Sorption properties of hydrolyzed starch graft poly (acrylic acid) and
starch graft poly(acrylonitrile) copolymers as sorbents for the removal of
Cd (II) and Cu(II) ions from aqueous solution in batch process were
assessed. The copolymers were prepared using methods as reported in
literature and were characterized in terms of morphology using scanning
electron microscopy, confirmation of sorbents produced using Fourier
transform infrared spectroscopy and thermal stability using
thermogravimetric analysis. The effect of contact time, initial concentration
and temperature were assessed to optimize the conditions for the sorption
of the metal ions. The experimental data were subjected to analysis using
the models; 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 copolymers was
found to be 118.61mg/g for starch graft poly (acrylic acid) and 115.83mg/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 effective sorbents for Cd (II)
and Cu (II) removal from aqueous media.
EKEBAFE, L., , 1 , , L & and, 2 (2019). SORPTION PROPERTIES OF HYDROLYZED STARCH GRAFT COPOLYMERS IN THE REMOVAL OF CADMIUM (II) AND COPPER (II) IONS FROM AQUEOUS MEDIA. Afribary. Retrieved from https://afribary.com/works/ekebafe-nrjees-2018
EKEBAFE, LAWRENCE, et. al. "SORPTION PROPERTIES OF HYDROLYZED STARCH GRAFT COPOLYMERS IN THE REMOVAL OF CADMIUM (II) AND COPPER (II) IONS FROM AQUEOUS MEDIA" Afribary. Afribary, 20 Jun. 2019, https://afribary.com/works/ekebafe-nrjees-2018. Accessed 25 Nov. 2024.
EKEBAFE, LAWRENCE, 1Ekebafe , L.O. and 2Ogbeifun And . "SORPTION PROPERTIES OF HYDROLYZED STARCH GRAFT COPOLYMERS IN THE REMOVAL OF CADMIUM (II) AND COPPER (II) IONS FROM AQUEOUS MEDIA". Afribary, Afribary, 20 Jun. 2019. Web. 25 Nov. 2024. < https://afribary.com/works/ekebafe-nrjees-2018 >.
EKEBAFE, LAWRENCE, 1Ekebafe , L.O. and 2Ogbeifun And . "SORPTION PROPERTIES OF HYDROLYZED STARCH GRAFT COPOLYMERS IN THE REMOVAL OF CADMIUM (II) AND COPPER (II) IONS FROM AQUEOUS MEDIA" Afribary (2019). Accessed November 25, 2024. https://afribary.com/works/ekebafe-nrjees-2018