Hybrid Materials from Agro-waste and Nanoparticles: Implications on the Kinetics of the Adsorption of Inorganic Pollutants

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dc.contributor.authorOmorogie, Martins
dc.date.accessioned2022-02-02T14:15:56Z
dc.date.available2022-02-02T14:15:56Z
dc.date.issued2014-03-01
dc.descriptionThe authors acknowledge the support of The World Academy of Sciences for the advancement of science in developing countries and the Chinese Academy of Sciences (TWAS-CAS) for providing fellowship to Martins O. Omorogie at the Laboratory for Nanodevices, National Center for Nanoscience and Technology, Beijing, China where this research was carried out.en_US
dc.description.abstractThis study is a first-hand report of the immobilization of Nauclea diderrichii seed waste biomass (ND) (an agro-waste) with eco-friendly mesoporous silica (MS) and graphene oxide–MS (GO + MS) nanoparticles, producing two new hybrid materials namely: MND adsorbent for agro-waste modified with MS and GND adsorbent for agro-waste modified with GO + MS nanoparticles showed improved surface area, pore size and pore volume over those of the agro-waste. The abstractive potential of the new hybrid materials was explored for uptake of Cr(III) and Pb(II) ions. Analysis of experimental data from these new hybrid materials showed increased initial sorption rate of Cr(III) and Pb(II) ions uptake. The amounts of Cr(III) and Pb(II) ions adsorbed by MND and GND adsorbents were greater than those of ND. Modification of N. diderrichii seed waste significantly improved its rate of adsorption and diffusion coefficient for Cr(III) and Pb(II) more than its adsorption capacity. The rate of adsorption of the heavy metal ions was higher with GO + MS nanoparticles than for other adsorbents. Kinetic data were found to fit well the pseudo-second-order and the diffusion–chemisorption kinetic models suggesting that the adsorption of Cr(III) and Pb(II) onto these adsorbents is mainly through chemisorption mechanism. Analysis of kinetic data with the homogeneous particle diffusion kinetic model suggests that particle diffusion (diffusion of ions through the adsorbent) is the rate-limiting step for the adsorption process.en_US
dc.identifier.citation22en_US
dc.identifier.otherhttp://dx.doi.org/10.1080/09593330.2013.839747
dc.identifier.urihttp://dspace.run.edu.ng:8080/jspui/handle/123456789/979
dc.language.isoenen_US
dc.publisherTaylor and Francisen_US
dc.subjectAdsorptionen_US
dc.subjectGraphene Oxideen_US
dc.subjectNanoparticlesen_US
dc.subjectKinetic Modelsen_US
dc.subjectHybrid materialsen_US
dc.titleHybrid Materials from Agro-waste and Nanoparticles: Implications on the Kinetics of the Adsorption of Inorganic Pollutantsen_US
dc.typeArticleen_US
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Environmental Technology, 2014, 35(5): 611–619
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