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master's thesis
Optimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2016. urn:nbn:hr:149:306462
Topolnik, Sanja
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Topolnik, S. (2016). Optimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:306462

Topolnik, Sanja. "Optimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:149:306462

Topolnik, Sanja. "Optimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:149:306462

Topolnik, S. (2016). 'Optimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:306462

Topolnik S. Optimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2016 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:149:306462

S. Topolnik, "Optimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:149:306462

Metadata
TitleOptimiranje uvjeta fotokatalitičke razgradnje azo bojila uz poli(3,4-etilendioksitiofen)/TiO2 fotokatalizator i simulirano Sunčevo zračenje
Title (english)Optimization of photocatalytic degradation process of azo dyes with poly (3,4-ethylenedioxythiophene) /TiO2 photocatalyst and simulated solar radiation
AuthorSanja Topolnik
MentorZlata Hrnjak-Murgić (mentor)
Committee memberZlata Hrnjak-Murgić (predsjednik povjerenstva)
Committee memberZvonimir Katančić (član povjerenstva)
Committee memberElvira Vidović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2016-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Interdisciplinary Technical Sciences
Environmental Engineering
Abstract
Otpadne vode industrija proizvodnje i primjene bojila, osim samih bojila sadrže i različite nusprodukte i pomoćne kemikalije koje su slabo biorazgradljive, te često toksične i kancerogene. Takve otpadne vode potrebno je obraditi prije ispusta. Uobičajene tehnologije obrade temeljene na fizikalnim i biološkim metodama često nisu dovoljno djelotvorne. Napredni oksidacijski procesi (AOP) u kojima pod utjecajem kemijske, električne ili energije zračenja, nastaju vrlo reaktivni hidroksilni radikali odlikuju se mogućnošću brze i djelotvorne razgradnje organskih onečišćivala. U radu je sintetiziran polimerni fotokatalitički nanokompozit poli(3,4-etilendioksitiofen)/TiO2 kemijskom oksidacijskom polimerizacijom s dva oksidansa: FeCl3 i (NH4)2S2O8 te je ispitan utjecaj oksidansa na strukturu nastalog nanokompozita i fotokatalitičku učinkovitost. Karakterizacija je provedena infracrvenom spektroskopijom s Fourierovim transformacijama (FT-IR), a uzorcima je određena elektrovodljivost. Fotokatalitička učinkovitost sintetiziranih nanokompozitnih fotokatalizatora ispitana je praćenjem uklanjanja azo-bojila Reactive Red 45 (RR45) pod simuliranim Sunčevim zračenjem. Tijekom procesa fotokatalize praćeno je obezbojenje određivanjem promjene apsorbancije korištenjem UV/Vis spektrofotometra. Također, praćen je proces mineralizacije RR45 bojila mjerenjem ukupnog organskog ugljika (TOC). Nadalje, provedena je optimizacija uvjeta fotokatalize gdje se je ispitivao utjecaj kiselosti/lužnatosti (pH) i koncentracije fotokatalizatora na učinkovitost procesa uklanjanja bojila. Rezultati su pokazali da tip oksidansa ima značajan utjecaj na fotokatalitičku djelotvornost polimernih nanokompozita pod simuliranim Sunčevim zračenjem.
Abstract (english)
Wastewater industry production and application of dyes, beside the dyes itself contain various by-products and auxiliary chemicals which are poorly biodegradable and often toxic and carcinogenic. Such wastewater needs to be treated before discharge. Typical processing technology based on the physical and biological methods are often not effective enough. Advanced oxidation processes (AOP) in which highly reactive hydroxyl radicals are formed under the influence of chemical, electrical or radiation energy, have the capacity and capability of quick and effective degradation of organic pollutants. In this work polymer photocatalytic nanocomposite poly(3,4-ethylenedioxythiophene)/TiO2 was synthesized by chemical oxidative polymerization with two oxidants: FeCl3 and (NH4)2S2O8. The effect of oxidants on the structure of the resulting nanocomposites and photocatalytic efficiency was investigated. Characterization of samples was carried out by infrared spectroscopy with Fourier transform (FT-IR) and by measuring electro conductivity. The photocatalytic efficiency of the synthesized nanocomposite photocatalyst was examined by monitoring the removal of azo dye Reactive Red 45 (RR45) under the simulated solar irradiation. The discoloration was followed by UV/Vis spectrophotometer and as a measure of dye mineralization total organic carbon (TOC) was determined. Optimization of photocatalytic conditions was carried out in terms of examining the impact of acidity/alkalinity (pH) and the concentration of photocatalyst on dye removal efficiency. The results showed that the type of oxidant has a significant impact on the structure formation of nanocomposite and on its photocatalytic efficiency under simulated solar irradiation.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:306462
Study programmeTitle: Environmental Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka ekoinženjerstva (magistar/magistra inženjer/inženjerka ekoinženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-11-09 12:09:30