Biosorption of Cu(II) and Zn(II) ions from aqueous solution by water hyacinth (Eichhornia crassipes)
by R. Gandhimathi; S.T. Ramesh; V.M. Arun; P.V. Nidheesh
International Journal of Environment and Waste Management (IJEWM), Vol. 11, No. 4, 2013

Abstract: The biosorption of Cu(II) and Zn(II) ions from aqueous solution by raw water hyacinth (RWH) and acid treated water hyacinth (TWH) was studied as a function of time, biosorbent dosage and pH. The kinetic results obeyed well the pseudo second-order model. Maximum biosorption capacities for RWH and TWH were measured as 0.49, 6.56 mg/g for Cu(II) and 2.66, 10.71 mg/g for Zn(II), respectively. FT-IR analysis indicated that carboxyl groups in water hyacinth may be involved in the mechanism of Cu(II) and Zn(II) adsorption.

Online publication date: Sat, 20-Sep-2014

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