title: Adsorption Processes of Lead Ions on the Mixture Surface of Bentonite and Bottom Sediments.
abstract: The adsorption of contaminants plays an important role in the process of their elimination from a polluted environment. This work describes the issue of loading environment with lead Pb(II) and the resulting negative impact it has on plants and living organisms. It also focuses on bentonite as a natural adsorbent and on the adsorption process of Pb(II) ions on the mixture of bentonite and bottom sediment from the water reservoir in Kolíňany (SR). The equilibrium and kinetic experimental data were evaluated using Langmuir isotherm kinetic pseudo-first and pseudo-second-order rate equations the intraparticle and surface diffusion models. Langmuir isotherm model was successfully used to characterize the lead ions adsorption equilibrium on the mixture of bentonite and bottom sediment. The pseudo second-order model, the intraparticle and surface (film) diffusion models could be simultaneously fitted the experimental kinetic data.
authors.affiliation: Horiculture and Landscape Engineering Faculty, Department of Vegetables Production, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia. alzbeta.hegedusova@uniag.sk.
authors.forename: Alžbeta
authors.identifier: http://orcid.org/0000-0001-6994-1077
authors.initials: A
authors.lastname: Hegedűsová
authors.affiliation: Department of Chemical Analysis, Regional Public Health Authority in Nitra, Štefánikova 58, 949 01, Nitra, Slovakia.
authors.forename: Ondrej
authors.initials: O
authors.lastname: Hegedűs
authors.affiliation: Department of Chemistry, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia.
authors.forename: Tomáš
authors.initials: T
authors.lastname: Tóth
authors.affiliation: Department of Chemistry, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia.
authors.forename: Alena
authors.initials: A
authors.lastname: Vollmannová
authors.affiliation: Horiculture and Landscape Engineering Faculty, Department of Vegetables Production, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia.
authors.forename: Alena
authors.initials: A
authors.lastname: Andrejiová
authors.affiliation: Horiculture and Landscape Engineering Faculty, Department of Vegetables Production, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia.
authors.forename: Miroslav
authors.initials: M
authors.lastname: Šlosár
authors.affiliation: Horiculture and Landscape Engineering Faculty, Department of Vegetables Production, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76, Nitra, Slovakia.
authors.forename: Ivana
authors.initials: I
authors.lastname: Mezeyová
authors.affiliation: Analytical Chemistry and Geoanalytical Research Group, Szentágothai Research Center, University of Pécs, Ifjúság u. 6, Pécs, 7624, Hungary.
authors.forename: Tímea
authors.initials: T
authors.lastname: Pernyeszi
mesh_terms: D000327:Adsorption; D001546:Bentonite / Q000737:chemistry*; D004058:Diffusion; D019015:Geologic Sediments / Q000737:chemistry*; D007477:Ions; D007700:Kinetics; D007854:Lead / Q000737:chemistry*; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification
chemical_list: D007477:Ions; D014874:Water Pollutants, Chemical; D001546:Bentonite; D007854:Lead
keywords: Bentonite; Bottom sediment; Environment; Lead adsorption