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Adsorption of As(V), Cd(II) and Pb(II), in Multicomponent Aqueous Systems using Activated Carbons.

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    0480909 - ÚCHP 2018 RIV US eng J - Článek v odborném periodiku
    Pirilä, M. - Cruz, G.J.F. - Ainassaari, K. - Gómez, M.M. - Matějová, Lenka - Keiski, R.L.
    Adsorption of As(V), Cd(II) and Pb(II), in Multicomponent Aqueous Systems using Activated Carbons.
    Water Environment Research. Roč. 89, č. 9 (2017), s. 846-855. ISSN 1061-4303
    Grant ostatní:NUT(PE) 0722-2014; PNCST(PE) 002/PE/2012
    Institucionální podpora: RVO:67985858
    Klíčová slova: activated carbon * agro-waste material * heavy metals adsorption
    Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
    Obor OECD: Chemical process engineering
    Impakt faktor: 0.825, rok: 2017

    This paper studies the use of two activated carbon samples made of cocoa pod husk (CPH-AC) and one commercial activated carbon sample in the adsorption of As(V), Cd(II) and Pb(II) from multicomponent synthetic solutions and from the Puyango-Tumbes River water, a river located in northwest Peru. The characterization of the activated carbon samples was conducted. The CPH-AC samples exhibited a specific surface area (SBET) between 709 and 1117 m2/g and a pH point of zero charge (pHPZC) between 4.4 ± 0.2 and 5 ± 0.2, while the commercial material gave an SBET value of 775 m2/g and a pHPZC value of 7.6 ± 0.1. All the evaluated samples displayed the capacity to adsorb As(V), Cd(II) and Pb(II) from both aqueous systems. The adsorption efficiency for Pb was outstanding reaching the value of 89%. A pseudosecond order kinetic model was satisfactorily applied for most of the activated carbon samples.
    Trvalý link: http://hdl.handle.net/11104/0276567
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