Good article indeed.There is no denying that ultra pure water is a must as of date with the existing electrolyser technology.
But as I said technology is evolving very fast and I would not be surprised by another couple of years , raw water even sea water can be used for electrolysis
It is not only the efforts are on in India such as IIT Chennai , even NASA has also submitted its final research paper.
H2O Electrolysis With Impure Water Source—Final Report https://ntrs.nasa.gov/api/citations/20230003630/downloads/TM-20230003630.pdf
Another point i wanted to add that many people are concerned for depletion of fresh water reservoir due to Hydrolysis of water in a massive scale. so, desalination of sea water for hydrolysis should be explored.
However, depletion of Earth’s water level due to massive electrolysis of water is not true.
When you extract hydrogen from water by electrolysis, Hydrogen is to be used in two ways.
(1) For direct Combustion as a direct energy source such as Hydrogen in IC engine. When hydrogen is burnt with oxygen / air , it releases back water as steam H2O to the atmosphere so water back to circulation in to our planet
(2) Hydrogen can be stored and used for producing electricity with help of Fuel cell when needed as in case of Power Grid integration.
In such a situation again , the bye product is water…back to system
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