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Its not the nitrogen or CO2 in the bio gas that causes the problems.
Its all the corrosive crap and water that comes out of the anaerobic pond with the gas.
The big problem to look out for is going to be corroding of the existing steel pipe line.
Now if the bio gas could be piped to a natural gas processer they could clean it up with ease and pump it into the existing distribution lines with out any problems. But the problem there is these natural gas processing centers tend to be in the middle of no where, very far from the intended market.
For now it appears the best use for most of the bio gas is just to burn it on site, in a boiler or in a power generation prime mover.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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