About The Journal
  Aims and Scope
  Editorial Board
  Submit a Manuscript 
  Subscription Information
  Guidelines for Publication
  Ethics
Articles & Issues
  Search
  Issue
  Online First
  KJChE on
For Authors
  Instructions to Authors
  Ethical Responsibilities of
  Authors in KJChE
  Ethics in Publishing
  Peer Review Process
  Author's Checklist
  Copyright Transfer Form
Contact us
 
 
 
Issue
Korean Journal of Chemical Engineering,
Vol.30, No.3, 642-648, 2013
Selective removal mercury (II) from aqueous solution using silica aerogel modified with 4-amino-5-methyl-1,2,4-triazole-3(4H)-thion
Tadayon F, Saber-Tehrani M, Motahar S
Silica aerogel surface modifications with chelating agents for adsorption/removal of metal ions have been reported in recent years. This investigation reported the preparation of silica aerogel (SA) adsorbent coupled with metal chelating ligands of 4-amino-5-methyl-1,2,4-triazole-3(4H)-thion (AMTT) and its application for selective adsorption of Hg(II) ion. The adsorbent was characterized by Fourier transform infrared spectra (FTIR) and thermo gravimetric analysis (TGA) measurements, nitrogen physisorption and scanning electron microscope (SEM). Optimal experimental conditions including pH, temperature, adsorbent dosage and contact time have been established. Langmuir and Freundlich isotherm models were applied to analyze the experimental data. The best interpretation for the experimental data given by the Langmuir isotherm equation and the maximum adsorption capacity of the modified silica gel and silica aerogel was 142.85 and 17.24mgg^(-1), respectively. Thermodynamic parameters such as Gibbs free energy (ΔG°), standard enthalpy (ΔH°) and entropy change (ΔS°) were investigated. The adsorbed Hg(II) on the SA-AMTT adsorbents could be completely eluted by 1.0M KBr solution and recycled at least four times without the loss of adsorption capacity. The results of the present investigation illustrate that modified silica aerogel with AMTT could be used as an adsorbent for the effective removal of Hg(II) ions from aqueous solution.
Keywords: Mercury; Silica Aerogel; Removal; Selectivity; Adsorption
[References]
  1. Anirudhan TS, Divya L, Ramachandran M, J. Hazard. Mater., 157(2-3), 620, 2008
  2. Namasivayam C, Periasamy K, Water Res., 27, 1663, 1993
  3. Directive 2000/60/EC of the European Parliament and of the Council of October 23 (2000). (L327 of 22-12-2000).
  4. Say R, Birlik E, Erdemgil Z, Denizli A, Ersoz A, J. Hazard.Mater., 150, 560, 2008
  5. United Nations Environment Programme: Chemicals, Global Mercury Assessment, Geneva, Switzerland, December, 2002
  6. Von Canstein H, Li Y, Timmis KN, Deckwer WD, Wagner-Dobler I, Appl. Environ. Microbiol., 65, 5279, 1999
  7. Matlock MM, Howerton BS, Atwood DA, Water Res., 36, 4757, 2002
  8. Kratochvil D, Volesky B, Water Res., 32, 2760, 1998
  9. Lisha KP, Pradeep AT, Gold Bull., 42, 58, 2009
  10. Terashima Y, Ozaki H, Sekine M, Water Res., 20, 537, 1986
  11. Oehmen A, Viegas R, Velizarov S, Reis MAM, Crespo JG, Desalination, 199(1-3), 405, 2006
  12. Budinova T, Petrov N, Parra J, Baloutzov V, J. Environ. Manage., 88, 165, 2008
  13. Lisha KP, Maliyekkal SM, Pradeep T, Chem. Eng. J., 160(2), 432, 2010
  14. Pradeep T, Anshup, Thin Solid Films, 517(24), 6441, 2009
  15. Wang CT, Ro SH, Appl. Catal. A: Gen., 285(1-2), 196, 2005
  16. Yang RT, Adsorbents: Fundamentals and applications, Wiley-Interscience, 2003
  17. Ruthven DM, Principles of adsorption and adsorption processes, Wiley-Interscience, 1984
  18. Ramadan H, Ghanem A, El-Rassy H, Chem. Eng. J., 159(1-3), 107, 2010
  19. Standeker S, Veronovski A, Novak Z, Knez Z, Desalination, 269(1-3), 223, 2011
  20. Dornow A, Menzel H, Marx P, Chem. Ber., 97, 2173, 1964
  21. Brunauer S, Emmett PH, Teller E, J. Am. Chem. Soc., 60, 309, 1938
  22. Walton KS, Snurr RQ, J. Am. Chem. Soc., 129(27), 8552, 2007
  23. Socrates G, Infrared and raman characteristic group frequencies: Tables and charts, 3rd Ed., John Wiley & Sons, 2001
  24. Duran A, Fernandez Navarro JM, Casariego P, Joglar A, J.Non-Cryst. Solids., 82, 391, 1986
  25. Estevez-Hernandez O, Otazo-Sanchez E, Spectrochim. Acta Part A., 62, 964, 2005
  26. Estevez-Hernandez O, Otazo-Sanchez E, Hidalgo-Hidalgo de Cisneros JL, Naranjo-Rodriguez I, Reguera E, Spectrochim.Acta Part A., 64, 961, 2006
  27. Rao MM, Ramesh A, Rao GPC, Seshaiah K, J. Hazard. Mater., 129(1-3), 123, 2006
  28. Kumar YP, King P, Prasad VSRK, Chem. Eng. J., 129(1-3), 161, 2007
  29. Khattri SD, Singh MK, J. Hazard. Mater., 167(1-3), 1089, 2009
  30. Langmuir I, J. Am. Chem. Soc.,, 40, 1361, 1918
  31. Freundlich H, T. Faraday Soc., 28, 195, 1932
  32. El Mouzdahir Y, Elmchaouri A, Mahboub R, Gil A, Korili SA, J. Chem. Eng. Data, 52(5), 1621, 2007
  33. Duong DD, Adsorption analysis: Equilibria and kinetics, Imperial College Press, London, 1998
  34. Horsfall M, Spiff AI, Abia AA, B. Korean Chem. Soc., 25, 969, 2004
  35. Bhattacharya AK, Naiya TK, Mandal SN, Das SK, Chem. Eng. J., 137(3), 529, 2008
  36. Singha B, Das SK, Colloids Surf. B., 84, 221, 2011
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.