking water standard. Carbon oxidation state was increased from -0.51 to 1.2, indicating high degree of mineralization. Non-radical, specifically singlet oxygen, and radical, namely, hydroxyl and sulfate radical, contributed 30.6% and 68.4% to TC degradation, respectively. The CoMn2O4-PMS system was efficient in the degradation of several pharmaceuticals, including tetracycline, SMX, Cipro CIP and BPA.
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