Abstract:
Hydrogen is as an energy source with clean
combustion. Conventional hydrogen production
technologies from hydrocarbons could have carbon
emissions in the fuel cells. Ammonia decomposition can
be considered as a carbon-free method of hydrogen
production. The objective of this study is to conduct a
comparative life cycle assessment for scaled-up hydrogen
production from waste-derived ammonia decomposition
on Ru/Al2O3 and Ni/Al2O3 catalysts. The hydrogen
production processes were scaled up using the process
simulation technique. The simulated process data for both
catalyst routes were applied to evaluate the net energy
analysis and global warming potentials at the same unit
basis. According to the obtained results, Ru/Al2O3 has the
highest net energy indicators than the Ni/Al2O3. The
conventional air stripping method for waste-derived
ammonia production has a negative net energy value
compared to the Microbial Fuel Cell (MFC) process.
Global Warming Potential (GWP) was calculated for both
catalysts routes and the results show that both processes
have close GWP values.
