Reducing global greenhouse gas emissions is essential to avoiding a climate disaster, but current carbon removal methods are inadequate and costly. Now, researchers from the University of California, Berkeley, have proposed a scalable solution using inexpensive technologies to remove carbon from the atmosphere and safely storing it for thousands of years. As reported in the journal Proceedings of the National Academy of Sciences, researchers propose growing biomass crops to capture carbon from the air and burying the harvested vegetation in engineered dry bio-landfills. This approach, called agro-sequestration, keeps the buried biomass dry with the aid of salt to suppress microbials and stave off decomposition, enabling stable sequestration of all the biomass carbon. The result is carbon-negative - a potential game changer, according to Eli Yablonovitch, lead author and professor in UC Berkeley's Department of Electrical Engineering and Computer Sciences. "(P)roper engineering can solve 100% of the climate crisis, at manageable cost," he said. On a global scale, the carbon-negative sequestration method has the "potential to remove current annual carbon dioxide emissions as well as prior years' emissions from the atmosphere." For every metric ton of dry biomass, it would be possible to sequester about two tons of carbon dioxide. (UC Berkley 04/12/23) To more effectively sequester biomass and carbon, just add salt (spacedaily.com)
OR ADD SEAWATER
A University of Texas at Arlington researcher is working to create a process that uses seawater to remove carbon dioxide from the atmosphere. Erika La Plante, assistant professor in the Materials Science and Engineering Department, received a $125,000 subgrant from the University of California-Los Angeles (UCLA) as part of a larger Department of Energy Advanced Research Projects Agency-Energy grant for the work. (uta 04/12/23) UTA research uses seawater to remove carbon dioxide from atmosphere (spacedaily.com)
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