Study on adsorption ability of hydroxyapatite for strontium in solutions

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Abstract

<p>A tsunami from the Great East Japan Earthquake on March 11, 2011 caused a nuclear disaster at the Fukushima Daiichi nuclear energy plant of the Tokyo Electric Power Company. The radioactive materials dispersed by the accident, spread to the soil, lake, river, and marine environments. Decontamination work for the radioactive material hasn't been completed and radiation tainted groundwater continues to be generated by damaged facilities. The Tokyo Electric Power Company installed steel walls called impermeable walls to prevent the effusion of radiation-tainted groundwater to the sea. However, it seems more likely that this will simply increase the amount of radiation-tainted ground water. While the polluted water contains cesium and strontium, the removal of strontium has a higher priority. Strontium having properties similar to calcium is stored in the bones. Therefore, it has the potential to accumulate in the body over time when introduced into the body. In light of this, new decontamination techniques for the removal of strontium is urgent business. In this study, technology to remove strontium from a solution is proposed by utilizing the hydroxyapatite derived from fishbone as the adsorbent. The performance of the adsorbent is evaluated by comparing adsorbents, and changing the test period and the utilized solutions. From the variety of experiment results, it is expected that this method will be effective in the improvement of water quality when applied to marine, lake and radiation tainted water. </p>

Journal

  • Japanese Geotechnical Society Special Publication

    Japanese Geotechnical Society Special Publication 4(7), 163-167, 2016

    The Japanese Geotechnical Society

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