Hello Francisco
Dear Mr. Addison:
No need to be so formal Francisco.
Lets suppose that an oil/fat with a high content of Free Fatty Acids ( > 15%) is available, is it true that FFA present in it can be "esterifyed" using an acid (H2SO4) as catalyst in conjunction with the chosen alcohol, plus heat, stirring, etc...?
Yes.
Assuming that "esterification" of FFA is achieved... Under such treatment I wonder what may happen to the oil/fat that is also present, could you please elaborate on it?.
You'd use a two-stage process, first acid esterification followed by base transesterification (preferably using KOH rather than NaOH).
See these previous messages on processing high-FFA oils (links to the whole thread are at the end of the messages):
http://www.mail-archive.com/biofuel@sustainablelists.org/msg49913.html Re: [biofuels-biz] Foolproof process http://www.mail-archive.com/biofuel@sustainablelists.org/msg48215.html Re: [biofuels-biz] High FFA oils - another way http://www.mail-archive.com/biofuel@sustainablelists.org/msg48086.html Re: [biofuels-biz] Re: hi ffa feed stocks Best wishes Keith
Thanks in advance, Francisco
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