3 things to get ideal conditions for methane production. The first is a temperature of 95 degrees. The second is to maintain a carbon/nitrogen ratio of 30:1 in the "organic matter" used to load the methane generator. Third is the dillution ratio in water of the organic matter.
The above are all easily taken care of and with exception to temperature the other 2 parameters can vary quite a bit but its better to keep the C/N ratio at or above 30:1. Just FYI the temperature is important for 2 reason... lower the temp and less of the organics will convert into gases *AND* the percent of the gas that is actually methane will also be lower. Raise the temp above 95 and production slows until at 104 it stops completely.
Thats how to make methane from organic matter now the hard part which is the design of an efficient methane generator that does all of the above. This I could use advice on. 4 major issues that I can think of right away are loading of a methane generator, prevention of sludge buildup, unloading the effluent and using the gas.
Any design ideas for a generator? Thing is I am working on something that will produce alot of organic waste (not manure) and will have a small 2 car garage sized building to power and keep warm. If I can use the organics to save on an incredible electric bill by generating a useful gas from waste that would be awesome.
Best design I can think of so far uses 55 gallon steel barrels welded together to form a long pipe. This would sit on something that allows it to be rotated so that sludge can be knocked free. At one end is the input and at the other is the output problems occur however when its rotated.