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master's thesis
Inhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta
diplomski rad
2019. urn:nbn:hr:167:623680
Drventić, Ivana
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Drventić, I. (2019). Inhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:623680

Drventić, Ivana. "Inhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:167:623680

Drventić, Ivana. "Inhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:167:623680

Drventić, I. (2019). 'Inhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 17 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:623680

Drventić I. Inhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2019 [cited 2024 November 17] Available at: https://urn.nsk.hr/urn:nbn:hr:167:623680

I. Drventić, "Inhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:167:623680

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Metadata
TitleInhibicija korozije bakra uporabom Padina pavonica (Linnaeus) Thivy ekstrakta : diplomski rad
Title (english)Corrosion inhibitition of coper by Padina pavonica (Linnaeus) Thivy extract : diploma thesis
AuthorIvana Drventić
MentorIvana Smoljko (mentor)
MBZ: 267183
Committee memberLadislav Vrsalović (predsjednik povjerenstva)
Committee memberSanja Perinović Jozić (član povjerenstva)
Committee memberIvana Smoljko (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2019-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu ispitano je djelovanje 75 %-tnog etanolno - vodenog eksrakta smeđe alge Padina pavonica (u volumenskim koncentracijama 0,2 % , 0,8 %, 1,4 % i 2,0 % ) kao inhibitora korozije bakra u 0,5 mol dm -3 otopini NaCl. Pri istraživanju su korištene elektrokemijske metode: potencijal otvorenog kruga, metoda linearne polarizacije i metoda potenciodinamičke polarizacije. Nakon provedenih polarizacijskih mjerenja napravljena je analiza površine uzoraka pretražnim elektronskim mikroskopom čime su potvrđeni rezultati dobiveni elektrokemijskim mjerenjima. Za najbolju volumensku koncentraciju inhibitora, 1,4 % (koja je određena u ovom radu) ispitana je korozija u temperaturnom području od 273 do 303 K. Korištenjem adsorpcijskih izotermi (Freundlichove i Frumkinove) određen je mehanizam adsorpcije inhibitora na površinu bakra, tj. rezultati potvrđuju da se radi o fizisorpciji.
Abstract (english)
This paper aims to study the inhibition effect of aqueous ethanol 75 % extract of brown algae Padina pavonica (in 0.2 %, 0.8 %, 1.4 % and 2.0 % (v/v) concentration) on corrosion of copper in the 0.5 mol dm –3 NaCl solution by electrochemical techniques such as open circuit potential, linear polarization, and potentiodynamic polarization technique. Additionally, a characterization of the metal surface with scanning electron microscope (SEM). The data demonstrated that the highest protection was obtained at the algae extract concentration of 1.4 % v/v. The SEM analysis gave very good support to the electrochemical data. Also, the temperature influence was studied in the range 283 – 303 K. The adsorption of Padina Pavonica on copper surface was in accordance with the Freundlich and Frumkin adsorption isotherms. Results confirm physical adsorption of this inhibitor on the copper.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:623680
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: 2021-09-27
Terms of useLicence In copyright icon
Created on2019-11-29 12:39:24