Magnetic Hydrogel Beads as a Reusable Adsorbent for Highly Efficient and Rapid Removal of Aluminum: Characterization, Response Surface Methodology Optimization, and Evaluation of Isotherms, Kinetics, and Thermodynamic Studies

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dc.authorscopusid54383365200
dc.authorscopusid56305170300
dc.contributor.authorİlktaç, Raif
dc.contributor.authorBayır, Ece
dc.date.accessioned2024-08-25T18:51:35Z
dc.date.available2024-08-25T18:51:35Z
dc.date.issued2023
dc.departmentEge Üniversitesien_US
dc.description.abstractBiopolymers such as alginate and gelatin have attracted much attention because of their exceptional adsorption properties and biocompatibility. The magnetic hydrogel beads produced and used in this study had a core structure composed of magnetite nanoparticles and gelatin and a shell structure composed of alginate. The combination of the metal-ion binding ability of alginate and the mechanical strength of gelatin in magnetic hydrogel beads presents a new approach for the removal of metal from water sources. The beads were designed for aluminum removal and fully characterized using various methods, including Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy-energy-dispersive X-ray spectroscopy, vibrating sample magnetometry, microcomputed tomography, and dynamic mechanical analysis. Statistical experimental designs were employed to optimize the parameters of the adsorption and recovery processes. Plackett-Burman Design, Box-Behnken Design, and Central Composite Design were used for identifying the significant factors and optimizing the parameters of the adsorption and recovery processes, respectively. The optimum parameters determined for adsorption are as follows: pH: 4, contact time: 30 min, adsorbent amount: 600 mg; recovery time: reagent 1 M HNO3; and contact time: 40 min. The adsorption process was described by using the Langmuir isotherm model. It reveals a homogeneous bead surface and monolayer adsorption with an adsorption capacity of 5.25 mg g(-1). Limit of detection and limit of quantification values were calculated as 4.3 and 14 mu g L-1, respectively. The adsorption process was described by a pseudo-second-order kinetic model, which assumes that chemisorption is the rate-controlling mechanism. Thermodynamic studies indicate that adsorption is spontaneous and endothermic. The adsorbent was reusable for 10 successive adsorption-desorption cycles with a quantitative adsorption of 98.2% +/- 0.3% and a recovery of 99.4% +/- 2.6%. The minimum adsorbent dose was determined as 30 g L-1 to achieve quantitative adsorption of aluminum. The effects of the inorganic ions were also investigated. The proposed method was applied to tap water and carboy water samples, and the results indicate that magnetic hydrogel beads can be an effective and reusable bioadsorbent for the detection and removal of aluminum in water samples. The recovery values obtained by using the developed method were quantitative and consistent with the results obtained from the inductively coupled plasma optical emission spectrometer.en_US
dc.description.sponsorshipEge University Scientific Research Projects Council [2022-FM-GAP23760]en_US
dc.description.sponsorshipThis study was supported by the Ege University Scientific Research Projects Council (grant number 2022-FM-GAP23760).en_US
dc.identifier.doi10.1021/acsomega.3c04984
dc.identifier.endpage42456en_US
dc.identifier.issn2470-1343
dc.identifier.issue45en_US
dc.identifier.pmid38024693en_US
dc.identifier.scopus2-s2.0-85178375194en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage42440en_US
dc.identifier.urihttps://doi.org/10.1021/acsomega.3c04984
dc.identifier.urihttps://hdl.handle.net/11454/102612
dc.identifier.volume8en_US
dc.identifier.wosWOS:001105041600001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherAmer Chemical Socen_US
dc.relation.ispartofAcs Omegaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240825_Gen_US
dc.subjectMechanical-Propertiesen_US
dc.subjectMethylene-Blueen_US
dc.subjectStatistical Optimizationen_US
dc.subjectAdsorption Performanceen_US
dc.subjectWaste-Wateren_US
dc.subjectMetal-Ionsen_US
dc.subjectAlginateen_US
dc.subjectNanoparticlesen_US
dc.subjectParametersen_US
dc.subjectCompositeen_US
dc.titleMagnetic Hydrogel Beads as a Reusable Adsorbent for Highly Efficient and Rapid Removal of Aluminum: Characterization, Response Surface Methodology Optimization, and Evaluation of Isotherms, Kinetics, and Thermodynamic Studiesen_US
dc.typeArticleen_US

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