Comparison of Electrochemical Treatment of Petroleum Refinery Effluents Using Electrooxidation, Electrocoagulation and Electrophenton Process

Abstract

Large amount of water are required for petroleum refinery activity and consequently produced larger volumes of effluents. Wastewater treatment is an important process before discharge these water into drainage system. In this work, several advanced electrochemical petroleum refinery effluents treatment approaches including direct electrochemical oxidation, indirect electrochemical oxidation, electrophenton process and electrocoagulation, were studied by using different electrode materials. Phenol and COD removal were used for estimated the performance of each method. Study showed almost all method could be effectively used for petroleum refinery effluents treatment except the electrocoagulation.

Iron removal, energy consumption and operating cost of electrocoagulation of drinking water using a new flow column reactor

“…The electrode material is selected depending on many parameters such as cost, oxidation potential, and targeted pollutant. Although different materials such as steel (Genc and Bakirci, 2015), graphite (Gao et al, 2013), zinc (Vasudevan et al, 2012b), and iron (Ye, 2016), have been used as electrodes in the EC reactors, it has been reported that iron and aluminium are the most effective and successful electrode materials (Chaturvedi and Dave, 2012).…”

Optimization of process parameters for the electrochemical oxidation treatment of petroleum refinery wastewater using porous graphite anode

“…Souza and Ruotolo [37] used Boron Doped Diamond anode (BDD), while Santos et al, [38] used Ti/RuO2 anode in their works. Song and Ning [39] [40] investigated the treatment of petroleum refinery wastewater using PbO2 anode. All the above electrodes have many advantages and drawbacks depending on the type of oxidation and the composition of contaminants The present study reports an indirect anodic oxidation process for treating a petroleum refinery wastewater generated from Al-Diwaniyah petroleum refinery plant using a porous graphite with a high specific surface area as an anode material and application the design of experiments as an optimization method.…”

Electrooxidation of Phenol on Boron-doped Diamond and Mixed-metal Oxide Anodes: Process Evaluation, Transformation By-products, and Ecotoxicity

“…Two independent studies of five different electrochemical treatments showed that electro-Fenton was the most efficient, followed by direct EO with BDD on Nb substrate anode which showed better results than MMO (Ru-MMO) anode. 17,21 Phenol removal of >99% was obtained in direct EO at the current density of 5 mA cm −2 for 40 min. A comparison of BDD on Si substrate and PbO 2 anodes was also performed on the basis of measurements of total organic carbon and chemical oxygen demand (COD) in reactor with electrolyte recirculation.…”

“…EO has been investigated as possible treatment technology for phenol degradation in several studies. [7][8][9][12][13][14][15][16][17][18][19]21 For example, a study of EO in batch reactor using different MMO anodes (Ti/Pt, Ti/IrO 2 -Ta 2 O 5 , Ti/Ta 2 O 5 -SnO 2 -IrO 2 , Ti/RuO 2 and Ti/IrO 2 -RuO 2 ) in Na 2 SO 4 supporting electrolyte showed that Ti/Pt anode was the most effective (99.5%). Ti/RuO 2 and Ti/IrO 2 -RuO 2 also showed high efficiency of 84%-87% after 8 h of treatment.…”