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Papers by Sola Babarinde

International Journal of Biological Macromolecules, 2020

DESALINATION AND WATER TREATMENT, 2022

In this study, Cassava (Manihot esculenta) leaf biomass has been investigated for its potential i... more In this study, Cassava (Manihot esculenta) leaf biomass has been investigated for its potential in the uptake of Cd(II), Pd(II), and Zn(II) from solutions. The FTIR spectra characteristics of Manihot esculenta leaf revealed the presence of ionizable groups that could participate in the binding of metal ions in solution. The biosorption of each of the ions was found to be dependent on the physicochemical parameters such as solution pH, contact time, initial metal ion concentrations, biosorbent dose, and temperature. The biosorption kinetics follows a pseudo-second- order kinetic model with biosorption rate of the order Pb(II)>Cd(II)>Zn(II). The biosorption capacity was found to be of the order Pb(II)> Zn(II)>Cd(II). Equilibrium isotherm studies showed that the biosorption followed the Freundlich isotherm model, which implies a heterogeneous sorption phenomenon. Thermodynamic parameters such as changes in free energy, enthalpy, and entropy have been calculated. The negativ...

The equilibrium, kinetics, and thermodynamics of the biosorption of Pb(II), Cd(II) and Zn(II) ont... more The equilibrium, kinetics, and thermodynamics of the biosorption of Pb(II), Cd(II) and Zn(II) onto groundnut (Arachis hypogaea) shell were investigated under various physicochemical parameters. Optimisation studies were carried out using batch biosorption studies. The extent of the metal ion biosorption increased with increase in solution pH, initial metal ion concentration, dosage of biosorbent and contact time but decreased with the temperature of the system. The biosorption of each of the metal ions was found to be pH-dependent. Kinetic study showed that the metal ions biosorption process followed the pseudo-second-order kinetic model. The sorption of each metal ion was analysed with Freundlich and Langmuir isotherm models, in each case, the equilibrium data were better represented by Freundlich isotherm model. Thermodynamically, parameters such as standard Gibbs free energy (ΔG˚), standard enthalpy (ΔH˚), standard entropy (ΔS˚) and the activation energy (A) were calculated. The ...

Desalination and Water Treatment, 2012

A comparative study for the biosorption of Pb(II), Cd(II) and Zn(II) using Lemon grass (Cymbopogo... more A comparative study for the biosorption of Pb(II), Cd(II) and Zn(II) using Lemon grass (Cymbopogon citratus) was investigated under various physicochemical parameters. Optimisation studies were carried out using batch biosorption studies. The biosorption of each of the metal ions was found to be pH-dependent. Kinetic study showed that each biosorption process followed the pseudo-second-order kinetic model. The sorption of each metal ion was analysed with Freundlich, Langmuir, Temkin and Dubinin-Radushkevich (D-R) isotherm models, in each case, the equilibrium data were best represented by Freundlich isotherm model. Thermodynamic parameters such as standard Gibbs free energy (ΔG˚), standard enthalpy (ΔH˚), standard entropy (ΔS˚) and the activation energy (A) were calculated. The biosorption of each metal ion was spontaneous and the order of spontaneity of the biosorption process being Zn(II) > Cd(II) > Pb(II). Similarly, the change in entropy shows that the order of disorder is...