The Change of Adsorption Characteristics for VOCs by HNO3 Activation of Adsorbent Prepared from MSWI Fly Ash

질산을 이용한 Fly Ash 흡착제의 표면 활성화에 따른 VOCs 흡착 특성의 변화

  • Shim Choon-Hee (Department of Environmental Engineering, Graduate School, Kangwon National University) ;
  • Lee Woo-Keun (Department of Environmental Engineering, Graduate School, Kangwon National University)
  • Published : 2005.08.01


The objective of this research is to improve adsorption efficiency of adsorbent made from MSWI (Municipal Solid Waste Incinerator) ny ash by $HNO_3$ activation. The acidity and the basicity were determined by Boehm's method and the surface structure was studied by BET method with N2 adsorption. The adsorption properties were investigated with benzene and MEK (Methylethylketone). $HNO_3$ activation can modify the surface property of an adsorbent such as specific surface area, pore volume, and functional group. According to the results, the specific surface area of the adsorbent was increased from $309.2m^2/g\;to\;553.2 m^2/g$ by activation. Also oxygen-containing functional groups were formed on it.


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