Method for removal of radioactive cesium and facility therefor

A radioactive cesium removal method comprising the steps of:

• (a) burning an inflammable waste polluted with radioactive cesium to produce a combustion exhaust gas and an incineration ash including the radioactive cesium;
• (b) generating calcium oxide or/and magnesium oxide from a source of calcium oxide or/and a source or magnesium oxide using a sensible heat associated with both of the combustion exhaust gas and the incineration ash of the inflammable waste;
• (c) collecting the incineration ash including the radioactive cesium from the combustion exhaust gas;
• (d) combining said calcium oxide or/and said magnesium oxide, the recovered incineration ash including the radioactive cesium, and an organic substance polluted with radioactive cesium;
• (e) burning said calcium oxide or/and said magnesium oxide, the recovered incineration ash including the radioactive cesium, and an organic substance polluted with radioactive cesium;
• and
• (f) collecting a radioactive cesium volatized during said burning in step (e) by cooling an exhaust gas discharged from the burning in step (e) to obtain a decontaminated product.