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Title: Nanosize electropositive fibrous adsorbent

Abstract

Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m.sup.2 /g have been fount to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. When combined into a composite filter with other fibers or particles they can filter bacteria and nano size particulates such as viruses and colloidal particles at high flux through the filter. Such filters can be used for purification and sterilization of water, biological, medical and pharmaceutical fluids, and as a collector/concentrator for detection and assay of mirobes and viruses. The alumina fibers are also capable of filtering sub-micron inorganic and metallic particles to produce ultra pure water. The fibers are suitable as a substrate for growth of cells. Macromolicules such as proteins may be separated from each other based on their electronegative charges.

Inventors:
;
Issue Date:
Research Org.:
~Individually Owned Patent
Sponsoring Org.:
USDOE
OSTI Identifier:
1175191
Patent Number(s):
6838005
Application Number:
10/177,709
Assignee:
Tepper, Frederick; Kaledin, Leonid
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Tepper, Frederick, and Kaledin, Leonid. Nanosize electropositive fibrous adsorbent. United States: N. p., 2005. Web.
Tepper, Frederick, & Kaledin, Leonid. Nanosize electropositive fibrous adsorbent. United States.
Tepper, Frederick, and Kaledin, Leonid. Tue . "Nanosize electropositive fibrous adsorbent". United States. https://www.osti.gov/servlets/purl/1175191.
@article{osti_1175191,
title = {Nanosize electropositive fibrous adsorbent},
author = {Tepper, Frederick and Kaledin, Leonid},
abstractNote = {Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m.sup.2 /g have been fount to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. When combined into a composite filter with other fibers or particles they can filter bacteria and nano size particulates such as viruses and colloidal particles at high flux through the filter. Such filters can be used for purification and sterilization of water, biological, medical and pharmaceutical fluids, and as a collector/concentrator for detection and assay of mirobes and viruses. The alumina fibers are also capable of filtering sub-micron inorganic and metallic particles to produce ultra pure water. The fibers are suitable as a substrate for growth of cells. Macromolicules such as proteins may be separated from each other based on their electronegative charges.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {1}
}

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Works referenced in this record:

Influence of Salts on Virus Adsorption to Microporous Filters
journal, July 2000


Adsorption of Viruses by Diatomaceous Earth Coated with Metallic Oxides and Metallic Peroxides
journal, July 1991


Concentration of poliovirus from tap water using positively charged microporous filters.
journal, January 1979


Removal of microorganisms from water by columns containing sand coated with ferric and aluminum hydroxides
journal, February 1999


Capture of latex beads, bacteria, endotoxin, and viruses by charge-modified filters.
journal, January 1980