Monday, March 30, 2020

Carbon-dioxide to booze

Stafford Sheehan back in 2017 found an electrolysis that mixes (liquid) water with carbon-dioxide, and produces a weak alcoholic result. Last year the climate-changers and anti-"capitalists" found out. (Verbal-SATers gotta verbal-SAT.)

From that, any distiller can run their own process, to get azeotropic 96% alcohol. Then you dilute that with pure water again and - I dunno, age it in a barrel, or sell it as vodka. Or you don't dilute it and hand it straight-up to the medics.

Quibble: it's not quite true that the process is sticking two carbon dioxides together. Alcohols have hydrogen. That has to come from somewhere. Sheehan, as noted, used water.

I'm thinking this will be the alcohol-generation method of choice in Venus. She has the CO2, and her surface brings the heat for distillation. She doesn't have the water but that can be brought in. (Mars too. It's easier on Mars where frozen water is everywhere. There, the still can use mirrors to run up the heat in daylight.)

But I do wonder if the electrolysis needs that water. 5 MPa cold liquid (or, below Ishtar, supercritical) CO2 is already a solvent so, at that temperature, any miscible hydrogen compound should do.

SEQUEL 4/18/2020: For a hydrogen source, I recommend NOT using hydrogen sulfide.

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