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master's thesis
Utjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX
diplomski rad
2017. urn:nbn:hr:167:792286
Knežević, Lucija
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Knežević, L. (2017). Utjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:792286

Knežević, Lucija. "Utjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:167:792286

Knežević, Lucija. "Utjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:167:792286

Knežević, L. (2017). 'Utjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 19 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:792286

Knežević L. Utjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2017 [cited 2024 November 19] Available at: https://urn.nsk.hr/urn:nbn:hr:167:792286

L. Knežević, "Utjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:167:792286

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Metadata
TitleUtjecaj veličine miješala na kinetiku ionske izmjene bakra na zeolitu NaX : diplomski rad
Title (english)Effect of impeller size on the kinetics of copper exchange onto zeolite NaX : diploma thesis
AuthorLucija Knežević
MentorSandra Svilović (mentor)
Committee memberMarija Ćosić (predsjednik povjerenstva)
Committee memberMario Nikola Mužek (član povjerenstva)
Committee memberSandra Svilović (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2017-10-31, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Utjecaj hidrodinamičkih uvjeta unutar reaktorskog sustava na kinetiku ionske izmjene u šaržnom reaktoru, još nije dovoljno istražen unatoč činjenici da parametri miješanja mogu značajno utjecati na postupak suspendiranja čvrstih čestica te utjecati na debljinu difuzijskog sloja oko čestice, odgovornog za brzinu međufazne difuzije. Zbog navedenog, analiziran je utjecaj hidrodinamičkih uvjeta, koristeći različite promjere miješala, na maksimalnu količinu izmijenjenog bakra na zeolit NaX te kinetiku ionske izmjene. Otopina koja sadržava Cu 2+ ione, pripremljena je otapanjem odgovarajuće mase Cu(NO 3 ) 2 ·3H 2 O. Zeolit NaX je samljeven i prosijan, kako bi čestice bile unutar veličinske klase, od 0,071 do 0,09 mm. Miješanje je izvedeno koristeći turbinsko miješalo s 4 ravne lopatice (tzv. 4-SBT). Kako bi se sagledao utjecaj veličine miješala na ispitivani proces, tijekom rada korištena su tri različita promjera SBT miješala pri čemu je omjer miješala i posude (D/T) bio u vrijednostima od 0,46 do 0,68. Kinetički eksperimenti su izvedeni pri brzini vrtnje miješala pri kojoj je postignuta potpuna suspenzija zeolita pri svim ispitivanim masenim koncentracijama zeolita, dok je temperatura otopine održavana stalnom. Dobiveni eksperimentalni kinetički podaci su analizirani koristeći Lagregrenovu jednadžbu pseudo-prvog reda, Elovichev i Ritchiev model. Kinetički rezultati ukazuju da se količina sorbiranih bakrovih iona na zeolitu naglo povećava s vremenom u početnoj fazi procesa a zatim postepeno raste do postizanja ravnotežnog stanja za sve ispitivane hidrodinamičke uvjete.
Abstract (english)
Effect of hydrodynamics on ion exchange kinetics in a batch reactor is still not properly studied despite the fact that proper mixing parameters may considerably improve the process of solid suspension and influence the hydrodynamic layer thickness responsible for the mass rate transfer. For this reason the aim of this work was to analyse the influence of hydrodynamic conditions generated by different impeller diameters on the maximum amount of copper exchange onto zeolite NaX and exchange kinetics as well. Solution containing Cu 2+ was prepared by dissolving the appropriate weight of Cu(NO 3 ) 2 ∙3H 2 O. Zeolite NaX was crushed and sieved to obtain particles in the range from 0,071 – 0,09 mm. Mixing was conducted using straight blade turbine (4-SBT) where impeller to tank diameter ratio (D/T) were varied in the range from 0,46 to 0,68. Kinetics experiments were carried out at just suspended impeller speed (N JS ) for all impellers and solid/liquid ratios used, while solution temperature was kept constant. Obtained experimental kinetics data were fitted using Lagergrenov equation, Elovichev and Ritchiev model. Kinetics results indicated that amount of copper ion sorbed increases sharply with the time in the initial stage and then gradually until the equilibrium is reached for all hydrodynamics conditions examined.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:792286
ProjectNumber: IP-2013-11-8959
Title: Utjecaj procesnih parametara na kinetiku heterogenih sustava koji se odvijaju u šaržnom reaktoru s miješanjem
Acronym: HETMIX
Leader: Nenad Kuzmanić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
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
Terms of useLicence In copyright icon
Public noteKljučne riječi doradio knjižničar/ Key words are revised by the librarian
Created on2018-04-06 10:52:42