The price of cooking oil went up. The supply of WVO from the restaurant we usually get it from went right down, from more than enough to much less than enough (though we also have other sources, so no big problem).
The FFA content went up, doubling from a titration of 0.8 - 1.2 ml 0.1% NaOH solution to 2.0 - 2.35 ml. Also not a problem. So it seems they keep costs stable by using the oil longer. That's probably a common practice. This is quite a good restaurant (you can tell from the previously low titration levels), not very good restaurants will probably keep it going even longer. Again, probably not a big problem for most, all indications are that there's still really a lot of WVO that goes unaccounted for in most of the industrialised countries, though for a couple of years now backyard brewers have been telling of increasing competition for local supplies. In poorer countries though, from what I've seen elsewhere and from what I can gather, there might not be much to spare for diesel motors - people just keep using their oil until it's all used up. Not very good for them, but they might not have much choice. Best Keith _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (70,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
