Abstract

Ali Reza Rahmani, Mohammad Taghi Samadi, Mohammad Reza Samarghandi and Ghasem Azarian

DOI : http://dx.doi.org/10.13005/ojc/340219

This present study aims to reveal the performance of Ti/Ni-Sb-SnO₂ inlimiting oxygen evolution and increasing electrochemical O₃ production (EOP) and phenol removal. First, the effect of important variables such as current density (CD), charge passed and electrolyte type on the modified electrodes was investigated. Then, phenol removal by Ti/Ni-Sb-SnO₂ was studied using the effect of CD, retention time and phenol concentration. The results revealed that for building the electrodes of Ti/Ni-Sb-SnO_2, CD of 3.9mA/cm² and passed charge of 180mC were obtained. The performance of ozone generation in HClO₄ is by far more than that of H₃PO₄, H₂SO₄ and HCl. At the initial concentration of 1, 3, 6 and 10 mM, phenol was decomposed by 99.9% approximately in current densities of 61.5, 76.9, 92.3 and 123.1 mA/cm² and contact time of 150, 250, 350, and 400 min, respectively.

Phenolic Wastewater; Electrochemical Treatment; Modified Electrode; Constant Electrolysis

[ View HTML Full Text]