Abstract
In this work, kinetic and mechanistic study of photochemical degradation of 4-chlorophenol (4-CP) with UV lamp of 6 W, 12 W, 18 W, and peroxy acetic acid (PAA) oxidant was estimated. The differential method was evaluated by fractional order of reaction for both UV and UV/PAA processes. Overall and initial reaction rate constants were evaluated using integral method. Reaction rate increases with UV input and PAA concentration and it decreases with the increase in 4-CP concentration. Samples were analyzed by HPLC, UV spectrophotometer, and GC-MS for residual concentration and identification of degraded products. The degradation compounds are identified and probable mechanism of reaction is established.
Acknowledgments
The authors wish to thank SAIF, Indian Institute of Technology, Mumbai for their GC-MS analysis support for this research.