Affiliation:
1. Department of Chemical Engineering, Sant Longowal Institute of Engineering and Technology (Deemed to be University, Under MoE, GoI), Longowal, Sangrur-148106, India
Abstract
Present work analyzes the kinetic study of mineralization during electro-oxidation on Ti/DSA
(Ta2O5-Ir2O5) and combined electro-oxidation and electro-coagulation on stainless steel anode of an
antidiabetic drug metformin hydrochloride (MET-HCl) in synthetic wastewater over a specific charge.
Four different reaction orders (0.5, 1, 1.5 and 2) were tested using the integral analysis method by
plotting TOC concentration terms over specific charges to determine the exact rate kinetics for the
mineralization. The effect of applied current density was evaluated at 50 ppm of sodium sulphate as
supporting electrolyte, and the effect of supporting electrolyte concentration was also assessed at a
current density of 0.93 mA/cm2 in 50 ppm MET-HCl solution. As a result of (i) electro-oxidation
experiments on MET-HCl, carried out on Ti/DSA anode, and (ii) combined electro-oxidation and
electro-coagulation experiments carried out on stainless steel anode, based on the R-squared value of
the mineralization curves, the first-order reaction rate was proposed.
Publisher
Asian Journal of Chemistry