Patent ID: 9611153
Date: 2017-04-04
CPC Classifications: B01D,C02F,C08B

Claim:
1. A method of preparing a point-of-use water purification system comprising copper-containing paper, the method comprising: contacting an absorbent cellulose blotting paper or filter paper with an alkaline solution of copper hydroxide and soaking the paper in said solution, wherein copper is sorbed onto the paper; wherein the alkaline copper hydroxide solution is prepared by adding 1 M NaOH to a 0.32 M CuSO removing the paper from the copper hydroxide solution and then contacting the paper with deionized water to remove excess base; following removing the excess base, reducing copper ions embedded in the paper by contacting the paper with an ascorbic acid solution; removing the paper from ascorbic acid solution; and washing the paper with deionized water, thereby preparing the point-of-use water purification system.