Not sure it would be worth the hassle unless you are going to go at it all the time.  With all the safety and Hazardous hoopla you have to do for just a few loads a year. 

on use of NH3 and LPG,  I think you could but you would have to have a safe place to drain it down between products.

Being green on it, you better look at insurance for placeing storage and hauling before you purchase anything.  jmo