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View Diary: Shocking drought data from NASA (382 comments)

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  •  It isn't (6+ / 0-)

    Takes a lot of energy

    And leaves a lot of brine.

    San Diego is building one, it is expected to bring water to 300,000 residents.  They plan to dump the brine back into the ocean.

    I am not so sure that's a good idea.

    "The NRA, the club you join when the military won't have you" - bumpersticker

    by dawgflyer13 on Thu Jul 24, 2014 at 02:24:09 PM PDT

    [ Parent ]

    •  If we could use the leftover salt for aqueous s... (3+ / 0-)

      If we could use the leftover salt for aqueous sodium batteries, that would be awesome.

      •  YES, Sodium-Ion Batteries! (2+ / 0-)
        Recommended by:
        kurt, BlackSheep1
        http://en.wikipedia.org/...
            Sodium-ion batteries are a type of reusable battery that uses sodium-ions as its charge carriers. This type of battery is in a developmental phase, but may prove to be a cheaper way to store energy than commonly used lithium-ion batteries.[1] (As of 2014, one company, Aquion Energy, has a commercially available sodium-ion battery with cost/kWh capacity similar to a nickel-iron battery.) Unlike sodium-sulfur batteries,[2] sodium ion batteries can be made portable and can function at room temperature (approx. 25˚C).
            (lots of details, and citations, at URL)
        And.... Saltwater batteries have been a known and proven technology since 200 years ago.

        Now... its time for some modernization... refinement.... innovation... R&D:

        Energetic Aqueous Rechargeable Sodium-Ion Battery Based on Na2CuFe(CN)6–NaTi2(PO4)3 Intercalation Chemistry
            http://onlinelibrary.wiley.com/...
        Towards High Power High Energy Aqueous Sodium-Ion Batteries: The NaTi2(PO4)3/Na0.44MnO2 System
            http://onlinelibrary.wiley.com/...
        New-concept Batteries Based on Aqueous Li+/Na+ Mixed-ion Electrolytes
            http://www.nature.com/...
            Received 19 March 2013 Accepted 20 May 2013 Published 05 June 2013

            Rechargeable batteries made from low-cost and abundant materials operating in safe aqueous electrolytes are attractive for large-scale energy storage. Sodium-ion battery is considered as a potential alternative of current lithium-ion battery. As sodium-intercalation compounds suitable for aqueous batteries are limited, we adopt a novel concept of Li+/Na+ mixed-ion electrolytes to create two batteries (LiMn2O4/Na0.22MnO2 and Na0.44MnO2/TiP2O7), which relies on two electrochemical processes. One involves Li+ insertion/extraction reaction, and the other mainly relates to Na+ extraction/insertion reaction. Two batteries exhibit specific energy of 17 Wh/kg and 25 Wh/kg based on the total weight of active electrode materials, respectively. As well, aqueous LiMn2O4/Na0.22MnO2 battery is capable of separating Li+ and Na+ due to its specific mechanism unlike the traditional “rocking-chair” lithium-ion batteries. Hence, the Li+/Na+ mixed-ion batteries offer promising applications in energy storage and Li+/Na+ separation.

           
        A low-cost and environmentally benign aqueous rechargeable sodium-ion battery based on NaTi2(PO4)3–Na2NiFe(CN)6 intercalation chemistry
            http://www.sciencedirect.com/...
            Highlights
            • An aqueous rechargable Na-ion battery is developed.
            • Na2NiFe(CN)6 and NaTi2(PO4)3 serve as cathode and anode, respectively.
            • A Na2SO4 aqueous solution serves as the electrolyte.
            • An output of ∼1.27 V and 42.5 Wh/kg is achieved.
            • This battery is safe, low cost and environmentally friendly.

        #3: ensure network neutrality; #2: ensure electoral integrity; #1: ensure ecosystemic sustainability.

        by ivote2004 on Thu Jul 24, 2014 at 07:11:43 PM PDT

        [ Parent ]

    •  The ocean is surprisingly large (2+ / 0-)
      Recommended by:
      historys mysteries, codairem

      The dilution factor is not infinite but it's pretty gigantic. The Pacific won't notice, I promise.

      Voting is the means by which the public is distracted from the realities of power and its exercise.

      by Anne Elk on Thu Jul 24, 2014 at 02:57:08 PM PDT

      [ Parent ]

    •  Ocean dumping of brine isn't a big deal. (4+ / 0-)

      The dilution happens pretty readily.

      Gentlemen, you can't fight in here! This is the War Room!

      by bigtimecynic on Thu Jul 24, 2014 at 03:20:11 PM PDT

      [ Parent ]

      •  No (2+ / 0-)
        Recommended by:
        JPax, yet another liberal

        You're taking brine that would be gradually distributed over thousands of square miles of ocean and dumping it all in one place.  It's going to have an effect on the marine ecosystem.  Sorry.  I'd like to think that it won't, but it will.  That brine will kill a lot of living things.

        At this point I really don't care that humans are going to become extinct because we deserve it.  We're stupid, gluttonous, greedy creatures who have squandered the gifts nature gave us.  We pretty much deserve to die, not that I don't feel sorry for the (now) children who are inheriting this mess.

        What bugs me is that we're going to potentially take down the entire planet.  It's an incredibly beautiful miracle, this planet.  It doesn't deserve this fate.  Oh well.

        They tell me I'm pretty amusing from time to time working with 140 characters or less.

        by CharlieHipHop on Thu Jul 24, 2014 at 08:24:01 PM PDT

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    •  Sell the salt. (0+ / 0-)

      And use nucular energy.

      Best Scientist Ever Predicts Bacon Will Be Element 119 On The Periodic Table

      by dov12348 on Fri Jul 25, 2014 at 05:54:19 AM PDT

      [ Parent ]

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