Electrochemical treatment of chemical oxygen demand in produced water using flow‐by porous graphite electrode

Produced water is the largest wastewater stream generated in the oil and gas industries. In this study, experiments were carried out using a bench‐scale electrochemical cell using flow‐by porous graphite electrode, for oxidation of organic matter in produced water which was collected from natural ga...

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Bibliographic Details
Published in:Water and environment journal : WEJ 2018-08, Vol.32 (3), p.404-411
Main Authors: Abdel‐Salam, Omar E., Abou Taleb, Enas M., Afify, Ahmed A.
Format: Article
Language:English
Subjects:
anodic oxidation
Chemical oxygen demand
Current density
Electrochemical cells
Electrodes
Energy consumption
Flow velocity
flow‐by
Gas processing
Graphite
Industry
Influents
Natural gas
Oil and gas industry
Organic chemistry
Organic matter
Oxidation
porous electrode
produced water
Removal
treatment
Wastewater
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Summary:Produced water is the largest wastewater stream generated in the oil and gas industries. In this study, experiments were carried out using a bench‐scale electrochemical cell using flow‐by porous graphite electrode, for oxidation of organic matter in produced water which was collected from natural gas processing field (real sample). The effect of anodic current density and influent feed flow rate on chemical oxygen demand (COD) removal efficiency, and energy consumption were investigated. The maximum removal efficiency of 66.52% was obtained for a flow rate of 50 mL/min, current density of 1.41 mA/cm2 and pH of 7.3 for an influent COD of 2845 mg O2/L. The energy consumption at these conditions was 2.12 kWh/kgCOD.
ISSN:1747-6585
1747-6593
DOI:10.1111/wej.12336