ENRICHMENT OF OXYGEN-18 ISOTOPE BY FRACTIONAL DISTILLATION

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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