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undergraduate thesis
Određivanje koncentracije iona teških metala elektrokemijskim metodama
završni rad
2021. urn:nbn:hr:167:177760
Krišto, Nikolina
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Krišto, N. (2021). Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:177760

Krišto, Nikolina. "Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:177760

Krišto, Nikolina. "Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:177760

Krišto, N. (2021). 'Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 18 April 2024, https://urn.nsk.hr/urn:nbn:hr:167:177760

Krišto N. Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2021 [cited 2024 April 18] Available at: https://urn.nsk.hr/urn:nbn:hr:167:177760

N. Krišto, "Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:167:177760

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Metadata
TitleOdređivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad
Title (english)Determination of heavy metal ion concentration by electrochemical methods : bachelor thesis
AuthorNikolina Krišto
MentorSenka Gudić (mentor)
Committee memberLadislav Vrsalović (predsjednik povjerenstva)
Committee memberNediljka Vukojević-Medvidović (član povjerenstva)
Committee memberSenka Gudić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2021-07-21, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu je ispitana mogućnost uklanjanja Cu 2+ iona iz vodene otopine CuSO 4 ×5H 2 O elektrokemijskim putem tj. procesom elektrotaloženja na elektrodi od Pt. Svrha mjerenja je bila snimanjem potenciodinamičkih polarizacijskih krivulja (i-E ovisnosti) u otopinama poznatih koncentracija (c = 1.0, 2.5, 5.0, 7.5 i 10 mM) te očitavanjem graničnih difuzijskih struja (i d ) odrediti nepoznatu koncentraciju Cu 2+ iona u CuSO 4 ×5H 2 O otopini. i-E ovisnosti su snimane u području potencijala od potencijala otvorenog strujnog kruga do –3.0 V uz različite brzine promjene potencijala (1, 5, 10, 20 i 50 mV/s). Kod većih koncentracija Cu 2+ iona, na površini Pt elektrode se taloži deblji sloj crvenkasto-smeđe prevlake bakra. Nadalje, granična difuzijska struja, i d , raste linearno s porastom koncentracije Cu 2+ iona u otopini elektrolita. Konstruiran je dijagram i d = f(c) te su određene nepoznate koncentracije Cu 2+ iona u tri nasumično pripremljene CuSO 4 ×5H 2 O otopine. Ustanovljeno je da se elektrokemijskim putem uspješno mogu ukliniti Cu 2+ ioni iz vodenih otopina te odrediti njihova koncentracija
Abstract (english)
In this paper, the possibility of removing heavy metal ions, specifically Cu 2+ ions from an aqueous solution of CuSO 4 ×5H 2 O by electrochemical means (i.e. electrodeposition on the Pt electrode), was investigated. The purpose of the measurement was to determine the unknown concentration of Cu 2+ ions in CuSO 4 ×5H 2 O solution by recording potentiodynamic polarization curves (i-E dependences) in solutions of known concentrations (c = 1.0, 2.5, 5.0, 7.5 and 10 mM) and reading the limiting diffusion currents (i d ). i-E dependences were recorded in the potential range from the open circuit potential to –3.0 V at different scan rates (1, 5, 10, 20 and 50 mV/s). At higher concentrations of Cu 2+ ions, a thicker layer of copper coating is deposited on the Pt electrode surface. Furthermore, the limiting diffusion current, i d , increases linearly with increasing concentration of Cu 2+ ions in the electrolyte solution. A diagram i d = f(c) was constructed and unknown concentrations of Cu 2+ ions in three CuSO 4 ×5H 2 O solutions were determined. Heavy metal ions can be successfully electrochemically removed from polluted waters and their concentration can be determined.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:177760
Study programmeTitle: Chemical Technology; specializations in: Chemical Engineering, Environmental Protection
Course: Chemical Engineering
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
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Created on2021-12-06 09:29:27