Re: [Biofuel] grease trap waste
Hello Manuel, the FFA value does not alter the net heat value, but high FFA oils are usually quite corrosive. And - oil from grease traps may also contain mineral oils and other fatty substances. Good luck to you AGERATEC AB Jan Warnqvist - Original Message - From: manuel cilia [EMAIL PROTECTED] To: Biofuel@sustainablelists.org Sent: Wednesday, December 14, 2005 1:45 PM Subject: [Biofuel] grease trap waste Has anyone has any experience with grease trap waste. I am looking into an idea of collecting grease trap waste and seperating the water from the grease, then heating the grease to a level where it can be filtered and used in gas turbines while the water is cleaned up and use for irrigation I know grease trap waste is very high in FFA but does this atler it total energy value or just its gelling point. - Original Message - From: Joey Hundert [EMAIL PROTECTED] To: Biofuel@sustainablelists.org Sent: Wednesday, December 14, 2005 8:33 PM Subject: Re: [Biofuel] Widescale Biodiesel Production from Algae byMichaelBriggs Todd, Please forgive the fact that I'm about to post a previous thread into this one, however, the archives don't seem to be working tonight. The following is Keith's last post on this issue. Subj: RE: Algae - was Re: [Biofuel] Gasoline Prices Todd, if you keep a good personal archive, please also note the thread the bad news about biodiesel http://www.mail-archive.com/biofuel@sustainablelists.org/msg58130.html as it also has some kernels. -Joey Hello Craig Hello Keith, I've been doing a bit of research on microalgae production for energy and found there is some research going on around the world in various places. The NREL's 'Aquatic Species Program' research closed in the mid 1990's due, among other things, to pressure for DOE funding and the decision to focus their research budgets on ethanol production. Were those the only reasons? I thought there were some negative reasons about algae too, could always be wrong though. Also in the 1990's the Japanese took the idea on in a big way, spending more than $250 million on research into hi-tec bioreactors with optical fiber devices etc but found they were too expensive to be economical. I believe research is continuing there but on a smaller scale; I haven't heard of any such research here, and I'm a bit sceptical. As with biodiesel itself - it's quite easy to get the impression that there's lots of fancy stuff going on here, especially if you listen to several quite noisy people, and there are indeed some fancy Japanese patents, but in fact biodiesel hardly exists here, some (or most) of the few projects that do exist are very bad, to the extent that emissions tests for exemption from the restrictions of the anti-diesel campaign here (Tokyo and some other places) will no longer allow biodiesel because they've found it's so badly made it wrecks the machinery. Tests of our biodiesel have shown it would pass and wouldn't mess up any machinery, but they made a blanket rule: NO biodiesel, great, thanks guys. More and more people are making their own now, since we got involved (not boasting, that's what's happened), high-quality fuel, but it doesn't count, too bad. Same with ethanol, lots of good research, lots of schemes, but nothing happens. Yet. China and Israel are also leaders in applied phycology and have done work on biofuels from algae. Michael Briggs, of UNH, and his team are currently focusing on enclosed systems where the algae will process wastewater too. Have they made any biodiesel from it yet? John Benemann, who was involved in the NREL research, is now an independent consultant and heading up an international network who are researching into it: their website gives a good overview Thanks, I'll take a look. http://www.co2captureandstorage.info/networks/Biofixation.htm . http://www.co2captureandstorage.info/networks/documents/01roadmp.pdf Other links... NREL research http://www.nrel.gov/docs/fy04osti/34796.pdf http://govdocs.aquake.org/cgi/reprint/2004/915/9150010.pdf Further studies http://www.unh.edu/p2/biodiesel/pdf/algae_salton_sea.pdf http://europa.eu.int/comm/research/energy/pdf/36_qingyu_wu_en.pdf Discussion forum exchanges http://biodiesel.infopop.cc/eve/ubb.x?a=tpcs=447609751f=719605551m =932606061r=932606061#932606061 Um... (burp), no thanks. http://forums.biodieselnow.com/topic.asp?TOPIC_ID=3153. http://forums.biodieselnow.com/topic.asp?TOPIC_ID=3414whichpage=1 http://groups.yahoo.com/group/oil_from_algae/ Algal biodiesel plant planned for California?? (I don't know anything more about it) http://www.bfi.org/Trimtab/spring02/biodiesel.htm US Company making algal biodiesel from power station gases http://www.greenfuelonline.com/index.htm I find the last link particularly interesting. My only problem with it - and with John
[Biofuel] grease trap waste
