I am not aware of a process that can convert these compounds into methane. However I have read of an article where developement of a solar cell that generates electricity through some mechanism of reacting carbon dioxide and water to generate methanol. It may not be methane but methanol in of itself is also valuable as a fuel and to generate electricity through a byproduct is just astounding.
Henry Ford developed and mass produced automobiles.
Important products of this industry include armatures, starting motors, alternators, and generators for automobiles and aircraft, and ignition apparatus for internal combustion engines, including spark plugs, magnetos, coils, and distributors.
An assembly line.
the poisoness gas produced by incomplete combustion is carbon monoxide:)
It is same as combustion. O2 is involved and CO2 is produced
After combustion water and carbon dioxide are released.
Energy
No moles of oxygen are produced by complete combustion of propane. Oxygen is CONSUMED, not produced. For combustion of 4 moles of propane, it will use 20 moles of oxygen.
carbon dioxide :)
Carbon dioxide
Energy
acid rain