Electrocoagulation of vegetable oil refinery wastewater using aluminum electrodes

Electrocoagulation with aluminum electrodes was used to treat the vegetable oil refinery wastewater (VORW) in a batch reactor. The effects of operating parameters such as pH, current density, PAC (poly aluminum chloride) dosage and Na 2SO 4 dosage on the removal of organics and COD removal efficienc...

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Bibliographic Details
Published in:Journal of environmental management 2009, Vol.90 (1), p.428-433
Main Authors: Tezcan Un, Umran, Koparal, A. Savas, Bakir Ogutveren, Ulker
Format: Article
Language:English
Subjects:
Aluminum
Aluminum sulfate
Animal, plant and microbial ecology
Applied ecology
Applied sciences
Biological and medical sciences
Coagulation
COD
Conservation, protection and management of environment and wildlife
Effects
Electricity
electrochemistry
Electrocoagulation
Electrocoagulation - methods
Electrodes
Equipment Design
Exact sciences and technology
food processing wastes
Fundamental and applied biological sciences. Psychology
General aspects
Kinetics
PAC
Plant Oils - isolation & purification
Pollution
Reactors
Refinery
Sulfates
Vegetable oil
Vegetable oils
Waste Disposal, Fluid - instrumentation
Waste Disposal, Fluid - methods
Wastewater
wastewater treatment
Wastewaters
Water Purification
Water treatment and pollution
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Summary:Electrocoagulation with aluminum electrodes was used to treat the vegetable oil refinery wastewater (VORW) in a batch reactor. The effects of operating parameters such as pH, current density, PAC (poly aluminum chloride) dosage and Na 2SO 4 dosage on the removal of organics and COD removal efficiency have been investigated. It has been shown that the removal efficiency of COD increased with the increasing applied current density and increasing PAC and Na 2SO 4 dosage and the most effective removal capacity was achieved at the pH 7. The results indicate that electrocoagulation is very efficient and able to achieve 98.9% COD removal in 90 min at 35 mA cm −2 with a specific electrical energy consumption of 42 kWh (kg COD removed) −1. The effluent was very clear and its quality exceeded the direct discharge standard.
ISSN:0301-4797
1095-8630
DOI:10.1016/j.jenvman.2007.11.007