Sorption of anthropogenic radionuclides onto river sediments and suspended solids: dependence on sediment composition

Abstract

The purpose of the study is to explore the sorption behaviour of anthropogenic radionuclides in the Vltava River catchment in the Czech Republic, which could be influenced by an assumptive severe nuclear accident. Radionuclide sorption was described by distribution coefficients between water and sediment or suspended solids, respectively. Then, possible correlations between radionuclide sorption and sediment properties were investigated using simple and multiple regressions. The sorption of radionuclides was affected by sediment granularity and mineralogical composition, each radionuclide having its group of influencing sediment parameters.

A model of isotope transport in the unsaturated zone, case study

“…The following parameters were used for the simulation: coefficient of molecular diffusion 1 • 10 −3 m 2 day −1 (i.e. 1.15 • 10 −8 m 2 s −1 ), longitudal dispersivity 0.1 m, distribution coefficient 0 m 3 kg −1 for isotope 1 and 0.0001 m 3 kg −1 [18] for isotope 2.…”

Radioactivity and Radiological Risk Assessment in Sediments from Upper and Lower Dukan Dam

“…Sediment moves into the water because of human and industrial activities, such as urbanization, agriculture, mining, forest, and manufacturing. Both the physical and chemical processes cause the transport of sediments into surface water, which affects both the water quality and the health of the aquatic ecosystem (Juranová et al 2020). Most of the radioactive materials are found in the sediment part of the aquatic ecosystem.…”