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završni rad
Influence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate
2018. urn:nbn:hr:182:958007
Bilić, Katarina
Sveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za kemiju
Zavod za analitičku, organsku i primijenjenu kemiju

Citirajte ovaj rad

Bilić, K. (2018). Influence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate (Završni rad). Osijek: Sveučilište Josipa Jurja Strossmayera u Osijeku, Odjel za kemiju. Preuzeto s https://urn.nsk.hr/urn:nbn:hr:182:958007

Bilić, Katarina. "Influence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate." Završni rad, Sveučilište Josipa Jurja Strossmayera u Osijeku, Odjel za kemiju, 2018. https://urn.nsk.hr/urn:nbn:hr:182:958007

Bilić, Katarina. "Influence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate." Završni rad, Sveučilište Josipa Jurja Strossmayera u Osijeku, Odjel za kemiju, 2018. https://urn.nsk.hr/urn:nbn:hr:182:958007

Bilić, K. (2018). 'Influence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate', Završni rad, Sveučilište Josipa Jurja Strossmayera u Osijeku, Odjel za kemiju, citirano: 30.12.2024., https://urn.nsk.hr/urn:nbn:hr:182:958007

Bilić K. Influence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate [Završni rad]. Osijek: Sveučilište Josipa Jurja Strossmayera u Osijeku, Odjel za kemiju; 2018 [pristupljeno 30.12.2024.] Dostupno na: https://urn.nsk.hr/urn:nbn:hr:182:958007

K. Bilić, "Influence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate", Završni rad, Sveučilište Josipa Jurja Strossmayera u Osijeku, Odjel za kemiju, Osijek, 2018. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:182:958007

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Podaci o radu
NaslovInfluence of magnetic stirring, temperature and citrate concentration on the precipitation of calcium oxalate dihydrate
AutorKatarina Bilić
MentorBerislav Marković (mentor)
MentorAnamarija Stanković (mentor)
Ustanova koja je dodijelila
akademski / stručni stupanj		Sveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za kemiju
(Zavod za analitičku, organsku i primijenjenu kemiju)
Osijek
Datum i država obrane2018-09-28, Hrvatska
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Kemija
Sažetak
This paper reports on the investigation of experimental conditions relevant for spontaneous precipitation of significant amount of pure calcium oxalate dihydrate (COD). For this purpose, the hydrodynamic and thermodynamic parameters, such as mode of agitation, temperature, supersaturation and concentration of additives (citrate ions), have been studied. The results show that in the model systems, without the citrate addition and applied mechanical stirring, calcium oxalate monohydrate (COM) was observed as dominant modification after 20 min of aging, while the magnetic stirring resulted in a formation of a mixture of COM and calcium oxalate trihydrate (COT), regardless of the temperature applied. In the mechanically stirred systems, the addition of citrate ions in the range of concentrations, 0.001 mol \(dm^{-3} \) < \(c_{i}\left ( Na_{3} C_{6}H_{5}O_{7}\right )\) < 0.012 mol \(dm^{-3} \) , caused the formation of COM and COD mixture at all temperatures. At the same conditions and in the magnetically stirred systems formation of COD, in a mixture with COT or COM, has been observed. The highest COD content in the mechanically stirred system was obtained at 45 °C and \(c_{i}\left ( Na_{3} C_{6}H_{5}O_{7}\right )\) = 0.001 mol \(dm^{-3} \) (w = 89.5%), while in the magnetically stirred system almost pure COD was obtained at 37 °C and \(c_{i}\left ( Na_{3} C_{6}H_{5}O_{7}\right )\) = 0.008 mol \(dm^{-3} \) (w = 96.5%).
Ključne riječi
Jezikengleski
URN:NBNurn:nbn:hr:182:958007
Studijski programNaziv: Kemija
Vrsta studija: sveučilišni
Stupanj studija: preddiplomski
Akademski / stručni naziv: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (univ. bacc. chem.)
Vrsta resursaTekst
Način izrade datotekeIzvorno digitalna
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Datum i vrijeme pohrane2018-12-14 10:33:57