논문 해외 국제전문학술지(SCI급) Mass transfer of organic compounds in dilute aqueous solutions into high density polyethylene geomembranes
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2004-02
- 저자명 Jin Chul Joo, Jae Young Kim, Kyoungphile Nam
- 학술지명 Journal of Environmental Engineering
- 발행처명 American Society of Civil Engineers
- 발행국가 해외
- 논문언어 외국어
- 연구분야 공학 > 환경공학
- 원문 링크 https://doi.org/10.1061/(ASCE)0733-9372(2004)130:2(175)
홈페이지논문 초록 (Abstract)
The mass transfer of ten organic compounds into high density polyethylene (HDPE) geomembranes is investigated using batch immersion tests with dilute aqueous organic compound solutions. For the concentration ranges tested, the linear model is suitable to explain the sorption of organic compounds. The HDPE-water (HDPE-W) partition coefficients of the organic compounds (K HDPE-W) have a good logarithmic linear relationship with their octanol-water partition coefficients and water solubility. The diffusion coefficients (D) of all organic compounds tested are on the order of 10^-9 cm^2/s and decrease with the increase in their molecular diameters. The effects of the presence of other organic compounds, pH, ionic strength, temperature, and five-year aging of HDPE geomembranes on sorption are evaluated. All factors except the temperature are insignificant. As temperature increase, K HDPE-W values are not affected significantly, but D values increase. A mathematical model, together with the experimentally determined mass transfer parameters, is used to predict the mass flux of organic compounds through HDPE geomembranes.