화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.53, No.6, 770-775, December, 2015
DOI10.9713/kcer.2015.53.6.770  Export Citation
Thermodynamic and Isothermal Studies of Congo RedAdsorption onto Modified Bentonite
Basava Rao. V. V., and Mohan Rao. T1, †
  • Dean, Faculty of Technology, University College of Technology, OU, India.
  • 1Associate Prof., Dept. of Chemical Eng., Bapatia Engineering College, A. P., India.
E-mail:
Adsorption of Congo Red (CR) from dye-containing effluents using modified bentonite (MB) has been investigated here. Isothermal studies were conducted to ascertain maximum adsorption capacity of the adsorbent. MB exhibited superior adsorption capacity compared to other low-cost adsorbents. Experimental data fitted the Langmuir isotherm better, indicating monolayer coverage of CR on MB. The feasibility of the process was measured in terms of separation factor RL. The values of Gibbs free energy, entropy and enthalpy were calculated from the thermodynamics of the process. Adsorption was feasible and spontaneous, being endothermic. Analytical techniques including SEM, EDS, FTIR and XRD were applied to characterize MB and also to provide conclusive proof of the accumulation of CR on to MB.
Keywords:Congo red;Bentonite;Isotherms;Thermodynamics;XRD;SEM;FTIR
  1. Water pollution, accessed August 20, 2015, http://www.sustainablecommunication.org/eco360/what-is-eco360s-causes/waterpollution.
  2. Telke AA, Joshi SM, Jadhav SV, Tamboli DP, Govindwar SP, Biodegradation, 21(2), 283 (2010)
  3. Han RP, Ding DD, Xu YF, Zou WH, Wang YF, Li YF, Zou L, Bioresour. Technol., 99(8), 2938 (2008)
  4. Hu QH, Xu ZP, Qiao SZ, Haghseresht F, Wilson M, Lu GQ, J. Colloid Interface Sci., 308(1), 191 (2007)
  5. Wang CF, Li JS, Wang LJ, Sun XY, Huang JJ, Chin. J. Chem. Eng., 17(3), 513 (2009)
  6. Alver E, Metin AU, Chem. Eng. J., 200, 59 (2012)
  7. Errais E, Duplay J, Darragi F, M'Rabet I, Aubert A, Huber F, Morvan G, Desalination, 275(1-3), 74 (2011)
  8. Errais E, Duplay J, Elhabiri M, Khodja M, Ocampo R, Baltenweck-Guyot R, Darragi F, Colloids Surf. B: Biointerfaces, 403, 69 (2012)
