Effective extraction of radioactive cesium from the polluted soil into water was achieved by using the detergent composed of an acid, an alkaline metal or alkaline earth metal chloride, and a cellulose dispersant. In particular, the detergent solution consisting of 5% sulfuric acid, 20% magnesium chloride, and 1% hydroxyethyl cellulose showed high extraction ability towards radioactive cesium in polluted soil. By washing the polluted soil twice with this detergent solution, 96% of the radioactive cesium was extracted from the soil.
