Method and device for purifying water

Details Method and device for purifying water Method and device for purifying water

B - Operations, Transporting

01

J

152/11, 252/31

B01J 20/26 (2006.01) B01D 15/00 (2006.01) B01J 20/28 (2006.01) B01J 45/00 (2006.01) C02F 1/28 (2006.01)

Patent

CA 2019461

Abstract of the Disclosure A method is provided herein for removing heavy metals and negatively-charged materials from water. The method includes contacting the water with an adsorbent cloth or fabric at least part of which is cellulosic, which has been pretreated with an alka- li, which was then preferably heated mildly until it was dry, followed by washing, upon which high mole- cular weight polyethyleneimine has been adsorbed and fixed thereon with a cross-linking agent. Examples of suitable such cross-linking agents include bifunctional or multifunctional epoxy cross-linking agents, e.g., glutaraidehyde, epichlorohydrin, 1,4- butandioldiglycidyl ether, 1,2-ethanedioldiglycidyl ether, 1,3-diglycidylglycerol, triglycidylglycerol, pentaerythritol, tetraglycidyl ether, etc.

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