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Magnesium oxide production from chrysotile asbestos detoxification with oxalic acid treatment

Valouma Aikaterini, Verganelaki Anastasia, Tetoros Ioannis, Maravelaki Pagona-Noni, Gidarakos Evaggelos

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URIhttp://purl.tuc.gr/dl/dias/74244B3A-7CBF-44C6-9371-B1140A98433B-
Identifierhttps://www.sciencedirect.com/science/article/pii/S0304389417302613?via%3Dihub-
Identifierhttps://doi.org/10.1016/j.jhazmat.2017.04.019-
Languageen-
Extent8 pagesen
TitleMagnesium oxide production from chrysotile asbestos detoxification with oxalic acid treatmenten
CreatorValouma Aikaterinien
CreatorΒαλουμα Αικατερινηel
CreatorVerganelaki Anastasiaen
CreatorΒεργανελακη Αναστασιαel
CreatorTetoros Ioannisen
CreatorΤετωρος Ιωαννηςel
CreatorMaravelaki Pagona-Nonien
CreatorΜαραβελακη Παγωναel
CreatorGidarakos Evaggelosen
CreatorΓιδαρακος Ευαγγελοςel
PublisherElsevieren
Content SummaryThis article describes the detoxification of pure chrysotile (Chr) asbestos by following an acid leaching treatment with oxalic acid dihydrate (Oxac) (H2C2O4·2H2O). Oxac was chosen due to its low environmental impact (or toxicity) and cost. We demonstrate the effectiveness of different concentrations of Oxac as proposed formulations. The results from FTIR, XRD and optical microscopy analyses indicated that all the applied treatments destructed the Chr structure while a new biomaterial, Glushinskite (Gls) was formed by the reaction between Oxac with the outer Brucite (Brc) (MgO2) layer surface of Chr. Oxac 0.05 M was selected as the optimal concentration for an eight-day treatment for the detoxification. The heating of the supernatant of the above-treated solution at 480 °C, yielded MgO in a considerable concentration (8.29% w/w). According to the energy consumption study the whole applied procedure is viable with an economic profit up to 4.3% and a low cost method of detoxification on the operation of a potential asbestos waste management site. en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2018-05-31-
Date of Publication2017-
SubjectChrysotile asbestosen
SubjectDetoxificationen
SubjectMagnesium oxideen
SubjectOxalic aciden
SubjectRecoveryen
Bibliographic CitationA. Valouma, A. Verganelaki, I. Tetoros, P. Maravelaki-Kalaitzaki and E. Gidarakos, "Magnesium oxide production from chrysotile asbestos detoxification with oxalic acid treatment," J. Hazard. Mater., vol. 336, pp. 93-100, Aug. 2017. doi: 10.1016/j.jhazmat.2017.04.019en

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