Or, you know, just build houses with them, preferably somewhere that isn't as water starved. When the houses get torn down, the wood ends up either recycled or in a landfill which is more or less the same thing.

not sure we have enough bogs to do that -- it might be an expensive proposition. It would be nice if we could find a way to mass produce petrified wood, though.

Convert it to charcoal, which is almost pure carbon, then dump it in an ocean trench for long-term geological recycling.