Hola Francisco. Methane generating bacteria are sensitive to aerobic conditions and generally they do not produce methane in the presence of oxygen of the air but if the fermenter is like a pool deep enough and not agitated, it could happen that the bottom is anaerobic and in the surface is thin aerobic film. The feed rate on any fermenter will depend on many variables like size of the fermenter, temperature, pH, type of bacterial species, design and management of the fermenter (plug flow, well mixed and power used per unit of volume, re-use or not of bacterial mass, back flow of sediment if any or liquids), physical state and chemical structure of the material to feed the fementer, solubility, size of the material, carbon to nitrogen and phosphorus ratio, etc, etc. Regards.
Juan -----Mensaje original----- De: francisco j burgos [SMTP:[EMAIL PROTECTED] Enviado el: Domingo 27 de Febrero de 2005 9:34 PM Para: [EMAIL PROTECTED]; [EMAIL PROTECTED] Asunto: Re: [Biofuel] Fwd: Uses of glycerin Dear pals: the digester where glycerin is feed is it an aerobious(works in presence of air) digester or an anaerobious(works without air presence) digester?. What is the glycerin feed rate to the digester?. Thanks in advance, Francisco ----- Original Message ----- From: "Keith Addison" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, February 27, 2005 6:02 PM Subject: [Biofuel] Fwd: Uses of glycerin > Forwarded message from a Journey to Forever reader. > > Best wishes > > Keith > > >>Hello, >> >>I work at a wastewater treatment plant and I was doing a search on >>glycerin >>and biofuels and came across your website. It's has good information >>thanks. >> >>Here's another use of glycerin: Our treatment is accepting the glycerin >>from a biofuel producer, we feed it to our digesters, slowly very slowly. >>The addition of glycerin has dramatically increased our gas production, >>that we run all three engines that produce electricity for our plant and >>occasionally need to flare off the excess methane (we have 4 flares). >> >>This might be of interest to your readers that use digestion for >>electricity. > _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
