this post was submitted on 20 Oct 2023
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Sprinkle it on roads during the winter and have it wash back into the ocean, whence it came?
We already have plenty of salt for that.
Plus the places that are good for solar power don't tend to need salt in the winter...
Hmm, good points. Though if it is produced as a "waste" product, is there a chance it could be cheaper/greener than our current sources of salt?
Maybe - but desalination comes up a lot and nobody seems to have identified an option yet.
If you produce too much you'll crash the price of salt. And it's so cheap I suspect most of the cost is in processing and shipping. I'm finding costs for road rock salt in the US of $60-$150 per US ton.
Putting it back in the ocean isn't a bad idea per se. The problem is when it's put back in one spot which increases salinity locally. If they distributed it into the ocean it would be fine. But the added cost makes the whole process more expensive and you can't get a headline saying your new process is "cheaper then tap".