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Increasing biodegradability of a real amine-contaminated spent caustic problematic stream through WAO and CWAO oxidation using a high specific surface catalyst from petcoke

dc.contributor.authorGonzález, Carlos
dc.contributor.authorPariente, María Isabel
dc.contributor.authorMolina, Raúl
dc.contributor.authorEspina, L.G.
dc.contributor.authorMasa, María
dc.contributor.authorBernal, Vicente
dc.contributor.authorMelero, Juan Antonio
dc.contributor.authorMartinez, Fernando
dc.date.accessioned2023-10-04T10:37:51Z
dc.date.available2023-10-04T10:37:51Z
dc.date.issued2023
dc.identifier.citationC. González, M.I. Pariente, R. Molina, L.G. Espina, M.O. Masa, V. Bernal, J.A. Melero, F. Martínez, Increasing biodegradability of a real amine-contaminated spent caustic problematic stream through WAO and CWAO oxidation using a high specific surface catalyst from petcoke, Chemical Engineering Journal, Volume 460, 2023, 141692, ISSN 1385-8947, https://doi.org/10.1016/j.cej.2023.141692es
dc.identifier.issn1385-8947
dc.identifier.urihttps://hdl.handle.net/10115/24679
dc.descriptionThe authors thank the financial support of the Community of Madrid through the projects IND2018/AMB-9611 and S2018/EMT-4341 REMTAVARES-CM. Moreover, the authors are grateful to Repsol for providing wastewater samples.es
dc.description.abstractDifferent operating conditions of wet air oxidation and catalytic wet air oxidation have been studied for the treatment of highly concentrated methyldiethanolamine wastewater streams from amine units of acid gas recovery in petrol refineries. These units occasionally generate streams of high methyldiethanolamine content that require special actions to avoid undesirable impacts on the downstream biological process of the petrochemical wastewater treatment plant due to its inhibition effect. The wet air oxidation treatment achieved remarkable removals of methyldiethanolamine, sulfides, chemical oxygen demand and total organic carbon (99%, 95%, 65% and 38%, respectively). Likewise, activated petroleum coke materials from the own refinery plant were tested as catalysts in the process. These materials were prepared under different conditions (chemical activating agent and thermal carbonization process). The catalytic wet air oxidation treatment using an activated petroleum coke was able to remove the methyldiethanolamine at milder operation conditions keeping a similar performance in terms of wastewater treatment removals as compared to the non-catalytic experiments. This technology significantly increased the biodegradability of the treated effluents ranging from 25 to 70 % due to the formation of more biodegradable substrates (acetic acid and ammonium) for further biological treatment.es
dc.language.isoenges
dc.publisherElsevieres
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectMethyldiethanolaminees
dc.subjectWet air oxidationes
dc.subjectCatalytic wet air oxidationes
dc.subjectBiodegradabilityes
dc.subjectPetcokees
dc.subjectSpent caustices
dc.titleIncreasing biodegradability of a real amine-contaminated spent caustic problematic stream through WAO and CWAO oxidation using a high specific surface catalyst from petcokees
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.1016/j.cej.2023.141692es
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses


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Attribution-NonCommercial-NoDerivatives 4.0 InternacionalExcept where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional