A novel hydrogen peroxide stabilizer in descaling process of metal surface

dc.contributor.authorOh, Dasom
dc.contributor.authorZhou, Lei
dc.contributor.authorChang, Daniel
dc.contributor.authorLee, Woojin
dc.creatorDasom, Oh
dc.date.accessioned2017-12-21T04:10:10Z
dc.date.available2017-12-21T04:10:10Z
dc.date.issued2018-02-15
dc.description.abstractAbstract A recently developed descaling process for metal surface, which utilizes sulphuric, hydrofluoric acid and hydrogen peroxide (H2O2), has attracted great attention in consideration of eco-friendly sustainable process development. However, the intrinsic presence of metal ions, especially Fe(III), dramatically accelerates H2O2 decomposition, resulting in undesirable economic losses and even paralysis of operation. In this study, the stability of H2O2 in aqueous descaling acid was assessed by varying the ferric content from 0 to 30 g/L and the temperature from 32 to 45 °C. The results showed that any minor fluctuation in either factors causes a big attenuation in the life span of H2O2, necessitating the addition of a stabilizer. Thereby, a comprehensive screening test for potential stabilizers was carried out for an attempt to decelerate the H2O2 decomposition. Among all prospects, 2-anilinoethanol (AE, 100 mg/L) showed the most prominent stabilizing potential by successfully extending the half-life of peroxide by a factor of 2.66 compared to a controlled condition. The feasibility of AE as a stabilizer was further explored by elucidating its fate with GC-MS and IC analyses. A series of aromatics and short-chain organic acids was identified as the reaction intermediates. Aniline, with great H2O2 stabilizing capacity, was a predominant byproduct, which could help explain the superb positive effect of AE.en_US
dc.identifierDOI:10.1016/j.cej.2017.11.058
dc.identifier.citationDasom Oh, Lei Zhou, Daniel Chang, Woojin Lee, A novel hydrogen peroxide stabilizer in descaling process of metal surface, In Chemical Engineering Journal, Volume 334, 2018, Pages 1169-1175en_US
dc.identifier.issn13858947
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S138589471731971X
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/2986
dc.language.isoenen_US
dc.publisherChemical Engineering Journalen_US
dc.relation.ispartofChemical Engineering Journal
dc.rights.license© 2017 Elsevier B.V. All rights reserved.
dc.subjectDescaling processen_US
dc.subjectAcid washingen_US
dc.subjectAnilineen_US
dc.subjectRadical scavengeren_US
dc.titleA novel hydrogen peroxide stabilizer in descaling process of metal surfaceen_US
dc.typeArticleen_US
elsevier.aggregationtypeJournal
elsevier.coverdate2018-02-15
elsevier.coverdisplaydate15 February 2018
elsevier.endingpage1175
elsevier.identifier.doi10.1016/j.cej.2017.11.058
elsevier.identifier.eid1-s2.0-S138589471731971X
elsevier.identifier.piiS1385-8947(17)31971-X
elsevier.identifier.scopusid85034225322
elsevier.openaccess0
elsevier.openaccessarticlefalse
elsevier.openarchivearticlefalse
elsevier.startingpage1169
elsevier.teaserA recently developed descaling process for metal surface, which utilizes sulphuric, hydrofluoric acid and hydrogen peroxide (H2O2), has attracted great attention in consideration of eco-friendly sustainable...
elsevier.volume334
workflow.import.sourcescience

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