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루이스 삼투압식(1908)을 개량한 고농축 용액의 삼투압 예측

Osmotic Pressures of Highly Concentrated Solutions: A Modified Estimation of GN Lewis equation of 1908

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  • URLhttps://db.koreascholar.com/Article/Detail/361249
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한국막학회 (The Membrane Society Of Korea)
초록

Water resources are the most important resources for all living things on the earth to grow and reproduce, and sustain agricultural, industrial, household, recreational and environmental activities. Since 97% of these water resources is a seawater, desalination is a practical choice of many water-poor countries. Currently MSF (multistage flash evaporation) and RO (reverse osmosis) that need 25 kWh and 4kWh per m3 of fresh water although thermal methods need 718kWh and pressure based-RO 1kWh.
This work focuses on how to estimate highest osmotic pressure of many aqueous saturated solutions such as NaCl and fuel ethanol that reaches 343.07 bars of 26.47%, over 5000 bars, respectively. This work shows that Lewis equation (1908) fits within 10% of OLI pressure and the modified estimation of Chang (1983) within 1% accuracy.

저자
  • 장호남(랩투마켓, 카이스트) | Ho Nam Chang
  • 선미향(랩투마켓) | Mi Hyang Seon
  • 최경록(카이스트) | Kyung Rok Choi
  • 정권수(엘지화학) | Kwon Su Jung