ENRICHMENT OF OXYGEN-18 ISOTOPE BY FRACTIONAL DISTILLATION

Year 2018, Volume: 30 Issue: 1, 13 - 23, 26.06.2018

Selen Nimet Gürbüz Güner , Haydar Dişbudak Erhan Aksu , Mahmut Eken Filiz Karacan

Abstract

In
the scope present study, fractional water distillation column operating under
vacuum, with a height of 200 cm and a diameter of 3 cm, was designed and
manufactured from Pyrex glass. Column was operated at an
evaporation/condensation rate of 120-140 ml/min and a feed flow rate of 0.5-10
ml/min at 52 °C under -0.8 bar vacuum pressure.

Oxygen-18
isotope ratios were determined using Isotope Ratio Mass Spectrometry (IR-MS).
Results of the IR-MS analysis indicated that maximum relative O-18 isotope
enrichment in distilled natural water was 28-90 ppm.

Keywords

Stable Isotope, Oxygen-18, Fractional Distillation, Isotope Enrichment, Vacuum Distillation

FRAKSİYONEL DİSTİLASYON İLE OKSİJEN - 18 İZOTOPUNUN ZENGİNLEŞTİRİLMESİ

Abstract

Bu çalışmada, vakum altında çalışan 200 cm
yüksekliğinde ve 3 cm çapında fraksiyonel su destilasyon kolonu tasarlanmış ve
pyrex camdan imal edilmiştir. Kolon; -0.8 bar, 52° C’de 120-140 ml/dk
buharlaşma/yoğunlaşma ve 0.5-10 ml/dk besleme hızlarında damıtılmış su
(distilated water) ile çalıştırılmıştır. Oksijen-18 izotop oranlarının analizi
İzotop Oranı – Kütle Spektrometresi (IR-MS) cihazı ile yapılmıştır. Yapılan deneyler sonucunda;
damıtılmış suda ki doğal O-18 izotop miktarında 28-90 ppm aralığında artış
olduğu ölçülmüştür. Bu tip bir fraksiyonel su damıtma kolonunun çalışma
parametreleri daha önce literatürde raporlanmamıştır çünkü bu çalışmada
tasarlanan kolon sistemi literatürde bildirilen benzer kolon sistemlerinden çok
daha küçüktür.

Keywords

Kararlı İzotop, Oksijen-18, Fraksiyonel Destilasyon (damıtma), İzotop Zenginleştirme, Vakum Destilasyonu

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