For blue hydrogen production, CO2 emissions should be less 36.4 g/ MJ H2, i.e., less than 4.4 tons CO2/ton H2 produced or less than 0.39 kg of CO2per Nm3 of H2
For blue hydrogen production, CO2 emissions should be less 36.4 g/ MJ H2, i.e., less than 4.4 tons CO2/ton H2 produced or less than 0.39 kg of CO2per Nm3 of H2
According to Ghiyati et al. (2021), the carbon intensity and H2 yield for different technologies is shown in the pictures below.
Ghiyati et al., 2021. The best of blue hydrogen, Hydrocarbon Engineering.