Adsorption of Radioactive Materials by Green Microalgae Dunaliella salina from Aqueous Solution

Document Type: Original Paper

Authors

1 Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran

2 Department of medical physics, faculty of medicine, Fasa university of medical sciences, Fasa, Iran

3 Department of medical physics, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Introduction: Nuclear accidents release large quantities of radioactive materials into the environment. Iodine-131 and cesium-137 are two radionuclides released; and nuclear accident that pose the greatest cancer risks. These radionuclides can be moved to other areas through rain and wind. The aim of this study was to develop efficient and economical biological methods for absorption of water-soluble radionuclides released after a nuclear accident. Materials and Methods: In this study, a novel algal strain, Dunaliella Salina, that is known for its antioxidant activity was used for absorption of radioiodine. It is a halophile green microalga and can survive in highly saline conditions, such as sea salt fields. Exposure of the algae to aqueous solution of I-131 radionuclide was performed for 1, 2 and 3 hours. The concentration activities of the samples were 27μCi/ml and 270μCi/ml. After removing the alga by centrifuging, activities of the sample solutions were measured by using a calibrated dose calibrator. Measured activity at the mentioned times and both groups was statistically significant (p

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Articles in Press, Accepted Manuscript
Available Online from 29 March 2019
  • Receive Date: 05 February 2019
  • Revise Date: 21 March 2019
  • Accept Date: 29 March 2019