Usporedba primjene ferata(VI) i Fentonova procesa za uklanjanje mikroplastike iz vodenog medija

undergraduate thesis

• Title (english): Comparison of ferrate(VI) and Fenton process for removal of microplastics from aqueous media
• Author: Barbara Barusić
• Mentor: Marin Kovačić (mentor)
• Committee member: Marin Kovačić (predsjednik povjerenstva)
• Committee member: Zvonimir Katančić (član povjerenstva)
• Committee member: Irena Ivanišević (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2023-07-07, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Plastični materijali nezamjenjivi su u današnjem svijetu. Zbog svoje jednostavne proizvodnje i ekonomske isplativosti, jednostavnog oblikovanja te odličnih mehaničkih i kemijskih svojstava, koristi se u svim aspektima našega života. Primjena i proizvodnja iz godine u godinu raste, ali raste i problem zbrinjavanja plastičnog otpada. U okolišu plastični otpad pod utjecajem prirodnih sila fragmentira se na manje čestice veličine do 5 mm, koje zajednički nazivam mikroplastikom. U okviru ovoga rada ispitano je uklanjanje modelne mikroplastike, odnosno čestica poli(etilen tereftalata) i polipropilena, iz vodenog medija primjenom dva usporedna procesa: oksidacije/koagulacije feratima(VI) te Fenton procesom. Uzorci su karakterizirani pomoću infracrvene spektroskopije s Fourierovom transformacijom (FTIR) kako bi se identificirale kemijske promjene uzoraka. Temeljem dobivenih rezultata ustanovljena je degradacija uzoraka polipropilena, pri čemu je identificiran nastanak dvostrukih veza kod polipropilena. Međutim, kod poli(etilen tereftalata) FTIR analizom nisu ustanovljene jednoznačne promjene.

Abstract (english)

Plastic materials are irreplaceable in today's world. Due to their ease of production and economic viability, ease of shaping and excellent mechanical and chemical properties, the use of plastics is widespread in our lives. The use and production of plastics is increasing year by year, but so is the problem of disposing of plastic waste. In the environment, under the influence of natural forces, plastic waste is fragmented into smaller particles up to 5 mm in size, which I call microplastics. In this work, the removal of model microplastics, i.e., particles of poly(ethylene terephthalate) and polypropylene, from an aqueous medium was investigated using two comparative methods: oxidation/coagulation with ferrate (VI) and the Fenton process. The samples were characterized using Fourier transform infrared spectroscopy (FTIR) to determine chemical changes in the samples. Based on the obtained results, degradation of polypropylene samples was identified due to the formation of double bonds in polypropylene. However, for poly(ethylene terephthalate) FTIR doesn’t reveal significant changes.

• Keywords: mikroplastika; UV starenje; ferati (VI); Fentonov proces; PP; PET
• Keywords (english): microplastics; UV aging; ferrate (VI); Fenton process; PP; PET
• Language: croatian
• URN:NBN: urn:nbn:hr:149:546666
• Study programme: Title: Environmental Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2025-06-01
• Created on: 2023-07-25 14:37:53