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Bill Gates-backed startup makes ‘butter’ out of water and carbon dioxide
(www.zmescience.com)
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this post was submitted on 14 Jul 2024
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I mean cool, but if farts release CO2 after digestion breaks down fats and proteins, then it's not much of a carbon sink, is it? Not to mention the scale necessary to reverse climate change. We'd have to make billions of barrels of the stuff, then pump it deep underground for long term sequestration. It'll be so energy intensive we'll require nuclear fusion.
Dead serious, I say we do it.
Most of the CO2 savings comes from not raising cows, you’re correct that the carbon capture in the butter wouldn’t matter that much due to digestion, but it is likely not all the carbon will be released as CO2 again.
It's not intended to be a carbon sink. It's essentially intended to be a more carbon efficient way of producing margarine without having to grow e.g. palm oil and destroy forests. They thought, instead of making plants do the work of turning water and CO2 into fats, let's just do it in the lab.
The basic science could work, although it's usually tough to beat "put seeds into ground and wait" on pure cost. However the fact that they compare this to butter makes me sceptical. Given how wasteful growing a whole cow is just to make some milk fat, it's easy to look efficient compared to that. They would compare themselves to sustainably produced margarine if they were honest.
It's chemically identical to butter, so we wouldn't need milk cows.