Grass bioreactor

Hi, I tried building a grass bioreactor out of a 5 gallon bucket. I filled the bucket all the way to the top with grass and filled it with some water, closed it up, and then I let it set for 3 days. I used a lighter to try to to burn the gas, but all I saw was the lighter burning as usual. I am trying to get a reasonable amount of flammable gas for boosting car mpg. 

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Kiteman5 years ago
If you're sticking to just grass, you need (a lot) more grass and more time.
you can try use a barrel or two, filled up with grass, water and a little of chicken manure. just adapt a record to the barrel's lid and a hose with a tap
jbaker22 (author) 5 years ago
Thanks for the answers. Will I have to leave it go for 2-3 weeks to get any reasonable amount the way I am doing it or should I go with a new reactor design?
Longer I would expect - adding some chicken manure will speed things up.
nicelly5 years ago
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Yes, you need much more volume.
rickharris5 years ago
You shouldn't need much water just damp is Ok.

Adding animal or even human waste speeds matter up - Chicken waste is particularly good.

You would be better on a larger scale. A long 100 meters or so heavy duty plastic tube would be a good generator. tie a rope at each end and then another a bit further along to make an air lock for filling and emptying.

This is also a good design but requires more work.

If your adding animal waste then you will need more liquid.