Izvorni znanstveni članak
Oxidation by-products of the C.I. Direct Blue 106 dye after ozonation
Polonca Lesjak
; Gorenje d.d., Velenje, Slovenija
Maja Bauman
; IOS, Inštitut za okoljevarstvo in senzorje d.o.o., Maribor, Slovenija
Mojca Poberžnik
orcid.org/0000-0002-8730-3359
; IOS, Inštitut za okoljevarstvo in senzorje d.o.o., Maribor, Slovenija
Mitja Kolar
; Univerza v Mariboru, Fakulteta za strojništvo, Center za senzorsko tehniko, Maribor, Slovenija
Aleksandra Lobnik
; Univerza v Mariboru, Fakulteta za strojništvo, Center za senzorsko tehniko, Maribor, Slovenija
Sažetak
The oxidation of the often used oxazine direct dye C.I. Direct Blue 106 (Direct Dye 106) in an aqueous solution (600 mg L-1) by ozonation was investigated. VIS spectra showed degradation of the oxazine groups in the initial Direct Dye 106 structure. The oxidation by-products, such as sulphate, nitrate, nitrite, chloride ions and phenolic compounds, were identified by MS-MS and the LC-MS analyses. After ozonation the wastewater containing the Direct Dye 106 showed no toxic characteristics, according to Daphnia magna test (24 h- EC50 > 75%).
Ključne riječi
ozone; coloured wastewater; C.I. Direct Blue 106; oxazine; oxidation by-products; MS-MS; LC-MS; Daphnia magna toxicity test
Hrčak ID:
142512
URI
Datum izdavanja:
12.9.2014.
Posjeta: 1.315 *