Abstract
The current work examines UV/Sulfite/ZnO (USZ) in reactor convectional (without baffles) and baffled photocatalytic reactors (BPCR) in order to cost-effectively photo-degrade trimipramine (TIR). The ideal conditions were 2:1:100 Sulfite/ZnO/TRI molar ratio, pH 7, and 30 min of reaction time for 97.4% TRI degradation. In the BPCR reactor, the measured rate constant (kobs) and reaction rate (robs) both rise by around 17% and 50% as the TRI concentration is increased from 50 to 200 mgL−1. The intermediate materials formed in three cases were examined by copper LC. Investigations showed that after 30 min, most of the intermediates became simple linear compounds such as hexane-1, 6-diol (C6H14O2), formaldehyde (CH2O), (E)-prop-1-en-1-yl-l2-azane (C3H6N), acetic acid C2H4O2. Electrical energy consumption (EEO) decreased from 8.61 kWhm3 for convectional reactor to 5.37 kWhm3 for BPCR due to an increase in kobs and robs, for example, 200 mg L−1. As a result, the total cost of the system (TCS) decreased from 3.56 for convectional reactor to 1.22 $ for PCBR reactor. According to information gathered, the UZS procedure lowers the BOD and COD levels by 66 to 86.29% in 80-min reaction time, respectively. Additionally, the BOD/COD ratio starts out at 0.26 and increases to 0.6 after 30 min.
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