Water filter materials and water filters and processes for using the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-039/00
B01D-039/14
B01D-035/00
B01D-027/00
출원번호
UP-0464210
(2003-06-18)
등록번호
US-7614506
(2009-11-23)
발명자
/ 주소
Mitchell, Michael Donovan
Collias, Dimitris Ioannis
Bjorkquist, David William
Zaveri, Piyush Narendra
Woolley, Matthew Morgan
출원인 / 주소
PUR Water Purification Products Inc.
대리인 / 주소
Clay, Cynthia L.
인용정보
피인용 횟수 :
8인용 특허 :
40
초록
A filter for providing potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a plurality of mesoporous, basic, and reduced-oxygen activated carbon filter particles.
대표청구항▼
What is claimed is: 1. A filter for providing potable water, comprising: (a) a housing having an inlet and an outlet; and (b) a filter material disposed within said housing formed at least in part from a plurality of filter particles consisting of mesoporous activated carbon, wherein; (i) the sum o
What is claimed is: 1. A filter for providing potable water, comprising: (a) a housing having an inlet and an outlet; and (b) a filter material disposed within said housing formed at least in part from a plurality of filter particles consisting of mesoporous activated carbon, wherein; (i) the sum of the mesopore and macropore volumes of said filter particles is between about 0.2 mL/g and about 2 mL/g; wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm; (ii) the total pore volume of said filter particles is greater than about 0.4 mL/g and less than about 3 mL/g; and (iii) the ratio of the sum of the mesopore and macropore volumes to the total pore volume of said filter particles is greater than about 0.3; wherein said filter is operable to remove microorganisms from water flowing into said inlet and out of said outlet; and wherein said filter has a Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log. 2. The filter of claim 1, wherein the sum of the mesopore and the macropore volumes of said plurality of filter particles is between about 0.4 mL/g and about 1 mL/g. 3. The filter of claim 1, wherein said plurality of filter particles has a Bacteria Removal Index of greater than about 99%, and a Viruses Removal Index of greater than about 90%. 4. The filter of claim 1, wherein said filter material is disposed in said housing for axial flow, wherein said filter material has a face area of at least 1.5 in.2 and a filter depth of at least 0.25 in. 5. The filter of claim 1, wherein said filter material is disposed in said housing for radial flow, wherein said filter material has an outside diameter of at least 0.5 in., an inside diameter of at least 0.25 in., a filter depth of at least 0.125 in., and a length of at least 0.5 in. 6. The filter of claim 1, wherein said filter material has an average fluid residence time of at least 3 s. 7. The filter of claim 1, wherein said filter material has a single-collector efficiency, η, of between about 0.005 and 0.25, and a filter coefficient, λ, between about 40 m-1 and about 14,000 m-1. 8. A filter for providing potable water, comprising: (a) a housing having an inlet and an outlet; and (b) a filter material disposed within said housing formed at least in part from a plurality of filter particles consisting of mesoporous and basic activated carbon, wherein: (i) the sum of the mesopore and macropore volumes of said filter particles is between about 0.2 mL/g and about 2 mL/g; wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm; (ii) the total pore volume of said filter particles is greater than about 0.4 mL/g and less than about 3 mL/g; and (iii) the ratio of the sum of the mesopore and macropore volumes to the total pore volume of said filter particles is greater than about 0.3; wherein said filter is operable to remove microorganisms from water flowing into said inlet and out of said outlet; and wherein said filter has a Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log. 9. The filter of claim 8, wherein said plurality of filter particles has a point of zero charge between about 9 and about 12 and an Oxidation Reduction Potential between about 290 mV and about 175 mV. 10. A filter for providing potable water, comprising: (a) a housing having an inlet and an outlet; and (b) a filter material disposed within said housing formed at least in part from a plurality of filter particles consisting of mesoporous, basic, and reduced-oxygen activated carbon, wherein: (i) the sum of the mesopore and macropore volumes of said filter particles is between about 0.2 mL/g and about 2 mL/g; wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm; (ii) the total pore volume of said filter particles is greater than about 0.4 mL/g and less than about 3 mL/g; and (iii) the ratio of the sum of the mesopore and macropore volumes to the total pore volume of said filter particles is greater than about 0.3; wherein said filter is operable to remove microorganisms from water flowing into said inlet and out of said outlet; and wherein said filter has a Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log. 11. The filter of claim 10, wherein said plurality of filter particles has a point of zero charge of greater than about 8, and an Oxidation Reduction Potential of less than about 325 mV. 12. The filter of claim 10, wherein said plurality of filter particles has a bulk oxygen percentage by weight of less than about 1.2%. 