Adsorptive Separation of Lead (Pb2+) from Aqueous Solution Using Tri-n-octylamine Supported Montmorillonite

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dc.authoridDatta, Dipaloy/0000-0002-2048-9064
dc.contributor.authorDatta, Dipaloy
dc.contributor.authorUslu, Hasan
dc.date.accessioned2025-03-26T17:35:10Z
dc.date.available2025-03-26T17:35:10Z
dc.date.issued2017
dc.departmentİstanbul Esenyurt Üniversitesi
dc.description.abstractDivalent lead present in the water stream was removed by using adsorption techniques with montmorillonite clay (Mt) modified with tri-n-octylamine (Mt-TOA). Batch adsorption data at equilibrium were determined with different initial Pb2+ ions concentration (8, 10, 12, 14, and 16 mg.L-1) in the aqueous solution at 298 K, and these results were correlated by using three different isotherm models, for instance, the Langmuir, the Freundlich, and the Temkin. The two-parameter Langmuir model was the best fit to the equilibrium data with a coefficient (R-2) greater than 0.99. The maximum capacities for monolayer adsorption of Mt and Mt-TOA were determined to be 3.37 mg.g(-1) and 33.1 mg.g(-1), respectively, as estimated from Langmuir. Also, experimental values were generated to evaluate the influence of adsorbent amount (w, 0.05-0.3 g for Mt, 0.01-0.06 g for Mt-TOA), starting Pb2+ ion concentration (C-0,8 mg.L-1 to 16 mg.L-1), pH (between 1 and 9), and contact period (t, from 10 to 110 min) on the removal effectiveness and adsorption capability of Mt and Mt-TOA adsorbents. In respect to kinetic studies, the removal efficiency of Pb2+ ion reached to a fixed value of 81.42% with Mt (0.1 g) and 80.67% by Mt-TOA (0.01 g) next 100 and 80 min, respectively. Pseudo-first order, pseudo-second order, and intraparticle diffusion models were studied to obtain the kinetic parameters of the adsorption practice. It is observed that the rate of mass transfer of Pb2+ ions was mainly governed by the intraparticle diffusion mechanism.
dc.identifier.doi10.1021/acs.jced.6b00716
dc.identifier.endpage375
dc.identifier.issn0021-9568
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85024832326
dc.identifier.scopusqualityQ2
dc.identifier.startpage370
dc.identifier.urihttps://doi.org/10.1021/acs.jced.6b00716
dc.identifier.urihttps://hdl.handle.net/20.500.14704/1082
dc.identifier.volume62
dc.identifier.wosWOS:000392035300042
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Chemical Soc
dc.relation.ispartofJournal of Chemical and Engineering Data
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250326
dc.subjectActivated Carbon; Heavy-Metals; Chromium Vi; Removal; Adsorbent; Ions; Sorption; Kinetics; Pb(Ii); Copper
dc.titleAdsorptive Separation of Lead (Pb2+) from Aqueous Solution Using Tri-n-octylamine Supported Montmorillonite
dc.typeArticle

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