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master's thesis
Izolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. urn:nbn:hr:149:845317
Žuteg, Barbara
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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Žuteg, B. (2015). Izolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:845317

Žuteg, Barbara. "Izolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:845317

Žuteg, Barbara. "Izolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:845317

Žuteg, B. (2015). 'Izolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 29 March 2025, https://urn.nsk.hr/urn:nbn:hr:149:845317

Žuteg B. Izolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2015 [cited 2025 March 29] Available at: https://urn.nsk.hr/urn:nbn:hr:149:845317

B. Žuteg, "Izolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:149:845317

Metadata
TitleIzolacija tankih poliamidnih filmova s kompozitnih reverzno osmotskih membrana i njihova karakterizacija
Title (english)Isolation of thin film polyamides from RO composite membranes and their characterization
AuthorBarbara Žuteg
MentorKrešimir Košutić (mentor)
Committee memberKrešimir Košutić (predsjednik povjerenstva)
Committee memberMarica Ivanković (član povjerenstva)
Committee memberJuraj Šipušić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2015-09-24, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Physical Chemistry
Abstract
Poliamidne kompozitne membrane su industrijski najprimjenljiviji tip reverzno osmotskih (RO) i nanofiltracijskih (NF) membrana. Mogućnost nezavisnog utjecaja na karakteristike potpornog sloja i tankog filma dopušta optimizaciju cjelokupne strukture kompozitne membrane, te njezinih karakteristika: propusnosti, selektivnosti i stabilnosti. Kao rezultat, kompozitne RO i NF membrane se obično primjenjuju u pročišćavanju vode kao što su dobivanje pitke vode desalinacijom bočate i morske vode,... More mekšanje vode, uklanjanje organskih tvari, proizvodnja ultračiste vode, te u naprednim obradama otpadnih voda. Fizikalno kemijska svojstva poliamidnih (PA) RO i NF membrana su uveliko određena strukturom PA i premazivanjem, ako je potrebno. U naprednoj membranskoj tehnologiji proučavanje takvog nerazdvojnog odnosa je neupitno. Otkriveno je da su površinska (hrapavost, hidrofilnost, površinski naboj) i osnovna svojstva (propusnost i uklanjanje) u velikoj mjeri međusobno povezana. Tijekom prošlog desetljeća intenzivno i kontinuirano se radilo na pripravi i razvoju tankoslojnih kompozitnih membrana (TFC) s ciljem daljnjeg poboljšanja produktivnosti i selektivnosti membrana kao i tolerantnosti na klor i organska otapala, blokiranje itd. Napredak u karakterizaciji PA tankog filma je primarno otežan zbog poteškoća odvojenog ispitivanja tankih filmova (odvojenih od polisulfonske potpore). Cilj ovog rada je bio pronaći odgovarajuće organsko otapalo za izoliranje aktivnog poliamidnog sloja nekih komercijalnih RO i NF membrana. RO i NF kompozitne membrane korištene u ovom radu bile su: SWC4+, XLE, ESPA i NF90. Ovaj rad prikazuje svojstva poliamidnog aktivnog sloja koristeći pretražni elektronski mikroskop (SEM). Nadalje, kako bi se dobile informacije o površini aktivnog sloja i selektivnosti mjeren je protok permeata, J i izračunat koeficijent permeabilnosti, Lp. Less
Abstract (english)
Polyamide (PA) composite membranes are the most popular commercial form of reverse osmosis (RO) and nanofiltration (NF) membranes. The ability to independently tailor support layer and thin film characteristics permitted optimization of the overall composite membrane structure, permeability, selectivity, and stability over the past three decades. As a result, composite RO and NF membranes are now commonly employed in water purification applications such as desalination of brackish and... More sea water, fresh water softening and organic removal, ultrapure water production, and advanced wastewater purification. The physiochemical properties of RO and NF PA membranes are largely determined by their PA chemistry and coatings, if any. Knowledge on such inherent relationship is critically needed in advancing membrane technology. The surface properties (roughness, hydrophilicity, and surface charge) and transport properties (permeability and rejection) are found to be highly inter-dependent. Over the past decade, there have been intensive and continuous efforts in the development of TFC membrane, both from the industry and academia with the interests to further improve the membrane productivity and selectivity as well as its tolerance against chlorine, solvent, fouling, etc. Advances in the characterization of polyamide thin films have been primarily hampered by the difficulty of inspecting thin films in isolation (i.e., separated from the polysulfone support). The objective of this study was to find suitable organic solution for isolating active polyamide layer of some commercial reverse osmosis (RO) and nanofiltration (NF) membranes. RO and NF composite polyamide membranes used in this study were: SWC4+, XLE, ESPA and NF90. This study reports on scanning electron microscopy (SEM) techniques for characterizing polyamide active layer. Furthermore, to provide more information about active layer surface and selectivity, permeate flux, J was measured and water permeabillity, Lp was calculated. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:845317
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-03-13 14:17:03
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