Absorption of Flue Gas Carbon Dioxide in a Wet Scrubber using Sodium and Calcium Hydroxide Solvents

  • Hiram Ndiritu Jomo Kenyatta University of Agriculture and Technology
  • Karanja Kibicho Jomo Kenyatta University of Agriculture and Technology
  • Benson B. Gathitu Jomo Kenyatta University of Agriculture and Technology

Abstract

The release of carbon dioxide gas into the atmosphere is chiefly responsible for increased warming that is in turn causing changes in global climatic patterns. In order to minimize the impact this gas have on the environment, it is necessary that a capturing mechanism be developed. The main objective of this research therefore was to develop a method that would assist in reduction of carbon dioxide emissions generated from fossil fuel based combustion plants. The study also sought to establish the influence of concentration of hydroxide (calcium and sodium) solvents on the absorption of carbon dioxide. Diluted concentration of between 0 to 0.015 mol/liter was studied for two types of solvents namely; sodium hydroxide and calcium hydroxide. The former absorbed more than 14% of carbon dioxide compared to plain water while the latter absorbedmore than 35%. The improved performance of calcium hydroxide was attributed to its unique ionization capacity. Higherconcentrations in the range between 0.05 and 0.15 mol/liter were also tested for both hydroxides. Sodium hydroxide was foundto have superior performance which was attributed to its higher solubility.
Published
May 8, 2014
How to Cite
NDIRITU, Hiram; KIBICHO, Karanja; GATHITU, Benson B.. Absorption of Flue Gas Carbon Dioxide in a Wet Scrubber using Sodium and Calcium Hydroxide Solvents. JOURNAL OF SUSTAINABLE RESEARCH IN ENGINEERING, [S.l.], v. 1, n. 1, may 2014. ISSN 2409-1243. Available at: <http://sri.jkuat.ac.ke/ojs/index.php/sri/article/view/8>. Date accessed: 24 sep. 2017.
Section
Articles

Keywords

absorption rate; carbon capture; fossil fuels; solvent concentration