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master's thesis
Utjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2018. urn:nbn:hr:159:084154
Pintarić, Toni
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for Food Processes Engineering

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

Cite this document

Pintarić, T. (2018). Utjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:084154

Pintarić, Toni. "Utjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2018. https://urn.nsk.hr/urn:nbn:hr:159:084154

Pintarić, Toni. "Utjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2018. https://urn.nsk.hr/urn:nbn:hr:159:084154

Pintarić, T. (2018). 'Utjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 14 July 2024, https://urn.nsk.hr/urn:nbn:hr:159:084154

Pintarić T. Utjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2018 [cited 2024 July 14] Available at: https://urn.nsk.hr/urn:nbn:hr:159:084154

T. Pintarić, "Utjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:159:084154

Metadata
TitleUtjecaj visokonaponskog plazma pražnjenja na razgradnju pesticida u vodenoj otopini
Title (english)The effect of high voltage electrical discharge plasma on degradation of pesticides from aqueous solution
AuthorToni Pintarić
MentorTomislava Vukušić (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Engineering)
(Laboratory for Food Processes Engineering)
Zagreb
Defense date and country2018-11-26, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Visokonaponsko plazma pražnjenje pripada u ekološki prihvatljive tehnike netermalnog procesiranja hrane. Cilj ovog rada bio je utvrditi potencijal tretmana hladnom plazmom u razgradnji pesticida (pirimetanila i fenheksamida). Tretman se provodio na vodenim otopinama pesticida u hibridnom plazma reaktoru u trajanju od 10, 20 i 30 min pri frekvencijama od 60, 90 i 120 Hz uz korištenje dušika, kisika, argona i zraka kao radnih plinova. Određivani su fizikalno-kemijski pokazatelji (temperatura, pH, električna provodnost) i radikalni spojevi (vodikov peroksid, nitrati i nitriti). Primjenom blisko-infracrvene spektroskopije određivane su strukturne promjene nastale tijekom tretmana. Koncentracija pesticida u otopinama mjerena je LC-MS/MS metodom. Najbolji rezultati razgradnje postignuti su tretmanom od 30 min, gdje je primjenom argona došlo do razgradnje 99,79% pirimetanila i 99,9% fenheksamida. Međutim kod tretmana od 10 min najbolji rezultat je postignut primjenom kisika kao radnog plina.
Abstract (english)
High voltage electrical discharge plasma is ecologically acceptable non-thermal food processing technique. The main goal of this research was to determine potential of non-thermal plasma discharge in decomposition of pesticides (pyrimethanil and fenhexamid). Treatment was conducted in pesticide solutions in the hybrid plasma reactor. Duration of treatments was 10, 20 and 30 min at frequencies of 60, 90 and 120 Hz with usage of nitrogen, argon, oxygen and atmospheric air as working gas. Physicochemical parameters (temperature, pH and electrical conductivity) and concentration of radical compounds were determined. Changes in structural composition of pesticides were determined using near-infrared spectroscopy. Concentration of pesticides in solution was measured using LC-MS/MS method. Best degradation results were accomplished in 30 min treatment with argon. Results showed that 99, 79% of pyrimethanil and 99, 9% of fenhexamid were degraded. In addition, the best results with were achieved after 10 minutes treatments with oxygen as working gas.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:084154
Study programmeTitle: Food Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka prehrambenog inženjerstva (magistar/magistra inženjer/inženjerka prehrambenog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2019-11-27 12:18:31