화학공학소재연구정보센터
Separation Science and Technology, Vol.47, No.1, 22-29, 2012
Effect of Electrode Materials on Electrokinetic Reduction of Soil Salinity
Laboratory electrokinetic (EK) tests were conducted for the restoration of saline soil which contained mainly Na+, Cl- and SO42- ions. The effect of anode materials on salt removal was investigated by comparing various anodes such as dimensionally-stable anode, Pt, Si/BDD (boron-doped diamond), and Fe electrode. In all tests Na+ and Cl- were easily removed from the soil (>97%). Fe tests showed higher reduction of SO42- concentration and resulted in higher electrical conductivity reduction (similar to 90%) than the other anode tests. The results demonstrated that the EK process can reduce soil salinity effectively and the Fe anode is more suitable for restoration of sulfate-rich saline soil than other insoluble anodes.