prikaz prve stranice dokumenta Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom
Embargo period 2025-12-01
master's thesis
Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom
diplomski rad
Split: University of Split, Faculty of Chemistry and Technology, 2023. urn:nbn:hr:167:977524
Krišto, Nikolina
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Institutional repository: Repository of the Faculty of chemistry and technology

Cite this document

Krišto, N. (2023). Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:977524

Krišto, Nikolina. "Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:167:977524

Krišto, Nikolina. "Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:167:977524

Krišto, N. (2023). 'Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 29 May 2024, https://urn.nsk.hr/urn:nbn:hr:167:977524

Krišto N. Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2023 [cited 2024 May 29] Available at: https://urn.nsk.hr/urn:nbn:hr:167:977524

N. Krišto, "Uklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:167:977524

Metadata
TitleUklanjanje boje Sunset Yelow iz vodene otopine elektrokoagulacijom : diplomski rad
Title (english)Sunset Yellow colour removal from aqueous solution by electrocoagulation : diploma 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 country2023-10-20, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Promatrana je učinkovitost uklanjanja boje Sunset Yellow (SY) iz vodene otopine procesom elektrokoagulacije (EK) pri različitim gustoćama struje (0.004, 0.008, 0.016 i 0.024 A/cm 2 ), početnim pH (3.2, 5.5, 7.0) te brzinama vrtnje miješala (100, 200 i 300 okr/min). Tijekom EK procesa, uočene su promjene pH, temperature, električne provodnosti te koncentracije SY boje. Općenito gledajući, učinkovitost uklanjanja SY boje je izuzetno dobra te kod svih eksperimentalnih uvjeta raste i postiže određenu maksimalnu vrijednost. Gustoća struje od 0.024 A/cm 2 , početna pH od 3.2 te brzina vrtnje miješala od 200 okr/min pokazali su se kao optimalni uvjeti u postupku uklanjanja SY boje. Tijekom EK procesa dolazi do potrošnje anodnog, ali i katodnog materijala. Potrošnja anoda je znatno veća od potrošnje katoda, a ta razlika se naročito povećava s porastom gustoće struje. Porastom brzine miješanja smanjuje se brzina otapanja katoda. Izgled anoda nakon EK procesa ukazuje na dominantni utjecaj dvaju oblika korozije: opće (pri nižim strujama, pH vrijednostima i brzinama miješanja) i interkristalne korozije (pri višim strujama). S druge strane, katode kod svih eksperimentalnih uvjeta korodiraju interkristalno.
Abstract (english)
The efficiency of Sunset Yellow (SY) dye removal from aqueous solution by electrocoagulation (EC) was observed at different current densities (0.004, 0.008, 0.016, and 0.024 A/cm 2 ), initial pH (3.2, 5.5, 7.0), and stirring speeds (100, 200, and 300 rpm). Changes in pH, temperature, electrical conductivity, and SY dye concentration were observed during the EC process. In general, the efficiency of SY dye removal is very good and increases under all experimental conditions, reaching a certain maximum value. The current density of 0.024 A/cm 2 , the initial pH of 3.2, and the stirring speed of 200 rpm were found to be optimal conditions for the process of SY dye removal. During the EC process, anodic and cathodic material is consumed. The anodic consumption is significantly higher than the cathodic consumption, and this difference increases especially with increasing current density. As the mixing rate increases, the dissolution rate of the cathode decreases. The appearance of the anodes after the EC process indicates the dominant influence of two forms of corrosion: general corrosion (at lower currents, pH values, and mixing rates) and intergranular corrosion (at higher currents). On the other hand, the cathodes corrode intercrystalline under all experimental conditions.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:977524
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures, Materials and Environmental protection
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 conditionsEmbargoed access
Embargo expiration date: 2025-12-01
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Created on2023-12-01 08:43:07