Electrochemical regeneration of spent activated carbon from drinking water treatment plant at different scale reactors
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http://hdl.handle.net/10045/109576
Title: | Electrochemical regeneration of spent activated carbon from drinking water treatment plant at different scale reactors |
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Authors: | Ferrández-Gómez, Borja | Ruiz-Rosas, Ramiro | Beaumont, Samuel | Cazorla-Amorós, Diego | Morallon, Emilia |
Research Group/s: | Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente |
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: | Spent activated carbon | Electrochemical regeneration | Electrochemical reactor |
Knowledge Area: | Química Física | Química Inorgánica |
Issue Date: | Feb-2021 |
Publisher: | Elsevier |
Citation: | Chemosphere. 2021, 264(Part 1): 128399. https://doi.org/10.1016/j.chemosphere.2020.128399 |
Abstract: | The electrochemical regeneration of real spent activated carbons (AC) used in drinking water treatment plants was studied at different reactor scales. The electrochemical regeneration was carried out in a 6 g filter-press cell and a 3.5 kg batch reactor, allowing the scaling-up of the process between the two electrolytic reactors. The effect of the electrolyte, the divided/undivided compartment configuration and the current density were studied in the filter-press cell. The effect of compartment configuration and the influence of the regeneration time were studied in the scaled-up reactor. A current density of 0.025 A cm−2 was used and the electrodes were Pt/Ti as anode and Pt/Ti and stainless-steel as cathode. The ACs were characterized by N2 adsorption isotherms to analyse the recovery of porosity and TPD-MS to analyse the AC surface after the electrochemical treatment. In filter-press cell, a recovery of the surface area of 96% was achieved after 8 h of treatment, by introducing the AC in the cathodic compartment using 0.05 M H2SO4 solution as electrolyte. In the 3.5 kg electrochemical reactor, 95% of the pristine AC surface area was recovered. Thus, electrochemical methods can provide a green alternative to the regeneration of spent AC. |
Sponsor: | This work was supported by the European Union-Horizon 2020 (PORTABLECRAC - SPIRE09 - 2017 Nº 768905). |
URI: | http://hdl.handle.net/10045/109576 |
ISSN: | 0045-6535 (Print) | 1879-1298 (Online) |
DOI: | 10.1016/j.chemosphere.2020.128399 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Peer Review: | si |
Publisher version: | https://doi.org/10.1016/j.chemosphere.2020.128399 |
Appears in Collections: | INV - MCMA - Artículos de Revistas Research funded by the EU INV - GEPE - Artículos de Revistas |
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Ferrandez-Gomez_etal_2021_Chemosphere.pdf | 1,02 MB | Adobe PDF | Open Preview | |
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