Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Adsorption and Desorption Characteristics of Binary-component Volatile Organic compounds (Toluene-MEK) on Activated Carbon

이성분 휘발성유기화합물(Toluene-MEK)의 활성탄 흡착 및 탈착 특성

  • Yu, Seon A (Chemical Engineering and Applied Chemitry, Chungnam National University) ;
  • Cho, Jong Hoon (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • Park, Ji Yun (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • Rhee, Young Woo (Graduate School of Energy Science and Technology, Chungnam National University)
  • 유선아 (충남대학교 일반대학원 응용화학공학과) ;
  • 조종훈 (충남대학교 에너지과학기술대학원) ;
  • 박지윤 (충남대학교 에너지과학기술대학원) ;
  • 이영우 (충남대학교 에너지과학기술대학원)
  • Received : 2017.08.25
  • Accepted : 2017.09.27
  • Published : 2017.12.31
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Abstract

In this study, we have investigated the characteristics of adsorption and desorption of toluene, methyl ethyl ketone (MEK) and their binary component using activated carbon. The BET analysis was performed to identify the characteristics of the activated carbon, and the desorption characteristics with temperature were examined to find out an optimum desorption temperature. Ten cyclic experiments of adsorption-desorption were performed, where each adsorption temperature was maintained at room temperature and desorption temperature at upto $120^{\circ}C$. In case of single component cyclic test, the efficiencies of adsorption and desorption decreased as the cycle increased. MEK which has lower affinity with activated carbon than toluene showed lower efficiencies of adsorption and desorption. In case of binary component cyclic test, a typical roll-up phenomenon was observed during adsorption process, where MEK reaches at breakpoint first and then was swept out by toluene.

본 연구는 상용활성탄을 사용하여 산업공정에서 많이 사용되는 휘발성 유기화합물 중 톨루엔, 메틸에틸케톤(MEK), 이성분계(톨루엔-MEK)를 대상으로 흡착 및 탈착특성을 고찰하였다. 최적탈착온도를 설정하기 위해 온도별 탈착특성을 고찰하였고, 활성탄의 특성을 파악하기 위해 BET분석을 하였다. 상온에서 흡착실험을 진행하였고, $120^{\circ}C$까지 승온하여 탈착실험을 진행하였다. 이 실험을 10회 반복해서 진행하였다. 이를 통해 단일성분에서는 반복횟수가 많아질수록 흡착 및 탈착능이 줄어들며 활성탄과 상대적으로 친화력이 적은 MEK의 경우 톨루엔보다 낮은 흡착 및 탈착능을 보였다. 이성분계의 흡착 및 탈착 반복시험에서 친화력이 낮은 MEK가 먼저 파과되고 결과적으로 주입 농도보다 높은 농도로 탈착되었다.

