Adsorption property of heavy metals onto MCM-41 and expanded graphite

MCM-41 및 팽창흑연의 중금속 흡착특성

  • Published : 2012.04.16


MCM-41(Mobil's Composition of Matter-41) and expanded graphite(EG) were investigated as potential adsorbents for heavy metal ions including Pb(II), Cu(II) and Ni(II) in various aqueous chemistries. MCM-41 showed shorter equilibrium times and higher adsorption capacities for all three heavy metal ions compared to expanded graphite. The adsorption of three heavy metal ions was significantly affected by the solution pH due to the competition with $H_{3}O^{+}$ at lower pH and precipitation at neutral or higher pH. Adsorptions of heavy metal ions onto MCM-41 and expanded graphite were successfully described with the pseudo-second-order model. During the competitive adsorption of three heavy metal ions, the selectivity of Pb(II) was highest and almost same selectivity was observed with Cu(II) and Ni(II) when MCM-41 was used as an adsorbent, while the expanded graphite exhibited the highest selectivity to Pb(II), followed by Ni(II) and Cu(II).


  1. 박상원 (2007) 나노 메조포러스 흡착제를 이용한 중금속 흡착에 관한 연구, 한국환경과학회지, 16(6), pp. 689-698.
  2. 박수진, 김기석, 홍성권 (2003) 습식방법에 의한 팽창흑연의 제조 및 특성에 관한 연구, 화학공학, 41(6), pp. 802-807.
  3. 박수진, 김기석 (2004) 팽창흑연의 오일 흡착특성에 관한 연구, Korean Chem. Eng. Res., 42(3), pp. 362-367.
  4. 임순호, 장지영, 한미영, 홍순만, 엄문광, 황석호 (2008) 유무기 하이브리드 소재의 고차구조 제어기술, Polymer Science & Technology, 19(6), pp. 530-540.
  5. 최현석, 이동규, 조국진, 이채영, 정진석, 유익근, 신은우 (2006) 계면활성제가 담지된 메조포러스 실리케이트에 의한 수중 납이온 제거, Korean Chem. Eng. Res., 44(2), pp. 172-178.
  6. Adriano, D. (2001) Trace elements in terrestrial environments: Biogeochemistry, bioavailability, and risks of metals, Springer Verlag, New York.
  7. Beck, J. S., Vartuli, J. C., Roth, W. J., Leonowicz, M. E., Kresge, C. T., Schmitt, K. D., Chu, C. T. W., Olson, D. H., Sheppard, E. W., McCullen, S. B., Higgins, J. B., Schlenker, J. L. (1992) A new family of mesoporous molecular sieves prepared with liquid crystal templates, J. Am. Chem. Soc., 114, pp. 10834-10843.
  8. Covelo, E. F., Vega, F. A., Andrade, M. L. (2007) Simultaneous sorption and desorption of Cd, Cr, Cu, Ni, Pb, and Zn in acid soils I. Selectivity sequences, J. Hazard. Mater., 147, pp. 852-861.
  9. Feng, X., Fryxell, G. E., Wang, L. Q., Kim, A. Y., Liu, J. Kemner, K. M. (1997) Functionalized Monolayers on ordered mesoporous supports, Scinece, 276, pp. 923-926.
  10. Ho. Y. S. (2006) Review of second-order models for adsorption systems, J. Hazard. Mater., B136, pp. 681-689.
  11. James, R. O., Healy, T. W. (1972) Adsorption of hydrolyzable metals at the oxide-water interface, III. A thermodynamic model of adsorption, J. Colloid Interface Sci., 40, pp. 65-80.
  12. Jiang, M., Jin, X., Lu, X. Q., Chen, Z. (2010) Adsorption of Pb(II), Cd(II), Ni(II) and Cu(II) onto natural kaolinite clay, Desalination, 252, pp. 33-39.
  13. Kang, F., Zheng, Y. P., Wang, H. N., Nishi Y., Inagaki, M. (2002) Effect of preparation conditions on the characteristics of expanded graphite, Carbon, 40, pp. 1575-1581.
  14. Lagergren, S. (1898) Zur theorie der sogenannten adsorption geloster stoffe, K. Sven. Vetenskapsakad. Handl. 24, pp. 1-39.
  15. Lee, B., Kim, Y., Lee, H., Yi, J. (2001) Synthesis of functionalized porous silicas via templating method as heavy metal ion adsorbents: the introduction of surface hydrophilicity onto the surface of adsorbent, Microporous and Mesoporous Materials, 50, pp. 77-90.
  16. Mercier, L., Pinnavaia, T. J. (1998) Heavy metal ion adsorbents formed by the grafting of a thiol funcationality to mesoporous silica molecular sieves: factors affecting Hg(II) uptake, Environ. Sci. Technol., 32, pp. 2749-2754.
  17. Ozacar, M., Sengil, I. A. (2003) Adsorption of reactive dyes on calcined alunite from aqueous solutions, J. Hazard. Mater., 98(1-3), pp. 211-224.
  18. Park, J. H., Lamb, D., Paneerselvam, P., Choppala, G., Bolan, N., Chung, J. W. (2011) Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils, J. Hazard. Mater., 185, pp. 549-574.
  19. Puanngam, M., Unob, F. (2008) Preparation and use of chemically modified MCM-41 and silica gel as selective adsorbents for Hg(II) ions, J. Hazard. Mater., 154, pp. 578-587.
  20. Unlu, N., Ersoz, M. (2006) Adsorption characteristics of heavy metal ions onto a low cost biopolymeric sorbent from aqueous solution, J. Hazard. Mater., 136, pp. 272-280.
  21. Unuabonah, E. I., Adebowale, K. O., Olu-Owolabi, B. I., Yang, L. Z., Kong, L. X. (2008) Adsorption of Pb(II) and Cd(II) from aqueous solutions onto sodium tetraborate-modified kaolinite clay: equilibrium and thermodynamic studies, Hydrometallurgy, 93, pp. 1-9.
  22. Usman, A. R. A. (2008) The relative adsorption selectivities of Pb, Cu, Zn, Cd and Ni by soils developed on shale in New Valley, Egypt, Geoderma, 144, pp. 334-343.
  23. Veeresh, H., Tripathy, S., Chaudhuri, D., Hart, B. R., Powell, M. A. (2003) Competitive adsorption behavior of selected heavy metals in three soil types of India amended with fly ash and sewage sludge, Environ. Geol., 44, pp. 363-370.