  9. Akar ST, Uysal R, Chem. Eng. J., 162(2), 591 (2010)
  10. Hsu TC, Fuel, 87(13-14), 3040 (2008)
  11. Rusu L, Harja M, Simion AI, Suteu D, Ciobanu G, Favier L, Korean J. Chem. Eng., 31(6), 1008 (2014)
  12. Mao J, Won SW, Min J, Yun YS, Korean J. Chem. Eng., 25(5), 1060 (2008)
  13. Vijaya Kumar G, Ramalingam P, Kim MJ, Yoo CK, Kumar MD, Korean J. Chem. Eng., 27(5), 1469 (2010)
  14. Mehmood A, Bano S, Fahim A, Parveen R, Khurshid S, Korean J. Chem. Eng., 32(5), 882 (2015)
  15. Lafi R, Fradj A, Hafiane A, Hameed BH, Korean J. Chem. Eng., 31(12), 2198 (2014)
  16. Gaikwad RW, Kinldy SAM, Korean J. Chem. Eng., 26(1), 102 (2009)
  17. Khan A, Badshah S, Airoldi C, Colloids Surf. B: Biointerfaces, 87, 88 (2011)
  18. Clays and minerals, accessed August 20,2015, http://www.claysandminerals.com/.
  19. Robertson RHS, Fuller’s Earth: a History of Calcium Montmorillonite, Volturna Press, Hythe, Kent, England(1986).
  20. Odom IE, Commercial Uses of Clay Minerals, American Colloid Company, Arlington Heights, IL(1989).
  21. Minerals and Ores-Applications, accessed August 20, 2015, http://www.sorptive.org/applications/.
  22. Li Q, Yue QY, Sun HJ, Su Y, Gao BY, J. Environ. Manage., 91, 1601 (2010)
  23. Rahman A, Urabe T, Kishimoto N, Procedia Environ. Sci., 17, 270 (2013)
  24. Lian LL, Guo LP, Wang AX, Desalination, 249(2), 797 (2009)
  25. Bhattacharyya KG, Sharma A, J. Environ. Manage., 71(3), 217 (2004)
  26. Chatterjee S, Colloids Surf. A: Physicochem. Eng. Asp., 299(1-3), 146 (2007)
  27. Deo N, Ali M, Indian J. Environ. Prot., 13(7), 496 (1993)
  28. Lorenc-Grabowskaa E, Gryglewicz G, Dyes Pigment., 74(1), 34 (2007)
  29. Wong YC, Szeto YS, Cheung WH, McKay G, Langmuir, 19(19), 7888 (2003)
  30. Duong DD, Adsorption Analysis: Equilibria and Kinetics, Imperial College Press, London(1998).
  31. Tien C, Adsorption Calculations and Modeling, Butterworth-Heinemann, Boston(1994).
  32. Ozcan A, Oncu EM, Ozcan AS, J. Hazard. Mater., 129(1-3), 244 (2006)
  33. Khattri SD, Singh MK, Indian J. Chem. Technol., 6(2), 112 (1999)
  34. Liu Y, Liu Y, Sep. Purif. Technol., 61(3), 229 (2008)
  35. Xia CL, Jing Y, Jia YZ, Yue DY, Ma J, Yin XJ, Desalination, 265(1-3), 81 (2011)
  36. Erdem B, Ozcan A, Ozcan AS, Appl. Surf. Sci., 256(17), 5422 (2010)
  37. Ozcan AS, Erdem B, Ozcan A, J. Colloid Interface Sci., 280(1), 44 (2004)
  38. Guo JZ, Chen SW, Liu L, Li B, Yang P, Zhang LJ, Feng YL, J. Colloid Interface Sci., 382, 61 (2012)
  39. Anirudhan TS, Rijith S, Tharun AR, Colloids Surf. A: Physicochem. Eng. Asp., 368, 13 (2010)
  40. Anirudhan TS, Suchithra PS, Rijith S, Colloids Surf. A: Physicochem. Eng. Asp., 326, 147 (2008)
  41. Futalana CM, Kan CC, Dalidac ML, Hsien KJ, Pascua C, Wan MW, Carbohydr. Polym., 83, 528 (2011)
  42. Yaneva Z, Koumanova B, J. Colloid Interface Sci., 293(2), 303 (2006)
  43. Namasivayam C, Kavitha D, Dyes Pigment., 54(1), 47 (2002)
  44. Namasivayam C, Arasi DJSE, Chemosphere, 34(2), 401 (1997)
  45. Rao VVB, Rao SRM, Chem. Eng. J., 116(1), 77 (2006)
  46. Water pollution, accessed August 20, 2015, http://www.sustainablecommunication.org/eco360/what-is-eco360s-causes/waterpollution.
  47. Telke AA, Joshi SM, Jadhav SV, Tamboli DP, Govindwar SP, Biodegradation, 21(2), 283 (2010)
  48. Han RP, Ding DD, Xu YF, Zou WH, Wang YF, Li YF, Zou L, Bioresour. Technol., 99(8), 2938 (2008)
  49. Hu QH, Xu ZP, Qiao SZ, Haghseresht F, Wilson M, Lu GQ, J. Colloid Interface Sci., 308(1), 191 (2007)
  50. Wang CF, Li JS, Wang LJ, Sun XY, Huang JJ, Chin. J. Chem. Eng., 17(3), 513 (2009)
  51. Alver E, Metin AU, Chem. Eng. J., 200, 59 (2012)
  52. Errais E, Duplay J, Darragi F, M'Rabet I, Aubert A, Huber F, Morvan G, Desalination, 275(1-3), 74 (2011)
  53. Errais E, Duplay J, Elhabiri M, Khodja M, Ocampo R, Baltenweck-Guyot R, Darragi F, Colloids Surf. B: Biointerfaces, 403, 69 (2012)
  54. Akar ST, Uysal R, Chem. Eng. J., 162(2), 591 (2010)
  55. Hsu TC, Fuel, 87(13-14), 3040 (2008)
  56. Rusu L, Harja M, Simion AI, Suteu D, Ciobanu G, Favier L, Korean J. Chem. Eng., 31(6), 1008 (2014)
  57. Mao J, Won SW, Min J, Yun YS, Korean J. Chem. Eng., 25(5), 1060 (2008)
  58. Vijaya Kumar G, Ramalingam P, Kim MJ, Yoo CK, Kumar MD, Korean J. Chem. Eng., 27(5), 1469 (2010)
  59. Mehmood A, Bano S, Fahim A, Parveen R, Khurshid S, Korean J. Chem. Eng., 32(5), 882 (2015)
  60. Lafi R, Fradj A, Hafiane A, Hameed BH, Korean J. Chem. Eng., 31(12), 2198 (2014)