Nitrohumic acid-containing adsorbents and process for...

Details Nitrohumic acid-containing adsorbents and process for... Nitrohumic acid-containing adsorbents and process for...

B - Operations, Transporting

01

D

252/20, 252/23,

B01D 15/00 (2006.01) C02F 1/28 (2006.01) C02F 3/34 (2006.01)

Patent

CA 1036575

ABSTRACT OF THE DISCLOSURE New adsorbents comprise granules of a mixture of nitrohumic acid and one or more proteins. These adsorbents are utilizable effectively for adsorbing heavy metals and oils contained in water. They are produced by either a process wherein a mixture of nitrohumic acid and a protein is kneaded with an aqueous solution of alkali and the kneaded mixture is first subjected to an acid treatment and then shaped into granules, or a process wherein nitrohumic acid and a protein are dissolved in an aqueous solution of alkali, the solution is acidified to form a precipitate and then the precipitate is separated and shaped into granules. The granular products thus obtained can be further improved in mechanical strength by means of a heat treatment.

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