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

Year 2022, , 819 - 828, 31.12.2022

Suat Kahya

https://doi.org/10.35193/bseufbd.1080547

Abstract

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

Polimerik Membranlarda Zeolit Kullanımının Pervaporasyon Performansı Üzerine Etkisinin İncelenmesi

Abstract

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.

Keywords

Pervaporasyon, Dimetilformamit, Kompozit Membran, Aktivasyon Enerjisi

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