Why don’t we get our drinking water from the ocean - Manish Kumar
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Date: 2025-03-21
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Comments and reviews: 20
jaspermcjasper3672
1: 23 - Survival depends on finding (or creating) freshwater. Why doesn't anyone make fresh water by electrolyzing sea-water (creating hydrogen and oxygen gas up at the tops of two inverted barrels and thick salt-rich sludge at the bottom which is washed out by more sea-water) and then burning the hydrogen and oxygen to generate SOME of the electricity that was consumed in the electrolysis I rather gather it's more energy-efficient to just use electricity to boil the water and distill it, because if that weren't true people would use hydrolysis plus burning the hydrogen to make pure water, instead of distillation. I see a lot of distilled water in stores, but not any burned hydrogen. So distilling must be more efficient but why would it be You never get any of that heat back. Rather, that heat flows away in whatever river or other heat-sink you are using to cool the distilling pipes.
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1: 23 - Survival depends on finding (or creating) freshwater. Why doesn't anyone make fresh water by electrolyzing sea-water (creating hydrogen and oxygen gas up at the tops of two inverted barrels and thick salt-rich sludge at the bottom which is washed out by more sea-water) and then burning the hydrogen and oxygen to generate SOME of the electricity that was consumed in the electrolysis I rather gather it's more energy-efficient to just use electricity to boil the water and distill it, because if that weren't true people would use hydrolysis plus burning the hydrogen to make pure water, instead of distillation. I see a lot of distilled water in stores, but not any burned hydrogen. So distilling must be more efficient but why would it be You never get any of that heat back. Rather, that heat flows away in whatever river or other heat-sink you are using to cool the distilling pipes.
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RidireOiche
We were always taught to use the vapour collection technique: two water containers, an empty water bottle can be torn in half in a pinch, one suspended higher than the other, with a sheet of smooth non-porous plastic or glass angled over both. Fill the higher container with seawater and place it in a sunny spot. Leave the higher face of the sheet or glass over the seawater without obstructing sunlight, and position the second container beneath the lower edge of the sheet to collect the desalinated condensation that drips down. Depending on the temperature, you can produce a minimum of a litre a day, which may not be sufficient for the long term but is just enough to survive.
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We were always taught to use the vapour collection technique: two water containers, an empty water bottle can be torn in half in a pinch, one suspended higher than the other, with a sheet of smooth non-porous plastic or glass angled over both. Fill the higher container with seawater and place it in a sunny spot. Leave the higher face of the sheet or glass over the seawater without obstructing sunlight, and position the second container beneath the lower edge of the sheet to collect the desalinated condensation that drips down. Depending on the temperature, you can produce a minimum of a litre a day, which may not be sufficient for the long term but is just enough to survive.
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jmsa2760
Reverse Osmosis is no recent technology, it has been around for 3-4 decades. And it does produce vast amounts of brine, just less than thermal desalination and requires also less energy, even if still lots of it.
The best, as the video indicates, is reusing the water, via wastewater to drinking water or just using the same wastewater treated to a lesser extent and using it to less demanding processes like agriculture and inustry.
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Reverse Osmosis is no recent technology, it has been around for 3-4 decades. And it does produce vast amounts of brine, just less than thermal desalination and requires also less energy, even if still lots of it.
The best, as the video indicates, is reusing the water, via wastewater to drinking water or just using the same wastewater treated to a lesser extent and using it to less demanding processes like agriculture and inustry.
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ted_ed
is literally how I make music, and I fail. In 20 years (of working with music, not living) I've heard a million tracks, a thousand of which I've played guitar on, but it hasn't helped me in any way to compose verses, bridges and heavy riffs, I still only can make choruses.
Also, knowing about politics won't help you make music, or a lamp out of epoxy
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is literally how I make music, and I fail. In 20 years (of working with music, not living) I've heard a million tracks, a thousand of which I've played guitar on, but it hasn't helped me in any way to compose verses, bridges and heavy riffs, I still only can make choruses.
Also, knowing about politics won't help you make music, or a lamp out of epoxy
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BruderDeveloper
For those wondering: Salt is toxic to humans because your body is unable to get rid of the salt that comes from seawater. Your body's kidneys normally remove excess salt by producing urine, but the body needs freshwater to dilute the salt in your body for the kidneys to work properly.
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For those wondering: Salt is toxic to humans because your body is unable to get rid of the salt that comes from seawater. Your body's kidneys normally remove excess salt by producing urine, but the body needs freshwater to dilute the salt in your body for the kidneys to work properly.
