Studies on radiation effects in decontamination of radioactive water by using zeolites as absorbents for radioactive nuclides

Radioactive water has been emitted following incidents at the Fukushima Dai-ichi Nuclear Power Station, and needed to be quickly decontaminated by the adsorption and/or the coagulation sedimentation of radioactive nuclides, where hydrogen molecules are produced by water radiolysis. The decontamination process with zeolites as absorbents of radioactive cesium was assumed, the observed yields of hydrogen production were determined in mixtures of seawater and zeolite, and then the production rates were estimated for the safety operation of process before the operation started. (author)