Sustainable approach to dye adsorption: hemp-based activated carbon as an effective adsorbent

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dc.contributor.authorToptas, Yeliz
dc.contributor.authorYavuz, Bahar
dc.contributor.authorKorkmaz, Aydan Aksogan
dc.contributor.authorOnal, Yunus
dc.date.accessioned2024-08-04T20:55:58Z
dc.date.available2024-08-04T20:55:58Z
dc.date.issued2024
dc.departmentİnönü Üniversitesien_US
dc.description.abstractIn industry, the use of dyes that threaten human health is increasing day by day. RB 19 (Reactive Blue 19, Remazol brilliant blue R), one of the most common dyes that adversely affect natural life, is the subject of this article. In this article, the waste parts of the hemp plant (root, stem and other) were evaluated for use in scientific studies. Hemp wastes were carbonised at 500 degrees C at a heating rate of 10 degrees C/min for 1 hour in the N2 atmosphere. Chemical activation was then carried out with 1:4 potassium hydroxide (KOH) at 800 degrees C under the same conditions. Activated carbon (AC) used as an adsorbent was characterised by elemental analysis (73.3% C, 0.3% H, 0.46% N, 0.02% S and 25.92% O), XRD, SEM, BET and FT-IR analysis. Activated carbon (AC) with 850 mu m size, 1858.70 m2/g surface area was obtained by chemical activation of carbonised hemp waste with KOH. SEM images showed that the activated carbon is structurally similar to a honeycomb. Kinetic parameters were analysed with six different equations (Intra Particle Diffusion, Pseudo First, Pseudo Second, Elovich, Avrami, Bangham) and adsorption mechanism with eight different equations (Henry, Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Koble-Corrigan, Flory-Huggins, Harkin-Jura). According to the calculated diffusion coefficient (19.299), it is concluded that diffusion is externally controlled. The Intra-Particle Diffusion constant (75.34) indicated that the outer adsorption layer of activated carbon was thick. When the correlation coefficients of the equations were examined according to the kinetic analysis results, the highest correlation coefficient was observed in the Pseudo-First kinetic model for all temperatures. However, it was determined that it also fits the Bangham and Avrami models. Since Bangham and Avrami models have high regression coefficients (0.96-0.99), it can be said that adsorption also fits these models. Also, the negative Gibbs Free Energy values indicate that adsorption can occur spontaneously and is thermodynamically favourable.en_US
dc.identifier.doi10.1080/03067319.2024.2346192
dc.identifier.issn0306-7319
dc.identifier.issn1029-0397
dc.identifier.scopus2-s2.0-85192396545en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.urihttps://doi.org/10.1080/03067319.2024.2346192
dc.identifier.urihttps://hdl.handle.net/11616/101972
dc.identifier.wosWOS:001215363400001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.ispartofInternational Journal of Environmental Analytical Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectActivated carbonen_US
dc.subjectadsorptionen_US
dc.subjecthempen_US
dc.subjectkineticen_US
dc.subjectReactive Blue 19en_US
dc.titleSustainable approach to dye adsorption: hemp-based activated carbon as an effective adsorbenten_US
dc.typeArticleen_US

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