作者
Pablo Campo, Yuechen Zhao, Makram T Suidan, Albert D Venosa, George A Sorial
发表日期
2007/8/1
期刊
Chemosphere
卷号
68
期号
11
页码范围
2054-2062
出版商
Pergamon
简介
The aerobic biodegradation of five triacylglycerols (TAGs), three liquids [triolein (OOO), trilinolein (LLL), and trilinolenin (LnLnLn)] and two solids [tripalmitin (PPP) and tristearin (SSS)] was studied in water. Respirometry tests were designed and conducted to determine the biochemical oxygen demand (BOD) parameters of the compounds. In the case of the solid lipids, the degradation process was limited by their extremely non-polar nature. When added to water, PPP and SSS formed irregular clumps or gumballs, not a fine and uniform suspension required for the lipase activity. After 30 days, appreciable mineralization was not achieved; therefore, first-order biodegradation coefficients could not be determined. The bioavailability of the liquid TAGs was restricted due to the presence of double bonds in the fatty acids (FAs). An autoxidation process occurred in the allylic chains, resulting in the production of …
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P Campo, Y Zhao, MT Suidan, AD Venosa, GA Sorial - Chemosphere, 2007