Time-dependence of radiocesium concentration in separate sewer sludge; A New method to estimate the ingestion intake of cesium

Pratama, M. A.; Takahara, Shogo  ; Munakata, Masahiro ; Homma, Toshimitsu; Yoneda, Minoru*

This study proposes a new method to estimate the ingestion intake based on the time-dependent cesium (Cs) concentration in separate sewer sludge by using mass balance analysis of Cs in wastewater treatment plant and reverse biokinetic model. The results showed that the new method successfully estimated ingestion intake of Cs. However, several uncertainties resulted from parameters used in the models are indeed presence. In addition, this method needs to be tested in other areas to ensure its reliability and to identify its limitation.