As seen in Table 1, the acid value of corn oil is below
2 mg KOH g1 which is enough to use an alkaline catalyst for
transesterification reaction. The ingredient amounts used in the
transesterification for the corn oil were 7.7 kg methanol, 35 kg corn
oil (6:1 M ratio) and 0.35 kg KOH (1% of oil by weight). Reaction
time and temperature were 2 h and 60 C, respectively. The reaction
parameters were selected by considering the previous studies
(Alptekin and Canakci, 2008a, 2009). Mean molecular weight of
corn oil was found to be about 875 g mol1 calculated from the
fatty acid composition. The fatty acid composition for each oil
and methyl ester can be seen in Table 2. Ester yield is calculated
by dividing the ester amount to the corn oil amount used for
transesterification. After transesterification and purification
process, the ester yield was found to be 91% on mass. This value
is slightly lower than the value obtained in the laboratory
As seen in Table 1, the acid value of corn oil is below2 mg KOH g1 which is enough to use an alkaline catalyst fortransesterification reaction. The ingredient amounts used in thetransesterification for the corn oil were 7.7 kg methanol, 35 kg cornoil (6:1 M ratio) and 0.35 kg KOH (1% of oil by weight). Reactiontime and temperature were 2 h and 60 C, respectively. The reactionparameters were selected by considering the previous studies(Alptekin and Canakci, 2008a, 2009). Mean molecular weight ofcorn oil was found to be about 875 g mol1 calculated from thefatty acid composition. The fatty acid composition for each oiland methyl ester can be seen in Table 2. Ester yield is calculatedby dividing the ester amount to the corn oil amount used fortransesterification. After transesterification and purificationprocess, the ester yield was found to be 91% on mass. This valueis slightly lower than the value obtained in the laboratory
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