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KMID : 0613820030130060917
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Journal of Life Science
2003 Volume.13 No. 6 p.917 ~ p.923
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Biological Treatment on Wastewater of Soluble Metal Working Fluids
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Cha Mi-Sun
Han Chang-Min
Park Geun-Tae
Cho Soon-Ja
Son Hong-Joo
Lee Sang-Joon
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Abstract
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The present investigation was conducted to determine the chemical oxygen demand (COD) removal efficiency by Pseudomonas aeruginosa EMS1. The COD removal efficiency in the medium containing 1% metal working fluid (MWF) was 12% after cultivation of 4 days. The composition of optimum medium for the COD removal efficiency of 1% MWF by P. aeruginosa EMS1 were NH₄Cl 0.3%, K₂HPO₄ 0.05%, KH₂PO₄ 0.04%, MgSO₄ㆍ7H₂O 0.05%, CaCl₂ㆍ2H₂O 0.03%, and FeSO₄ㆍ7H₂O 0.04% at initial pH 7.0 and 30℃. Under this condition, the highest the COD removal efficiency was observed after 4 days.
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KEYWORD
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metal working fluid, COD, biodegradation, Pseudomonas aeruginosa
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