Library of Technical Faculties, Maribor (KTFMB)
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Razgradnja pesticidov z ozonom in platinastim katalizatorjemTepuš, Brigita ; Simonič, MarjanaNa modelni vodi, ki vsebuje pesticid atrazin, smo izvedli preskuse ozoniranja ter ozoniranja ob dodatku platinastega katalizatorja (SPK). Preskuse smo izvedli ob kontinuirnem toku ozona v preskusnem ... reaktorju. Preskušali smo vpliv pH in temperature na hitrost razpada ozona. Proučevali smo razpad organskega in anorganskega ogljika na ozoniranju modelnih vzorcev. Višanje vrednosti pH je imelo negativno posledico na razpad katalizatorja. Ugotovili smo, da so najboljši pogoji za ozoniranje vode okrog nevtralnega pH področja, kadar uporabljamo le Pt-katalizator brez dodatka drugih kemikalij za pospešitev razpada ozona. Z nižanjem temperature se hitrost razpada organskih in anorganskih komponent v vodi niža, vendar je vpliv teh komponent na razgradnjo ozona še vedno velik, saj se le te v vodi nahajajo v 1000 krat višjih koncentracijah kot je koncentracija atrazina. Višanje temperature iz 5°C na 40 °C je pomenilo za približno 11-krat hitrejši razpad atrazina v modelni vodi z in brez uporabe SPK. Pri samem razpadu atrazina v modelni vodi smo proučevali tudi vpliv pretoka plina in ugotovili, da se pri povečanem pretoku plina kisika, ki vsebuje ozon, hitrost razgradnje atrazina pri uporabi Pt katalizatorja zmanjša za približno 1,7-krat če se pretok poveča iz 15 L/h na 115 L/h. Atrazin je v realni vodi razpadal približno 3-krat počasneje kot v modeli vodi, ki ni vsebovala motečih substanc ob uporabi Pt-katalizatorja.Source: Slovenski kemijski dnevi 2006, Maribor, 21. in 22. september 2006 [Elektronski vir] (9 str.)Type of material - conference contributionPublish date - 2006Language - slovenianCOBISS.SI-ID - 10755350
Author
Tepuš, Brigita |
Simonič, Marjana
Topics
ozoniranje |
vodikov peroksid |
platinasti katalizator |
atrazin |
hitrost reakcije |
kinetika |
obdelava odpadnih vod |
ozonation |
Pt catalyst |
atrazine |
kinetics |
water treatment
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Tepuš, Brigita | 25606 |
Simonič, Marjana | 12659 |
Source: Personal bibliographies
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