Fotokatalitička razgradnja diklofenaka pod UV-A i umjetnim sunčevim zračenjem

master's thesis

• Title (english): Photocatalytic degradation of diclofenac under UVA and artificial solar irradiation
• Author: Paula Bucić
• Mentor: Ana Lončarić Božić (mentor)
• Committee member: Ana Lončarić Božić (predsjednik povjerenstva)
• Committee member: Hrvoje Kušić (član povjerenstva)
• Committee member: Šime Ukić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2016-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Interdisciplinary Technical Sciences; Environmental Engineering

Abstract

Sve veća potrošnja lijekova u svijetu rezultira kontinuiranim otpuštanjem farmaceutika i njihovih metabolita u okoliš. Najznačajniji izvor farmaceutika u okolišu su komunalne otpadne vode, zbog neučinkovitosti konvencionalnih uređaja za obradu otpadnih voda u uklanjanju takvog tipa onečišćivala. Diklofenak je nesteroidini protu-upalni lijek. Zbog njegove česte uporabe, jedan je od najčešće detektiranih farmaceutika u okolišu i prirodnim vodama. Stoga, nameće se potreba za dodatnim pročišćavanjem obrađenih voda sa ciljem uklanjanja farmaceutika i drugih prioritetnih tvari. Pored konvencionalnih metoda obrade, napredni oksidacijski procesi su jedna od mogućnosti obrade takvih otpadnih voda. Fototokatalitički procesi aktivirani Sunčevim zračenjem predstavljaju napredak s ekološkog i ekonomskog aspekta. Cilj ovog rada bio je obraditi modelnu otpadnu vodu diklofenaka procesom sa TiO2/Fe-ZSM5 fotokatalizatorom uz simulirano Sunčevo zračenje. Dizajnom eksperimenta te korištenjem metode odzivnih površina istražen je utjecaj procesnih parametara na učinkovitost obrade te su određeni optimalni uvjeti provedbe procesa. Analizom ekoloških pokazatelja kvalitete voda ustanovljeno je da je modelna otpadna voda nakon 90 minuta fotokatalitičkog proces podložna biološkoj razgradnji te se može obrađivati na konvencionalnim uređajima za obradu otpadnih voda.

Abstract (english)

High rate of pharmaceuticals consumption worldwide has resulted with its continuous release into the environment. Wastewaters are found to be the main pathway of pharmaceuticals leaching into the environment, due to the inefficiency of municipal wastewater treatment plants in removal of such pollutant. Diclofenac is nonsteroidal anti-inflammatory drug. Due to its common use, it is one of the most frequently detected pharmaceutics in the environment and water streams. Therefore, need for additional processing of wastewater treatment plant effluents to remove pharmaceuticals and other priority pollutants is imposed. Among conventional oxidation methods, advance oxidation processes represent a potential solution. Photocatalytic processes activated with solar irradiation represent progress from ecological and economical aspect. Aim of this research was to treat diclofenac model wastewater applying TiO2/Fe-ZSM5 photocatalyst under simulated solar irradiation. Influence of process parameters on process efficiency was investigated with design of experiments in combination with response surface methodology, and optimal process parameters values were obtained. Analysis of water quality parameters revealed that the model wastewater is susceptible to biodegradation after 90 minutes of photocatalytic process and it is suitable for further treatment on conventional wastewater treatment plants.

• Keywords: napredni oksidacijski procesi; diklofenak; TiO2; zeoliti; dizajn eksperimenta; metoda odzivnih površina
• Keywords (english): advanced oxidation processes; diclofenac; TiO2; zeolites; design of experiment; response surface methodology
• Language: croatian
• URN:NBN: urn:nbn:hr:149:257185
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-11-25 10:58:58