Insights into synergistic utilization of residual of ternary layered double hydroxide after oxytetracycline as a potential catalyst for methanol electrooxidation

Oxytetracycline (OTC) is one of the most important antibiotic drugs and it is most commonly used to treat bacterial infections in livestock. In this study, the principal purpose is to define the adsorption mechanisms of removing pharmaceutical pollutant (OTC) on a fabricated catalyst Zn/Co/Fe LDH. For adsorption process, the influence of the adsorbent dose, initial concentration, initial pH and contact time was studied and investigated. Several models of kinetic and isotherm are carried out at pH= 5. The removal percentage of OTC was 100% by Zn/Co/Fe LDH. The maximum adsorption capacity for OTC is 240.29 mg/g. Possible adsorption mechanisms for OTC on the Zn/Co/Fe LDH (001, 010, and 100) surfaces were explored by Monte Carlo simulation. The influence of the waste material was used as active catalyst for supporting the methanol oxidation in fuel cell with high stability in basic medium (KOH). The proposed approach opens up the new avenue for recycling the wastes after adsorption into value-added materials for utilizing in energy production with excellent electrocatalytic performance. (c) 2022 Published by Elsevier Ltd on behalf of Institution of Chemical Engineers.