Environmental Chemistry Letters

, Volume 16, Issue 3, pp 1095–1100 | Cite as

Higher CO2 absorption using a new class of calcium hydroxide (Ca(OH)2) nanoparticles

  • Huiying Zhang
  • Ruiqiang Liu
  • Tangyuan Ning
  • Rattan Lal
Original Paper


With rising atmospheric carbon dioxide (CO2) concentrations globally, there is an urgent need for highly efficient CO2 capture technologies. This report introduces an innovative technology to remove CO2 of point sources using calcium hydroxide (Ca(OH)2) nanoparticles of 10 nm. Superior to regular CO2 absorption methods, the nano-Ca(OH)2 chemically increased reactive surface area and gas retention time of the scrubbing system. Experimental data show that CO2 absorption capacity of the nano-suspension was over 8 times higher than that of the regular Ca(OH)2 particles of 2 µm in size. In addition to CO2 removal, nano-Ca(OH)2 also has high potential to treating acidic gases such as HCl, SOx, or NOx, for improving air quality and offsetting the global warming trend. This is the first study on using Ca(OH)2 nanoparticles for efficient CO2 capture.


Nanoparticle Absorption Carbon dioxide Calcium hydroxide Greenhouse gas Environmental protection 



This study was partly funded by Hechi University Start-Up Grant (XJ2015KQ006) awarded to Dr. Huiying Zhang.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Chemical and Biological EngineeringHechi UniversityYizhou, GuangxiChina
  2. 2.Carbon Management and Sequestration Center (C-MASC), School of Environment and Natural ResourcesThe Ohio State UniversityColumbusUSA
  3. 3.State Key Laboratory of Crop BiologyShandong Agricultural UniversityTai’anChina

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