A study on the desulfurization efficiency of limestone sludge with various admixtures

Sung Kwan Seo, Yong Sik Chu, Kwang Bo Shim, Jong Kyu Lee, Hun Song

Research output: Contribution to journalArticle

1 Scopus citations


The flue gas desulfurization (FGD) process is one of the most effective methods to reduce the amount of SO2 gas (up to 90%) generated by the use of fossil fuel. Limestone is usually used as a desulfurizing agent in the wet-type FGD process; however, the limestone reserves of domestic mines have become exhausted. In this study, limestone sludge produced from the steel works process is used as a desulfurizing agent. Seven different types of additives are also used to improve the efficiency of the desulfurization process. As a result, alkaline additive is identified as the least effective additive, while certain types of organic acids show higher efficiency. It is also observed that the amount of FGD gypsum, which is a by-product of the FGD process, increases with the used of some of those additives.

Original languageEnglish
Pages (from-to)479-482
Number of pages4
JournalJournal of the Korean Ceramic Society
Issue number6
Publication statusPublished - 2015 Nov



  • Alkali admixture agent
  • FGD systems
  • Gypsum
  • Limestone sludge
  • Organic acid

Cite this