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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Veröffentlicht in: | Journal of environmental management 2009, Vol.90 (1), p.428-433 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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. |
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ISSN: | 0301-4797 1095-8630 |
DOI: | 10.1016/j.jenvman.2007.11.007 |