In urban conditions I obviously dont have too much access to dung. But what i do have access to is an university canteen. Lots of food wasted there. Has anydbody porducede methane form food scraps? I could collect from there. And put in to the digester. Has anybody done this? How should i porceed? Get the scrap food, mush it up with a little with water. Add a little dung, humand dung, after allthe food was prepared for humans. And then wait? Iexpect it hould get good yields since it has a laot of protein in it.
I read the article on beates chicken car but what i dont understand about it was how did he sotre the methane in his car. Obviously it was in constant production mode. So he either had a very strong digester where the pressure would buildup or he had a very large digester or gas collector. Another option is that he did very short trips. I have experience in binding plastic sheets with a special welding machine. The first thing that came in to my mind whe i read about digesters was to make one very long and flexible one like intestines. That way I could control the folw manually by pushing if necessary. The problem im thinkin of at the moment is storing the gas in the car. Does anybody know to which pressure i can inflate the inner tire of a lorry? I think that it should have atleast 100L of volume, and with pressure i would expand a little but if it can hold pressures up to 6-7 atm (with its volume expanding to 300L or so) then it would be just enough for a round trip to work and back. I calculated that the equivalent of one gallon of gasoline is 7,8m3 of methane. A 15L diving bottle compressed at 100 bars could only hold 1500L = 1.5 m3 so i would need like 4, and that would start ghettin expensive because of the necessary regulators. And most importantly i dont have a compressor that can compress to 100 bars. And putting fridge compressors would work but that mabn become risky at such high pressures. With the tire i could have the same amount in a single container without the need for regualtors. I could use several tires(one in the back seat etc) to expand the range... this seems like the only feasible solution at the moment. Thanks Teoman > Helo Teoman > > Surley all soilid wastes can be sucessfully transformed in > biomethane.Very good methods from Bates chicken car experiences > avalible can be used for any solid wastes > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.htm > > Also french Biomass King work is also more relevant for you. > > We are involved in the new process developments to do acelerated > aerbic composting via biomass seperation and recycling . Yet this is > in experimental stage to reduce the composting time from months into > 10 days and inolve mixed bacterial and fungi biological catalysts > > Thus you need to combine two process as per the method of Bate: > first the making waste solid residues into parcial composting , > then uso this compostied material with animal wastes in anerabic > biodigesters..Thus your can be run the car using this compresed > biogas . > > We are also considering the use of hydrated fuel ethanol and > gasoline to use together with biogas due to its higher Co2 , thus > making higher fuel efficiency internal combustiom motor more > efficient and fexivel and competitive. > > You need also some filters (ironsponge) to remove the hydrogen sulfide > . > The whole process need some habilitation from engineerig side . > Thus your project on the waste into fuel has good green future .Go > ahead you can wn l all the problems with our biofuel group members > help but also good to have some engineering person involved. > > sd > Pannirselvam > Brasill > > sd > Pannirslvam > > On Thu, 10 Mar 2005 12:48:33 -0800 (PST), [EMAIL PROTECTED] > <[EMAIL PROTECTED]> wrote: >> Does anyone produce methane in urban conditions? >> >> Can i produce enough methane to run my car? How large a processor would >> i >> need and what could i feed it with? Old newspapers and food scraps and >> grass once in a while from the appartments garden... >> >> For the car im thinking of large tank that i will use 2 or three fridge >> compressors in series to compress the gas to about 40 atm. >> >> Thanks >> >> Teoman >> _______________________________________________ >> Biofuel mailing list >> [EMAIL PROTECTED] >> http _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
