Effect of concentration and flow rate of electrolyte on electrochemical regeneration of activated carbon at pilot-plant scale
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Title: | Effect of concentration and flow rate of electrolyte on electrochemical regeneration of activated carbon at pilot-plant scale |
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Authors: | Ferrández-Gómez, Borja | Martínez-Sánchez, Beatriz | Cazorla-Amorós, Diego | Morallon, Emilia |
Research Group/s: | Electrocatálisis y Electroquímica de Polímeros | Química Agrícola | Materiales Carbonosos y Medio Ambiente |
Center, Department or Service: | Universidad de Alicante. Departamento de Bioquímica y Biología Molecular y Edafología y Química Agrícola | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Keywords: | Activated carbon | Electrochemical regeneration | Electrolyte | Flow rate | DWTP, Pilot-plant scale |
Issue Date: | 18-Aug-2023 |
Publisher: | Elsevier |
Citation: | Journal of Electroanalytical Chemistry. 2023, 946: 117727. https://doi.org/10.1016/j.jelechem.2023.117727 |
Abstract: | Few research has investigated the problem of regeneration of activated carbon once it has been saturated by organic and inorganic contaminants. Among the regeneration methods, electrochemical technology is one of the most advanced, demonstrating its effectiveness in pilot-plant scale experiments using samples obtained from drinking water treatment plants. In the present study, the optimization of a parallel plate electrochemical reactor with a capacity of 15 kg of activated carbon, has been achieved regarding the electrolyte concentration and flow rate. A regeneration efficiency of approximately 90% was achieved with a 0.25 M H2SO4 concentration, while lower concentrations resulted in a voltage exceeding the acceptable limits for this type of installation. In addition, higher flow rates imply a higher recovery of the porous texture of the regenerated activated carbon. This is, to the best of our knowledge, the first report where these two experimental variables are optimized in a pilot-scale process with real saturated activated carbon samples with different types of pollutants adsorbed in the activated carbon. |
Sponsor: | This work was supported by the European Community‘s Framework Programme for Research and Innovation Horizon 2020 [grant number 768905]. The researchers would like to thank Empresa Mixta Valenciana de Aguas S.A. and Global Omnium Medioambiente S.L. (Valencia, Spain) for the supply of spent activated carbon samples. |
URI: | http://hdl.handle.net/10045/136676 |
ISSN: | 1572-6657 (Print) | 1873-2569 (Online) |
DOI: | 10.1016/j.jelechem.2023.117727 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2023 The Authors. Published by Elsevier B.V. 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.jelechem.2023.117727 |
Appears in Collections: | INV - Química Agrícola - Artículos de Revistas INV - MCMA - Artículos de Revistas Research funded by the EU INV - GEPE - Artículos de Revistas |
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Ferrandez-Gomez_etal_2023_JElectroanalChem.pdf | 4,63 MB | Adobe PDF | Open Preview | |
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