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AuthorAl-Thani, N.J.
AuthorBhadra, J.
AuthorAbdulmalik, D.
AuthorAl-Qaradawi, I.
AuthorAlashraf, A.
AuthorMadi, N.K.
Available date2017-01-04T10:40:22Z
Publication Date2016
Publication NameDesalination and Water Treatment
Identifierhttp://dx.doi.org/10.1080/19443994.2016.1167128
CitationPositron annihilation study on polyaniline nanocomposite used for Pb(II) ion removal N.J. Al-Thani, J. Bhadra, D. Abdulmalik, I. Al-Qaradawi, A. Alashraf, and N.K. Madi Desalination And Water Treatment Vol. 57 , Iss. 56, 2016
ISSN1944-3994
URIhttp://hdl.handle.net/10576/5147
AbstractNanocomposites of polyaniline (PANI) with three different concentrations of micrometre-sized sawdust are prepared in aqueous media via chemical casting method at room temperature. Thereafter, the removal efficiency of the obtained composites for lead (Pb) ion from aqueous solutions is studied. The influence of sawdust concentrations on chemical structure and morphology of the composites is investigated by Fourier transform infrared spectroscopy and scanning electron microscopy. In order to investigate the removal efficiency of nanocomposites, a number of studies are performed, such as influence of pH, contact time, metal loading and nanocomposite concentrations. Our investigation suggests that the optimum conditions to obtain the highest efficiency are 5% of sawdust in nanocomposite, pH 5 and 3 min equilibrium time. A novel method of positron annihilation measurement is performed in order to study the mechanism behind adsorption of PANI and composites. Results obtained from positron annihilation are also consistent with that of adsorption experiments. Furthermore, the adsorption kinetic has been studied using the Langmuir adsorption isotherm and the Freundlich adsorption isotherm models; among the two models, Freundlich adsorption isotherm model is found to be better with respect to equilibrium aspect.
Languageen
PublisherTaylor & Francis
SubjectAdsorption
Nanofibre
Polymer composites
Heavy metal
Removal efficiency
TitlePositron annihilation study on polyaniline nanocomposite used for Pb(II) ion removal
TypeArticle
Pagination27374-27385
Issue Number56
Volume Number57
ESSN1944-3986
dc.accessType Abstract Only


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