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A Model for pH Dependent Equilibrium of Heavy Metal Biosorption
School of Environmental Engineering, Griffith University, Nathan Campus, Nathan, Australia
Korean Journal of Chemical Engineering, November 1999, 16(6), 753-757(5), 10.1007/BF02698347
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Abstract
Biosorption of heavy metals can be an effective process for the removal and recovery of heavy metal ions from aqueous solutions. The biomass of marine macro algae has been reported to have high uptake capacities for a number of heavy metal ions and the uptake capacities are strongly influenced by the value of the solution pH. In this paper, a modified Langmuir model was proposed for describing the pH dependent biosorption equilibrium and validated with isotherm data obtained from batch experiments and from the literature. The model assumes that the functional groups for heavy metal interactions are weakly acidic and the uptake capacities of the biomass are affected through the association and dissociation equilibrium between two apparent ionic forms. The model equations fitted the experimental data well, which supports the biosorption mechanism proposed.
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Matheickal JT, Yu Q, Feltham J, Environ. Technol., 18, 25 (1997)
Mattuschka B, Straube G, J. Chem. Technol. Biotechnol., 58, 57 (1993)
Ozer D, Aksu Z, Kutsal T, Calglar A, Environ. Technol., 15, 439 (1994)
Sag Y, Kustal T, Chem. Eng. J. Biochem. Eng. J., 60, 181 (1995)
Schiewer J, Volesky B, Environ. Sci. Technol., 31, 2478 (1997)
Schiewer J, Volesky B, Environ. Sci. Technol., 29, 3049 (1995)
Tsezos M, Volesky B, Biotechnol. Bioeng., 24, 385 (1982)
Volesky B, Holan ZR, Biotechnol. Prog., 11(3), 235 (1995)
Volesky B, Prasetyo I, Biotechnol. Bioeng., 43(11), 1010 (1994)
Volesky B, "Biosorption of Heavy Metals," CRC Press, Boca Ratton, U.S.A. (1990)
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Zhou JL, Kiff RJ, J. Chem. Technol. Biotechnol., 42, 317 (1991)
Chong KH, Volesky B, Biotechnol. Bioeng., 47(4), 451 (1995)
Cowan CE, Zacharn JM, Resch CT, Environ. Sci. Technol., 25, 437 (1991)
Crist RH, Martin JR, Carr D, Watson JR, Clarke HJ, Environ. Sci. Technol., 26, 1859 (1994)
Fourest E, Roux J, Appl. Microbiol. Biotechnol., 37, 399 (1992)
Fourest E, Volesky B, Environ. Sci. Technol., 30, 277 (1996)
Fourest E, Canal C, Roux JC, FEMS Microbiol., 14, 325 (1994)
Groffman A, Peterson S, Brookins D, Water Environ. Technol., 5, 54 (1992)
Guibal E, Roulph C, Cloirec PL, Water Res., 26, 1139 (1992)
Harris PO, Ramelov GS, Environ. Sci. Technol., 24, 220 (1990)
Higgins TE, Sater VE, Eng. Prog., 3, 12 (1984)
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Kuyucak N, Volesky B, Biotechnol. Lett., 10, 137 (1988)
Matheickal JT, Yu Q, Dev. Chem. Eng. Min. Proc. J., 5(1-2), 101 (1997)
Matheickal JT, Yu Q, Water Sci. Technol., 34(9), 1 (1996)
Matheickal JT, "Biosorption of Heavy Metals from Wastewater Using Macro Algae Durvillaea Potatorum and Ecklonia Radiata," Ph.D. Thesis, Griffith University, Australia (1998)
Matheickal JT, Iyengar L, Venkobachar C, Wat. Pol. Res. J. Canada., 26, 187 (1991)
Matheickal JT, Yu Q, Feltham J, Environ. Technol., 18, 25 (1997)
Mattuschka B, Straube G, J. Chem. Technol. Biotechnol., 58, 57 (1993)
Ozer D, Aksu Z, Kutsal T, Calglar A, Environ. Technol., 15, 439 (1994)
Sag Y, Kustal T, Chem. Eng. J. Biochem. Eng. J., 60, 181 (1995)
Schiewer J, Volesky B, Environ. Sci. Technol., 31, 2478 (1997)
Schiewer J, Volesky B, Environ. Sci. Technol., 29, 3049 (1995)
Tsezos M, Volesky B, Biotechnol. Bioeng., 24, 385 (1982)
Volesky B, Holan ZR, Biotechnol. Prog., 11(3), 235 (1995)
Volesky B, Prasetyo I, Biotechnol. Bioeng., 43(11), 1010 (1994)
Volesky B, "Biosorption of Heavy Metals," CRC Press, Boca Ratton, U.S.A. (1990)
Volesky B, May H, Holan ZR, Biotechnol. Bioeng., 41, 826 (1993)
Wilms W, Vanhaute A, Vandijk J, Scholler M, "Recovery of Nickel by Crystallization of Nickel Carbonate in Fluidized-bed Reactor," In: Proc. 2nd IAWPRC Asian Conf. Wat. Pol. Cont., Pergamon Press, Oxford, 449 (1988)
Zhou JL, Kiff RJ, J. Chem. Technol. Biotechnol., 42, 317 (1991)
