Automotive manufacturers around the world are working on vehicles without greenhouse gas emissions. Although most cars are electric using batteries, hydrogen is another alternative for potentially green vehicles with little or no emission. A type of hydrogen called “blue” hydrogen consists of methane levied on natural gas.
Blue hydrogen has been considered green and an option to help reduce pollution and global warming. However, a new study from Cornell University and Stanford found that blue hydrogen production can be more harmful for the environment than to use fossil fuels. According to the study, creating a blue hydrogen has a carbon footprint of 20% larger than using natural gas or coal directly for heat.
Blue hydrogen also has a 60% larger carbon footprint than the use of diesel oil for heat. For those who are unknown, the US Department of Energy indicates that blue hydrogen begins with the conversion of methane into hydrogen and carbon dioxide with the aid of the vapor and pressure in a process that creates a hydrogen. “Grey”. An additional step creates blue hydrogen and involves capturing and sequestering carbon dioxide and other impurities of hydrogen.
It takes substantial energy to produce blue hydrogen, which is generally obtained from burning natural gas. The researchers of the project say that no effort has been made to capture carbon dioxide during the production of gray hydrogen in the past and the resulting greenhouse gas emissions were substantial. Blue hydrogen is positioned as a solution to this problem, but the study found emissions remains very high.
The study notes that emissions resulting from blue hydrogen are only 9 to 12% less than gray hydrogen emissions. The document stipulates that blue hydrogen “only works” as a strategy for it is possible to store carbon dioxide indefinite without repressing the atmosphere. Study researchers say that there is a “green” ecological hydrogen, produced from an electrolysis, which could be the path required for a sustainable future.
