The CO2 molecule is taken from the enviroment -- its how organisms create sugar. The basic sugar is then oxidized into methane. You contribute nothing more than what was in the enviroment. I think you fail to understand what is actually taking place. AND the fact that any methane produced wouldn't just be released into the atmosphere.
You contribute to global warming by taking a molecule of CO2 from somewhere other than the atmosphere (not bad), and then combust the produced methane, which releases the CO2 molecule into the atmosphere (bad). If that didn't make any sense, you're taking methane from someplace other than the atmosphere and in the end releasing it into the atmosphere. The two CO2 molecules don't neccessarily cancel each other out.
As I said, organisms get their CO2 from the enviroment, thus, it is coming from the atmosphere.
Where do you suppose the methane will come from? Some could be obtained by using organic material but most comes from natural gas fields, underground. Which is why the chemical reaction, even though it is very clean is irrelevant because more methane/CO2 will be released into the atmosphere.
...That has nothing to do with my reasoning, nor is it actually relevant to discredit my arguement. If my experiment works, then there would be no need for these other forms of gathering methane.
How the experiment works (I can't say everything because me and my group want to patent the idea):
An organism produces a simple sugar naturally, releasing a small amount of energy in the process (very small, as in, you produce more energy typing). The simple sugar can then be reduced with a very reactive chemical (Mg) and H2 replaces the Oxygen molecule:
2H2S + O2 -> 2S + 2H20; G = -100 kcal
2H2S + CO2 -> 2S + 2H20 + CH20 ::We even get more water!
CH20 + H2 + Fe -> CH4 + FeO ::Note that FeO is NOT rust. Fe3O4 is rust.
But then arises the question, why use three types of gases to create one? CH2O can be used to get energy, but its combustion creates CO. Hydrogen takes energy to get by itself. We are hoping that the reaction will occur with pure water, rather than having it split apart into H2 and O2.