Study of the mechanism of nitrophenols sorption on expanded perlite - Equilibrium and kinetics modelling

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creativework.keywordsAdsorption, Equilibrium, Expanded perlite, Kinetics modelling, Nitrophenols
creativework.publisherMacedonian Journal of Chemistry and Chemical EngineeringArhimedova 5Institute of Chemistry, Skopjeen
dc.contributor.authorYaneva Z.
dc.contributor.authorKoumanova B.
dc.contributor.authorGeorgieva N.
dc.date.accessioned2024-07-10T14:27:03Z
dc.date.accessioned2024-07-10T14:47:58Z
dc.date.available2024-07-10T14:27:03Z
dc.date.available2024-07-10T14:47:58Z
dc.date.issued2012-01-01
dc.description.abstractThe adsorption behavior of 2-nitrophenol (2-NP) and 2,4-dinitrophenol (2,4-DNP) on expanded perlite (EP) at equilibrium and kinetic conditions was investigated. The experimental equilibrium data were interpreted by Langmuir, Freundlich, Redlich-Peterson, Temkin and the multilayer isotherm models. Both the Temkin and the multilayer models gave the most satisfactory representation of the experimental data for 2-NP sorption on EP covering the whole concentration range, presuming high initial sorption rate, presence of adsorbent-adsorbate chemical interactions and multilayer adsorption, as the basic characteristics featuring the equilibrium behavior of the system studied. The experimental kinetic results were analyzed by the pseudo-first, pseudo-second order models, Bangham's model, intra-particle diffusion model, and Elovich kinetic equation. The values of the calculated rate, mass transfer parameters and correlation coefficients proved that chemisorptions/intraparticle diffusion could be outlined as the basic rate controlling mechanisms during 2-NP/2,4-DNP sorption on expanded perlite. Uptake of nitrophenols increased in the order 2-NP < 2,4-DNP.
dc.identifier.doi10.20450/mjcce.2012.61
dc.identifier.issn1857-5625
dc.identifier.issn1857-5552
dc.identifier.scopusSCOPUS_ID:84864535599en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/250
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84864535599&origin=inward
dc.titleStudy of the mechanism of nitrophenols sorption on expanded perlite - Equilibrium and kinetics modelling
dc.typeArticle
oaire.citation.issue1
oaire.citation.volume31
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