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EQUILIBRIUM AND KINETIC STUDIES ON THE REMOVAL OF HEAVY METAL IONS WITH NATURAL LOW-COST ADSORBENTS

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dc.contributor.authorVarank, Gamze
dc.contributor.authorDemir, Ahmet
dc.contributor.authorBilgili, M. Sinan
dc.contributor.authorTop, Selin
dc.contributor.authorSekman, Elif
dc.contributor.authorYazici, Senem
dc.contributor.authorErkan, Hanife Sari
dc.contributor.institutionauthorBİLGİLİ, Mehmet Sinan
dc.date.accessioned2026-06-27T13:28:55Z
dc.date.issued2014
dc.description.abstractAdsorption isotherms and kinetics of the removal of heavy metal ions (Ni, Pb, Zn) from aqueous solutions by natural adsorbents (zeolite, bentonite, clay) were investigated in a lab-scale batch study. The effect of various parameters such as adsorbent dosage, initial concentration of heavy metal ions, temperature, and agitation time were studied to optimise the conditions. Under those optimized conditions (180 rpm agitation rate, 120 min agitation time, pH 4.0, 298 K, 100 mg/dm(3) initial adsorbate concentration), the removal percentages of heavy metal ions for natural adsorbents have been determined. The adsorption mechanisms and characteristic parameters of the process were analyzed by two and three parameter isotherm models (Langmuir, Freundlich, Temkin, Redlich-Peterson, Toth and Sips), and kinetic models (Lagergren's pseudo-first order, Ho and McKay's pseudo-second order). Adsorption thermodynamics of heavy metal ions (changes of standard enthalpy, entropy and free energy) on zeolite, bentonite and clay were also studied at 298, 318 and 338 K.en
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK - CAYDAG), Ankara, Turkey [105Y334]
dc.description.urihttps://doi.org/10.5277/epe140304
dc.identifier.doi10.5277/epe140304
dc.identifier.endpage61
dc.identifier.issn0324-8828
dc.identifier.issue3
dc.identifier.startpage43
dc.identifier.urihttps://hdl.handle.net/20.500.14981/53094
dc.identifier.volume40
dc.identifier.wos000343742000004
dc.language.isoeng
dc.publisherTECHNICAL UNIV WROCLAW
dc.relation.ispartofENVIRONMENT PROTECTION ENGINEERING
dc.subjectACTIVATED CARBON
dc.subjectADSORPTION
dc.subjectSORPTION
dc.subject2-PARAMETER
dc.subjectZINC
dc.subjectBIOSORPTION
dc.subjectISOTHERMS
dc.subjectBENTONITE
dc.subjectEQUATIONS
dc.subjectZEOLITE
dc.subjectEngineering
dc.titleEQUILIBRIUM AND KINETIC STUDIES ON THE REMOVAL OF HEAVY METAL IONS WITH NATURAL LOW-COST ADSORBENTS
dc.typeArticle
dspace.entity.typePublication
local.import.sourceWOS

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