Enhancing Fe-C Micro-Electrolysis by Coupling MF with Electrolyte Solution: Mechanism and Application

In this study, Fe-C micro-electrolysis rate enhancement was accomplished by a coupled magnetic field (MF) and Electrolyte solution. The rate of micro-electrolysis of Fe-C materials in pure water solution, NaCl solution, NaH2PO4 solution and Al-2(SO4)(3) solution in the presence of MF was increased by 1.8-6.8 times, and the removal rate of saline organic wastewater was increased by 1.5-4.7 times. The results show that coupling MF with a electrolyte enhances the process of Fe-C micro-electrolysis, and indicates the possible reaction mechanism. SEM and XRD analysis showed that both the electrolyte solution and MF promoted the corrosion of Fe-C materials and accelerated the dissolution of Fe2+. The EDX-mapping results confirmed that MF promotes the accumulation of electrolyte ions on the surface of Fe-C materials. Electrochemical workstation testing showed that the promotion effect of MF in different solutions was different. In addition, MF also enhances the electrolyte activity, reduces the corrosion resistance of Fe-C materials, and improves the local current of Fe-C micro-electrolysis. Moreover, the MF/Fe-C/H2O2 process has good applicability in the treatment of mixed inorganic salt wastewater, and the treatment of saline organic wastewater is more economical and efficient.