Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Studies on the Fouling Reduction through Oxyfluorination of Porous Polyethylene Membranes

함산소불소화법을 통한 다공성 폴리에틸렌막의 파울링현상 감소연구

  • Received : 2014.09.11
  • Accepted : 2014.12.08
  • Published : 2014.12.31
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Abstract

To overcome the flux reduction due to the fouling by adsorption of foulants onto the porous hydrophobic polyethylene membrane surface, the oxyflorination was introduced to hydrophilize the hydrophobic membranes. After the hydrophilization through oxyfluorination, the contact angle decreased from $93^{\circ}$ to $50^{\circ}$ while the water flux increased to 60%. It was considered that for the model foulants dissolved in water, such as albumin (form bovine serum, BSA), humic acid sodium salt (HA), and alginic acid sodium salt (SA), the flux was enhanced since the adsorbed foulants decreased by the oxyfluorination. Particularly, it was obtained that the water flux was over twice more than the untreated polyethylene membrane in case of SA foulant.

소수성의 폴리에틸렌 다공성막 표면에 오염물질이 흡착됨으로써 발생되는 파울링 현상으로 인한 투과도 감소 문제를 해결하고자 함산소불소화법을 이용하여 막 표면을 친수화 하였다. 함산소불소화 처리 후 접촉각은 $93^{\circ}$에서 $50^{\circ}$까지 감소하였고, 수투과량은 60% 이상 증가하였다. 또한, 모델오염물질 Albumin (form bovine serum, BSA), Humic acid sodium salt (HA), Alginic acid sodium salt (SA) 100 ppm의 수용액을 이용하여 투과도 평가 실험을 수행한 결과 막이 친수화 됨에 따라 오염물질이 흡착되는 정도가 감소하여 투과도가 향상된 것을 확인할 수 있었으며, 특히 SA에 대해서는 파울링 개선효과가 크게 나타나 처리하지 않은 PE막에 비해 투과도가 두 배 이상 향상된 값을 나타내었다.

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References

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