Title of article :
Biodiesel production from jatropha oil (Jatropha curcas) with high free fatty acids: An optimized process
Author/Authors :
Alok Kumar Tiwari، نويسنده , , Akhilesh Kumar Singh، نويسنده , , Hifjur Raheman، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
7
From page :
569
To page :
575
Abstract :
Response surface methodology (RSM) based on central composite rotatable design (CCRD) was used to optimize the three important reaction variables—methanol quantity (M), acid concentration (C) and reaction time (T) for reduction of free fatty acid (FFA) content of the oil to around 1% as compared to methanol quantity (M′) and reaction time (T′) and for carrying out transesterification of the pretreated oil. Using RSM, quadratic polynomial equations were obtained for predicting acid value and transesterification. Verification experiments confirmed the validity of both the predicted models. The optimum combination for reducing the FFA of Jatropha curcas oil from 14% to less than 1% was found to be 1.43% v/v H2SO4 acid catalyst, 0.28 v/v methanol-to-oil ratio and 88-min reaction time at a reaction temperature of 60 °C as compared to 0.16 v/v methanol-to-pretreated oil ratio and 24 min of reaction time at a reaction temperature of 60 °C for producing biodiesel. This process gave an average yield of biodiesel more than 99%. The fuel properties of jatropha biodiesel so obtained were found to be comparable to those of diesel and confirming to the American and European standards.
Keywords :
optimization , CCRD , pretreatment , transesterification , RSM , free fatty acid
Journal title :
Biomass and Bioenergy
Serial Year :
2005
Journal title :
Biomass and Bioenergy
Record number :
407757
Link To Document :
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