Keywords

References

  1. Cho. J. H., "Activated Carbon Adsorption Characteristics of Multi-Component Volatile Organic Compounds in a Fixed Bed Adsorption Bed," Korean Chem. Eng. Res., 54(2), 239-247 (2016). https://doi.org/10.9713/kcer.2016.54.2.239
  2. Jeong, S. J., Lee, D. L., Kim, T. Y., Kim, J. H., Kim, S. J., and Cho, S. Y., "The Effect of Tesidual Water on the Adsorption Process of Carbon Tetrachloride by Activated Carbon Pellet," Korean Chem. Eng. Res., 40, 694-702 (2002).
  3. Lee, H. U., Kim, J. S., Han, C., Song, H. K., and Na, B. K., "Adsorption and Desorption Characteristics of MEK with Activated Carbon and Polymer Adsorbents," Korean Chem. Eng. Res., 29, 120-125 (1999).
  4. Rhee, Y. W., "Investigation on Recovery of Energy Resources from Waste Activated Carbons Generated in VOCs Adsorption Towers of Shiwha/Banwal Industrial Complex," Siheung Environmental Technology Development Center, Korea(2009).
  5. Rhee, Y. W., "Efficiency Evaluation of Activated Carbon Beds Operated on Shiwha/Banwal Industrial Complex," Siheung Environmental Technology Development Center, Korea(2007).
  6. Rhee, Y. W., "Verification on Efficient of Prevention Facility to Atmospheric Improvement Fund for Study of Representative Material Selection," Siheung Environmental Technology Development Center, Korea(2013).
  7. Woo, M. T., "Economic Evaluation Granular Activated Carbon On the Regeneration Cycle," Master Dissertation, Seoul National University of Science And Technology, Korea(2016).
  8. Lim, J. K., Lee, Lee, S. W., Kam, S. K., Lee, D. W., and Lee, M. G., "Adsorption Characteristics of Toluene Vapor in Fixed-bed Activated Carbon Column," J. Envion. Sci. Intern., 14, 977-983 (2003).
  9. Kwon, J. H., "Adsorption and Desorption Characteristics of VOCs on Activated Carbon according to Pore Areas," J. Environ. Sci. Intern., 14(2), (2005).
  10. Allen, T., Particle Size Measurements, 4th ed., Chapman & Hall, London, 547-628 (1990).
  11. Seo, M. C., "Design and Application of Air Pollution Control System Using Activated Carbon Adsorption at Discontinuous VOC Soures," Master Dissertation, Korea Polytechnic University(2006).
  12. Chiang, Y. C., Chiang, P. C., and Huang C. P., "Effects of Pore Structure and Temperature on VOC Adsorption on Activated Carbon," Carbon, 39, 523-534 (2001). https://doi.org/10.1016/S0008-6223(00)00161-5
  13. Allen, T., "Particle Size Measurements," Chamoman & Hall, 4, London, 547-628 (1990).
  14. Kim, H. S., Chang, H. S., Park, B. B., Park, Y. S., and Min, B. M., "Adsorption Characteristics of Aromatic Volatile Organic Compounds on Adsorbents," J. Environ. Sci Intern., 21, 481-488 (1999).
  15. Park, E. H., "Adsorption Equilibrium of Toluene, MEK, Cyclohexanone and Water on Activated Carbon and Polymeric Adsorbent," Theories and Applicat. Chem. Eng., 8(2), (2002).
  16. Kwang, J. W., "Adsorption Characteristics of Multi-component VOCs Including Poorly Adsorbable Chemicals on Activated Carbonaceous Adsorbents" Korean Chem. Eng. Res., 45(3), 277-285 (2007).
  17. Ryu, Y. K, Rho, D. S., and Lee, C. H., "Desorption Characteristics of MEK and Toluene from Activated Carbon Fiber by Supercritical Carbon Dioxide," Hwahak Konghak, 36(1), 56 (1998).
  18. Park, J. T., Gaseous Adsorption Properties of n-Hexane, Methylethylketone and Toluene on Granular Activated Carbon," Hwahak Konghak, 32(3), 476(1994).
  19. Yu, J. H., Activated carbon, Donghwa Co. in Korea, 2(2005)
  20. Kim, H. S., and Park, Y. S., "Binary Component Adsorption Characteristics of Benzene and Toluene at the Fixed Bed Adsorption Column with Activated Carbon," J. Environ. Sci. Intern., 25, 977-983 (2003).
  21. Kapoor, A., and Yang, R. T., "Roll-up in Fixed-Bed, Multicomponent Adsorption Under Pore-Diffusion Limitation," AIChE J., 33, 1215-1217 (1987). https://doi.org/10.1002/aic.690330717
  22. Tefera, D. T., Hashisho, Z., Philips, J. H., Anderson, J. E., and Nichols, M., "Modeling Competitive Adsorption of Mixtures of Volatile Organic Compounds in a Fixed-Bed of Beaded Activated Carbon," Environ. Sci. Technol., 48, 5108-5117 (2014). https://doi.org/10.1021/es404667f