Collapse

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This is the place for discussing the potential collapse of modern civilization and the environment.

Collapse, in this context, refers to the significant loss of an established level or complexity towards a much simpler state. It can occur differently within many areas, orderly or chaotically, and be willing or unwilling. It does not necessarily imply human extinction or a singular, global event. Although, the longer the duration, the more it resembles a ‘decline’ instead of collapse.

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The Protein Problem (medium.com)

submitted 10 months ago by maketotaldestr0i@lemm.ee to c/collapse@lemmy.ml

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[–] maketotaldestr0i@lemm.ee 3 points 10 months ago

There has been a number of "we got this" claims for green nitrogen production that ive followed for some years and tried to get data from but every one of them has narrative to spew and zero math to give an idea of energy cost of per unit of N which lights up my bullshit meter. an example of a company https://jupiterionics.com/our-technology/ though i see they changed their website since last time i checked so maybe their is data now. The fact that none of them will give figures to compare makes me pretty sure they are all worse than Birkeland–Eyde process which is not dependent on fossil fuels in the same way as haber bosch process.

1 lb nitrogen per 43lbs dry corn grain, 1lb nitrogen per 150lb potatoes production.

According to wikipedia With 1kwh in birkland eyde process you get about 60grams of Nitric acid so ?13.333? of elemental N (if i did the chemistry conversions right).

So a 1kwh solar array in oregon would get about 5kwh per day in the spring ramping up to 7.5kwh in summer which happens to track plant N needs since its light dependent . so if we just use a 6kwh average for may-september growing season we get 900kwh x 13 = 11700g = 11.7 kilos elemental N which is 25.13 kilos urea or 33.4 kilos ammonium nitrate (check my chemistry)

Bringing us (sorry switching back to lbs instead of kilos again) a solid 25lbs of N which is good for about 1075lb of corn grain or 3750lb of potato which is adequate for a single persons yearly calorie rations.

So overall i think it could make economic sense as a survival enhancement to get a cheap 1kw used solar panel array connected to a home brew Birkeland–Eyde nitric acid generator bubbling through a limestone/dolomite pea gravel bubble barrel (calcium nitrate) fed to a mazzei injector to fertigate a home self sufficiency garden.

Thoughts anyone?

amortized across 25+ years in food value versus retail it pays for itself many time over . costs versus just buying 1 ton pallet of 20 kilo bags of fertilizer , maybe not as advantageous economically but certainly a cooler project than explaining why you have an entire ton of ammonium nitrate in the shed