The United States developed a new method of CO2 capture

According to ScienceDaily, the Lawrence Livermore lab team took advantage of ionic liquid solution as a CO ₂ absorber, developing a new clean, stable and efficient CO ₂ collection method. fruits . The study was published in the latest issue of ChemSusChem.

Along with global warming, countries are trying to reduce CO ₂ emissions from fuel oil, the CO ₂ collection method has become a key research topic. CO ₂ techniques mainly use chemical absorption. CO2 will produce a reaction with amine, combined under low temperature environment and will separate when high temperature. Normally, CO ₂ emissions are generated through amine solution and CO ₂ dissociation, then in the appropriate position to heat the amine solution to release CO ₂ .

Currently only a few coal-fired power plants use monoethanolamine as a CO ₂ absorber. Monoethanolamine is highly aggressive, it must also use large devices, more effectively only when CO _{2 is} in mild and moderate pressure. Therefore, cost and performance are not ideal.

In the past few years, Maiti - a researcher in this laboratory has been studying in depth how to find CO ₂ absorbers. He tested several ionic solutions that could effectively resolve CO ₂ , collecting valuable data. Unlike typical organic solvents, ionic solution usually does not evaporate, so it does not produce toxic emissions, convenient use.

He also discovered, when using ionic solution as a CO ₂ absorber, can overcome many disadvantages of monoethanolamine, cleaner than any other current method, easy to use. Good chemical stability, low aggressive properties, almost no evaporation pressure, can create films for use. A wide range of ionic solutions, many ionic types with high CO ₂ resolution can be selected.

(Photo: Sciencenet)

Maiti has designed a tool to calculate quantum chemistry of quantum chemistry, which can calculate the ability to resolve CO ₂ chemistry for any concentration, to measure the CO ₂ efficiency of fecal matter. solve in ionic solution. The research data in the past few years has proven, this method is very accurate.

According to the source, he used this method to calculate a resolution, CO ₂ resolution was evaluated to be most effective in the laboratory. He hopes that with this precise calculation method, scientists will discover better resolution substances, gradually improve the efficiency of obtaining CO2 emissions.