Određivanje koncentracije iona teških metala elektrokemijskim metodama

Krišto, Nikolina

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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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APA 6th Edition

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

MLA 8th Edition

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

Chicago 17th Edition

Harvard

Krišto, N. (2021). 'Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 17 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:177760

Vancouver

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 November 17] Available at: https://urn.nsk.hr/urn:nbn:hr:167:177760

IEEE

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

Cite this item: https://urn.nsk.hr/urn:nbn:hr:167:177760

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Title	Određivanje koncentracije iona teških metala elektrokemijskim metodama : završni rad
Title (english)	Determination of heavy metal ion concentration by electrochemical methods : bachelor thesis
Author	Nikolina Krišto
Mentor	Senka Gudić (mentor)
Committee member	Ladislav Vrsalović (predsjednik povjerenstva)
Committee member	Nediljka Vukojević-Medvidović (član povjerenstva)
Committee member	Senka Gudić (član povjerenstva)
Granter	University of Split Faculty of Chemistry and Technology (Division of Engineering and Chemistry) Split
Defense date and country	2021-07-21, 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)
Language	croatian
URN:NBN	urn:nbn:hr:167:177760
Study programme	Title: 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 resource	Text
File origin	Born digital
Access conditions	Open access
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Created on	2021-12-06 09:29:27