Effective adsorption of Congo red by eco-friendly granite-modified magnetic chitosan nanocomposite (G@Fe3O4@CS)

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dc.authoridSENTURK, ILKNUR/0000-0002-8217-2281
dc.contributor.authorSenturk, Ilknur
dc.date.accessioned2024-10-26T18:02:36Z
dc.date.available2024-10-26T18:02:36Z
dc.date.issued2023
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractCongo red (CR) is one of the most common dyes that require special attention due to its harmfulness and high persistence in the aquatic environment. This study aimed to remove carcinogenic CR from water using a Granite/Iron oxide/Chitosan (G@Fe3O4@CS) nanocomposite. The G@Fe3O4@CS nanocomposite was synthesized using the coprecipitation method. The synthesized nanocomposite was characterized using SEM, EDX, FTIR, and XRD methods. The effects of various parameters, namely solution pH, adsorbent dosage, initial concentration of CR, experiment duration, temperature, co-existing anions, and reusability of NCs, were also investigated. The highest removal for 100 mg/L CR, with a removal effectiveness of 93.78%, was recorded at 60 C-degrees. Thermodynamics, isotherms, and kinetics were investigated for adsorption mechanisms. The study demonstrated that all sorption processes were better suited to the pseudo-second-order equation (R-2 = 0.999) and the Langmuir equation (R-2 = 0.9909 with q(max) = 63.69 mg/g at 288 K). The nature of the process is spontaneous, endothermic, and characterized by increased randomness, as indicated by thermodynamic properties. Desorption studies showed that G@Fe3O4@CS can remove 86.22% of Congo red; under the same conditions, the removal rate was 76.82% and 47.62% after three and five adsorption cycles, respectively. The simple and eco-friendly manufacturing process, effective adsorption procedure, rapid magnetic separation, and all experimental results indicated that G@Fe3O4@CS could be a potential adsorbent for the adsorptive removal of wastewater containing CR dye.
dc.identifier.doi10.1007/s13399-023-04826-1
dc.identifier.issn2190-6815
dc.identifier.issn2190-6823
dc.identifier.scopus2-s2.0-85169812019
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.1007/s13399-023-04826-1
dc.identifier.urihttps://hdl.handle.net/20.500.12418/28260
dc.identifier.wosWOS:001159251000008
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofBiomass Conversion and Biorefinery
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCationic biopolymer
dc.subjectMagnetic nanoparticle
dc.subjectAdsorption mechanism
dc.subjectKinetic and isotherm modeling
dc.subjectThermodynamics
dc.titleEffective adsorption of Congo red by eco-friendly granite-modified magnetic chitosan nanocomposite (G@Fe3O4@CS)
dc.typeArticle

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