Biosorption modeling and characteristics of radionuclide-removing microalgae in semipermeable membrane

초록

The theoretical modeling and characteristics of biosorption using radionuclide-absorbing microalgae (Chlorella vulgaris) in low-level radionuclide-contaminated water are implemented. Radioactive materials such as cesium and strontium that pass through holes in semipermeable membranes are absorbed by microalgae. Equilibrium biosorption conditions between C. vulgaris and the radionuclides are obtained from previous experimental results. The biosorption characteristics of C. vulgaris for each radionuclide are theoretically established using Langmuir isotherms. A kinetic model of the biosorption process of the proposed membrane system has been developed using mass balances. Simulations of the biosorption efficiency over time have been performed to predict the removal of the radionuclides in the biosorption process. © 2018 The Korean Society of Mechanical Engineers.

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