화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2018년 가을 (10/24 ~ 10/26, 대구 EXCO)
권호 24권 2호, p.1262
발표분야 공정시스템(Process Systems Engineering)
제목 Simple method for measuring diffusion coefficient with FO membrnae
초록 Diffusion coefficient is of great importance for researches related to solution dynamics. However, diffusion coefficient of some unfamiliar solutes and mixtures of solutes are usually not known. Due to this hardness and limitation of expensive devices, researchers have been assuming the diffusion coefficients. However, this may differ from real diffusive behavior. We suggest a new simple method for obtaining diffusion coefficient by using membranes which structural parameter is known. We can predict the permeate flux of membrane by calculating internal concentration polarization and salt flux with membrane permeability, applied pressure, draw solution concentration, diffusion coefficient and structure parameter. However, with PRO configuration and other parameters known, permeate flux can be fixed and diffusion coefficient can be obtained. Because water is permeating to the draw solution side, diffusion coefficients of different concentration are obtained simultaneously. Furthermore, we expect this method would be effective in other applications as well.
저자 장윤혁1, 박기호1, 장지웅2, 양대륙1
소속 1고려대, 2금오공과대
키워드 공정모델링
E-Mail
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