Lots of new info flowing on the Internet these days about biogas and methane digesters. Here is a recent post form John Robb at Resilient Communities about using biogas for increasing one's resiliency.
And here is a DIY tutorial I came across on how to build your own small-scale digester.
http://youtu.be/eVEZfxGdV5A
A summer project I have lined up is to build a digester and then try to connect it to a small propane-powered refrigerator. It would be a wonderful addition for grid-down situations.
Thanks Jason…in the video, what was the function of the jar near the end of the process? Collect condensation? Safety? I'll be interested to hear how your project goes.
Jason,
I have looked into building a "Biogas digester" for a while. I would love to read and see what you have done later this summer. I believe this is also called an anaerobic digestor. I wish that I still had the links to the videos that I had found. There were some videos by a man out of Germany that made one to power a small refrigerator.