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Taking your estimated numbers it's interesting to add that cost to the price of fuel and see where it gets you. A gallon of gasoline on average produces about
by hodgesrm 8y ago
Taking your estimated numbers it's interesting to add that cost to the price of fuel and see where it gets you. A gallon of gasoline on average produces about 20 pounds of C02, so 100 gallons gives a ton of CO2.
You can then calculate the cost of adding capture to gas prices.
* At $200 per ton gas prices increase $2 per gallon.
* At $100 the increase is $1 per gallon.
* At $40 the increase is $0.40.
* At $20 the increase is $0.20.
It looks as if we need to get numbers into the low tens of dollars for this to be feasible on a widespread basis.
The numbers are optimistic since they don't cover the CO2 from refining and transport. That seems to be around $2 but it's somewhat hard to get accurate values.
- 6nf 8y agoYea that's what I mean. It seems that cheap fast growing timber can be purchased for $20 per tonne. Dry timber is about 50% carbon and CO2 is about 30% carbon, so that means we can grow CO2 out of the atmosphere at a price of around $12 a tonne. We'll need to stack the wood somewhere but I don't think that will be terribly expensive.
- hodgesrm 8y agoThe problem we're seeing in the US West is that wood has an increasing tendency to burn up. For this to work at least where I live we need to reforest using species that grow fast and are also relatively fire-resistant. It seems people have been thinking of the fire-resistant part for a while: http://blog.davey.com/2017/08/fireproof-landscapes-with-fire-resistant-plants-trees-and-shrubs/ http://blog.davey.com/2017/08/fireproof-landscapes-with-fire....