13. The filter of claim 1, wherein said filter further comprises information which communicates to a user that the filter may be used to remove microorganisms. 14. The filter of claim 1, wherein at least a portion of said plurality of filter particles are coated with a secondary material. 15. The filter of claim 14, wherein said secondary material is selected from the group consisting of silver, a silver-containing material, a cationic polymer, and mixtures thereof. 16. The filter of claim 1, wherein said filter material is further formed at least in part from other materials selected from the group consisting of activated carbon powders, activated carbon granules, activated carbon fibers, zeolites, activated alumina, activated magnesia, diatomaceous earth, silver particles, activated silica, hydrotalcites, glass, polyethylene fibers, polypropylene fibers, ethylene maleic anhydride copolymer fibers, sand, clay, and mixtures thereof. 17. The filter of claim 1, wherein the sum of the mesopore and macropore volume of said filter particles is greater than about 0.4 mL/g and less than about 1 mL/g. 18. The filter of claim 1, wherein the total pore volume of said filter particles is greater than about 0.4 mL/g and less than about 2 mL/g. 19. The filter of claim 1, wherein the pore volume is at least 0.03 mL/g for pore diameters between about 4 nm and about 6 nm. 20. The filter of claim 1, wherein said filter has a Filter Bacteria Log Removal of greater than about 4 logs, and a Filter Viruses Log Removal of greater than about 2 logs. 21. The filter of claim 20, wherein said filter has a Filter bacteria Log Removal of greater than about 6 logs, and a Filter Viruses Log Removal of greater than about 4 logs. 22. The filter of claim 1, wherein said filter has a single-collector, efficiency, η, of greater than about 0.002. 23. The filter of claim 1, wherein said filter particles are wood-based activated carbon particles having a Brunauer, Emmet, and Teller (BET) specific surface area between about 1,000 m2/g and about 2,000 m2/g, a total pore volume between about 0.8 mL/g and about 2 mL/g, and the sum of the mesopore and macropore volumes is between about 0.4 mL/g and about 1.5 mL/g. 24. The filter of claim 8, wherein said filter particles are wood-based activated carbon particles having a Brunauer, Emmet, and Teller (BET) specific surface area between about 1,000 m2/g and about 2,000 m2/g, a total pore volume between about 0.8 mL/g and about 2 mL/g, and the sum of the mesopore and macropore volumes is between about 0.4 mL/g and about 1.5 mL/g. 25. The filter of claim 8, wherein said plurality of filter particles has a point of zero charge greater than about 8, and an Oxidaton Reduction Potential less than about 400 mV.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (40)
Derbyshire Francis J. ; Jagtoyen Marit, Activated carbon and process for making same.
Gordon ; Jr. Edward C. (7475 SW. Cherry St. Tigard OR 97221) Gordon Glen D. (7475 SW. Cherry St. Tigard OR 97221), Effluent water filter device and method.
Mitchell, Michael Donovan; Owens, Blair Alex; Collias, Dimitris Ioannis; Wnuk, Andrew Julian, Filters and filter materials for the removal of microorganisms and processes for using the same.
Lieberman Alexander I. (St. Petersburg RUX) Pimenov Alexander V. (St. Petersburg RUX) Gorokhov Nicholas Y. (St. Petersburg NY RUX) Shmidt Joseph L. (Brooklyn NY) Lieberman Leonid I. (St. Petersburg R, Manufacture of activated carbon fiber.
Itoga Kiyoshi (Hyogo JPX) Tsutsumi Yoshio (Osaka JPX) Tsuji Masanori (Hyogo JPX) Tatebayashi Ayako (Osaka JPX), Nitrogen-containing molecular sieving carbon, a process for preparing the same and use thereof.
Dussert Bertrand W. (Pittsburgh PA) Farmer Richard W. (Gibsonia PA) Hayden Richard A. (Pittsburgh PA), Oxidized activated carbon for the control of pH and alkalinity in water treatment applications.
Schmitt ; Jr. ; Joseph Lawrence ; Waker ; Jr. ; Philip Leroy ; Castelli on ; George Augustus, Use of carbon particulates with controlled density as adsorbents.
Updyke, Palmer David; Fulkerson, Barry; De Leon De Leon, Amaury; Bayly, Michelle, Universal portable artificial kidney for hemodialysis and peritoneal dialysis.
Bahm, Jeannine Rebecca; Pearks, Andrew Thomas; Vidal, Guillermo Matias; Collias, Dimitris Ioannis; Mitchell, Michael Donovan; Astle, Robert E.; Faye, Katharine L. K.; Governal, Robert Andrew; Hamlin, Thomas J.; Lucht, Rebecca A.; Patel, Hemang, Water filter materials and water filters containing a mixture of microporous and mesoporous carbon particles.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.