Sub-micron filter
Abstract
Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m.sup.2/g have been found 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 microbes 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. Macromolecules such as proteins may be separated from each other based on their electronegative charges.
- Inventors:
-
- Sanford, FL
- Port Orange, FL
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1001798
- Patent Number(s):
- 7601262
- Application Number:
- 11/023,281
- Assignee:
- Argonide Corporation (Sanford, FL)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Tepper, Frederick, and Kaledin, Leonid. Sub-micron filter. United States: N. p., 2009.
Web.
Tepper, Frederick, & Kaledin, Leonid. Sub-micron filter. United States.
Tepper, Frederick, and Kaledin, Leonid. Tue .
"Sub-micron filter". United States. https://www.osti.gov/servlets/purl/1001798.
@article{osti_1001798,
title = {Sub-micron filter},
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 found 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 microbes 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. Macromolecules such as proteins may be separated from each other based on their electronegative charges.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {10}
}
Works referenced in this record:
Concentration of viruses from water by using cellulose filters modified by in situ precipitation of ferric and aluminum hydroxides.
journal, January 1985
- Farrah, S. R.; Preston, D. R.
- Applied and Environmental Microbiology, Vol. 50, Issue 6
Cell Immobilization by Adsorption to Glass Fibre Mats
book, January 1994
- DiCosmo, Frank; Tanaka, Hideo; Neumann, A. Wilhelm
- Immobilized Biosystems
Concentration of poliovirus from tap water using positively charged microporous filters.
journal, January 1979
- Sobsey, M. D.; Jones, B. L.
- Applied and Environmental Microbiology, Vol. 37, Issue 3
Removal of microorganisms from water by columns containing sand coated with ferric and aluminum hydroxides
journal, February 1999
- Lukasik, Jerzy; Cheng, Yueh-Fung; Lu, Fuhua
- Water Research, Vol. 33, Issue 3
Capture of latex beads, bacteria, endotoxin, and viruses by charge-modified filters.
journal, January 1980
- Hou, K.; Gerba, C. P.; Goyal, S. M.
- Applied and Environmental Microbiology, Vol. 40, Issue 5
Ultra-fine powder by wire explosion method
journal, May 2001
- Kwon, Young-Soon; Jung, Yong-Hun; Yavorovsky, N. A.
- Scripta Materialia, Vol. 44, Issue 8-9
Influence of Salts on Virus Adsorption to Microporous Filters
journal, July 2000
- Lukasik, Jerzy; Scott, Troy M.; Andryshak, Diane
- Applied and Environmental Microbiology, Vol. 66, Issue 7
Synthesis of Short Fibrous Boehmite Suitable for Thermally Stabilized Transition Aluminas Formation
journal, August 1998
- Khalil, Kamal M. S.
- Journal of Catalysis, Vol. 178, Issue 1
Electrostatic N-95 Respirator Filter Media Efficiency Degradation Resulting from Intermittent Sodium Chloride Aerosol Exposure
journal, January 2000
- Moyer, Ernest S.; Bergman, M. S.
- Applied Occupational and Environmental Hygiene, Vol. 15, Issue 8
Electrostatic Respirator Filter Media: Filter Efficiency and Most Penetrating Particle Size Effects
journal, January 2000
- Martin, Stephen B.; Moyer, Ernest S.
- Applied Occupational and Environmental Hygiene, Vol. 15, Issue 8
An apparatus for the study of airborne infection
journal, March 1952
- Henderson, David W.
- Journal of Hygiene, Vol. 50, Issue 1
The Long-Term Performance of Electrically Charged Filters in a Ventilation System
journal, July 2004
- Raynor, Peter C.; Chae, Soo Jae
- Journal of Occupational and Environmental Hygiene, Vol. 1, Issue 7