Is there an alternate fuel that de-emphasizes carbon?

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SUMMARY

The forum discussion centers on the search for an alternative fuel that is carbon-free, can be produced from water and air without concentrating carbon dioxide, and remains liquid at standard temperature and pressure (STP). Hydrogen, while often considered, fails to meet these criteria due to its predominant production from methane, which emits CO2. Biofuels, although carbon-based, are renewable and can sequester CO2, but they face significant production costs. Ammonia is identified as a potential candidate, yet its current production methods are not carbon-free, highlighting the challenges in developing viable carbon-free fuels.

PREREQUISITES
  • Understanding of hydrogen production methods, particularly steam reforming and electrolysis.
  • Knowledge of biofuels and their carbon-neutral characteristics.
  • Familiarity with ammonia production processes, specifically the Haber-Bosch process.
  • Awareness of the environmental impact of various fuel sources and production methods.
NEXT STEPS
  • Research the latest advancements in hydrogen production using carbon-free electricity sources.
  • Explore the potential of cellulosic ethanol and other biotechnological approaches to biofuel production.
  • Investigate the development of carbon-free ammonia production methods through electrochemical processes.
  • Examine the environmental benefits and challenges of electric vehicles powered by renewable energy sources.
USEFUL FOR

Researchers, environmental scientists, energy policy makers, and anyone interested in sustainable fuel alternatives and their implications for climate change.

  • #31
If climate change is the goal, then the energy/pollution caused by production of the fuel is just as important than the burning of the fuel.
 
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  • #32
Two quick comments:

Hydrogen is commercially produced from methane, with CO2 as a byproduct. It would be better to use the methane directly: less energy loss for the same emission. Only a small amount is produced through water electrolysis.

Ammonia is nasty stuff. It's one of the most dangerous chemicals today - probably just under carbon monoxide. The reasons CFCs were introduced as refrigerants in around the 1920's is because people were dropping like flies from ammonia accidents.
 
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  • #33
I was going to go on a long screed about ammonia releases, but then I realized I would just be...venting.
 
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