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dc.contributor.authorKimosop, SellyJemutai-
dc.contributor.authorOkello, Veronica A.
dc.contributor.authorShikuku, Victor O.
dc.contributor.authorOrata, Francis
dc.contributor.authorGetenga, Zachary M.
dc.date.accessioned2022-09-19T12:02:56Z
dc.date.available2022-09-19T12:02:56Z
dc.date.issued2022-06-17
dc.identifier.urihttps://doi.org/10.1016/j.clema.2022.100104
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S2772397622000648?via%3Dihub
dc.identifier.urihttp://ir-library.mmust.ac.ke:8080/xmlui/handle/123456789/2102
dc.description.abstractIn this work, akaganeite (β-FeO(OH)) impregnated maize cob biochar (Fe-MCB) was prepared by direct hydrolysis, and its adsorptive potential was tested against aqueous solutions of carbamazepine (CBZ), an emerging contaminant. The adsorbent was characterized by standard methods, namely XRD, SEM-EDX, FT-IR, BET surface area analysis, and VSM. Fe-MCB exhibited mesoporous textural structure with paramagnetic behavior at room temperature. The equilibrium data were modeled using the Langmuir, Freundlich, Fowler-Guggenheim and Sips isotherm models. The adsorption data were best described by Fowler-Guggenheim with an estimated maximum adsorption capacity of 81.80 mg g−1. The adsorption rate was described by the pseudo-first-order (PFO) model. The thermodynamic functions, namely enthalpy (ΔH = -6.88 kJ mol−1), negative Gibbs free energy (ΔG) values, entropy (ΔS = 26.33 J mol−1), indicated that the adsorption was exothermic, spontaneous, with the increased disorder at the solid-liquid interphase. The adsorption mechanism is thought to entail dispersive interactions. Modified maize cob biochar is a potentially techno-economic sorbent for CBZ adsorption.en_US
dc.language.isoenen_US
dc.publisherCleaner Materials journal homepage: www.journals.elsevier.com/cleaner-materials https://doi.org/10.1016/j.clema.2022.100104 Received 16 March 2022; Received in revised form 6 June 2022; Accepted 12 June 2022en_US
dc.subjectSynthesis, mesoporous, akageneite, functionalized, maize cob, biochar, adsorptive, abatement,carbamazepine, Kinetics, isotherms, thermodynamicsen_US
dc.titleSynthesis of mesoporous akaganeite functionalized maize cob biochar for adsorptive abatement of carbamazepine: Kinetics, isotherms, and thermodynamicsen_US
dc.typeArticleen_US


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