US Government as Represented by the Secretary of the Army

University of Arkansas

The Uab Research Foundation (the University of Alabama at Birmingham)

Christopher Scott Griggs

Jose Mattei-Sosa

Luke Gurtowski

Victor F Medina

Lauren F Greenlee

Mojtaba Abolhassani

Brooke Petery

Robin Don Rogers

Richard Patrick Swatloski

Gabriela Gurau

Patrick S Barber

Manoj K Shukla

David P Martin

Terrance Opichka

Jonathan R Bonner

A composition of five parts by mass of chitosan and one part graphene oxide is suspended in water. The composition may be used to form filtration layers of any size or shape and may be reinforced by additional layers. The composition may be used to construct a large filtration apparatus of any size or shape and may be used to form highly resilient, antimicrobial structures and surfaces for a variety of applications.

Advanced filtration membranes using chitosan and graphene oxide

This invention relates generally to a chitosan-graphene oxide membrane and process of making the same. The nanocomposite membrane can filter water and remove contaminants without fouling like other commercially-available polymer-based water filters. The membrane can be used as a flat sheet filter or can be engineered in a spiral filtration module. The membrane is scalable and tunable for many water contaminants including pharmaceuticals, pesticides, herbicides, and other organic chemicals. The membrane uses chitosan, which is low-cost, renewable biopolymer typically considered to be a waste product and the second most abundant biopolymer on Earth, thus making the membrane an environmentally-friendly product choice.

Chitosan-graphene oxide membranes

The invention is a renewable adsorbent material, amine-functionalized chitin (AFC) that can remove the following munitions compounds from solution while providing a concentration-dependent color change: NTO, DNAN, and TNT. Adsorption of the munitions constituents can be adjusted by pH; neutral pH provides maximum adsorption. NTO can desorb from the AFC at pH levels of 2 and 12; DNAN and TNT remain attached to AFC once adsorbed.

In situ testing apparatus for detecting and removing munitions compounds from water

Chitosan-graphene oxide membranes and process of making the same

A method of creating storing and using recycled graphene oxide materials to create highly resilient objects having desirable qualities of graphene.

Method of recycling chitosan and graphene oxide compound

Disclosed are methods for electrospinning chitinous biomass solution to form chitin fibers, using ionic liquids or other ion-containing liquids as solvent. Chitin fibers produced thereby and articles containing such chitin fibers are also disclosed. The chitin fiber thus obtained has very high surface area and improved strength over currently commercially available chitin materials.

Process for electrospinning chitin fibers from chitinous biomass solution

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Vicksburg, MS, United States of America

Christopher Scott Griggs