Engineers at MIT and in China are aiming to turn seawater into drinking water with a completely passive device that is inspired by the ocean, and powered by the sun.

In a paper appearing today in the journal Joule, the team outlines the design for a new solar desalination system that takes in saltwater and heats it with natural sunlight.

The researchers estimate that if the system is scaled up to the size of a small suitcase, it could produce about 4 to 6 liters of drinking water per hour and last several years before requiring replacement parts. At this scale and performance, the system could produce drinking water at a rate and price that is cheaper than tap water.

https://www.cell.com/joule/fulltext/S2542-4351(23)00360-4

  • Gsus4@feddit.nlOP
    link
    fedilink
    English
    arrow-up
    39
    ·
    edit-2
    1 year ago

    If this works, it’s better than anything we have , which costs grid energy and dumps brine all the same. If anything, the smaller scale makes it easier to distribute and dilute the output brine.

    • TurboDiesel@lemmy.world
      link
      fedilink
      English
      arrow-up
      22
      arrow-down
      5
      ·
      1 year ago

      If sea levels rise as much as they’re supposed to, this will be an invaluable tool for an enormous proportion of the country. My concern comes from capitalism getting its hooks into this.

      • Draghetta@sh.itjust.works
        link
        fedilink
        English
        arrow-up
        7
        arrow-down
        27
        ·
        1 year ago

        Capitalism bad, sure, but you can’t deny it has a way of making things scalable and affordable. If some venture co started the infrastructure to mass produce this stuff and make it possible for everybody to afford it would it be that bad?

        • Cyberwitch_7493@lemmy.dbzer0.com
          link
          fedilink
          English
          arrow-up
          49
          arrow-down
          2
          ·
          1 year ago

          What? No, my friend you misunderstand. Mass-production makes stuff affordable and scalable. Capitalism makes it so wealth is horded and only the rich get to decide what gets made. You vote with your dollar while a billionaire votes with theirs, guess who wins.

          Mass-production is not a capitalism-exclusive unlock, it’s a dlc that can be redeemed in any economic system.

          • Jimbabwe@lemmy.ml
            link
            fedilink
            English
            arrow-up
            6
            arrow-down
            24
            ·
            1 year ago

            Without the motivation to make a profit, few entities are both willing and able to engage in the considerable expense, risk, and effort required to spin up a mass production line.

              • Jimbabwe@lemmy.ml
                link
                fedilink
                English
                arrow-up
                2
                arrow-down
                6
                ·
                1 year ago

                Yeah, Neanderthals were famous for their efficient large-scale manufacturing capabilities

              • Jimbabwe@lemmy.ml
                link
                fedilink
                English
                arrow-up
                2
                arrow-down
                1
                ·
                1 year ago

                Governments are one of the few entities that are able (and occasionally willing) to spin up a mass production endeavor without the profit motive necessarily present.

                Sometimes they essentially do this themselves via federal employees, or contractors. Sometimes they achieve the ends indirectly by incentivizing private companies with subsidies and the like.

                Regardless of how it gets done, everyone shows up for work in the morning motivated by something. In the Soviet Union this was often the fear of imprisonment or other such violence, which was a really shitty situation for a lot of people to be in. In the modern world, it’s typically the hope that the money made will pay for food and housing and such.

              • Rinox@feddit.it
                link
                fedilink
                English
                arrow-up
                1
                arrow-down
                1
                ·
                edit-2
                1 year ago

                The capitalist entity was the state, the political elites the ones hoarding wealth, everyone else getting the shaft.

                • Flying Squid@lemmy.world
                  link
                  fedilink
                  English
                  arrow-up
                  2
                  ·
                  1 year ago

                  How can the state be the capitalist entity? That makes no sense. The state controlling the means of production is literally what communism is.

          • Draghetta@sh.itjust.works
            link
            fedilink
            English
            arrow-up
            5
            arrow-down
            24
            ·
            1 year ago

            Right. We live in a capitalistic society though, not in another one. So either “capitalism gets its hooks” on this stuff or it stays inconvenient and unaffordable. Then we can speak about fantasy scenarios all we want…