Trimipramine Photo-Degradation in the Photo-Catalyst Baffled Reactor’s UV/Sulfite/ZnO Redox Reaction System

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 (k obs ) and reaction rate (r obs ) 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 (C 6 H 14 O 2 ), formaldehyde (CH 2 O), (E)-prop-1-en-1-yl-l2-azane (C 3 H 6 N), acetic acid C 2 H 4 O 2 . Electrical energy consumption (E EO ) decreased from 8.61 kWhm 3 for convectional reactor to 5.37 kWhm 3 for BPCR due to an increase in k obs and r obs , 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.