• Scrubbles@poptalk.scrubbles.tech
      link
      fedilink
      English
      arrow-up
      14
      arrow-down
      2
      ·
      1 year ago

      Which, I’m all for us all reducing our footprint too, but knowing that at the same time we should be matching oil and gas executives through the streets for old fashioned tar and feathering at the same time.

    • Honytawk@lemmy.zip
      link
      fedilink
      English
      arrow-up
      7
      ·
      1 year ago

      Maybe we should hit them back with the corporate co2 footprint

      Lets calculate the amount of pollution divided by the amount of employees

    • exocrinous@startrek.website
      link
      fedilink
      English
      arrow-up
      4
      ·
      1 year ago

      BP told me it was my fault they were emitting carbon, because I was paying them to do it. So I stopped paying them. No car. And I want the government to ban cars among other reforms so nobody else pays them.

  • observantTrapezium@lemmy.ca
    link
    fedilink
    English
    arrow-up
    26
    ·
    1 year ago

    Hydrogen was made approximately 400,000 after the big bang in a process called recombination, as the universe cooled down enough for stable neutral atoms to exist.

  • FuglyDuck@lemmy.world
    link
    fedilink
    English
    arrow-up
    11
    ·
    1 year ago

    Attack geese.

    I’d normally suggest that attack geese are against geneva conventions or something… but these guys… they got it coming.

      • FuglyDuck@lemmy.world
        link
        fedilink
        English
        arrow-up
        3
        ·
        edit-2
        1 year ago

        oh. good. glad that’s sorted. Lets also activate the uplands geese for naval operations.

        I wonder how much it would cost to train wild pigeons to shit on their shit. and how much that would cost… them.

        • Allero@lemmy.today
          link
          fedilink
          English
          arrow-up
          2
          ·
          1 year ago

          Birds cannot control when they poop, so they’ll have to patrol their target.

          Which, when you think about it, is even more terrifying

    • marcos@lemmy.world
      link
      fedilink
      English
      arrow-up
      6
      arrow-down
      1
      ·
      1 year ago

      You mean the people literally answering the question? I doubt anybody is missing the point.

    • weariedfae@lemmy.world
      link
      fedilink
      English
      arrow-up
      1
      ·
      1 year ago

      I’ll bite. I have no idea what the picture is doing or referencing and the joke answers are confusing because, again, I don’t get “the joke”.

      • wewbull@feddit.uk
        link
        fedilink
        English
        arrow-up
        3
        ·
        1 year ago

        The attack-🪿 is asking BP how the hydrogen is made because it’s an important question.

        Hydrogen can be made multiple ways.

        1. Split water (H²O) with electricity. You get ⅔ H and ⅓ O. When you burn the H you’ll get water back and ⅔ the energy you put in. In this way it can actually as a poor battery.

        2. Take Methane (CH⁴), the major part of natural gas and split it. You get ⅘ H and ⅕ carbon. So you’re releasing the same carbon that you would release if you just burnt the methane, and you’ll get less energy too. Then take away the energy it took to split the methane and you’re a lot worse off for no saving in carbon.

        3. Other oil and gas based sources, but that follow the theme of methane.

        Only the first one is “green”, and only if the electricy comes from a green source (like solar or wind). Burning gas to make electricity to make hydrogen is stupid.

        Oil and gas companies companies keep pushing hydrogen as green power, but really they want to keep selling oil and gas, and if they need to convert it into hydrogen to do it, that’s fine in their eyes. Doesn’t matter if they are still pumping carbon out of the ground. Doesn’t matter if it’s less efficient. It’s green washing plain and simple.

        Attack 🪿 is asking the question that would make them admit this.

        That thread was full of people complaining that nobody was doing anything with hydrogen and it was stupid to power cars from electricity directly. They are all just O&G company shills

        • weariedfae@lemmy.world
          link
          fedilink
          English
          arrow-up
          1
          ·
          1 year ago

          Thank you, I appreciate you took the time to write this out and provide context. I was only aware of the water method but that makes sense.

