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The Haber process which you mentioned is really key here. It uses a lot of natural gas - more interesting than cow methane might be using nitrogen fixing bacter
by fred_is_fred 6y ago
The Haber process which you mentioned is really key here. It uses a lot of natural gas - more interesting than cow methane might be using nitrogen fixing bacteria or crop rotation (legumes) to reduce it's usage.
- hinkley 6y agoI'm not sure what it does to their methane output, but can't you feed legumes straight to cows? You definitely can to chickens and pigs.
- analog31 6y agoFrom what I've read, you can't grow enough legumes to fix the needed amount of nitrogen for high intensity agriculture. The Haber process sustains a sizable fraction of the world's animal population.
- seunosewa 6y agoHuman urine would be a sufficient source of nitrogen but it ends up in sewage nitrification-denitrification reactors that eventually turn most of the urea back into nitrogen gas so that the effluent can be safely discharged into water bodies.
- analog31 6y agoI guess that makes sense, the nitrogen has to go somewhere.