AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA CHEMIA - Ediţia nr.1 din 2019 | |||||||
Articol: |
THE PRELIMINARY ADSORPTION INVESTIGATION OF URTICA DIOICA L. BIOMASS MATERIAL AS A POTENTIAL BIOSORBENT FOR HEAVY METAL IONS . Autori: VLADIMIR D. DIMITRIJEVIĆ, MAJA N. STANKOVIĆ, DRAGAN M. ĐORĐEVIĆ, IVAN M. KRSTIĆ1F, MILICA G. NIKOLIĆ, ALEKSANDAR L.J. BOJIĆ, NENAD S. KRSTIĆ. |
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Rezumat: DOI: 10.24193/subbchem.2019.1.02 pp. 19-39 Published Online: 2019-03-30 Published Print: 2019-03-30 VIEW PDF: chem.ubbcluj.ro/~studiachemia/chemia2019_1.html The removal of Cu(II) ions from aqueous solutions by adsorption onto nettle after incomplete incineration (IIN) has been studied in batch mode. The experimental isotherm results have been fitted using Langmuir, Freundlich, Temkin and Dubinin-Radushkevich equations. A comparison of kinetic models applied to the adsorption of Cu(II) ions on the adsorbent was evaluated for the pseudo-first order, the pseudo-second order and Elovich kinetic models. The pseudo-second order kinetic model was found to correlate the experimental data well. To evaluate competitive adsorption the batch experiments were carried out among the Cu(II), Pb(II) and Cd(II). The affinity order for the ternary system was Pb(II) > Cu(II) > Cd(II). FTIR and SEM analysis indicated that IIN could be used as an efficient biosorbent whose chemical structure and morphology is not altered during adsorption process. Keywords: biosorption, heavy metals, kinetic study, thermodynamic study, Urtica dioica L. |
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