Separations, Journal Year: 2025, Volume and Issue: 12(5), P. 116 - 116

Published: May 3, 2025

Extensive utilization of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) has resulted in contamination aquatic environment; this situation requires effective treatment technology. Ultraviolet-based advanced oxidation processes (UV-AOPs) are widely employed for removal organic contaminants from water. This study’s aim was to compare degradation pesticide 2,4-D UV-C-activated peroxide and peroxydisulfate systems. UV-C irradiation alone exhibited a negligible effect on degradation, whereas addition oxidants significantly enhanced efficiency relative 2,4-D. Complete achieved after 15 min UV/H2O2 treatment, while twice as much time required with UV/S2O82− process. COD decreased by 74% 28% peroxydisulfate, respectively. Both investigated systems demonstrated good performance dechlorination. Pesticide rates increased increasing dosages applied oxidants. Acidic conditions were more favorable 2,4-D, compared neutral basic conditions, both studied. The presence HA, Cl− HCO3− water matrices. predominant radical determined be sulfate radical. These findings fundamental practical significance understanding paving way selection preferred optimal pesticides various aqueous

Language: Английский