TiO2 mediated photocatalytic mineralization of a non-ionic detergent: comparison and combination with other advanced oxidation procedures
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Tartalom: http://real.mtak.hu/50822/
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published



Type = Article
Cím:
TiO2 mediated photocatalytic mineralization of a non-ionic detergent: comparison and combination with other advanced oxidation procedures
Létrehozó:
Hegedűs, Péter
Szabó-Bárdos, Erzsébet
Horváth, Ottó
Horváth, Krisztián
HajĂłs, PĂ©ter
Dátum:
2015
Téma:
QD01 Analytical chemistry / analitikai kémia
QD02 Physical chemistry / fizikai kémia
QD03 Inorganic chemistry / szervetlen kémia
Tartalmi leírás:
Triton X-100 is one of the most widely applied man-made non-ionic surfactants. This detergent can hardly be degraded by biological treatment. Hence, a more efficient degradation method is indispensable for the total mineralization of this pollutant. Application of heterogeneous photocatalysis based on TiO2 suspension is a possible solution. Its efficiency may be improved by the addition of various reagents. We have thoroughly examined the photocatalytic degradation of Triton X-100 under various circumstances. For comparison, the efficiencies of ozonation and treatment with peroxydisulfate were also determined under the same conditions. Besides, the combination of these advanced oxidation procedures (AOPs) were also studied. The mineralization of this surfactant was monitored by following the TOC and pH values, as well as the absorption and emission spectra of the reaction mixture. An ultra-high-performance liquid chromatography (UHPLC) method was developed and optimized for monitoring the degradation of Triton X-100. Intermediates were also detected by GC-MS analysis and followed during the photocatalysis, contributing to the elucidation of the degradation mechanism. This non-ionic surfactant could be efficiently degraded by TiO2-mediated heterogeneous photocatalysis. However, surprisingly, its combination with the AOPs applied in this study did not enhance the rate of the mineralization. Moreover, the presence of persulfate hindered the photocatalytic degradation.
Nyelv:
magyar
magyar
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
text
Azonosító:
Hegedűs, Péter and Szabó-Bárdos, Erzsébet and Horváth, Ottó and Horváth, Krisztián and Hajós, Péter (2015) TiO2 mediated photocatalytic mineralization of a non-ionic detergent: comparison and combination with other advanced oxidation procedures. Materials, 8. pp. 231-250. ISSN 1996-1944
Kapcsolat:
https://doi.org/10.3390/ma8010231
doi:10.3390/ma8010231