| Issue |
Korean Chemical Engineering Research,
Vol.55, No.6, 778-784, 2017
Vol.55, No.6, 778-784, 2017
Na-Y 제올라이트가 첨가된 PVA/PAA 분리막의 아세트산 수용액에서 투과 증발 연구
Pervaporation Dehydration of Acetic Acid Aqueous Solution using PVA/PAA Membrane with Na-Y Zeolite
Poly(acrylic acid) (PAA)로 가교된 Poly(vinyl alcohol) (PVA)에 Na-Y 제올라이트 입자를 첨가하여 투과증발막을 제조하였다. 적외선 분광 분석(FT-IR), 팽윤 실험, 접촉각 측정, SEM 및 XRD 분석을 통해 분리막의 특성을 연구하였으며, 제조된 분리막은 물/아세트산 혼합물의 투과증발 분리에 적용하였다. 연구결과 분리막에 첨가된 Na-Y 제올라이트의 함량이 증가함에 따라 분리막의 친수성이 증가하였으며, 제올라이트가 첨가된 PVA/PAA분리막은 제올라이트가 첨가되지 않은 분리막에 비해 높은 투과도를 나타내었다. 10 wt% 아세트산 수용액에서 8 wt%의 제올라이트가 포함된 PVA/PAA 분리막이 가장 높은 선택도와 투과도를 나타내었다.
Membranes were prepared by incorporating Na-Y zeolite particles into poly(vinyl alcohol) (PVA) cross-linked with poly(acrylic acid) (PAA). The membrane was characterized by FT-IR spectroscopy, contact angle measurement, swelling test, SEM analysis, and XRD analysis. The pervaporation separation of water/acetic acid mixtures was carried out using prepared membranes. From the results, it was shown that the hydrophilic property of prepared membrane increased with increase of zeolite contents and the PVA/PAA membrane with zeolite addition showed higher permeation flux than that of without zeolite membrane. The PVA/PAA membrane containing 8 wt% zeolite showed the highest permeation flux and separation in the feed solution containing 10 wt% acetic acid.
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