Electro-fenton degradation of simulated petroleum wastewater by using Fe78Si9B13 metallic glasses

Abstract

As the standard for the effluent from petroleum wastewater (PW) treatment become more and more strict, we adopt electro-Fenton (EF) oxidation method to degrade the simulated PW to surpass the limitations of conventional methods. The effects of initial pH value, current density, initial oil & grease (O&G) and initial chemical oxygen demand (COD) concentration on the degradation efficiency of the simulated PW were investigated on the premise of putting Fe _78 Si _9 B _13 glassy ribbon as the anode and graphite plate as the cathode, respectively. The results show that under the optimal parameters, the COD and O&G removal rates can reach up to 89.6% and 93.8%, respectively. Compared to the traditional Fenton method, the EF method we used shows the advantages of reducing H _2 O _2 consumption, power consumption, electrode mass loss and electrolysis time.

Keywords

• Fe78Si9B13 amorphous alloy
• simulated petroleum wastewater
• electro-Fenton method
• chemical oxygen demand
• O&G