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July-September, 2020

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Adsorption Of Heavy Metals From Groundwater Using Titanate Nanoparticles Doped With Cross-Linked Polyvinyl Alcohol. Bahr El-Baqar Drain Region, El- Husinia, East Delta-Egypt

Ahmed M. Desouky, Mohamed E.A. Ali and Ehab Zaghlool

ABSTRACT: A composite of polyvinyl alcohol (PVA) and titanate nanoparticles (TNTs) was cross-linked with epichlorohydrin (EP) following the inverse-suspension polymerization method. Controlling the ratio of EP:PVA as well as the crosslinking time produces spherical beads, which characterized by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The factors affecting the maximum adsorption capacity of PVA/ TNTs against ferrous ion were investigated. The kinetic of the adsorption process were better fitted by the pseudo-second-order model than pseudo-first-order model. The equilibrium adsorption data were analyzed with isotherm models (Langmuir model, Freundlich model). The study showed that PVA/TNTs has high potential for removing iron ions from polluted water. In the present study, the removal of Fe+2 from aqueous solution by our resin was investigated. synthesized resin were investigated by SEM and IR. Initial pH also affected the removal process and the optimum initial pH was 5. The kinetic data were better described by the pseudo-secondorder model than by the pseudo-first-order model. The equilibrium adsorption data were analyzed with two isotherm models (Langmuir model, Freundlich model).

[ FULL TEXT PDF 148-158 ] DOI: 10.36632/ije/2020.9.3.9

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