title: Influence of hydrogen cations on kinetics and equilibria of heavy-metal sorption by algae-sorption of copper cations by the algaPalmaria palmata(Linnaeus) Weber & Mohr (Rhodophyta).
abstract: The influence of hydrogen cations on kinetics and equilibria of sorption of copper cations by the marine algaPalmaria palmata(Linnaeus) Weber & Mohr was studied under static conditions. The competitive effect of the H+cations is described, which influenced the uncertainty of evaluation of the alga sorption capacity. Under static conditions, the variation of the Cu2+/H+concentration ratio during sorption was found nonmonotonic. The Langmuir isotherm model was used to determine the sorption capacity of the alga, namely 12.4 mg g-1of dry algae mass. A similar value was determined from the kinetic parameters of the ionic exchange which is considered a pseudo-second-order chemical reaction. The consistent results indicated that the mathematical models used correctly described the equilibria and kinetics of the ionic exchange between algae and solutions.
authors.affiliation: Chair of Biotechnology and Molecular Biology, Opole University, ul. kard. B. Kominka 6, 45-032 Opole, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Kłos
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Rajfur
keywords: Algae; Copper; Ionic exchange; Sorption kinetics and equilibria; pH
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