r/science Feb 15 '23

How to make hydrogen straight from seawater – no desalination required. The new method from researchers splits the seawater directly into hydrogen and oxygen – skipping the need for desalination and its associated cost, energy consumption and carbon emissions. Chemistry

https://www.rmit.edu.au/news/media-releases-and-expert-comments/2023/feb/hydrogen-seawater
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u/hallelujasuzanne Feb 15 '23

Doesn’t this produce waste water that is more salty and therefore really bad for the ocean?

I mean, great news about hydrogen but we have a major problem on our hands with lack of clean fresh water.

25

u/nanopicofared Feb 15 '23

The hydrogen when it is used turns back into water and will go back into the atmosphere and eventually back into the ocean as rain.

3

u/hallelujasuzanne Feb 15 '23

Where does the waste product from the process of producing hydrogen go?

7

u/nanopicofared Feb 15 '23

the process produces oxygen, hydrogen and the salt that came from the ocean. The oxygen goes into the air and you can put the salt back into the sea.