Journal
OPTIK
Volume 239, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2021.166673
Keywords
Photocatalytic; Degradation; Mineralization; p-hydroxybenzoate; Synergistic effect
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Funding
- Khoy University of Medical Sciences [IR.KHOY. REC.1398.001]
- Ministry of Health [IR.KHOY. REC.1398.001]
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The synergistic effect of O3 and H2O2 on the UVC/ZnO (UZ) catalytic degradation of Butyl p-hydroxybenzoate (BuP) was investigated in this study, showing enhanced degradation and mineralization rates compared to individual treatments with UH and UZO processes.
The present study was aimed to investigate on the synergistic effect of O3 and H2O2 on the Butyl p-hydroxybenzoate (BuP) photo-catalytic degradability by UVC/ZnO (UZ). To this purpose, degradability of BuP by UZ was studied in the presence and the absence of H2O2 and O3. The maximum performances of BuP degradation by UVC/ZnO (UZ), UVC/ZnO/H2O2 (UZH) and UVC/ ZnO/O3 (UZO) after 15 min of reaction were achieved 38.12 %, 100 % and 96 %, respectively. Also, the observed rates of BuP degradation (robs (mg L-1 min)) by the, UZ, UZH and UZO were 0.21, 13.65 and 10.95 mg L-1 min, respectively. The values of energy consumption (EEO) for UZ, UZH and UZO in the removal of BuP were calculated 86.35 kW h m-3, 7.5 kW h m-3 and 12.8 kW h m-3, respectively. The maximum mineralization of BuP by UZH and UZO processes (under optimum operational conditions) were 37 % and 30 %, respectively.
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