Production of biodiesel by ultrasound assisted esterification of Oreochromis niloticus oil

被引:82
作者
Santos, Francisco F. P. [1 ]
Malveira, Jackson Q. [2 ]
Cruz, Marcia G. A. [1 ]
Fernandes, Fabiano A. N. [1 ]
机构
[1] Univ Fed Ceara, Dept Engn Quim, BR-60455760 Fortaleza, Ceara, Brazil
[2] NUTEC Fundacao Nucleo Tecnol Ind Ceara, BR-60451970 Fortaleza, Ceara, Brazil
关键词
Methyl ester; Tilapia; Oreochromis niloticus; Esterification; Methanolysis; FREE FATTY-ACIDS; METHYL-ESTERS; PALM OIL; TRANSESTERIFICATION; CONVERSION; CATALYST;
D O I
10.1016/j.fuel.2009.05.030
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper evaluates the production of methyl esters from Oreochromis niloticus (Nile tilapia) oil and methanol. The reaction was carried out applying low-frequency high-intensity ultrasound (40 kHz) under atmospheric pressure and ambient temperature. Response surface methodology (RSM) was used to evaluate the influence of alcohol to oil molar ratio, catalyst concentration (sulfuric acid) and temperature on the yield of O. niloticus oil into methyl esters. Analysis of the operating conditions by RSM showed that the most important operating condition affecting the reaction was the alcohol to FFA molar ratio. The highest yield observed was of 98.2% after 90 min of reaction. The optimal operating condition was obtained applying an alcohol to oil molar ratio of 9.0 and a catalyst concentration of 2.0% w/w and temperature of 30 degrees C. (c) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:275 / 279
页数:5
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