Sri Juari Santosa(1*), Narsito Narsito(2), Aldes Lesbani(3)

(1) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara Kotak Pos Bls. 21, Yogyakarta
(2) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara Kotak Pos Bls. 21, Yogyakarta
(3) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang
(*) Corresponding Author


This study reports the results of the elucidation of the sorption-desorption mechanism of Zn(II) and Cd(II) on chitin through the determination of capacity, energy, and rate constant of sorption as well as the investigation of their desorption properties in NaCl and Na2EDTA solutions. The chitin was isolated through deproteination followed by demineralization of crab (Portunus pelagicus Linn) shell using NaOH solutions. The sorption of both metal ions followed the Langmuir isotherm model, resulting the sorption capacities of 3.2 x 10-4 and 2.8 x 10-4 mol g-1 for Zn(II) and Cd(II), respectively, and sorption energies of 15.1 kJ mol-1 for Zn(II) and 17.9 kJ mol-1 for Cd(II). It was also observed that Zn(II) was sorbed slightly faster than Cd(II) with first order sorption rate constants of 2.82 x 10-3 min-1 for Zn(II) and 2.61 x 10-3 min-1 for Cd(II). The result of the desorption experiment showed that Cd(II) and especially Zn(II) could only be exchanged by Na(I) after desorbing those metal ions by strong chelating agent of EDTA2-. The easier desorption of Zn(II) than Cd(II) by EDTA2- must be attributed by the smaller sorption energy of Zn(II) and by harder acid property of Zn(II) than Cd(II) as EDTA2- contained hard electron donor elements.


sorption; desorption; chitin; Zn(II); Cd(II)

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[1] Atkinson, B.W., Bux, F., and Kasan, H.C., 1998, Water SA, 24, 129.

[2] Muhammad, N., Parr, J., Smith, M.D., and Wheatly, A.D., 1998, Adsorption of Heavy Metals in Slow Sand Filters, 24th WEDC Conference on Sanitation and Water for All, Islamabad, p. 346.

[3] Matsuura, T., 2001, Desalination, 34, 47.

[4] Keane, M.A., 2003, Green Chem. 5, 309.

[5] Walker, G.M., and Weatherley, L.R., 1997, Water Res. 31, 2093.

[6] Fatoki, O.S., and Fowokan, A.O.O., 2002, Water SA, 293.

[7] Thirunavukkarasu, S., Viraraghavan, T., Subramanian, K.S., 2003, Water SA 29, 161.

[8] Mellah, A., and Chegrouche, S., 1997, Water Res., 31, 621.

[9] Chegrouche, S., Mellah, A., and Telmoune, S., 1997, Water Res., 31, 1733.

[10] Ngah, W.S.W., and Musa, A., 1998, J. Appl. Polym. Sci., 69, 2305.

[11] Schmuhl, R., Krieg, H.M., and Keizer, K., 2001, Water SA, 27, 1.

[12] Jaafari, K., Elmaleh, S., Coma, J., and Benkhouja, K., 2001, Water SA, 27, 9.

[13] Gao, Y., Lee, K-H., Oshima, M., and Motomizu, S., 2000, Anal. Sci., 16, 1303.

[14] Semu, E., Singh, B.B., and Selmer, O.A.R., 1987, Water, Air and Soil Pollut., 32, 1.

[15] Mahdian, 1997, Adsorption-Desorption Study of Ni(II), Co(II), and Mn(II) on Diatomeae Earth Adsorben (in Indonesian), Master Thesis, Gadjah Mada University, Yogyakarta, Indonesia, 1997.

[16] Chiou, C.T., Kile, D.E., Rutherford, D.W., Sheng, G., Boyd, S.A., 2000, Environ. Sci. Technol., 34, 1254.

[17] Spark, K.M., Wells, J.D., and Johnson, B.B., 1997, Aus. J. Soil. Resc., 35, 89.

[18] Muzzarelli, R.A.A., 1985, Chitin, Pergamon Press, Oxford.

[19] Chui, V.W.D., Mox, K.W., Ng, C.Y., Luong, B.P., and Ma, K.K., 1996, Environ. Int. 22, 463.

[20] Lerivrey, J., Dubois, B., Decock, P., Micera, J., and Kozlowski, H., 1986, Inorg. Chim. Acta, 125, 187.

[21] Hong, N.K., Meyer, S.P., and Lee, K.S., 1989, J. Agric. Food. Chem., 37, 575.

[22] Douglas, B., Mc Daniel, D., and Alexander, J., 1994, Concepts and Models of Inorganic Chemistry, Third Edition, John Wiley & Sons, Inc., New York.

[23] Huheey, J.E., Keitler, E.A., and Keitler, R.L., 1993, Inorganic Chemistry Principles of Structure and Reactivity, Fourth Edition, Harper Collins College Publisher, New York.

[24] Santosa, S.J., Narsito, and Lesbani, A., 2003, J. Ion Exchange, 14, 89.

[25] Bowser, J.R., 1993, Inorganic Chemistry, Brooks Cole Publishing Company, Belmont, California.


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Indonesian Journal of Chemistry (ISSN 1411-9420 / 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.

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