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

Korean Journal of Chemical Engineering, Vol.28, No.1, 106-113, January, 2011

DOI10.1007/s11814-010-0283-7 Export Citation

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

Yong Beom Jo¹, Jin Sun Cha², Jeong Huy Ko¹, Min Chul Shin³, Sung Hoon Park⁴, Jong-Ki Jeon⁵, Seung-Soo Kim⁶, and Young-Kwon Park^{1, 2, †}

¹Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul 130-743, Korea
²School of Environmental Engineering, University of Seoul, Seoul 130-743, Korea
³Material Testing Center, Korea Testing Laboratory, Seoul 152-718, Korea
⁴Department of Environmental Engineering, Sunchon National University, Suncheon 540-742, Korea
⁵Department of Chemical Engineering, Kongju National University, Cheonan 330-717, Korea
⁶Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, Korea

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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.

Keywords:Sewage Sludge Char;De-NOx;Physical Activation;Chemical Activation

[References]

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