Global searches for microalgae and aquatic plants that can eliminate radioactive cesium, iodine and strontium from the radio-polluted aquatic environment: a bioremediation strategy

Journal of Plant Research
Shin-Ya FukudaYoshihiro Shiraiwa

Abstract

The Fukushima 1 Nuclear Power Plant accident in March 2011 released an enormously high level of radionuclides into the environment, a total estimation of 6.3 × 10¹⁷ Bq represented by mainly radioactive Cs, Sr, and I. Because these radionuclides are biophilic, an urgent risk has arisen due to biological intake and subsequent food web contamination in the ecosystem. Thus, urgent elimination of radionuclides from the environment is necessary to prevent substantial radiopollution of organisms. In this study, we selected microalgae and aquatic plants that can efficiently eliminate these radionuclides from the environment. The ability of aquatic plants and algae was assessed by determining the elimination rate of radioactive Cs, Sr and I from culture medium and the accumulation capacity of radionuclides into single cells or whole bodies. Among 188 strains examined from microalgae, aquatic plants and unidentified algal species, we identified six, three and eight strains that can accumulate high levels of radioactive Cs, Sr and I from the medium, respectively. Notably, a novel eustigmatophycean unicellular algal strain, nak 9, showed the highest ability to eliminate radioactive Cs from the medium by cellular accumulation. Our results p...Continue Reading

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Citations

Jan 20, 2016·Bulletin of Environmental Contamination and Toxicology·Keerthi Sri Senartahna AtapaththuTakashi Asaeda
Nov 26, 2015·Environmental Science and Pollution Research International·Dahu DingTianming Cai
Mar 7, 2015·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Shigekazu TakahashiHiroyuki Satoh
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Aug 24, 2019·Chemistry & Biodiversity·Sanja MilovićTatjana Kundaković-Vasović
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Apr 25, 2020·The Science of the Total Environment·Jaroslav VaculaLibor Pechar
Apr 25, 2020·The Science of the Total Environment·Lynn FosterJonathan R Lloyd

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Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.