Electroadsorption of arsenic from natural water in granular activated carbon

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Title: Electroadsorption of arsenic from natural water in granular activated carbon
Authors: Beralus, Jean-Mackson | Ruiz-Rosas, Ramiro | Cazorla-Amorós, Diego | Morallon, Emilia
Research Group/s: Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Electroadsorption | Water treatment | Heavy metals remediation | Activated carbon
Knowledge Area: Química Física | Química Inorgánica
Issue Date: 24-Nov-2014
Publisher: Frontiers Media
Citation: Frontiers in Materials. 2014, 1(28): 9 p. doi:10.3389/fmats.2014.00028
Abstract: The adsorption and electroadsorption of arsenic from a natural water has been studied in a filter-press electrochemical cell using a commercial granular activated carbon as adsorbent and Pt/Ti and graphite as electrodes. A significant reduction of the arsenic concentration is achieved when current is imposed between the electrodes, especially when the activated carbon was located in the vicinity of the anode. This enhancement can be explained in terms of the presence of electrostatic interactions between the polarized carbon surface and the arsenic ions, and changes in the distribution of most stable species of arsenic in solution due to As(III) to As(V) oxidation. In summary, electrochemical adsorption on a filter-press cell can be used for enhancement the arsenic remediation with activated carbon in the treatment of a real groundwater.
Sponsor: The authors gratefully thank the economic support from the Ministerio de Economía y Competitividad and FEDER (Projects MAT2013-42007-P and CTQ2012/31762) and Generalitat Valenciana (PROMETEO/2013/038 and PROMETEOII/2014/010). Ramiro Ruiz-Rosas also thanks MINECO for support through a “Juan de la Cierva” contract (JCI-2012-12664).
URI: http://hdl.handle.net/10045/43021
ISSN: 2296-8016
DOI: 10.3389/fmats.2014.00028
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2014 Beralus, Ruiz-Rosas, Cazorla-Amorós and Morallón. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Peer Review: si
Publisher version: http://dx.doi.org/10.3389/fmats.2014.00028
Appears in Collections:INV - MCMA - Artículos de Revistas
INV - GEPE - Artículos de Revistas

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