Production of alkyl esters from tallow and grease using lipase immobilized in a phyllosilicate sol-gel

被引:80
作者
Hsu, AF [1 ]
Jones, K [1 ]
Marmer, WN [1 ]
Foglia, TA [1 ]
机构
[1] ARS, USDA, ERRC, Wyndmoor, PA 19038 USA
关键词
alkyl esters; biodiesel fuel; grease; immobilization; phyllosilicate; sol-gel; tallow; transesterification;
D O I
10.1007/s11746-001-0308-x
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The lipase-catalyzed synthesis of alkyl esters from tallow and grease using Pseudomonas cepacia lipase (PS-30) immobilized within a phyllosilicate sol-gel matrix was investigated. The effects of the presence of alcohol and of the amount of enzyme used were studied. The matrix-immobilized PS-30 lipase effectively converted grease and tallow to ethyl esters in greater than 95% yield when using ethanol. The final conversion of grease or tallow to alkyl esters was aided by the addition of molecular sieves (0.4 wt% of substrates) to the reaction mixture. The matrix-immobilized PS-30 enzyme was easily recovered and could be reused at least five limes without losing its activity. Accordingly, the phyllosilicate sol-gel immobilized PS-30 lipase is potentially useful for the economic production of biodiesel fuel.
引用
收藏
页码:585 / 588
页数:4
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