Subject: Ash...Can it burn again???

Mine is a simple question.  Is there anything (thats cheap) that you can mix 
with ash to make it burnable again?  I mean like some sort of 
chemical(preferibly liquid) that, alone won't burn, but with ash it will.  Also 
(asuming that this is possible in the first place) Could it be low on polution?  
If yes, please explain in what I 
call "lazy terms" meaning: keep it understandable to the common person.  If no, 
then please explain the same way.
Thanks,
        Andrew

Re: Ash...Can it burn again???