Ensures that blue hydrogen can emit more greenhouse gases than coal

Environmentalists hope that the green hydrogen will be used to decarbonise transport and industry, according to the AFP agency.

The authors of the study attack blue hydrogen, adding that “it seems very difficult to justify for climatic reasons”, referring to the support it receives internationally.

US President Joe Biden’s $ 1.2 trillion infrastructure bill, passed by the Senate on Tuesday, makes no mention of “blue hydrogen,” and includes $ 8 billion in funding for at least four ” regional clean hydrogen centers ”.

Some experts consider “clean” hydrogen to include blue as well, while some researchers warn that obtaining it requires carbon capture and storage (CSS), so the strategy “only works to the extent that it is possible to store carbon dioxide indefinitely without leaking. into the atmosphere. “

The production of blue hydrogen also consumes a lot of energy, with the emission of gases during the process of heating and pressurization as well as the use of natural gas as a fuel to generate hydrogen, adds the study carried out by Robert Howarth of Cornell University and Mark Jacobson Stanford.