[HN Gopher] Seawater Might Soak Up More Carbon
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       Seawater Might Soak Up More Carbon
        
       Author : rbanffy
       Score  : 20 points
       Date   : 2023-02-10 14:49 UTC (8 hours ago)
        
 (HTM) web link (nautil.us)
 (TXT) w3m dump (nautil.us)
        
       | piceas wrote:
       | "They will take leftover rock from a defunct asbestos mine in
       | Quebec, extract magnesium hydroxide--an antacid that is the main
       | component in milk of magnesia--and stir it into water flowing
       | into the ocean from a sewage treatment plant. The company hasn't
       | announced the location of the experiment."
       | 
       | I hope they don't end up with asbestos sand dunes.
       | 
       | The graphic shows mining of limestone with some cute little
       | trucks hauling the rock it about. I would have thought using a
       | marine source would cut the on-land middleman. Then again, I
       | don't know if it's enough to simply mine and crush some rocks
       | from under the sea and send plumes of carbonate sediment into the
       | gulf stream to be distributed far and wide. One man's turbid
       | shores might be another's carbon sink.
        
       | goatlover wrote:
       | Seems unlikely we'll stay below 2 degrees warming, so either
       | geoengineering or we adapt to a warmer world. Unless fusion
       | becomes commercially viable in the next decade.
        
       | consumer451 wrote:
       | Interesting, I posted what appears to be a different company in
       | this space, Heimdal, just the other day:
       | 
       | https://news.ycombinator.com/item?id=34708603
        
       | red-iron-pine wrote:
       | might.
       | 
       | i wouldn't bet on it, and think we should do a lot more
       | geoengineering
        
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       (page generated 2023-02-10 23:02 UTC)