Journal
ULTRASONICS SONOCHEMISTRY
Volume 75, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2021.105615
Keywords
Advanced oxidation processes; ZnO; Diclofenac; Piezo-enhanced photodegradation; Mineralization; Transformation products
Categories
Funding
- Velux Stiftung Foundation [1381]
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This study demonstrated the first realization of diclofenac degradation using a piezo-enhanced sonophotocatalytic approach based on ZnO, showing strong synergistic effects in mineralization process with suitable ZnO morphologies. Experimental results in a complex water matrix indicated that this method could be a promising alternative to traditional degradation approaches for the remediation of real water matrices.
The degradation of diclofenac has been realized for the first time by a piezo-enhanced sonophotocatalytic approach based on ZnO. The sonophotocatalytic degradation showed a slight enhancement in the degradation of the parent compound, whereas strong synergistic effects were observed for the mineralization process when suitable ZnO morphologies are used, reaching 70% of complete degradation of 25 ppm diclofenac using 0.1 g/L ZnO in 360 min. Tests in a complex water matrix show enhanced diclofenac removal, outperforming a TiO2 benchmark photocatalyst. These promising experimental results promote this process as a good alternative to traditional degradation approaches for remediation of real water matrices.
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