Radioactive liquid waste has given soil & water pollution and further congenital defect to the humanity. With this regard, there are lots of interests in reducing concentration of radioactive material even if it is in low level (ppm). There are filtration driven by pressure such as ultra-filtration, nano-filtration, and reverse osmosis to separate radioactive liquid waste. Among them, Nano-Filtration membrane shows promising performance in both permeability and selectivity. Commercial nanofiltration membrane were applied to separate model solutions. Model seawater was desalinated to 6,100 ppm with flux of 90 L/ ㎡h. On the other hands, Model nuclides (Co, Cs, and Sr) solutions are separated from 10 ppm to 2 ppm, 0.23 ppm, and 0.13 ppm. Commercial nanofiltration membranes show the trade-off property between selectivity and flux.

• 김형주(한국원자력연구원, Korea Atomic Energy Research Institute, Daejeon, Korea) | Hyung-Ju Kim
• 강한희(한국원자력연구원, Korea Atomic Energy Research Institute, Daejeon, Korea) | Hanhi Kang
• 양희철(한국원자력연구원, Korea Atomic Energy Research Institute, Daejeon, Korea) | Hee-Chul Yang
• 정동용(한국원자력연구원, Korea Atomic Energy Research Institute, Daejeon, Korea) | Dong-Yong Chung
• 문제권(한국원자력연구원, Korea Atomic Energy Research Institute, Daejeon, Korea) | Jei-Kwon Moon
• 최종원(한국원자력연구원, Korea Atomic Energy Research Institute, Daejeon, Korea) | Jong-Won Choi