Applied Chemistry, Vol.7, No.1, 377-380, May, 2003
흡착 우라늄 이온의 전기 탈착거동
Electro-desorption of Adsorbed Uranium Ions in Liquid Waste
Liquid wastes containing uranium ions in high concentration of chemical salts have been treated by electrosorption on a activated carbon fibers(ACFs) electrode. Effective uranium (VI) removal is accomplished when the potential is -0.5V (vs. Ag/AgCl) or more negative. For a feed concentration of 100 mg/l, the concentration of U(VI) in the cell effluent is reduced to less than 1mg/l, and electrosorption capacity over 500 mguranium/GACF is reached. The adsorbed uranium can be desorbed up to 99% for 20h by passing a 1.0 N NaCl solution at pH 3 through the cell and applying a potential of +1.2V. The amount of desorbed uranium increased as the solution pH was lowered and the applied potential increased.