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Adsorption Characteristics of Acetone, Benzene, and Metylmercaptan by Activated Carbon Prepared from Waste Citrus Peel

폐감귤박으로 제조한 활성탄에 의한 아세톤, 벤젠 및 메틸메르캅탄의 흡착특성

  • Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University) ;
  • Kang, Kyung-Ho (Livestock Division, Jeju Special Self-Governing Province) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • Received : 2017.07.31
  • Accepted : 2017.10.01
  • Published : 2017.12.10

Abstract

Activated carbons were prepared from waste citrus peels using KOH, NaOH, and $ZnCl_2$ as activating chemicals. They were prepared at optimal conditions including the chemical ratio of 300%, activation time of 1.5h, and activation temperature of $900^{\circ}C$ for KOH, $700^{\circ}C$ for NaOH, and $600^{\circ}C$ for $ZnCl_2$, which were named as ACK, ACN, and ACZ, respectively. Using the activated carbons, their adsorption characteristics for three target gases such as acetone, benzene, and methylmercaptan (MM) were carried out in a batch reactor. The adsorption behavior of activated carbons for three target gases followed the Freundlich model better than the Langmuir. And the experimental kinetic data followed a pseudo-second-order kinetic model more than pseudo-first-order one. Following the intraparticle diffusion model suggested that the external mass transfer and particle diffusion were occurred simultaneously during the adsorption process.

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