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Degradation pathways of aniline in aqueous solutions during electro-oxidation with BDD electrodes and UV/H2O2 treatment.
Chemosphere. 2017 Jan; 166:230-237.C

Abstract

In this work, it has been studied the mineralization of aniline, a toxic substance of low biodegradability typically found in many industrial wastewaters, through electro-oxidation using boron doped diamond (BDD) electrodes and photo-oxidation (UV photolysis and UV/H2O2 treatments). It was observed that in electro-oxidation and UV/H2O2, it was feasible to reach aniline mineralizations higher than 85%. Two different degradation routes have been observed during the aniline oxidation in these two treatments. The first route was the mineralization pathway, in which aniline was oxidized to CO2, water and nitrate. The second route was the polyaniline pathway in which polyanilines of high molecular weight are formed. The intermediate compounds involved in both degradation routes are different depending on the treatment used. In the electro-oxidation, denitrification processes were also observed. From an economical point of view, electro-oxidation of aniline using BDD electrodes is more interesting than UV/H2O2 due it has an 87% lower operational cost. So, electro-oxidation using BDD electrodes seems to be a more suitable technique for the mineralization of wastewater containing aniline than UV or H2O2 based technologies.

Authors+Show Affiliations

IQS School of Engineering, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain.IQS School of Engineering, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain.IQS School of Engineering, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain.IQS School of Engineering, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain. Electronic address: rafael.gonzalez@iqs.url.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27697712

Citation

Benito, Aleix, et al. "Degradation Pathways of Aniline in Aqueous Solutions During Electro-oxidation With BDD Electrodes and UV/H2O2 Treatment." Chemosphere, vol. 166, 2017, pp. 230-237.
Benito A, Penadés A, Lliberia JL, et al. Degradation pathways of aniline in aqueous solutions during electro-oxidation with BDD electrodes and UV/H2O2 treatment. Chemosphere. 2017;166:230-237.
Benito, A., Penadés, A., Lliberia, J. L., & Gonzalez-Olmos, R. (2017). Degradation pathways of aniline in aqueous solutions during electro-oxidation with BDD electrodes and UV/H2O2 treatment. Chemosphere, 166, 230-237. https://doi.org/10.1016/j.chemosphere.2016.09.105
Benito A, et al. Degradation Pathways of Aniline in Aqueous Solutions During Electro-oxidation With BDD Electrodes and UV/H2O2 Treatment. Chemosphere. 2017;166:230-237. PubMed PMID: 27697712.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation pathways of aniline in aqueous solutions during electro-oxidation with BDD electrodes and UV/H2O2 treatment. AU - Benito,Aleix, AU - Penadés,Aida, AU - Lliberia,Josep Lluis, AU - Gonzalez-Olmos,Rafael, Y1 - 2016/09/30/ PY - 2016/07/04/received PY - 2016/09/21/revised PY - 2016/09/22/accepted PY - 2016/10/5/pubmed PY - 2017/3/25/medline PY - 2016/10/5/entrez KW - Advanced oxidation processes KW - Aniline KW - BDD KW - Electro-oxidation KW - UV/H(2)O(2) SP - 230 EP - 237 JF - Chemosphere JO - Chemosphere VL - 166 N2 - In this work, it has been studied the mineralization of aniline, a toxic substance of low biodegradability typically found in many industrial wastewaters, through electro-oxidation using boron doped diamond (BDD) electrodes and photo-oxidation (UV photolysis and UV/H2O2 treatments). It was observed that in electro-oxidation and UV/H2O2, it was feasible to reach aniline mineralizations higher than 85%. Two different degradation routes have been observed during the aniline oxidation in these two treatments. The first route was the mineralization pathway, in which aniline was oxidized to CO2, water and nitrate. The second route was the polyaniline pathway in which polyanilines of high molecular weight are formed. The intermediate compounds involved in both degradation routes are different depending on the treatment used. In the electro-oxidation, denitrification processes were also observed. From an economical point of view, electro-oxidation of aniline using BDD electrodes is more interesting than UV/H2O2 due it has an 87% lower operational cost. So, electro-oxidation using BDD electrodes seems to be a more suitable technique for the mineralization of wastewater containing aniline than UV or H2O2 based technologies. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/27697712/Degradation_pathways_of_aniline_in_aqueous_solutions_during_electro_oxidation_with_BDD_electrodes_and_UV/H2O2_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(16)31306-6 DB - PRIME DP - Unbound Medicine ER -