Mehanizmi fotokatalitičke transformacije NOx u zraku

undergraduate thesis

• Title (english): The mechanisms of photocatalytic transformation of NOx in air
• Author: Danijela Petković Blažeković
• Mentor: Ivana Grčić (mentor)
• Committee member: Sanja Kovač (predsjednik povjerenstva)
• Committee member: Ivana Grčić (član povjerenstva)
• Committee member: Aleksandra Anić Vučinić (član povjerenstva)
• Committee member: Vitomir Premur (član povjerenstva)
• Granter: University of Zagreb; Faculty of Geotechnical Engineering; Varaždin
• Defense date and country: 2022-09-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Interdisciplinary Technical Sciences; Environmental Engineering

Abstract

Dušikovi oksidi, koji su ponajviše produkt izgaranja fosilnih goriva, imaju štetan učinak
na ekosustave, ozonski omotač te uzrokuju respiratorne bolesti kod ljudi. Najviše
koncentracije izmjerene su u urbanim područjima, posebice pokraj velikih prometnica.
Fotokataliza se pokazala kao jedna od najboljih metoda za uklanjanje onečišćivala iz
zraka i vode, a posebno je popularna solarna fotokataliza jer je za pokretanje reakcija
potrebno samo sunčevo zračenje.
Cilj ovog rada je ispitivanje fotokatalitičke razgradnje dušikovih oksida u CPC
(Compound parabolic collector) reaktoru u kojem su postavljene reciklirane gumene
podloge na koje je nanesen titan dioksid (TiO2) sol gel
metodom. Provedeni su
eksperimenti u praznom CPC reaktoru, CPC reaktoru s referentnim gumenim podlogama
te s gumenim podlogama na koje je nanesen TiO2 u mraku i pod UV zračenjem.
Provedenim eksperimentima dokazana je fotokatalitička aktivnost TiO2 na recikliranim
gumenim podlogama za uklanjanja dušikovih oksida iz struje zraka.

Abstract (english)

Nitrogen oxides, which are mostly the product of fossil fuels combustion, have a harmful
effect on ecosystems, the ozone layer and cause respiratory diseases in people. The
highest concentrations were measured in urban areas, especially near major roads.
Photocatalysis has proven to be one of the best methods for removing pollutants from air
and water and solar photocatalysis is particularly popular because only sunlight is needed
to initiate the reaction.
The aim of this work is to examine the photocatalytic decomposition of nitrogen oxides
in a CPC (Compound parabolic collector) reactor in which recycled rubber tiles were
placed on which titanium dioxide (TiO2) had been put by using a sol – gel method.
Experiments were carried out in an empty CPC reactor, a CPC reactor with reference
rubber tiles and with rubber tiles on which TiO2 was put without the presence of light and
under UV radiation. The conducted experiments proved the photocatalytic activity of
TiO2 on recycled rubber tiles for the removal of nitrogen oxides from the air.

• Keywords: dušikovi oksidi; fotokataliza; titan dioksid; reciklirane gumene podloge
• Keywords (english): nitrogen oxides; photocatalysis; titanium dioxide; recycled rubber tiles
• Language: croatian
• URN:NBN: urn:nbn:hr:130:416341
• Study programme: Title: Environmental Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/ baccalaurea) inženjer/ inženjerka inženjerstva okoliša (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/ baccalaurea) inženjer/ inženjerka inženjerstva okoliša)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to authenticated users
• Created on: 2022-10-24 07:46:09