Electrolytic regeneration of granular activated carbon saturated with diclofenac using BDD anodes
By Alvarez-Pugliese, Christian E.; Acu
Published in Diamond and Related Materials
2019
Abstract
Electrolytic regeneration of granular activated carbon (GAC) saturated with diclofenac (DCF) was studied using boron-doped diamond (BDD) and stainless-steel electrodes as the anode and cathode, respectively, in a cell with saturated GAC packed in the cathodic compartment and 0.100 dm3 1 M Na2SO4 as the supporting electrolyte. The adsorption capacity of a commercial GAC was evaluated. The electrolytic regeneration was evaluated using current densities of 5, 12.5 and 20 mA cm?2 for 5, 7.5 and 10 h. The best first cycle results were obtained with 20 mA cm?2 and 5 h, with a regeneration efficiency of 66%. In addition, during the second to fifth regeneration cycles the regeneration efficiency increased to 87
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