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Employing Microbial Electrochemical Technology-driven electro-Fenton oxidation for the removal of recalcitrant organics from sanitary landfill leachate

The feasibility of employing Microbial Electrochemical Technology (MET)-driven electro-Fenton oxidation was evaluated as a post-treatment of an anammox system treating sanitary landfill leachate. Two different MET configuration systems were operated using effluent from partial nitrification-anammox reactor treating mature leachate. In spite of the low organic matter biodegradability of the anammox’s effluent (2401 ± 562 mg COD L −1 ; 237 ± 57 mg BOD 5 L −1 ), the technology was capable to reach COD removal rates of 1077–1244 mg L −1 d −1 with concomitant renewable electricity production (43.5 ± 2.1 Am −3 N CC ). The operation in continuous mode versus batch mode reinforced the removal capacity of the technology. The recirculation of acidic catholyte into anode chamber hindered the anodic efficiency due to pH stress on anodic electricigens. The obtained results demonstrated that the integrated system is a potentially applicable process to deal with bio-recalcitrant compounds present in mature landfill leachate

The authors would like to thank the Spanish Ministry (CTQ2014-53718-R) and the University of Girona (MPCUdG2016/137) for their financial support. LEQUIA has been recognized as consolidated research group by the Catalan Government (2014-SGR-1168)

© Bioresource Technology, 2017, vol. 243, p. 949-956

Elsevier

Author: Hassan, Muhammad
Pous Rodríguez, Narcís
Xie, Bing
Colprim Galceran, Jesús
Balaguer i Condom, Maria Dolors
Puig Broch, Sebastià
Date: 2017 November 1
Abstract: The feasibility of employing Microbial Electrochemical Technology (MET)-driven electro-Fenton oxidation was evaluated as a post-treatment of an anammox system treating sanitary landfill leachate. Two different MET configuration systems were operated using effluent from partial nitrification-anammox reactor treating mature leachate. In spite of the low organic matter biodegradability of the anammox’s effluent (2401 ± 562 mg COD L −1 ; 237 ± 57 mg BOD 5 L −1 ), the technology was capable to reach COD removal rates of 1077–1244 mg L −1 d −1 with concomitant renewable electricity production (43.5 ± 2.1 Am −3 N CC ). The operation in continuous mode versus batch mode reinforced the removal capacity of the technology. The recirculation of acidic catholyte into anode chamber hindered the anodic efficiency due to pH stress on anodic electricigens. The obtained results demonstrated that the integrated system is a potentially applicable process to deal with bio-recalcitrant compounds present in mature landfill leachate
The authors would like to thank the Spanish Ministry (CTQ2014-53718-R) and the University of Girona (MPCUdG2016/137) for their financial support. LEQUIA has been recognized as consolidated research group by the Catalan Government (2014-SGR-1168)
Format: application/pdf
Citation: https://doi.org/10.1016/j.biortech.2017.07.042
ISSN: 0960-8524
Document access: http://hdl.handle.net/10256/14454
Language: eng
Publisher: Elsevier
Collection: MINECO/PE 2015-2017/CTQ2014-53718-R
Reproducció digital del document publicat a: https://doi.org/10.1016/j.biortech.2017.07.042
Articles publicats (D-EQATA)
Is part of: © Bioresource Technology, 2017, vol. 243, p. 949-956
Rights: Tots els drets reservats
Subject: Oxidació electrolítica
Electrolytic oxidation
Compostos orgànics -- Biodegradació
Organic compounds -- Biodegradation
Fenton, Reacció de
Fenton reaction
Title: Employing Microbial Electrochemical Technology-driven electro-Fenton oxidation for the removal of recalcitrant organics from sanitary landfill leachate
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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