  • EmperorHenry@discuss.tchncs.de
    link
    fedilink
    English
    arrow-up
    8
    arrow-down
    2
    ·
    1 year ago

    first you’d have to purify water by distilling it and then putting it through an R.O. with a regular water filter as a pre-filter.

    Then once you have that completely pure mix of hydrogen and oxygen you’d need to do electrolysis on the water. But that initial purifying process would have to be done very strictly, because if there’s even the smallest amount of salt or even chlorine in that water, or any other minerals then you could have a mixture of some very dangerous elements in the air around the water

  • aname@lemmy.one
    link
    fedilink
    English
    arrow-up
    3
    ·
    1 year ago

    During peak wind or solar hours when the electricity usage is often lower otherwise.

    • Phoonzang@lemmy.world
      link
      fedilink
      English
      arrow-up
      4
      ·
      1 year ago

      …and with what devices? Currently, there’s 11 GW of Electrolysis capacity available worldwide, with about 400 GW potentially realised by 2030. That’s 0.07% now of the total production of 16 TW from fossils, increasing to a whopping 2.5% in 2030. And that does not take into account that energy markets will be competing with industry that uses hydrogen as a reduction agent (steel, for example) to replace fossils. It also does not take into account that hydrogen is not as easy to transport than other fossils.

      Hydrogen might be the solution to the energy crisis, but for that we’d have to pick up our game immensely. Which will not happen if everyone thinks hydrogen is already freely and abundantly available.

      !Remind me in 20 years

  • Tar_Alcaran@sh.itjust.works
    link
    fedilink
    English
    arrow-up
    0
    ·
    edit-2
    1 year ago

    To save you all a google: it’s made from natural gas, at a pretty significant energy loss compared to just burning the gas. It generates about 4 times more co2 than burning diesel.

      • greyw0lv@lemmy.ml
        link
        fedilink
        English
        arrow-up
        0
        ·
        1 year ago

        Electrolysis, it works but it takes a lot of energy to produce, so burning hydrogen from this would be a fools errand.

        • pumpkinseedoil@mander.xyz
          link
          fedilink
          English
          arrow-up
          1
          ·
          8 months ago

          But you could technically build huge solar panel areas in deserts and bring that hydrogen to populated areas. Or you could use excess energy from renewables to produce hydrogen, storing at least some of the excess energy for times where renewables produce less.

    • JoBo@feddit.uk
      link
      fedilink
      English
      arrow-up
      0
      ·
      1 year ago

      That is true of all colours of hydrogen other than green (and possibly natural stores of ‘fossil’ hydrogen if they can be extracted without leakage).

      Green hydrogen is better thought of as a battery than a fuel. It’s a good way to store the excess from renewables and may be the only way to solve problems like air travel.

      How hydrogen is transforming these tiny Scottish islands

      That’s not to say it’s perfect. Hydrogen in the atmosphere slows down the decomposition of methane so leaks must be kept well below 5% or the climate benefits are lost. We don’t have a good way to measure leaks. It’s also quite inefficient because a lot of energy is needed to compress it for portable uses.

      And, of course, the biggest problem is that Big Carbon will never stop pushing for dirtier hydrogens to be included in the mix, if green hydrogen paves the way.

      • Eatspancakes84@lemmy.world
        link
        fedilink
        English
        arrow-up
        0
        ·
        1 year ago

        I really don’t get why hydrogen remains popular. Hydrogen is significantly less efficient than lithium batteries in storing electricity. There are currently dozens of technologies on the way for improving batteries beyond what’s possible with lithium. So what’s the market potential for green hydrogen again?

        • ButtDrugs@lemm.ee
          link
          fedilink
          English
          arrow-up
          1
          ·
          1 year ago

          It wins by a huge margin on the energy to weight ratio. In scenarios where weight doesn’t matter it’s dumb, but there is potential in places like air travel where it does make sense.