Hello Sty
Dear Sir,
I have a question tobe solved by the experts in this forum.
Everybody is still learning.
In biodiesel production with acid-base process, is it a limitation
of FFA content without water separation (produced by esterification
stage) before entering the base-process (trans-esterification).
Some people say so, others say not so. I say not so, but it depends
how you do it. The acid-base process is very flexible and there are
lots of ways of adjusting it. High-quality biodiesel can be produced
both ways.
If I use feed-stock with 5 - 10% FFA content without water
separation, what would be happen in the tran-esterification. Will it
reduce the conversion or product quality?
Same answer as above.
There's the same kind of situation with whether you need to titrate
the fuel after acid esterification to determine how much base is
required for transesterification. Some say yes, others say no. Other
people say it requires more than a simple titration. But high-quality
biodiesel can be produced both ways.
Start off with what's simplest, which is the original method Aleks
Kac describes:
http://journeytoforever.org/biodiesel_aleksnew.html
Foolproof biodiesel process: Journey to Forever
This works well just as it is for most people most of the time.
If it doesn't work well for you, then do controlled tests with small
test batches, changing the variables one at a time, with wash tests
and the other quality checks to test the results, you can include
water separation or not, and perhaps titration or not.
Here are some other ways of doing it:
http://snipurl.com/pxp3
Re: [Biofuel] acid/base method for conversion of wvo to FAMEs
Read the whole message. There's a lot more about this in the list archives.
Already we have at least four ways, Aleks's original, Todd's method,
Bob's method, I use a different way, and if you check out Michael
Allen's work with high FFA oils in the archives (crude palm oil)
that's a fifth way. There are several more ways people have told me
about. All different, all have high-quality results.
Some people talk a lot of nonsense about the acid-base method. Some
of them get very dogmatic about it and angrily insist that it has to
be titrated or whatever, their way is the only way and so on. But if
you scratch them a little you find they don't actually use the
acid-base method themselves for one reason or another. In other words
they're talking through their hats. Don't believe everything you hear.
Keep going and I'm sure you'll find a good way of using the acid-base
method that suits you and produces good results. Then, if you like,
you can share it with the rest of us.
Hope this helps.
Best
Keith
Best regards
Sty
Indonesia
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