NH3 selective catalytic reduction (SCR) of nitrogen oxides (NOx) over activated sewage sludge char

Yong Beom Jo, Jin Sun Cha, Jeong Huy Ko, Min Chul Shin, Sung Hoon Park, Jong Ki Jeon, Seung Soo Kim, Young Kwon Park

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

The de-NOx performance of sewage sludge chars activated physically using water vapor or chemically using KOH was evaluated. Characteristics of chars activated under different activation temperatures, water vapor concentrations, and KOH/char ratios were analyzed by N2 adsorption-desorption and FT-IR. Chemically activated chars were more efficient in removing NOx due to their higher surface area, oxygen functional group and NH3 adsorption than physically activated chars. The de-NOx performance of the activated chars is influenced more by chemical properties such as oxygen functional groups and NH3 adsorption sites than by physical properties like specific surface area and pore volume.

Original languageEnglish
Pages (from-to)106-113
Number of pages8
JournalKorean Journal of Chemical Engineering
Volume28
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • Chemical Activation
  • Physical Activation
  • Sewage Sludge Char

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