Originally Posted by aeppel_cpm

That's one of the Holy Grails of the industry my day job is in - refinery R&D.
Doing anything useful with methane other than burning it is another.

It CAN be done - it's the cheap and easy part that's hard.

So far, the cheapest/easiest way is to plant a forest.
The next might be to seed the ocean with iron.
A less biological way is to turn it into carbonate - you end up with something like cement. Someone has made a commercial process for that. It ties up the carbon - but not in an especially useful way.

In my other job, you see vodka guys arguing about which source of activated carbon is better: coconut hulls, etc. The source wood seems to matter. I was just wondering how much like activated carbon gunpowder charcoal is.