Polimerik Membranlarda Zeolit Kullanımının Pervaporasyon Performansı Üzerine Etkisinin İncelenmesi

Bu çalışmada, pervaporasyon yöntemiyle dimetilformamit/su karışımının ayrılması amacıyla sodyum aljinat/poli (vinil alkol)/klinoptilolit kompozit membran elde edilmiştir. Çapraz bağlı membranlar, (FTIR), diferansiyel taramalı kalorimetre (DSC), termal gravimetrik analiz (TGA) ve taramalı elektron mikroskobu (SEM) cihazları ile karakterize edilmiştir. Akı değeri (3,266 kg/m2 sa) yüksek bulunmasına karşın, seçicilik için arzulanan sonuca ulaşılamamıştır. Ağırlıkça % 20 DMF çözeltisi için aktivasyon enerjisi 3,720 kcal/mol olarak ölçülmüştür. Zeolit ilavesinin membran performansına etkisi araştırılmıştır.

Anahtar Kelimeler:

Pervaporasyon, Dimetilformamit, Kompozit Membran, Aktivasyon Enerjisi

Investigation of the Effect of Zeolite Usage on Pervaporation Performance in Polymeric Membranes

In this study, sodium alginate/poly (vinyl alcohol)/clinoptilolite composite membrane was obtained for the separation of dimethylformamide/water mixture by pervaporation method. Cross-linked membranes were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA) and scanning electron microscope (SEM) instruments. Although the flux value (3.266 kg/m2 h) was found to be high, the desired result for selectivity could not be achieved. The activation energy for the 20% by weight DMF solution was measured as 3,720 kcal/mol. The effect of zeolite addition on membrane performance was investigated.

Keywords:

Pervaporation, Dimethylformamide, Composite Membrane, Activation Energy,

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