Effect of surfactant, HCl and NH3 treatments on the regeneration of waste activated carbon used in selective catalytic reduction unit

Jeong Huy Ko; Rae-su Park; Jong-Ki Jeon; Do Heui Kim; Sang-Chul Jung; Sang Chai Kim; Young-Kwon Park

Journal of Industrial and Engineering Chemistry, Vol.32, 109-112, December, 2015

DOI10.1016/j.jiec.2015.08.003 Export Citation

Effect of surfactant, HCl and NH3 treatments on the regeneration of waste activated carbon used in selective catalytic reduction unit

Jeong Huy Ko, Rae-su Park¹, Jong-Ki Jeon², Do Heui Kim³, Sang-Chul Jung⁴, Sang Chai Kim⁵, and Young-Kwon Park^†

School of Environmental Engineering, University of Seoul, Seoul 130-743, Republic of Korea
¹Department of Bioenvironmental & Chemical Engineering, Chosun College of Science & Technology, Gwangju 501-744, Republic of Korea
²Department of Chemical Engineering, Kongju National University, Cheonan 331-717, Republic of Korea
³School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
⁴Department of Environmental Engineering, Sunchon National University, Suncheon 540-742, Republic of Korea
⁵Department of Environmental Education, Mokpo National University, Muan 534-729, Republic of Korea

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Deactivated waste activated carbon due to the deposition of boron in the exhaust gas from an incinerator was regenerated by the treatment with surfactant, HCl, and NH3. The catalysts were characterized using BET surface area, ICP, XPS and FT-IR spectra. Sequential treatment with surfactant and HCl removed the adsorbed boron very effectively. NH3 treatment increased the number of functional nitrogen groups in regenerated sample. For NH3 selective catalytic reduction (SCR) of NO, sequential treatments with surfactant, HCl, and NH3 showed the highest DeNOx activity, attributed to the increased metal removal efficiency, specific surface area and amount of nitrogen functional groups on the surface.

Keywords:Waste activated carbon;Boron;NO SCR;Sequential treatment;Surfactant;HCl and NH3

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