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dc.contributor.authorProdromou, Melpomenien
dc.contributor.authorPashalidis, Ioannisen
dc.creatorProdromou, Melpomenien
dc.creatorPashalidis, Ioannisen
dc.subjectSaline water conversionen
dc.titleEuropium adsorption by non-treated and chemically modified opuntia ficus indica cactus fibres in aqueous solutions[ONLINE]en
dc.typeinfo:eu-repo/semantics/article Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied SciencesΤμήμα Χημείας / Department of Chemistry
dc.description.notes<p>ID: 1111en
dc.description.notesIn: Desalination and water treatment, Vol. 57, no. 11 (Mar. 2016), p.5079-5088.en
dc.description.notesSummary: AbstractThe sorption efficiency ofOpuntia ficus indicacactus fibres regarding the removal of trivalent europium (Eu(III)) from aqueous solutions has been investigated prior and after the chemical treatment (phosphorylation and MnO2-coating) of the biomass. The removal efficiency has been studied as a function of pH, europium concentration, mass of the adsorbent, ionic strength, temperature and contact time. Evaluation of the experimental data shows that biosorption is strongly pH-depended and that the MnO2-coated product presents the highest sorption capacity followed by the non-treated and phosphorylated material. Results have been analysed by Langmuir, Freundlich and Dubinin–Radushkevich isotherms, and the Langmuir model is more suitable to describe the process. The sorption reactions are entropy-driven, and the kinetics follows a pseudo-first order rate expression, described by Lagergren. In addition, the results show that the fibres of theOpuntia ficus indicacactus possess significantly higher sorption capacity than other biomass by-products reported in literature and that the removal of europium from contaminated waters is expected to be more effective in the case of the chemically treated biomasses.</p>en
dc.contributor.orcidPashalidis, Ioannis [0000-0002-7587-6395]

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