METHOD OF TREATING A BIOMASS MATERIAL

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The present inventions are made from a viewpoint of such problems of the prior art, it is an object of the present invention to provide a good biomass. A method of treating a biomass material according to the present invention is characterized in that arsenic, antimony, selenium, chromium and/or copper contained in a biomass material is (are) adsorbed and eliminated by the use of an adsorbent containing a rare-earth metal compound. The method is characterized in that after the above arsenic, antimony and/or selenium is (are) selectively adsorbed and eliminated, further the above chromium and/or copper is (are) selectively adsorbed and eliminated.