Back to results
US 12,384,856 B2Granted
Compositions and methods for removal of negatively charged impurities using metal-cellulose fiber composite
AssigneeThe Research Foundation for The State University of New York
InventorsBenjamin S. Hsiao, Sunil Sharma, Priyanka R. Sharma, Ken I. Johnson
Life of this patent
Estimating the term…
Abstract
The present disclosure provides cellulose/metal composites and their use in removing impurities from liquids, including water. Carboxylated nanocelluloses are combined with metal ions and the resulting composite may be contacted with a liquid, including water, to remove impurities therefrom.
Claims18
A method for removing negatively charged impurities from a liquid, comprising:
- contacting the liquid containing a negatively charged impurity that is fluoride with a composite including:
- carboxylated cellulose nanofibers;
- and
- positively charged aluminum ions, wherein ionic interactions between the carboxylated cellulose nanofibers and the positively charged aluminum ions form the composite.
1 more element
A method for removing negatively charged impurities from a liquid, comprising:
- contacting the liquid containing a negatively charged impurity that is fluoride with a composite including:
- carboxylated cellulose nanofibers;
- and
- positively charged aluminum ions, wherein ionic interactions between oxygen atoms of at least one of a hydroxyl group or a carboxylate group of the carboxylated cellulose and the positively charged aluminum ions form the composite.
1 more element
Dependencies are inferred from the claim text.