Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije

Đunđuš, Tatjana

prikaz prve stranice dokumenta Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije

Access restricted to students and staff of home institution

master's thesis

Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije

Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2010. urn:nbn:hr:159:487624

Đunđuš, Tatjana

University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Process Engineering
Laboratory for Unit Operations

Request a copy
of the document

Cite this document

APA 6th Edition

Đunđuš, T. (2010). Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:487624

MLA 8th Edition

Đunđuš, Tatjana. "Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2010. https://urn.nsk.hr/urn:nbn:hr:159:487624

Chicago 17th Edition

Harvard

Đunđuš, T. (2010). 'Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 16 April 2024, https://urn.nsk.hr/urn:nbn:hr:159:487624

Vancouver

Đunđuš T. Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2010 [cited 2024 April 16] Available at: https://urn.nsk.hr/urn:nbn:hr:159:487624

IEEE

T. Đunđuš, "Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2010. Available at: https://urn.nsk.hr/urn:nbn:hr:159:487624

Cite this item: https://urn.nsk.hr/urn:nbn:hr:159:487624

Please login to the repository to save this object to your list.

Metadata

Title	Utjecaj djelovanja ultrazvuka visokog intenziteta na određivanje veličine čestica metodom laserske difrakcije
Title (english)	Effect of high intensity ultrasound on the determination of particle size by laser diffraction method
Author	Tatjana Đunđuš
Mentor	Mladen Brnĉić (mentor)
Granter	University of Zagreb Faculty of Food Technology and Biotechnology (Department of Process Engineering) (Laboratory for Unit Operations) Zagreb
Defense date and country	2010-10-12, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Biotechnology
Abstract	Rad je temeljen na ispitivanju metode određivanja raspodjele veličina čestica sulfizoksazol acetila laserskom difrakcijom, u svrhu osiguranja kvalitete. Ispitano je djelovanje ultrazvuka od 10 %, 25 %, 50 %, 75 % i 100 % pri brzinama miješanja od 2000 o/min i 2500 o/min. Snaga ultrazvuka 100 % iznosi 26 W, tako da je ispitano djelovanje pri 2.6 W, 6.5 W, 13 W, 19.5 W i 26 W. Provedena su mjerenja prije djelovanja ultrazvuka (nakon dodatka uzorka u kupelj disperzione jedinice Hydro 2000 S) i za vrijeme djelovanja ultrazvuka. Malvern Mastersizer instrumenti imaju sve potrebne opcije mjerenja i dijagnoze koji podupiru sve standarde dobre proizvođačke prakse. Validirana je standardna procedura analize raspodjele veličina čestica na instrumentu Malvern Mastersizer 2000. Pokazalo se da je ultrazvuk poboljšao ujednačenost raspodjele veličine čestica. Najbolji rezultati postignuti su kod nominalne snage ultrazvuka od 13 W tj. 50 %. Pokazalo se također kako povećanje snage ultrazvuka na 75 % učinkovito razbija aglomerate ali također djeluje i na razbijanje čestica. Dobivene vrijednosti eksperimentalnog rada su u skladu sa zahtjevima ISO 13320-1, te je validirana metoda laserske difrakcije (MS2000) kao pogodna metoda za rutinsko određivanje veličina čestica.
Abstract (english)	This work was based on examination of laser diffraction method for volume distribution of particle sizes sulfisoxazole acetyl, to establish safe quality control. We examined the effect of ultrasound of 10 %, 25 %, 50 %, 75 % and 100 % mixing at speeds of 2000 rpm and 2500 rpm. Ultrasound power at 100% is 26 W, so the effect was examined at 2.6 W, 6.5 W, 13 W, 19.5 W and 26 W. Measurements were made before the action of ultrasound (after addition of sample in dispersion units Hydro Bath 2000 S) and during effects of ultrasound. Malvern Mastersizer instruments have all the options of measurement and diagnosis of supporting all standards of good manufacturing practices. Validated the standard procedure of analysis of particle size distribution on the instrument Malvern Mastersizer 2000 It was found that ultrasound improved the uniformity of particle size distribution. The best results were achieved with nominal power of 13 W ultrasound at 50 %. It has been shown also to increase the power of ultrasound at 75 % effective smashing agglomerates but also affects the breaking of particles. The values obtained experimental work in accordance with the requirements of ISO 13320-1, and is validated method of laser diffraction (MS2000) as a suitable method for routine determination of particle size.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:159:487624
Study programme	Title: Biotechnology; specializations in: Biochemical Engineering Course: Biochemical Engineering Study programme type: university Study level: graduate Academic / professional title: diplomirani inženjer biotehnologije; smjer biokemijsko inženjerstvo (diplomirani inženjer biotehnologije; smjer biokemijsko inženjerstvo)
Type of resource	Text
File origin	Born digital
Access conditions	Access restricted to students and staff of home institution
Terms of use
Repository	Repository of the Faculty of Food Technology and Biotechnology
Created on	2017-08-29 07:22:38

Nacionalna i sveučilišna knjižnica u Zagrebu

Dabar