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      CommentAuthorTrim
    • CommentTimeJun 25th 2021
     
    Brine can be used for energy production, as you know.

    Can also in sunshine emit water vapour into the air where it can be condensed into more freshwater.

    If the brine has no commercial value, why pump it back into the sea, when there is plenty of wasteland in the interior.
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      CommentAuthorAngus
    • CommentTimeJun 25th 2021
     
    Posted By: TrimBrine can be used for energy production, as you know.

    Can also in sunshine emit water vapour into the air where it can be condensed into more freshwater.

    If the brine has no commercial value, why pump it back into the sea, when there is plenty of wasteland in the interior.


    Brine produces power only when you dilute it with freshwater, which rather defeats the purpose. Solar evaporation of brine is fairly slow and gets slower as it gets more concentrated. Given that the volume of brine produced roughly equals the volume of freshwater there will need to be a lot of surface area for evaporation. Pumping brine takes energy so unless your evaporation ponds are nearby and on the same level you will have another loss to consider.
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      CommentAuthorTrim
    • CommentTimeJun 25th 2021
     
    It still saves on fossil fuel use, and everybody needs freshwater.
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      CommentAuthorTrim
    • CommentTimeJun 25th 2021
     
    @Angus

    You falsely assumed something.

    Concentrated brine has more ions than seawater, so power is available.

    REAPower: Electricity from brine.

    https://m.youtube.com/watch?v=VY32O5cy4BQ
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      CommentAuthorAngus
    • CommentTimeJun 25th 2021
     
    No I didn't. That one dilutes brine with weaker brine and produces correspondingly less power. It doesn't work too well with osmotic membranes, but there are other ways, of which the reverse electrodialysis in the video is one. There was also supposed to be pilot project in the Netherlands about the same time, seven years ago, but I haven't heard any more from either one. RED is pretty inefficient and needs fancy membranes which get fouled.

    If you have two brine sources and you are actually trying to make freshwater you'd be better off to get it out of the weaker brine and forget the energy generation. I have spent quite a bit of time thinking about using solar evaporation just to generate energy and so far I can't see that it could be practical in most situations. It might be a way of storing energy, though.
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      CommentAuthorTrim
    • CommentTimeJun 25th 2021 edited
     
    The post is really about getting much needed freshwater with the lowest possible fossil fuel use, any power produced is a plus which may help to reduce some of the cost.

    It also could be handy for getting water vapour out of the cold night air.

    https://revolution-green.com/harvesting-drinking-water-humidity-around-clock/

    Pity there isn't any cold seawater nearby.
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      CommentAuthorTrim
    • CommentTimeJun 27th 2021
     
    New tech cheaply produces lithium and H2, while desalinating seawater.

    https://newatlas.com/materials/kaust-lithium-phosphate-llto-hydrogen-desalination/
    • CommentAuthorAsterix
    • CommentTimeJun 27th 2021
     
    Probably never come to a commercial scale operation; sounds more like Saudi bragging.
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      CommentAuthorAngus
    • CommentTimeJun 27th 2021
     
    Yup. MBS needs it to justify his crazy zero-discharge desalinator.
    • CommentAuthorBigOilRep
    • CommentTimeJun 27th 2021
     
    Posted By: AngusYup. MBS needs it to justify his crazy zero-discharge desalinator.

    Or if anyone disagrees, have them chopped up and stuffed into plastic bags.
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      CommentAuthorAngus
    • CommentTimeJun 27th 2021
     
    A lot of high tech systems are engineered on that principle.
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      CommentAuthorTrim
    • CommentTimeJun 30th 2021
     
    Some progress at last.

    Desalination membrane wetting issue solved using co-axial electrospun nanofiber - Revolution-Green

    https://revolution-green.com/desalination-membrane-wetting-issue-solved-co-axial-electrospun-nanofiber/
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      CommentAuthorTrim
    • CommentTimeJun 30th 2021
     
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      CommentAuthorTrim
    • CommentTimeJun 30th 2021 edited
     
    The Gulf stream need more brine to help it flow.

    Freshwater is needed all over the world.

    Have brine power station's on both North West Canada and North East Greenland coasts to increase the saline in the descending current and provide electricity.

    Wind power can provide some power to filter the seawater not just for freshwater but also for brine.

    Both the Eastern coast's off North America and Western coast off Europe rely on the Gulf Stream to keep the climate stable so need to invest in collecting brine from desalination projects all over the world making them more economical.

    Fishing boats in approved areas can use brine batteries for energy the waste high saltwater can be dumped in the current descending area.
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      CommentAuthorAngus
    • CommentTimeJun 30th 2021 edited
     
    Posted By: TrimHave brine power station's on both North West Canada and North East Greenland coasts to increase the saline in the descending current and provide electricity.


    It works the other way, Trim. Salinity power stations discharge water of a salinity intermediate between the two inputs. What you need is a big desalination plant, for which you need a huge source of power and a place to send the waste freshwater.

    Also, that would be the North-EAST part of Canada, I assume.
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      CommentAuthorTrim
    • CommentTimeJun 30th 2021
     
    Well that would help California.

    The brine is mostly to help the end of the stream take a dive, any power is a plus.

    Save the stream, save the stream.On
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      CommentAuthorTrim
    • CommentTimeJun 30th 2021
     
    Invest in salt mines as well.
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      CommentAuthorTrim
    • CommentTimeJul 4th 2021
     
    Dracones contain a high concentration of brine can be towed to the appropriate area.
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      CommentAuthorTrim
    • CommentTimeJul 6th 2021
     
    Mixed up membrane desalinates water with 99.99 percent efficiency.

    https://newatlas.com/materials/desalination-membrane-coaxial-electrospinning-nanofibers/
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      CommentAuthorTrim
    • CommentTimeJul 17th 2021 edited
     
    Volcanic brine mines could be green sources of copper, gold and lithium.

    https://newatlas.com/environment/volcano-brine-mines-copper-gold-lithium/

    As well as geo thermal as an extra the brine could be used in batteries and the waste water used at the end of the Gulf stream to help it descend.

    https://en.wikipedia.org/wiki/Salt_water_battery