SMRTR Science & EngineeringOct 29, 2025Interesting Engineering

US scientists make hydrogen fuel from wastewater in Princeton breakthrough

SMRTR summary

Princeton scientists discovered how to produce hydrogen fuel using treated wastewater instead of expensive ultrapure water by adding sulfuric acid to prevent mineral buildup in electrolyzers. This breakthrough cuts water treatment costs by 47% and energy costs by 62%, making green hydrogen production more viable for reducing carbon emissions.

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