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undergraduate thesis
CO2 kao otapalo za prirodne pesticide
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. urn:nbn:hr:149:034322
Veseli, Rea
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Veseli, R. (2015). CO2 kao otapalo za prirodne pesticide (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:034322

Veseli, Rea. "CO2 kao otapalo za prirodne pesticide." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:034322

Veseli, Rea. "CO2 kao otapalo za prirodne pesticide." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:034322

Veseli, R. (2015). 'CO2 kao otapalo za prirodne pesticide', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 27 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:034322

Veseli R. CO2 kao otapalo za prirodne pesticide [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2015 [cited 2024 December 27] Available at: https://urn.nsk.hr/urn:nbn:hr:149:034322

R. Veseli, "CO2 kao otapalo za prirodne pesticide", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:149:034322

Metadata
TitleCO2 kao otapalo za prirodne pesticide
Title (english)CO2 as a solvent for natural pesticides
AuthorRea Veseli
MentorMarko Rogošić (mentor)
Committee memberMarko Rogošić (predsjednik povjerenstva)
Committee memberAleksandra Sander (član povjerenstva)
Committee memberJasna Prlić Kardum (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2015-09-17, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Mechanical, Thermal and Separation Processes
Abstract
U ovom su radu procijenjene topljivosti prirodnih pesticida – složenih organskih spojeva (triterpenoidi azadirahtin, nimbin i salanin dobiveni iz nima te piretrini piretrin I i II, cinerin I i II i jasmolin I i II dobiveni iz cvjetova različitih vrsti krizantema) – u smjesama nadkritičnog CO2 i etanola. Potrebni parametri za procjenu topljivosti dobiveni su raspoloživim empirijskim metodama, odnosno Peng-Robinsonovom jednadžbom stanja. Ravnotežni tlakovi sublimacije procijenjeni različitim metodama međusobno nisu slagali i za po nekoliko redova veličine, što je uvelike ograničavalo pouzdanost procjena topljivosti. Proračun topljivosti stoga je ograničen samo na nimbin – rezultati su pokazali da se najveća topljivost može očekivati pri nižim temperaturama i srednjim tlakovima, te da povećanje udjela etanola u smjesi s nadkritičnim CO2 povećava njegovu topljivost.
Abstract (english)
In this paper the solubilities of natural pesticides – complex organic compounds (triterpenoids azadirachtin, nimbin and salanin derived from neem seeds and pyrethrins pyrethrin I and II, cinnerin I and II and jasmolin I and II obtained from the flowers of various chrysanthemum species) – in the mixtures of supercritical CO2 and ethanol were estimated. The required parameters for assessing the solubility were obtained by available empirical methods as well as with the Peng-Robinson equation of state. The sublimation pressures of pure solids estimated with different methods were not coherent and differed by several orders of magnitude, which greatly limited the reliability of obtained estimates. Therefore only the solubility of nimbin was calculated – the results showed that the largest solubility may be expected at lower temperatures and medium pressures; the increase of ethanol content in the mixture with CO2 was found to increase the solubility.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:034322
Study programmeTitle: Applied Chemistry - Undergraduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Environmental chemistry and green technologies
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2016-11-28 14:56:08