Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona

Plavčić, Marija

prikaz prve stranice dokumenta Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona

undergraduate thesis

Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona

završni rad

Split: University of Split, Faculty of Chemistry and Technology, 2017. urn:nbn:hr:167:874954

Plavčić, Marija

University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Cite this document

APA 6th Edition

Plavčić, M. (2017). Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:874954

MLA 8th Edition

Plavčić, Marija. "Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:167:874954

Chicago 17th Edition

Harvard

Plavčić, M. (2017). 'Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 23 April 2024, https://urn.nsk.hr/urn:nbn:hr:167:874954

Vancouver

Plavčić M. Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2017 [cited 2024 April 23] Available at: https://urn.nsk.hr/urn:nbn:hr:167:874954

IEEE

M. Plavčić, "Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:167:874954

Cite this item: https://urn.nsk.hr/urn:nbn:hr:167:874954

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Metadata

Title	Određivanje optimalnog vremena za postizanje prihvatljive koncentracije koloidnog srebra pomoću generatora niskog napona : završni rad
Title (english)	Assessment of optimal time needed for achieving sufficient concentration of colloidal silver using low voltage generator : bachelor thesis
Author	Marija Plavčić
Mentor	Pero Dabić (mentor)
Committee member	Ladislav Vrsalović (predsjednik povjerenstva)
Committee member	Damir Barbir (član povjerenstva)
Committee member	Pero Dabić (član povjerenstva)
Granter	University of Split Faculty of Chemistry and Technology (Division of Engineering and Chemistry) Split
Defense date and country	2017-12-14, Croatia
Scientific / art field, discipline and subdiscipline	TECHNICAL SCIENCES Chemical Engineering
Abstract	U radu su određivani optimalni parametri elektrolitičke sinteze koloidnog srebra prihvatljive koncentracije uz različito vrijeme trajanja procesa, pomoću generatora niskog napona istosmjerne struje, (eng. Low Voltage Direct Current, LVDC). Generator koloidnog srebra ima mogućnost održavanja konstantne jakosti struje te je potrebno odrediti najpovoljniju jakost struje za korištene srebrne elektrode, a da se zadovolji potrebna gustoća struje pri kojoj se može dobiti koloidno srebro koncentracije 20-30 ppm-a u vremenu do dva sata. Pri provođenju sinteze svakih 5 minuta bilježene su vrijednosti TDS-a, specifične električne provodnosti i temperature pomoću digitalnog umjerenog uređaja HANA-EDGE. Propuštanjem laserske zrake kroz ćeliju pratila se pojava Tyndallovog efekta, bilježeno je vrijeme pojave te intenzitet Tyndallovog efekta. Pri upotrebi ultračiste vode nisu dobivene potrebne koncentracije koloidnog srebra za zadano vrijeme, a dodatkom nekoliko ppm-a NaCl tražene koncentracije koloidnog srebra postignute su nakon 45 minuta provedbe procesa.
Abstract (english)	Aim of this thesis was to determine optimal parameters for electrolytical synthesis of colloidal silver with sufficient concentration by varying duration of process, using low voltage direct current (LVDC) generator. Colloidal silver generator has ability of maintaining constant power of the electric current, and it is necessary to determine optimal value of power of the electric current for used silver electrodes, in order to meet the requiered electric current density at which it is possible to produce colloidal silver of 20-30 ppm concentration within two hours. While conducting the synthesis values of TDS, specific electrical conductivity and temperature are recorded every 5 minutes using calibrated digital device HANA-EDGE. Apearance of Tyndall's effect was being tracked by directing laser beam through electrolytic cell, and time of appearance and intensity are being recorded. With use of ultra pure water required concentrations were not gained in the default time, and by adding a few ppm of NaCl required concentrations were accomplished within 45 minutes of process.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:167:874954
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
Terms of use
Public note	Ključne riječi doradio knjižničar/ Key words are revised by the librarian
Repository	Repository of the Faculty of chemistry and technology
Created on	2018-03-08 11:39:54

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