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master's thesis
Utjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode
Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry, 2020. urn:nbn:hr:163:798862
Tomurad, Tomislav
University of Zagreb
Faculty of Pharmacy and Biochemistry
Department of general and inorganic chemistry

Institutional repository: Repository of Faculty of Pharmacy and Biochemistry University of Zagreb

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Tomurad, T. (2020). Utjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode (Master's thesis). Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:163:798862

Tomurad, Tomislav. "Utjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:163:798862

Tomurad, Tomislav. "Utjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode." Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:163:798862

Tomurad, T. (2020). 'Utjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode', Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, accessed 03 January 2025, https://urn.nsk.hr/urn:nbn:hr:163:798862

Tomurad T. Utjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode [Master's thesis]. Zagreb: University of Zagreb, Faculty of Pharmacy and Biochemistry; 2020 [cited 2025 January 03] Available at: https://urn.nsk.hr/urn:nbn:hr:163:798862

T. Tomurad, "Utjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode", Master's thesis, University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:163:798862

Metadata
TitleUtjecaj koncentracije otopina natrijevog klorida na eluiranje dominantnih kationa iz umjetne morske vode
Title (english)Effect of sodium chloride solutions on the elution of major cations from artificial sea water
AuthorTomislav Tomurad
MentorTin Weitner (mentor)
Committee memberTin Weitner (predsjednik povjerenstva)
Committee memberMario Gabričević (član povjerenstva)
Committee memberDavor Šakić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Pharmacy and Biochemistry
(Department of general and inorganic chemistry)
Zagreb
Defense date and country2020-07-01, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Inorganic Chemistry
Abstract
Desalinizacija vode predstavlja veliku dobit za društvo iskorištavanjem postojeće nepitke vode, no ograničena je primarno zbog enormnih troškova novca i električne energije. Predtretiranje ulazne vode, uveliko utječe na kvalitetu same desalinizacije te pozitivno utječe na uloženi kapital i dobivenu efektivnost. Jedan od glavnih razloga predtretiranja ulazne vode jest mineralizacija teško topljivih soli magnezija, kalcija i stroncija čime se blokiraju membranske pore korištene za daljnju reverznu osmozu. Blokiranjem pora smanjuje se efektivnost membrane te ima negativni učinak na dugovječnost iste što rezultira većim troškovima i manjom efikasnošću. Ovim radom htjelo se utvrditi efektivnost uklanjanja dijela kationa iz ulazne vode na laboratorijskoj razini čime bi se simuliralo predtretiranje ulazne vode na industrijskoj razini. Mjerene su koncentracije magnezija, kalcija i kalija u frakcijama dobivenim eluiranjem kolone simuliranom ulaznom vodom te potom otopinom natrijevog klorida. Provedenim mjerenjima te usporedbom postotaka adsorbiranih kationa dokazano je da fosfatna ionsko-izmjenjivačka smola (K2) ima veći afinitet za katione magnezija, a manji afinitet za katione kalija i kalcija od karbonatna ionsko-izmjenjivačke smole (K1). Također, usporedbom postotaka otpuštanja kationa dokazano je da je 4.5M natrijev klorid kao eluens pogodniji za uklanjanje kationa kalija, dok je 5.5M natrijev klorid efikasniji kao eluens za uklanjanje kationa magnezija i kalcija.
Abstract (english)
Water desalination is a huge benefit by using existing non-potable water, but it is limited primarily due to the enormous cost of money and electricity. The pretreatment of the feed water greatly affects the quality of the desalination itself and has a positive effect on the invested capital and the obtained efficiency. One of the main reasons for pretreatment of feed water is the mineralization of sparingly soluble salts of magnesium, calcium and strontium thus blocking the membrane pores used for further reverse osmosis. Blocking the pores reduces the effectiveness of the membrane and has a negative effect on its longevity, which results in higher costs and lower efficiency. This paper sought to determine the effectiveness of removing part of the cation from the feed water at laboratory level, which would simulate the pretreatment of the inlet water at the industrial level. The concentrations of magnesium, calcium and potassium in the fractions obtained by elution of the column with simulated feed water and then with sodium chloride solution were measured. Measurements and comparison of the percentages of adsorbed cations showed that phosphate based ion-exchange resin (K2) has a higher affinity for magnesium cations and a lower affinity for potassium and calcium cations than carbonate based ion-exchange resin (K1). Also, by comparing the cation release percentages, 4.5M sodium chloride as eluent was shown to be more suitable for removing potassium cations, while 5.5M sodium chloride was more effective as eluent for removing magnesium and calcium cations.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:163:798862
Study programmeTitle: Pharmacy
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra farmacije (magistar/magistra farmacije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-08-29 08:51:24