A novel graphene oxide electrode preparation and its performance in the treatment of saline organic wastewater

Abstract

This study uses electrochemical technology to simultaneously remove salt and degrade organic pollutants to achieve green and efficient treatment of high-salt organic wastewater. In this study, graphene oxide (GO), which has excellent conductivity, chemical stability, and catalytic adsorption performance, was selected to prepare a composite electrode, aiming to explore its performance and evaluate its possibility of being used for the degradation of high-salt phenol wastewater treatment. The samples were characterized using SEM, FTIR, and other techniques. The electrochemical performance of the samples was analyzed using an electrochemical workstation, and their practical application performance was explored through simulated wastewater experiments. Experimental results confirmed that among the three electrodes prepared, the CFGE exhibited the lowest system energy consumption and the highest current efficiency, measuring 235.81 kWh/kgCOD and 12.66 % respectively. The HGE electrode is second only to it, with 269.39 kWh/kgCOD and 11.08 % respectively. The SCGE electrode has the worst performance, which is 344.83 kWh/kgCOD and 8.66 % respectively. The Yst of the three electrodes are 0.4083 mg/L∙min, 0.3817 mg/L∙min, and 0.29 mg/L∙min respectively. This study provides new research ideas and solutions for the efficient treatment of high-salt organic wastewater.