ION EXCHANGE PRODUCT AND MANNER OF USE

摘要

A cellulosic substrate is caused to have selective ion-exchange properties by way of contact with an aqueous protonated PEI solution followed by thermal treatment. The substrate is preferably in the form of a paper or a paper pulp which may be added to and retrieved from a body of polluted water.

主权项

1) A selective ion exchange product comprised of a cellulosic substrate containing 5 to 30 percent by weight of chemically bound PEI or derivative thereof and capable of absorbing dissolved ionized toxic metal species from water containing greater amounts of non-toxic species, said absorption occurring at a reaction speed faster than 8 seconds, and said product having an absorption capacity greater than 1.0 meq of absorbed metal species per dry gram of said product.