Adsorption of nickel on husk of Lathyrus sativus: Behavior and binding mechanism

Tipo de material: Texto

TextoSeries ; Colloids and surface B: Biointerfaces, 57(2), p.135-142, 2007Trabajos contenidos:

Panda, G.C
Dasa, S.K
Bandopadhyay, T.S
Guhaa, A.K

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Resumen: Husk of Lathyrus sativus (HLS)has been found to be a good sorbent for the removal of nickel(II)from its aqueous solution. The adsorption process depends on pH of the solution with an optimum at 5.0, and follows Langmuir isotherm model (correlation coefficient 0.998). Initial adsorption rate is very fast and reaches equilibrium following pseudo-second order kinetics within 60 min. Amino, carboxyl, hydroxyl and phosphate groups of the biomass are involved in chemical interaction with nickel ions as revealed from SEM-EDX and FTIR studies. Chemical modifications of the functional groups of the biosorbent show that amino groups contribute largely (¡«57

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Husk of Lathyrus sativus (HLS)has been found to be a good sorbent for the removal of nickel(II)from its aqueous solution. The adsorption process depends on pH of the solution with an optimum at 5.0, and follows Langmuir isotherm model (correlation coefficient 0.998). Initial adsorption rate is very fast and reaches equilibrium following pseudo-second order kinetics within 60 min. Amino, carboxyl, hydroxyl and phosphate groups of the biomass are involved in chemical interaction with nickel ions as revealed from SEM-EDX and FTIR studies. Chemical modifications of the functional groups of the biosorbent show that amino groups contribute largely (¡«57

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