Adsorption Behavior of Heavy Metal Ions (Cr3+, Pb2+ and Cu2+) Into Magnetite-Graphite Oxide-Diatomite
Keywords:
Adsorption, magnetite, isotherm models, graphite oxide, diatomiteAbstract
In this recent work, magnetite-graphite oxide diatomite (Mag-GO-diatomite) composite was synthesized using a facile method. GO diatomite, with and without Magnetite, was used for the adsorption of Cu2+, Pb2+ andCr3+. Langmuir and Freund lich adsorption sot herm models were tested to validate which of these two fits the empirical data. Results showed that the adsorption of Cr3+and Cu2+ were best described by Langmuir isotherm and Pb2+ was well fitted with the Freund lich isotherm. From the isotherm data, adsorption of Cr3+ into GO-diatomite showed the highest adsorption capacity while Pb2+revealed to have the largest adsorption for Mag-GO-diatomite.
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