According to the Physicist Network, scientists have developed a method for the rapid production of magnesite. As a mineral that can store carbon dioxide (CO2), magnesite can reduce the long-term presence of CO2 in the atmosphere and thus resist the effects of global warming if it can achieve industrial scale mass production in the future. The research report was presented at the Gold Schmidt meeting of the important international academic conference on geochemistry in Boston.
Magnesite is a magnesium carbonate mineral. After the solution containing magnesium acts on calcite, it will turn calcite into magnesite, so magnesite also belongs to the calcite family. In addition, magnesium-rich rocks also change into magnesite. It is understood that one ton of natural magnesite can remove about half a ton of CO2 from the atmosphere, but the speed is very slow. Therefore, although this technology is beneficial to reduce CO2 in the atmosphere, there are still problems in terms of practical operation and economic cost.
Ian Bauer, a professor at Trent University in Canada who led the study, said that they revealed the formation of magnesite under low temperature conditions and proposed a method that can significantly accelerate its crystallization process: using polystyrene The microspheres act as a catalyst to allow the magnesite to form within 72 days. Since the chemical properties of the microspheres remain unchanged throughout the reaction, efficient use can be achieved and the formation time of the magnesite can be greatly shortened. At the same time, this process can occur at room temperature, which means that the production of magnesite is very energy efficient.
It is understood that this research work is still in the experimental stage. It has been confirmed that magnesite can be used for carbon sequestration, that is, permanent storage of CO2 in the atmosphere, but further scientific methods are needed to complete the refinement of storage technology.
Professor Peter Kellerman of Columbia University said: "Technologists have learned the principles and mechanisms of natural magnesite crystallization at low temperatures and applied it to the artificial production of magnesite. This provides a relatively low cost. The carbon storage pathway, even in the future, can remove CO2 from the air, which is very exciting."
(China Powder Network Editing / Sancha)
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