Acknowledgement
Supported by : Korean Science and Engineering Foundation
Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 29 Issue 2
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- Pages.86-91
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- 1996
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
Water Vapor Adsorption on Soils. -I. Surface areas and adsorption energies as calculated by the BET and a new Aranovich theories
토양에서의 수증기 흡착 -I. BET와 Aranovich식에 의한 한국토양에서의 수증기흡착 등온식으로 토양표면적과 흡착에너지 산정
- Jozefaciuk, G. (Institute of Agrophysics of the Polish Academy of Sciences ul Doswiadczalna) ;
- Shin, Jae-Sung (National Agricultural Science and Technology Institute, Rural Development Administration)
- Published : 1996.06.30
Abstract
Water vapor adsorption isotherms were measured for samples of the A horizons of five typical Korean soils. The experimental data were fitted to the BET and Aranovich adsorption equations. The adsorption isotherms studied followed the BET equation for the relative water vapor pressures in 0.03-0.33 range and the Aranovich equation in 0.03-0.6 range. The calculated surface areas were higher for Aranovich than for BET and opposite relations were found for adsorption energies. For the description of the water adsorption on soils, the use of the Aranovich theory is recommended.
한국 5개 토양에 대한 수증기 흡착자료를 이용 이질적인 토양 표면에서의 흡착모형인 BET와 아라노비치식을 이용 흡착에너지 분포함수와 평균흡착에너지를 산출하였다. 분포함수는 넓게 분포하였는데 이는 표토의 높은 에너지 불균일성을 나타내는 것으로 새로운 아라노비치모형의 이용으로 폭넓은 흡착에너지 영역 연구가 가능하게 되었다