Attempts to capturing ppb-level elements from sea water with hydrogels

Kazuhiro Hara, Seiya Fujiwara, Tetsumasa Fujii, Satoru Yoshioka, Yoshiki Hidaka, Hirotaka Okabe

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Stable energy resource supply is an important subject from the perspective of national security. In this sense, recovering uranium from seawater is important and profitable for the countries of which the land is surrounded by sea and is not endowed with energy resources such as Japan. However, the concentration of uranium dissolved in seawater is extremely low (ppb level) but the total amount of uranium is huge because of the tremendous seawater volume on the Earth. Therefore, in order to promote the efficiency of adsorbents capturing ppb-level uranium from seawater, the authors propose the utilization of hydrogel as a new adsorbent base material. In order to demonstrate the usefulness of the hydrogel for the ppb-level element-adsorption from seawater, the authors have developed the amidoxime incorporated hydrogel and have examined their ppb-level uranium capturing efficiency in the presence of other elements. From the experimental results, a potential for this purpose has been demonstrated by considerably high adsorption functionality.

Original languageEnglish
Pages (from-to)228-233
Number of pages6
JournalProgress in Nuclear Energy
Publication statusPublished - Sept 1 2016

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology
  • Waste Management and Disposal


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