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undergraduate thesis
Karakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. urn:nbn:hr:149:806660
Horvat, Josip
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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Horvat, J. (2022). Karakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:806660

Horvat, Josip. "Karakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:806660

Horvat, Josip. "Karakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:806660

Horvat, J. (2022). 'Karakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:806660

Horvat J. Karakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2022 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:149:806660

J. Horvat, "Karakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:149:806660

Metadata
TitleKarakterizacija ultrafiltracijskih membrana prije i nakon obrade tekstilne otpadne vode
Title (english)Characterization of ultrafiltration membranes before and after textile wastewater treatment
AuthorJosip Horvat
MentorDavor Dolar (mentor)
Committee memberDavor Dolar (predsjednik povjerenstva)
Committee memberMiroslav Jerković (član povjerenstva)
Committee memberLidija Furač (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2022-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovome radu napravljena je karakterizacija četiri ultrafiltracijske (UF) membrane (GH, GK, PT i PU) granične molekulske mase (eng. Molecular weight cut-off, MWCO) 2, 3, 5 i 10 kDa prije i nakon obrade tekstilnom otpadnom vodom (TOV). Određeni su zeta potencijali, hidrofobnost/hidrofilnost, hrapavost površine, spektri valnih duljina infracrvenim spektrofotometrom s Fourierovom transformacijom (FTIR) i površinski morfološki prikazi pomoću mikroskopije atomskim sila (AFM). Dobivenim mjerenjima utvrđene su promjene na membranama nakon obrade TOV-e. Nakon obrade TOV-e kod UF membrana, posebice GK, PT i PU, došlo je do smanjenja zeta potencijala zbog pojačanih elektrostatskih interakcija dok je kod GH membrane uočeno povećanje zeta potencijala. Također je pokazano AFM-om da su sve ispitivane membrane homogene. Na svim membranama nakon obrade TOV-e pokazuje se povećanje hrapavosti površine. FTIR spektrima utvrdilo se stvaranje novih pikova na svim membranama što potvrđuje adsorpciju otopljenih tvari na površini membrana. Kontaktni kutovi novih nekorištenih membrana pokazali su hidrofilnost površine. Nakon obrade TOV-e, membrane pokazuju povećanje kontaktnog kuta, a samim time i blago povećanu hidrofobnost površina.
Abstract (english)
In this research, the characterization of four ultrafiltration (UF) membranes (GH, GK, PT, PU) with molecular weight cut-off (MWCO) values 2, 3, 5, and 10 kDa were investigated before and after treatment with textile wastewater (TWW). Zeta potential, hydrophobicity/hydrophilicity, surface roughness, wavelength spectra by Fourier transform infrared spectrophotometer (FTIR), and surface morphology images by atomic force microscopy (AFM) were determined. The obtained measurements determined the changes in the membranes after TWW treatment. After the treatment of TWW with UF membranes, especially GK, PT, and PU, there was a decrease in the zeta potential due to enhanced electrostatic interactions, while an increase in the zeta potential was observed with the GH membrane. It was also shown by AFM that all investigated membranes are homogeneous. All membranes show an increase in surface roughness after TWW treatment. FTIR spectra revealed the formation of new peaks on all membranes, which confirms the adsorption of dissolved solutes on the surface of the membranes. The contact angles of the new unused membranes showed the hydrophilicity of the surface. After TWW treatment, the membranes show an increase in the contact angle, and thus a slightly increased hydrophobicity of the surfaces.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:806660
Study programmeTitle: Chemical Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2023-02-24 09:15:47