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lelekelelep
In this small science experiment, we dissolve salt in the water and place it into a tube. If we submerge the tube in a pool of water that has no salt dissolved in it, you'll see that water flows into the tube. Wherever sodium is, water will flow towards it.
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In this small science experiment, we dissolve salt in the water and place it into a tube. If we submerge the tube in a pool of water that has no salt dissolved in it, you'll see that water flows into the tube. Wherever sodium is, water will flow towards it.
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chriswilliams8159
Being in the middle of a sea is quite comparable to being among people one doesn't fit in with. In one case, one is surrounded by water, but can't drink a single drop, while in the latter case, one is surrounded by people and is still lonely.
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Being in the middle of a sea is quite comparable to being among people one doesn't fit in with. In one case, one is surrounded by water, but can't drink a single drop, while in the latter case, one is surrounded by people and is still lonely.
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germanjimenez5336
Some more bad news about ocean water is that it contains a lot of microorganisms, which could be harmful at any point. So, distillation, even if slow, is really the best path when on a lonely boat in the middle of the sea.
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Some more bad news about ocean water is that it contains a lot of microorganisms, which could be harmful at any point. So, distillation, even if slow, is really the best path when on a lonely boat in the middle of the sea.
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luyzqint3760
Actually all the water that we use in the whole world, it comes from the ocean.
Nature has the mechanism to make the water drinkable, but humans have not been able to capture that water.
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Actually all the water that we use in the whole world, it comes from the ocean.
Nature has the mechanism to make the water drinkable, but humans have not been able to capture that water.
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pierrecurie
This video is mostly about desalination. For the pathophysiology of what happens if you drink soy sauce (close enough to sea water, I guess [actually 5-8x the salinity], check out chubbyemu
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This video is mostly about desalination. For the pathophysiology of what happens if you drink soy sauce (close enough to sea water, I guess [actually 5-8x the salinity], check out chubbyemu
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ThrillSeeker3524
Here in Grenada, much of our tap water is desalinated. We do have lakes, streams and waterfalls, but the University's water supply comes from desalination.
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Here in Grenada, much of our tap water is desalinated. We do have lakes, streams and waterfalls, but the University's water supply comes from desalination.
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nolonger9112
Just save some sailor that survive hundred day at sea after ship sink. Maybe we can interview them for how they survive that long without eat each other yet.
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Just save some sailor that survive hundred day at sea after ship sink. Maybe we can interview them for how they survive that long without eat each other yet.
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Enceladus335
Sigh the torment surrounded by endless water and not a drop you can drink to quench your thirst on the contrary it will make you more thirsty
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Sigh the torment surrounded by endless water and not a drop you can drink to quench your thirst on the contrary it will make you more thirsty
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angelehachey9880
They use fossil fuels to heat the water. Can't they use microwaves to bring it to a boil temperature Would that be more energy efficient
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They use fossil fuels to heat the water. Can't they use microwaves to bring it to a boil temperature Would that be more energy efficient
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YorktownClass
Someone gotta send this video to the government of Algeria. An oil rich country that doesnt care about its citizens not accessing water.
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Someone gotta send this video to the government of Algeria. An oil rich country that doesnt care about its citizens not accessing water.
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feynstein1004
Wouldn't it be better if we genetically modified ourselves to handle both fresh and seawater Plenty of fish have that ability, right
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Wouldn't it be better if we genetically modified ourselves to handle both fresh and seawater Plenty of fish have that ability, right
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ThrillSeeker3524
Don't drink out of the ocean, K'nuckles! Seawater makes you CRAAAZZZYYY! LOOK AT ME! I'VE BEEN DRINKING IT FOR HOURS! -Flapjack
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Don't drink out of the ocean, K'nuckles! Seawater makes you CRAAAZZZYYY! LOOK AT ME! I'VE BEEN DRINKING IT FOR HOURS! -Flapjack
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Seddell
But how did the early humans survived without unfiltered water Did they drink from the freshwater rivers, and other forms of water only
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But how did the early humans survived without unfiltered water Did they drink from the freshwater rivers, and other forms of water only
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Julius-kq6fl
You shouldn't be breathing air at all if you HAVE to ask this type of question in 2025. You DON'T DESERVE to be living at all.
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You shouldn't be breathing air at all if you HAVE to ask this type of question in 2025. You DON'T DESERVE to be living at all.
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bag3lmonst3r72
Sea water is deadly; every seaman knew that.
Read this in a Reader's Digest 35 years ago, never been able to forget it.
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Sea water is deadly; every seaman knew that.
Read this in a Reader's Digest 35 years ago, never been able to forget it.
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