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master's thesis
Napredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. urn:nbn:hr:149:991423
Valek, Lorena
University of Zagreb
Faculty of Chemical Engineering and Technology

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

Cite this document

Valek, L. (2022). Napredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:991423

Valek, Lorena. "Napredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:991423

Valek, Lorena. "Napredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:991423

Valek, L. (2022). 'Napredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 29 March 2025, https://urn.nsk.hr/urn:nbn:hr:149:991423

Valek L. Napredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2022 [cited 2025 March 29] Available at: https://urn.nsk.hr/urn:nbn:hr:149:991423

L. Valek, "Napredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:149:991423

Metadata
TitleNapredni oksidacijski procesi kao predtretman biološkoj obradi voda onečišćenih polivinil kloridom
Title (english)AOPs as a pre-step to biological treatment of PVC polluted waters
AuthorLorena Valek
MentorŠime Ukić (mentor)
Committee memberŠime Ukić (predsjednik povjerenstva)
Committee memberDajana Kučić Grgić (član povjerenstva)
Committee memberMatija Cvetnić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2022-09-13, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Kontinuirana upotreba plastike u svakodnevnom životu dovodi do sve veće prisutnost plastičnog otpada u okolišu. Veliku zabrinutost predstavljaju čestice mikroplastike (MP) koje zbog svoje veličine i drugih svojstava mogu imati štetan utjecaj na brojne organizme i ukupni ekosustav. Izrazito negativan učinak mogu imati mikročestice poli(vinil-klorida) (PVC-a) jer tijekom njihove razgradnje dolazi do otpuštanja klorida u okoliš uz mogućnost nastajanja toksičnih međuprodukata. S obzirom da klasične... More metode obrade voda nisu dovoljno učinkovite za uklanjanje PVC mikroplastike iz vode, razmotrena je primjena naprednih oksidacijskih procesa (AOP). AOP-i se temelje na in situ stvaranju reaktivnih radikala koji mogu razgraditi organske onečišćujuće tvari. AOP tretman često nije ekonomski prihvatljiv; stoga se razmatra njihova upotreba u kombinaciji s biološkim procesima. U ovom radu ispitivana je učinkovitost UV-C/H2O2 i UV-C/S2O82– procesa u razgradnji mikročestica PVC-a veličine 25-100 μm. Cilj istraživanja bio je odrediti koji AOP će uzrokovati značajniju razgradnju PVC-a te odrediti optimalne uvjete njegovog provođenja. Karakterizacija MP-a provedena je FTIR spektroskopijom, a za vodeni medij provodile su se TOC i LC-MS analize. Iz dobivenih rezultata vidljivo je kako primijenjeni AOP-i ne uzrokuju potpunu mineralizaciju ispitivane mikroplastike. Veća fragmentacija PVC-a primijećena je nakon obrade UV-C/S2O82– procesom; samim time je zaključeno da je on kvalitetniji izbor kao predtretman biološkoj obradi voda onečišćenih mikročesticama PVC-a. Učinkovitost razgradnje ovisi, naravno, o vremenu razgradnje, koncentraciji oksidansa i pH medija. UV-C/S2O82– proces ima potencijal povećati biorazgradivost PVC-a. Kombinacija ovih dvaju procesa doprinos je ideji zelene kemije. Less
Abstract (english)
Due to the constant use of plastics in daily life, plastic waste in the environment is becoming more and more common. Particles of microplastics (MP) are of major concern due to their size and some other properties. They have various adverse effects on organisms and the entire ecosystem. Poly(vinyl-chloride) (PVC) microparticles have particularly adverse effects because their degradation releases chlorides into the environment, which can form various toxic substances. Conventional water... More treatment methods are not efficient enough to remove MP PVC from polluted waters, so the application of advanced removal technologies has been considered. Advanced oxidation processes (AOPs) are processes based on the in situ formation of highly reactive radicals capable of degrading organic pollutants from aqueous media. AOPs are not economically feasible, so a combination of AOPs and biological processes is being considered as a treatment approach. In this study, the degradation of PVC particles with size between 25 and 100 μm by UV-C/H2O2 and UV-C/S2O82– processes was tested. The objective was to determine which of the tested AOPs caused more degradation of MP PVC and which conditions were optimal. The PVC microparticles were characterized by FTIR analysis and the aqueous medium was analyzed by TOC and MS. According to the research results, it was found that both AOPs did not cause complete mineralization of MP PVC under the applied conditions. More fragmentation of MP PVC was observed after UV-C/S2O82– treatment. Moreover, it is considered that the UV-C/S2O82– process is the better choice as a pretreatment for biological processes of waters contaminated with PVC microparticles. Of course, the degradation efficiency depends on the applied degradation time, oxidant concentration and pH. The UV-C/S2O82- process has the potential to increase the biodegradability of PVC. The combination of these two processes is a contribution to the development of sustainable water treatment technologies that are in line with the idea of green chemistry. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:991423
ProjectNumber: IP-2019-04-9661
Title: Primjena naprednih tehnologija obrade voda za uklanjanje mikroplastike
Title: Advanced Water Treatment Technologies for Microplastics Removal
Acronym: AdWaTMiR
Leader: Tomislav Bolanča
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Applied Chemistry - Graduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Environmental chemistry and green technologies
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra primijenjene kemije (magistar/magistra primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2023-03-19 17:30:33
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