Has anyone has any experience with grease trap waste. I am looking into an idea of collecting grease trap waste and seperating the water from the grease, then heating the grease to a level where it can be filtered and used in gas turbines while the water is cleaned up and use for irrigation I know grease trap waste is very high in FFA but does this atler it total energy value or just its gelling point. - Original Message - From: Joey Hundert [EMAIL PROTECTED] To: Biofuel@sustainablelists.org Sent: Wednesday, December 14, 2005 8:33 PM Subject: Re: [Biofuel] Widescale Biodiesel Production from Algae byMichaelBriggs Todd, Please forgive the fact that I'm about to post a previous thread into this one, however, the archives don't seem to be working tonight. The following is Keith's last post on this issue. Subj: RE: Algae - was Re: [Biofuel] Gasoline Prices Todd, if you keep a good personal archive, please also note the thread the bad news about biodiesel http://www.mail-archive.com/biofuel@sustainablelists.org/msg58130.html as it also has some kernels. -Joey Hello Craig Hello Keith, I've been doing a bit of research on microalgae production for energy and found there is some research going on around the world in various places. The NREL's 'Aquatic Species Program' research closed in the mid 1990's due, among other things, to pressure for DOE funding and the decision to focus their research budgets on ethanol production. Were those the only reasons? I thought there were some negative reasons about algae too, could always be wrong though. Also in the 1990's the Japanese took the idea on in a big way, spending more than $250 million on research into hi-tec bioreactors with optical fiber devices etc but found they were too expensive to be economical. I believe research is continuing there but on a smaller scale; I haven't heard of any such research here, and I'm a bit sceptical. As with biodiesel itself - it's quite easy to get the impression that there's lots of fancy stuff going on here, especially if you listen to several quite noisy people, and there are indeed some fancy Japanese patents, but in fact biodiesel hardly exists here, some (or most) of the few projects that do exist are very bad, to the extent that emissions tests for exemption from the restrictions of the anti-diesel campaign here (Tokyo and some other places) will no longer allow biodiesel because they've found it's so badly made it wrecks the machinery. Tests of our biodiesel have shown it would pass and wouldn't mess up any machinery, but they made a blanket rule: NO biodiesel, great, thanks guys. More and more people are making their own now, since we got involved (not boasting, that's what's happened), high-quality fuel, but it doesn't count, too bad. Same with ethanol, lots of good research, lots of schemes, but nothing happens. Yet. China and Israel are also leaders in applied phycology and have done work on biofuels from algae. Michael Briggs, of UNH, and his team are currently focusing on enclosed systems where the algae will process wastewater too. Have they made any biodiesel from it yet? John Benemann, who was involved in the NREL research, is now an independent consultant and heading up an international network who are researching into it: their website gives a good overview Thanks, I'll take a look. http://www.co2captureandstorage.info/networks/Biofixation.htm . http://www.co2captureandstorage.info/networks/documents/01roadmp.pdf Other links... NREL research http://www.nrel.gov/docs/fy04osti/34796.pdf http://govdocs.aquake.org/cgi/reprint/2004/915/9150010.pdf Further studies http://www.unh.edu/p2/biodiesel/pdf/algae_salton_sea.pdf http://europa.eu.int/comm/research/energy/pdf/36_qingyu_wu_en.pdf Discussion forum exchanges http://biodiesel.infopop.cc/eve/ubb.x?a=tpcs=447609751f=719605551m =932606061r=932606061#932606061 Um... (burp), no thanks. http://forums.biodieselnow.com/topic.asp?TOPIC_ID=3153. http://forums.biodieselnow.com/topic.asp?TOPIC_ID=3414whichpage=1 http://groups.yahoo.com/group/oil_from_algae/ Algal biodiesel plant planned for California?? (I don't know anything more about it) http://www.bfi.org/Trimtab/spring02/biodiesel.htm US Company making algal biodiesel from power station gases http://www.greenfuelonline.com/index.htm I find the last link particularly interesting. My only problem with it - and with John Benemann's network - is the idea of putting CO2 from coal power stations into algae. All that fossil carbon still ends up in the atmosphere eventually: we need to focus on ways of locking it up permanently. Like just leaving it where it is now, for instance, nicely locked up and causing no trouble (apart from the odd war and so on). Some hope. Also, as an alternative to algae, a lot of research is being done on biomass-to-liquid technology which could turn trees into a very pure diesel fuel with fewer pollutants than
