Adsorption of As(V), Cd(II) and Pb(II), in Multicomponent Aqueous Systems using Activated Carbons: Pirila et al

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...

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Bibliographic Details
Published in:Water environment research 2017-09, Vol.89 (9), p.846-855
Main Authors: Pirilä, M., Cruz, G.J.F., Ainassaari, K., Gomez, M.M., Matějová, L., Keiski, R.L.
Format: Article
Language:English
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Summary: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 ( S BET ) between 709 and 1117 m 2 /g and a pH point of zero charge (pH PZC ) between 4.4 ± 0.2 and 5 ± 0.2, while the commercial material gave an S BET value of 775 m 2 /g and a pH PZC 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 pseudo‐second order kinetic model was satisfactorily applied for most of the activated carbon samples.
ISSN:1061-4303
1554-7531
DOI:10.2175/106143017X14902968254412