Agricultural Utilization Research Institute

University of Minnesota

Other

Pet Care Systems, Inc.

Jack Edgar Johnson

Ling Tony Chen

Rongsheng Roger Ruan

Paul Bradley Addis

Brock M Lundberg

Lin Gu

Mike Hughes

Lun Yi

Li Xu

Alan Doeringg

Alan R Doering

Charanjeet Kaur Wadhawan

Alan Doering

The present invention comprises an improved method for refining cellulose that produces a highly refined cellulosic material. The method comprises soaking raw material in a mild NaOH using reduced temperatures and pressures, and refining the material with a plate refiner so that a waste water stream is reduced in volume and has a pH within a range of 8 to 9. The present invention also comprises a HRC gel having a lignin concentration of at least about one (1)% by weight, and a water retention capacity of about 25 to at least about 56 g HO/g dry HRC.

Cellulose fiber-based filters

A species of bean,L., is pelleted, crumbled and sieved to a desired size. A sorbent produced therefrom has excellent sorbency and clumping, and is consequently well-suited for application as a scoopable animal litter. Alternative applications include, but are not limited to, industrial, commercial and residential sorbents, and high nitrogen content tackifiers suitable for hydro-seeding and other application.

Sorbent and applications

Cellulose fiber-based compositions and their method of manufacture

The present invention pertains to a natural product litter composition as well as methods of preparing and using a natural product litter as a sorbent for liquids. The sorbent contains 1% to 50% by weight wood particles and 50% to 99% by weight ground grain. The sorbency of a ground grain litter can be improved by pelletization and crumbling. Addition of up to 50% of wood particles to a ground grain litter further enhances the sorbency while maintaining suitable swelling and clumping characteristics.

Ground grain animal litter

An improved method for refining cellulose that produces a highly refined cellulosic material comprising soaking raw material in a mild NaOH using reduced temperatures and pressures, and refining the material with a plate refiner so that a waste water stream is reduced in volume and has a pH within a range of 8 to 9. Also, a HRC gel having a lignin concentration of at least about one (1)% by weight, and a water retention capacity of about 25 to at least about 56 g H O/g dry HRC is provided.

A process and materials are described in which highly refined celleuloise fibers are broken down into microfibers and further processed into compositions, films. coatings and solid materials which are biodegradable and even edible. The process for the formation of hardenable compositions may comprise:providing a composition comprising non-wood cellulose fiber, 36. mechanically reducing the size of the non-wood cellulose fiber to less than 2 mm, reducing the amount of binding of microfibers by lignin within said non-wood cellulose fibers present in said composition comprising cellulose fiber to form a first fiber product, providing pressure of at least 300 psi to said first fiber product while it is in the presence of a liquid, and removing said pressure within a time interval which will cause said cellulose fiber to break down into a second fiber product comprising microfibers in said liquid.

Cellulose fiber based compositions and film and the process for their

Growing community of inventors

Waseca, MN, United States of America

Jack Edgar Johnson