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The Effects of Environmental Factors on Biodegradability Test for Lubricant Products  

Cho, Eun-Hye (Dept. of Food and Biotechnology, and Center for Function and Safety, Hoseo University)
Park, Keun-Hyoung (Dept. of Food and Biotechnology, and Center for Function and Safety, Hoseo University)
Han, Seung-Ock (Dept. of Chemical Engineering, The University of Seoul)
Kim, Eui-Yong (Dept. of Chemical Engineering, The University of Seoul)
Ryu, Jae-Sang (Korea Testing and Research Institute)
Jang, Sun-Bok (Korea Testing and Research Institute)
Lee, Un-Gi (Korea Testing and Research Institute)
Chae, Hee-Jeong (Dept. of Food and Biotechnology, and Center for Function and Safety, Hoseo University)
Publication Information
KSBB Journal / v.23, no.4, 2008 , pp. 285-290 More about this Journal
Abstract
Various methods (OECD 301B, ISO 9439 and ASTM 5864) for biodegradability test of lubricants were reviewed, and a standard procedure was developed. Most lubrication products are released in rivers or sea then is degraded by microbial action in aerobic condition. Most international method are based on $CO_2$ evolution test. Inoculum obtained from a sewage disposal plant and test compound are cultivated in a mineral medium. Organic carbon of the test compound is degraded and oxidized through the enzymatic actions of inoculum, and ultimately mineralized to carbon dioxide. Biodegradability test conditions of lubricant oils were optimized. The highest biodegradability was achieved when the same medium as in ASTM 5864 and inoculum concentration of $10^4{\sim}10^5$ cell/L were used. The optimum standard materials were selected as aniline and sodium acetate. Additionally the effects of inoculum type on microbial growth and biodegradability were examined. Finally the standard operating procedure (SOP) for biodegradability test method was proposed.
Keywords
Biodegradability; lubricant;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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