Advanced Method of Purification of Pharmaceutical

The objective of present article is to study the photocatalytic degradation (PCD) of m-chlorophenol present in pharmaceutical wastewater and to avoid the future accumulation of m-chlorophenol in aquatic environment. The degradation of m-chlorophenol of was investigated in presence of commercially available Degussa P-25TiO₂photocatalyst and solar radiation as well as artificial UV irradiation. The effect of different operating parameters like initial concentration of mchlorophenolcatalytic loading, pH of solution, effect of anion and cations on PCD of cipro have been investigated in detail. It was observed that as initial concentration of mchlorophenol increase rate of PCD decreases. Optimum catalytic loading was observed at 1 g/L for m-chlorophenol concentration 0.1gm/l. The influence of pH on the PCD of m-chlorophenol was studied at pH ranging from 3 to 11 and it was found that maximum degradation rate was observed at 9 pH. From kinetic studies, it was found that the PCD obeys pseudo-first order kinetics with reaction rate constant

K_app = 0.02315 min ⁻¹. Pseudo first order rate expression of Langmuir-Hinshelwood as follows.