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Primena homogenih i heterogenih unapređenih oksidacionih procesa za degradaciju tekstilne antrahinonske boje

The use of homogeneous and heterogeneous advanced oxidation processes for degradation of textile anthraquinone dye

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2015
Disertacija169.pdf (1.944Mb)
Radovic_Miljana_D.pdf (4.393Mb)
Author
Radović, Miljana D.
Mentor
Bojić, Aleksandar
Committee members
Onjia, Antonije
Anđelković, Tatjana
Rančić, Sofija
Nikolić, Goran
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Abstract
The subject of this dissertation will be to compare the degradation efficiency of anthraquinone dye Reactive Blue 19 (RB 19) by homogeneous (H2O2/UV, Fe2+/ H2O2 and Fe2+/H2O2/UV) and heterogeneous (TiO2/UV, TiO2/UV/H2O2 and TiO2/UV/KBrO2) advanced oxidation processes. This study will determine the optimal conditions for operating parameters of mentioned processes to optimize their use and achieve maximum efficiency. The mechanism of •ОH generation in certain processes and its effects on anthraquinone dye RB 19 will be defined. With homogeneous advanced oxidation processes, the results of the influence of initial peroxide concentration showed its specific activatory or inhibitory effect, which depends on its applied concentration. Optimal initial concentration of peroxide at which a maximum efficiency of the dye removal was obtained, was in the range from 20,0 to 40,0 mmol dm-3. With heterogeneous advanced oxidation processes, the optimal concentration of TiO2 was 1,0 g dm-3, and optima...l concentration of electron acceptors (H2O2 and KBrO3) was 30,0 mmol dm-3. With the increase of RB 19 dye concentration, degradation efficiency decreases with all investigated processes. Dye removal efficiency increases along with the increase of UV ligut intensity, due to increase of generated •OH radicals concentration. Presence of organic and inorganic anions, typical constituents of surface waters and wastewates, revealed that investigated anions affected removal efficiency, which depends on their concentrations and initial pH value. Separation and identification of degradation intermediates will be carried out using LC-mass spectrometry (LC/ESI/MSn), and the identification of the low-molecular mineralization products will be carried out using ion chromatography.

Faculty:
University of Niš, Faculty of Science and Mathematics
Date:
07-07-2015
Projects:
  • Development and characterization of novel biosorbent for natural and waste water treatment (RS-34008)
Keywords:
Antrahinonske boje / advanced oxidation processes / reaktivne dekolorizacija / degradacija / masena spektrometrija / reaktivne antrahinonske boje / unapređeni oksidacioni procesi / decolorization / degradation / mass spectrometry / reactive anthraquinone dyes
[ Google Scholar ]
URI
http://eteze.ni.ac.rs/application/showtheses?thesesId=2253
http://nardus.mpn.gov.rs/handle/123456789/4313
https://fedorani.ni.ac.rs/fedora/get/o:1010/bdef:Content/download
http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70052&RID=1024999401

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