From: here@is.invalid   
      
   Ammonia fuel offers great benefits but demands careful action   
      
   Ammonia, a main component of many fertilizers, could play a key role   
   in a carbon-free fuel system as a convenient way to transport and   
   store clean hydrogen. The chemical, made of hydrogen and nitrogen   
   (NH3), can also itself be burned as a zero-carbon fuel. However, new   
   research led by Princeton University illustrates that even though it   
   may not be a source of carbon pollution, ammonia's widespread use in   
   the energy sector could pose a grave risk to the nitrogen cycle and   
   climate without proper engineering precautions.   
      
   Publishing their findings November 6 in PNAS, the interdisciplinary   
   team of 12 researchers found that a well-engineered ammonia economy   
   could help the world achieve its decarbonization goals and secure a   
   sustainable energy future. A mismanaged ammonia economy, on the other   
   hand, could ramp up emissions of nitrous oxide (N2O), a long-lived   
   greenhouse gas around 300 times more potent than CO2 and a major   
   contributor to the thinning of the stratospheric ozone layer. It could   
   lead to substantial emissions of nitrogen oxides (NOx), a class of   
   pollutants that contribute to the formation of smog and acid rain. And   
   it could directly leak fugitive ammonia emissions into the   
   environment, also forming air pollutants, impacting water quality, and   
   stressing ecosystems by disturbing the global nitrogen cycle.   
      
   Fortunately, the researchers found that the potential negative impacts   
   of an ammonia economy can be minimized with proactive engineering   
   practices. They argued that now is the time to start seriously   
   preparing for an ammonia economy, tackling the potential sticking   
   points of ammonia fuel before its widespread deployment.   
      
   https://engineering.princeton.edu/news/2023/11/07/ammonia-fuel-o   
   fers-great-benefits-demands-careful-action   
      
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