한국환경과학회지 (Journal of Environmental Science International)

  • 제20권2호
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  • Pages.223-229
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  • 2011
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  • 1225-4517(pISSN)
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  • 2287-3503(eISSN)
한국환경과학회 (The Korean Environmental Sciences Society)
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마이크로파조사를 위한 개질화 활성탄의 톨루엔 탈착

Toluene Desorption of Modified Activated Carbon for Microwave Irradiation

  • Choi, Sung-Woo (Department of Environmental Science and Engineering, Keimyung University) ;
  • Chu, Heon-Jik (Department of Environmental Science and Engineering, Keimyung University)
  • 투고 : 2010.10.28
  • 심사 : 2011.01.05
  • 발행 : 2011.02.28
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초록

Toluene desorption of modified activated carbon for microwave irradiation was evaluated. As a virgin GAC reacted from microwave energy, it created an "arcing" between GAC particles in desorption process. The arcing became more and more vigorous and achieved a red flame of GAC. The silica coated GAC(Si/GAC) was developed to prevent arcing phenomenon and temperature control problem. The result shows virgin GAC with 5wt%, 10wt% and 20wt% silica had no arcing and could control temperature very well. However, the adsorption rate of Si/GAC was decreased by coated silica amount due to decreasing surface area of GAC. The 5wt% Si/GAC adsorption rate was quite similar to virgin GAC adsorption rate. After adsorption, the toluene-loaded GAC and Si/GAC was reactivated by 2450MHz MW irradiation with 300W for 5 min. Quantitative desorption of the toluene was achieved at MW irradiation at 300W with desorption efficiencies as high as 98.59% to 84.65%% after four cycles.

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