Dynamic model of organic pollutant degradation in three dimensional packed bed electrode reactor

• Published in: Chemosphere (Oxford) 2018-09, Vol.206, p.107-114
• Main Authors: Pang, Tianting, Wang, Yan, Yang, Hui, Wang, Tianlei, Cai, Wangfeng
• Format: Article
• Language: English
• Subjects: Activated carbon; Dynamic model; Electro-oxidation; Phenol; Three-dimensional packed bed electrode
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/j.chemosphere.2018.04.118

A dynamic model of semi-batch three-dimensional electrode reactor was established based on the limiting current density, Faraday's law, mass balance and a series of assumptions. Semi-batch experiments of phenol degradation were carried out in a three-dimensional electrode reactor packed with activated carbon under different conditions to verify the model. The factors such as the current density, the electrolyte concentration, the initial pH value, the flow rate of organic and the initial organic concentration were examined to know about the pollutant degradation in the three-dimensional electrode reactor. The various concentrations and logarithm of concentration of phenol with time were compared with the dynamic model. It was shown that the calculated data were in good agreement with experimental data in most cases. •A three-stage organic degradation dynamics model was deduced.•Dynamics model relies on the mass transfer coefficient and limit current density.•The experiments verify that the kinetics of organic degradation is not a simple first-order.