Hydrolyzed starch graft poly (acrylic acid) and
starch graft poly(acrylonitrile) copolymers were used as a
sorbents for the removal of Pb(II) from aqueous solution in
batch process. The sorbents were characterized by scanning
electron microscopy, Fourier transform infrared spectroscopy
and thermogravimetric analysis. The effect of contact
time, initial concentration and temperature were assessed to
optimize the conditions for maximum sorption of the metal
ions. The experimental data were analyzed by Langmuir,
Freundlich, Temkin, Dubinin Radushkevich and Sips isotherm
models. The Freundlich and the Sips isotherms confirmed
the applicability of the models. The sorption capacity
of the sorbent was found to be 118.61 mg/g for starch
graft poly (acrylic) acid and 115.83 mg/g for starch graft
poly (acrylonitrile). The Sorption kinetics was assessed by
Lagergren pseudo first order, pseudo second order, Elovich
equation, Intraparticle diffusion and the liquid film diffusion
models. The experimental data fitted very well with
the Elovich equation and the Intraparticle kinetic models.
The thermodynamic analysis showed that the sorption was
a spontaneous and endothermic process. The results indicated
that starch graft copolymers can be used as an effective
sorbents for Pb (II) removal from aqueous media.
EKEBAFE, L., Ekebafe1, L & David, 2 (2019). Equilibrium, Kinetic and Thermodynamic Studies Of Lead (II) Sorption on Hydrolyzed Starch Graft Copolymers. Afribary. Retrieved from https://afribary.com/works/ekebafe-article-2017
EKEBAFE, LAWRENCE, et. al. "Equilibrium, Kinetic and Thermodynamic Studies Of Lead (II) Sorption on Hydrolyzed Starch Graft Copolymers" Afribary. Afribary, 20 Jun. 2019, https://afribary.com/works/ekebafe-article-2017. Accessed 25 Nov. 2024.
EKEBAFE, LAWRENCE, Lawrence Ekebafe1 and 2 David . "Equilibrium, Kinetic and Thermodynamic Studies Of Lead (II) Sorption on Hydrolyzed Starch Graft Copolymers". Afribary, Afribary, 20 Jun. 2019. Web. 25 Nov. 2024. < https://afribary.com/works/ekebafe-article-2017 >.
EKEBAFE, LAWRENCE, Lawrence Ekebafe1 and 2 David . "Equilibrium, Kinetic and Thermodynamic Studies Of Lead (II) Sorption on Hydrolyzed Starch Graft Copolymers" Afribary (2019). Accessed November 25, 2024. https://afribary.com/works/ekebafe-article-2017