Scientists devise electricity-driven method to turn urine-derived urea into hydrazine
Researchers at the University of Adelaide have created an electrochemical process that converts urea—from pure form, wastewater or human urine—into hydrazine using electricity and salt.
A research group from the University of Adelaide’s School of Chemical Engineering has developed an electrochemical route to synthesize hydrazine from urea, a compound abundant in human urine and wastewater. By applying electricity in the presence of sodium chloride, chlorine-based intermediates form on the electrode surface and convert urea into N-chlorourea, which is then hydrolyzed to yield hydrazine with high efficiency.
Tests using pure urea, urea-rich wastewater and actual urine all produced comparable results, highlighting the process’s versatility. The scientists note that, if powered by renewable electricity, the method could offer a more sustainable and cost-effective path for manufacturing a chemical used in rocket fuels, pharmaceuticals and potential electric-vehicle battery technologies. However, they caution that issues like salt accumulation, energy demand for product isolation, and continuous-operation design must be resolved before industrial deployment. The findings were published in Nature Synthesis.
Why it matters
Turning waste-derived urea into a valuable chemical could reduce environmental impact and lower costs for rocket fuel and energy technologies.
In this story
