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PVA 포상체에 의한 Kerosine에 용존된 수분 흡수

Absorption of Water Dissolved in Kerosine through PVA Sponges

HWAHAK KONGHAK, December 1990, 28(6), 630-636(7), NONE
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Abstract

PVA(poly vinyl alcohol) 포상체를 제조하여 kerosine 중에 용존된 수분의 흡수에 적용하였다. PVA 포상체는 kerosine 중의 수분 제거에 아주 효과적이었으며, 그 흡수 성능은 가교반응이 완료된 포상체의 세척조건에 아주 큰 영향을 받았다. 세척조건은 PVA 포상체의 친수성 성질을 좌우하는 것 같다. PVA 포상체의 흡수선능은 포상체의 세공부피보다는 포상체 자체의 친수성 성질과 더욱 밀접한 관련이 있는 것으로 보인다. 제조된 PVA 포상체의 kerosine 중에 용존된 수분에 대한 흡수속도는 수분농도의 2.3승에 비례하며, 30℃에서의 흡수속도 상수는 1.03×10-4 ppm-1.3·hr-1·liter·g-1 정도인 것으로 나타났다. PVA포상체의 흡수속도는 20-50℃의 범위에서 온도증가에 따라 증가하지만 높은 온도에서는 어떤 일정한 값에 수렴하는 것 같다. 본 연구에서 제조한 PVA 포상체는 실제의 kerosine 탈수공정에 직접 사용될 수 있을 것으로 기대된다.
PVA(poly vinyl alcohol) sponges were prepared and applied to the absorption of water dissolved in kerosine. PVA sponges were very effective for the removal of water from kerosine, and their absorption ability was greatly affected by the washing conditions of PVA sponges after cross-linking reactions. It seems that the washing con-ditions influence the hydrophilic properties of PVA sponges. The absorption ability of PVA sponges may be more close-ly related to the hydrophilic properties than the pore volume. It was found that the absorption rate of PVA sponges for water dissolved in kerosine is proportional to the water concentration to the power of 2.3 and the absorption rate con-stant at 30℃ is 1.03×10-4ppm-1.3ㆍhr-1ㆍliterㆍg-1. The absorption rate increases with the increase of temperature in the range of 20 50℃, but may converge to a certain value at higher temperatures. It is expected that PVA sponges pre-pared in this research can be directly utilized for the actual dehydration process of kerosine.

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References

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