Acid Activation of Groundnut Husk for Copper Adsorption: Kinetics and Equilibrium Studies

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dc.contributor.authorOlukanni, Olumide
dc.date.accessioned2022-05-20T10:00:28Z
dc.date.available2022-05-20T10:00:28Z
dc.date.issued2017-08
dc.descriptionAcid activation of groundnut husk for copper adsorptionen_US
dc.description.abstractIn this study, the use of cheap unmodified and acid-modified agricultural waste primed from groundnut husk as adsorbents for the removal of Cu(II) ions from aqueous solution were examined in a batch process under different experimental conditions. Fourier transform infrared characterization of the adsorbent before and after the adsorption process revealed the likely involvement of various functional groups such as –COOH, –C=O, –NH2 and –OH− groups. Structural and morphological changes of the biomass were equally observed by X-ray diffraction and scanning electron microscopy analysis before and after adsorption of copper ions. Optimum experimental conditions were obtained to be the initial metal concentration of 50 mg L−1, contact time of 70 min, biomass dosage of 0.03 g and hydrogen ion concentration of 5.0. The kinetic studies showed that the sorption pattern of both biomasses followed pseudo-second-order model, while the isotherms studies revealed that the adsorption data were well governed by Freundlich adsorption isotherm. The monolayer adsorption capacity for unmodified groundnut husk was found to be 14.525 and 20.146 mg g−1 for acid-modified groundnut husk as computed from the Langmuir model equation. It can thus be concluded that waste groundnut husk can be used as a low cost and environmentally friendly adsorbent for Cu(II) ions removal from aqueous solution.en_US
dc.identifier.citationDesalination and Water Treatment 86 (2017) 240–251en_US
dc.identifier.issn1944-3994/1944-3986
dc.identifier.urihttp://dspace.run.edu.ng:8080/jspui/handle/123456789/3155
dc.language.isoenen_US
dc.publisherDesalination Publications.en_US
dc.subjectAdsorptionen_US
dc.subjectCopperen_US
dc.subjectEquilibriumen_US
dc.subjectGroundnut Husken_US
dc.subjectKineticsen_US
dc.titleAcid Activation of Groundnut Husk for Copper Adsorption: Kinetics and Equilibrium Studiesen_US
dc.typeArticleen_US
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