Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20978
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dc.contributorDepartment of Civil and Environmental Engineering-
dc.creatorXu, LJ-
dc.creatorChu, W-
dc.creatorGraham, N-
dc.date.accessioned2015-05-26T08:12:49Z-
dc.date.available2015-05-26T08:12:49Z-
dc.identifier.issn1350-4177-
dc.identifier.urihttp://hdl.handle.net/10397/20978-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2012 Elsevier B.V.en_US
dc.rightsThis is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)en_US
dc.rightsThe following publication Xu, L. J., Chu, W., & Graham, N. (2013). A systematic study of the degradation of dimethyl phthalate using a high-frequency ultrasonic process. Ultrasonics sonochemistry, 20(3), 892-899 is available at https://doi.org/10.1016/j.ultsonch.2012.11.005en_US
dc.subjectAdvanced oxidation processen_US
dc.subjectDimethyl phthalateen_US
dc.subjectHydrogen peroxideen_US
dc.subjectIntermediatesen_US
dc.subjectSonochemicalen_US
dc.subjectUltrasounden_US
dc.titleA systematic study of the degradation of dimethyl phthalate using a high-frequency ultrasonic processen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage892-
dc.identifier.epage899-
dc.identifier.volume20-
dc.identifier.issue3-
dc.identifier.doi10.1016/j.ultsonch.2012.11.005-
dcterms.abstractA comprehensive study of the sonochemical degradation of dimethyl phthalate (DMP) was carried out using high-frequency ultrasonic processes. The effects of various operating parameters were investigated, including ultrasonic frequency, power density, initial DMP concentration, solution pH and the presence of hydrogen peroxide. In general, a frequency of 400 kHz was the optimum for achieving the highest DMP degradation rate. The degradation rate was directly proportional to the power density and inversely related to the initial DMP concentration. It was interesting to find that faster removal rate was observed under weakly acidic condition, while hydrolysis effect dominated in extreme-basic condition. The addition of hydrogen peroxide can increase the radical generation to some extent. Furthermore, both hydroxylation of the aromatic ring and oxidation of the aliphatic chain appear to be the major mechanism of DMP degradation by sonolysis based on LC/ESI-MS analysis. Among the principle reaction intermediates identified, tri- and tetra-hydroxylated derivatives of DMP, as well as hydroxylated monomethyl phthalates and hydroxylated phthalic acid were reported for the first time in this study. Reaction pathways for DMP sonolysis are proposed based on the detected intermediates.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationUltrasonics sonochemistry, 2013, v. 20, no. 3, p. 892-899-
dcterms.isPartOfUltrasonics sonochemistry-
dcterms.issued2013-
dc.identifier.isiWOS:000315322200015-
dc.identifier.scopus2-s2.0-84872598943-
dc.identifier.rosgroupidr66879-
dc.description.ros2012-2013 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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