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master's thesis
Određivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru
diplomski rad
Split: University of Split, Faculty of Chemistry and Technology, 2018. urn:nbn:hr:167:532956
Koštroman, Anita
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Institutional repository: Repository of the Faculty of chemistry and technology

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Koštroman, A. (2018). Određivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:532956

Koštroman, Anita. "Određivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:532956

Koštroman, Anita. "Određivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:532956

Koštroman, A. (2018). 'Određivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:532956

Koštroman A. Određivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2018 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:167:532956

A. Koštroman, "Određivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:167:532956

Metadata
TitleOdređivanje širine metastabilne zone boraksa različitim metodama u šaržnom kristalizatoru : diplomski rad
Title (english)Determination of metastable zone width of borax in a batch cooling crystallizer using different techniques : diploma thesis
AuthorAnita Koštroman
MentorNenad Kuzmanić (mentor)
MBZ: 120556
Committee memberLadislav Vrsalović (predsjednik povjerenstva)
Committee memberMarija Ćosić (član povjerenstva)
Committee memberNenad Kuzmanić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2018-10-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu provedena je kristalizacija dinatrijevog tetraborata dekahidrata (boraksa) šaržnim postupkom uz kontinuirano hlađenje matične otopine. Cilj rada je bio odrediti širinu metastabilne zone boraksa različitim metodama: vizualnom, potenciometrijskom i turbidimetrijskom, te ispitati mogućnost njihove primjene i njihovu osjetljivost pri provedbi šaržne kristalizacije. Radi što potpunije usporedbe primijenjenih metoda, određivanje navedenog kristalizacijskog parametra, kao i brzine nukleacije, izvodilo se pri pet različitih temperatura zasićenja matične otopine boraksa. Ispitivanja su se provodila u kristalizatoru laboratorijskog mjerila volumena 2.14 dm 3 u kojem se matična otopina hladila brzinom od 6 °C/h. Analizom dobivenih rezultata uviđa se da sve primijenjene metode omogućuju određivanje početka nukleacije boraksa u navedenom procesu. Najosjetljivijom se ipak pokazala turbidimetrijska metoda pogotovo pri nižim temperaturama zasićenja matične otopine. Ta metoda je pokazala izrazitu osjetljivost i visoku reproducibilnost rezultata, a mogućnost njene primjene u pogonskim uvjetima daje joj dodatnu prednost u odnosu na ostale korištene tehnike.
Abstract (english)
In this research the batch cooling crystallization of the disodium tetraborate decahydrate (borax) was performed and analysed. The aim of the work was to determine the metastable zone width of borax by different techniques: visual, potentiometric and turbidimetric with the purpose of examine the possibility of their application and analyse their sensitivity. For the fullest comparison of the applied methods, the experiments were performed at five different saturation temperatures of the borax mother liquor. All experiments were carried out in the stirred batch cooling crystallizer with the volume of 2.14 dm 3 . In all experiments the mother liquor, that is the saturated solutions were cooled down at constant rate of 6 °C/h. Experimental results have shown that the onset of nucleation, that is the metastable zone width of borax in the process of batch cooling crystallization can be determined by all applied techniques. Turbidimetric method has been shown as the most sensitive, especially at lower saturation temperature of the mother liquor.This method can be considered as very objective and the reproducibility of its the results is extremely high. Possibility of its application in industrial and/or semi-industrial operating conditions gives it an additional advantage over the other applied techniques.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:532956
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures
Course: Materials
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2020-10-26
Terms of useLicence In copyright icon
Public noteKljučne riječi doradio knjižničar/ Key words are revised by the librarian
Created on2018-11-26 10:16:01