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Technical information


  1. 箇条書き項目  Nano-structured MnO2 based adsorbent that is capable of extracting arsenic from ppm-level aqueous solutions polluted with arsenic. Its high yield, good selectivity were proved by tests using natural underground waters. To make safe drinkable water from the underground water in China, India, Bangladesh, this selective adsorption property is useful.


  1. 箇条書き項目  Chemical composition of a under ground water and the drastic decrease of As concentration by the adsorption effect with the nano-structured MnO2 based adsorbent.




  1. 箇条書き項目The nano-structured MnO2 based adsorbent covers wide pH range for the effective treatment of water containing As




REFERENCES

  US Patent US7335622B2, JP Patent: P03P000381：Manganese oxygen compound with arsenic sorbability, Arsenic adsorbent, and method of adsorption and removal of arsenic in solution. Hideki Koyanaka、Toshihiro Kasai・JST・Date of patent Feb. 26, 2008

 

  1. 箇条書き項目 MnO2 powder for arsenic adsorption

Separation of arsenic from aqueous solutions