Back to results
US 2026/0308078 A1Published application
Oxidized cellulosic materials and method of manufacturing same
AssigneeThe Research Foundation for The State University of New York
InventorsBenjamin S. HSIAO, Ken I. JOHNSON, Rasel DAS, Grenalynn C. ILACAS
Life of this patent
Estimating the term…
Abstract
The present disclosure provides methods for treating biowaste and similar waste sources with nitric acid. Where the waste source includes plant-based fibrous materials, animal and food waste, the present methods provide for the extraction and use of nanostructured cellulose (nanocellulose) with an anionic surface charge for adsorption of cationic contaminants such as ammonium, and selective environmentally friendly methods for the functionalization of cellulosic biomass.
Claims16
A method comprising:
- contacting a biowaste source with nitric acid;
- optionally contacting the biowaste source and nitric acid with sodium nitrite;
- heating the biowaste source, the nitric acid, and the optional sodium nitrite to a temperature of from about 25° C. to about 100° C. to form a gellable nanocellulose suspension;
- and
- recovering the nanocellulose suspension.
2 more elements
Dependencies are inferred from the claim text.