Document Type : Regular Article

Authors

• Ghazi Faisal Naser ¹
• Thamer Jasim Mohammed ²
• Ali H. Abbar ³

¹ Chemical Engineering Department / Al-Muthanna University / Al-samawa City / Iraq

² university of technology-chemical engineering department

³ Department of Biochemical Engineering, Al-Khwarizmi College of Engineering, University of Baghdad, Baghdad, Iraq

Abstract

Petroleum effluent is often made up of a complex combination of metals and organic molecules. In the present work, modeling of a tubular electrochemical reactor (TER) with a novel design operated at batch recycle for petroleum refinery effluent treatment by anodic oxidation was investigated. The reactor is composed from a cylindrical stainless steel cathode and a spiral porous graphite anode at its center. The impact of flow rate on the COD reduction and mass transfer coefficient (k) was studied. Results showed that increasing flow rate led to higher removal efficiency of COD and higher mass transfer coefficient where COD removal of 70% and k with value of 6.283x10-4 cm/s were obtained at flow rate of 4l/min. A power low correlation was obtained between mass transfer coefficient(k) and Reynolds number (Re) with coefficient of determination (R2) equal to 0.994869.This relation can be described as k=1.906x10-6(Re) 0.545 with range of Re 10000≤Re≤ 40000 prevailing turbulent conditions.

Keywords

• Modeling
• mass transfer coefficient
• Electrooxidation
• Tubular Electrochemical Reactor
• Petroleum refinery wastewater