Purification of methylal/methanol mixtures by pervaporation process using ZIF-8 doped PEI membrane

Yıl 2023, Cilt: 6 Sayı: 1, 16 - 21, 27.06.2023

Derya Ünlü

https://doi.org/10.46239/ejbcs.1226164

Öz

In this study, pervaporation process is evaluated for the separation of methylal/methanol mixtures. Polyetherimide (PEI) polymer was chosen for the membrane preparation due to the affinity of the methanol. ZIF-8 was used as additive for the membrane. ZIF-8 doped PEI membrane was synthesized and characterized. The chemical bond structure, thermal strength and morphology of the membranes were analyzed by Fourier transform infrared spectroscopy (FTIR), Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM), respectively. Separation performance of membranes were investigated in different operation temperatures, different feed methanol concentrations and different ZIF-8 loading ratios. Optimum operation conditions were determined as 20 °C of operation temperature and 6 wt. % of feed methanol concentration and 0.5 wt.% ZIF-8 loading ratio. Flux and methanol selectivity values were 0.57 kg/m2h and 8169, respectively.

Anahtar Kelimeler

Membrane, Methylal, Pervaporation, Polyetherimide, Membran, Metilal, Pervaporasyon, Polieterimid

Proje Numarası

210ÖAP03

Metilal/metanol karışımlarının ZIF-8 katkılı PEI membran kullanarak pervaporasyon prosesi ile saflaştırılması

Öz

Bu çalışmada, metilal/metanol karışımlarının ayrılması için pervaporasyon işlemi kullanılmıştır. Metanole afinitesinden dolayı membran hazırlamak için polieterimid (PEI) polimeri seçilmiştir. ZIF-8, membran için katkı maddesi olarak kullanılmıştır. ZIF-8 katkılı PEI membranı sentezlenmiş ve karakterize edilmiştir. Membranların kimyasal bağ yapısı, termal dayanımı ve morfolojisi sıraısyla Fourier dönüşümü kızılötesi spektroskopisi (FTIR), Termogravimetrik Analiz (TGA) ve Taramalı elektron mikroskobu (SEM) ile analiz edilmiştir. Membranların ayırma performansı farklı çalışma sıcaklıklarında, farklı besleme metanol konsantrasyonlarında ve farklı ZIF-8 yükleme oranlarında incelenmiştir. Optimum proses koşulları, 20°C operasyon sıcaklığı, ağırlıkça %6 besleme metanol konsantrasyonu ve ağırlıkça %0.5 ZIF-8 yükleme oranı olarak belirlenmiştir. Akı ve metanol seçicilik değerleri bu koşullar altında sırasıyla 0.57 kg/m2h akı ve 8169 metanol seçiciliği olarak belirlenmiştir.

Anahtar Kelimeler

Membran, Metilal, Pervaporasyon, Polieterimid

Destekleyen Kurum

Bursa Teknik Üniversitesi Bilimsel Araştırma Projeleri Birimi

Proje Numarası

210ÖAP03

Teşekkür

Bu çalışma Bursa Teknik Üniversitesi Bilimsel Araştırma Projeleri birimi tarafından 210ÖAP03 numaralı proje kapsamında desteklenmiştir.

Kaynakça

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