1.9 C
London
Thursday, December 2, 2021

It’s time to remove carbon from the atmosphere. But how?




The ambiguity of how these international exchanges will work makes it difficult to agree on net zero or even what method“The definition of net zero, no one has the weakest idea,” said Janos Padztor, executive director of the Carnegie Climate Governance Initiative. Broadly speaking, a net-zero country should add and remove the same amount of carbon from the atmosphere, he continued, “what it means, how you measure it, how you prove it, remains to be seen.”

More importantly, these experts say that a goal of zero is not low enough. We must remove some of the carbon that is already in the atmosphere. “We will almost certainly exceed 1.5 in the next few decades,” Hausfather said. “So the only way to get back to 1.5 C is to actively absorb carbon from the atmosphere. There are few other ways to do this.”

“The reality is that we didn’t do what we were supposed to do 30 years ago, which is to reduce our emissions at the time, so that we won’t be where we are today,” Pasztor agreed. “It’s too late to just reduce emissions.”

Carbon capture technology

The U.S. government seems to have got the message: On Tuesday, the White House announced Carbon negative film (“Moon Landing” game), an initiative aimed at accelerating the development of carbon removal technology.In a new report, The White House acknowledged that certain industries will stubbornly resist decarbonization-such as manufacturing and rail transportation. “Because of this,” the report said, “the removal of carbon dioxide2 Emissions from the atmosphere are essential for the United States to reach net zero emissions by 2050 and achieve net negative emissions thereafter. “

There are two main types of carbon capture technologies. Carbon capture and storage (CCS) refers to the capture and storage of emissions from fossil fuel power plants.Carbon dioxide removal or CDR involves a separate machine that sucks in air and passes it through a membrane that pulls out the CO2(This technology is also called direct air capture.) Basically, capture and storage methods will isolate the emissions currently produced by a country, while air removal methods will isolate legacy emissions that are already in the atmosphere.

But what will happen to that CO2 Once captured?One option is to dissolve it in water—a bit like the largest glass of soda in the world—and then pump it underground into the highly active basalt, which absorbs carbon and Lock it up. Injection of captured CO2 Underground is a fairly permanent solution. (Unless the super volcano blows all these materials into the sky.)

Another option is to convert it into fuel for airplanes and cargo ships. Considering the size of the machine, both are difficult parts of the transportation industry to decarbonize. This strategy is actually not carbon negative, but carbon neutral: carbon is extracted from the air, burned again, and then returned to the atmosphere. This is better than mining more fossil fuels. It reduces the demand for new fuel sources, but it is still not an overall reduction.





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