Paper Title
Kinetic and thermodynamic studies of oxidative degradation of chloro-derivatives of phenol in aqueous phase by classic fenton and photo-fenton processes
Article Identifiers
: Keywords
AOP, Classic Fenton, UV-Fenton, Fenton-like, UV-Fenton-like, Degradation, Chlorophenols, Reaction Kinetics, Thermodynamic parameters.
Abstract
Abstract : Fenton oxidation offers itself as plausible treatment technology for complete removal or reduction of concentration of priority organic pollutants within permissible limits specified by environmental protection agencies. In the present investigation classic and UV assisted Fenton and Fenton-like oxidation of some chlorophenols have been studied. Experiments were carried out in a batch scale laboratory photoreactor to evaluate the kinetic and thermodynamic parameters. These studies show that maximum degradation of chlorophenols took place at pH = 3, initial chlorophenol concentration = 3x10-4 mol/L, H2O2/COD = 3.5, [H2O2] = 1.7 mol/L and Fe++/Fe+++ = 0.0093 mmol/L. The concentration decay profile could be better described by the pseudo-first-order model. The energy of activation of both Fenton and Fenton like process for 2CP and 4CP are very small as compared to the activation energy for noncatalytic oxidation of phenol in aqueous solution indicating a rapid degradation reaction path having very low energy of activation. The positive ∆H⧣ values indicating that an external source of energy is required to raise the energy level of reactants for the formation of transition state. The negative values of entropy of activation indicate at a more ordered and rigid transition state then the ground state. The oxidative degradation rate constants obtained are of the order of ≈ 8x10-4 sec-1 at 298 K and Gibbs free energy of activation ΔG# values around 80 kJ/mol-1 implying a reaction with half life of t1/2 ≈ 15 - 20 min and corresponds to a typical reaction that proceeds to completion within few hours.
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How To Cite (APA)
Mayur M. Yenkie, Dr. Pratibha S. Agrawal , & Dr. M.G. Bhotmange (January-2023). Kinetic and thermodynamic studies of oxidative degradation of chloro-derivatives of phenol in aqueous phase by classic fenton and photo-fenton processes. INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT, 8(1), c203-c210. https://ijnrd.org/papers/IJNRD2301227.pdf
Issue
Volume 8 Issue 1, January-2023
Pages : c203-c210
Other Publication Details
Paper Reg. ID: IJNRD_186220
Published Paper Id: IJNRD2301227
Downloads: 000122254
Research Area: Chemistry
Author Type: Indian Author
Country: Nagpur, Maharashtra, India
Published Paper PDF: https://ijnrd.org/papers/IJNRD2301227.pdf
Published Paper URL: https://ijnrd.org/viewpaperforall?paper=IJNRD2301227
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