GB1043616A - Coated filter aid and improved filtration method - Google Patents

Coated filter aid and improved filtration method

Info

Publication number
GB1043616A
GB1043616A GB8872/64A GB887264A GB1043616A GB 1043616 A GB1043616 A GB 1043616A GB 8872/64 A GB8872/64 A GB 8872/64A GB 887264 A GB887264 A GB 887264A GB 1043616 A GB1043616 A GB 1043616A
Authority
GB
United Kingdom
Prior art keywords
polymer
filter aid
coated
dewatering
slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8872/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US263417A priority Critical patent/US3242073A/en
Priority to US343207A priority patent/US3352424A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1043616A publication Critical patent/GB1043616A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D15/00Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D37/00Processes of filtration
    • B01D37/02Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D37/00Processes of filtration
    • B01D37/03Processes of filtration using flocculating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/103Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • B01J20/106Perlite
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/14Diatomaceous earth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26Synthetic macromolecular compounds
    • B01J20/262Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/32Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204Inorganic carriers, supports or substrates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/32Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3268Macromolecular compounds
    • B01J20/3272Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00Aspects relating to sorbent materials
    • B01J2220/50Aspects relating to the use of sorbent or filter aid materials
    • B01J2220/58Use in a single column

Abstract

A material having an electronegatively charged surface, e.g diatomaceous earth, charcoal, perlite, sand, asbestos, cellulose pulp, fuller's earth, or mixtures thereof, is given at least a partial coating of an alkyleneimine polymer, a polyalkylene polyamine having a molecular weight of at least 1000, or a polymer of vinyl benzyl trimethyl ammonium chloride, and the coated product is an improved filter aid material. The material preferably contains from 0.01 to 0.5 weight per cent of the polymer and a preferred polymer is polyethyleneimine. The above filter aid material may be used for removing suspended matter from gaseous or liquid media, e.g. air or water, and is used as a pre-coat material on a filter septum, or is formed into a slurry with the contaminated liquid before being submitted to filtration. This filter aid material is particularly useful in removing suspended matter containing micro-organisms from fluid media. In an example, diatomaceous earth is coated with a polyethylenepolyamine polymer (mol. weight about 200,000) by stirring a slurry of this material in an aqueous solution of the polymer for 30 minutes, dewatering, reslurrying and dewatering three times, using de-ionized water, and then drying for 24 hours at ambient temperature.ALSO:A material having an electronegatively charged surface, e.g diatomaceous earth, charcoal, perlite, sand, asbestos, cellulose pulp, fullers earth, or mixtures thereof, is given at least a partial coating of an alkyleneimine polymer, a polyalkylene polyamine having a molecular weight of at least 1000, or a polymer of vinyl benzyl trimethyl ammonium chloride, and the coated product is an improved filter aid material. The material preferably contains from 0.01 to 0.5 weight per cent of the polymer and a preferred polymer is polyethyleneimine. The above filter aid material may be used for removing suspended matter from gaseous or liquid media, e.g. air or water, and is used as a pre-coat material on a filter septum, or is formed into a slurry with the contaminated liquid before being submitted to filtration. This filter aid material is particularly useful in removing suspended matter containing micro-organisms from fluid media. In an example, diatomaceous earth is coated with a polethylenepolyamine polymer (Mol. Wt. about 200,000) by stirring a slurry of this material in an aqueous solution of the polymer for 30 minutes, dewatering, reslurrying and dewatering three times using deionized water, and then drying for 24 hrs at ambient temperature.
GB8872/64A 1963-03-07 1964-03-03 Coated filter aid and improved filtration method Expired GB1043616A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US263417A US3242073A (en) 1963-03-07 1963-03-07 Removal of microorganisms from fluids
US343207A US3352424A (en) 1964-02-07 1964-02-07 Coated filter aids

Publications (1)

Publication Number Publication Date
GB1043616A true GB1043616A (en) 1966-09-21

Family

ID=26949838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8872/64A Expired GB1043616A (en) 1963-03-07 1964-03-03 Coated filter aid and improved filtration method

Country Status (4)

Country Link
BE (1) BE644772A (en)
DE (1) DE1227426B (en)
GB (1) GB1043616A (en)
NL (1) NL6402307A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550464A1 (en) * 1983-08-13 1985-02-15 Seitz Filter Werke FILTRATION LAYER EXAMPLE OF ASBESTOS
GB2268173A (en) * 1992-06-30 1994-01-05 Thames Water Utilities Filter medium
EP0597542A1 (en) * 1992-11-09 1994-05-18 Akzo Nobel N.V. Adsorbent compositions and methods of manufacture
WO2005089931A2 (en) * 2004-03-17 2005-09-29 Advanced Minerals Corporation A mercury adsorbent composition, process of making same and method of separating mercury from fluids
EP3509983A4 (en) * 2016-09-08 2020-05-06 B.G. Negev Technologies and Applications Ltd., at Ben-Gurion University Porous mineral nucleus and a metal shell

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH566942A5 (en) * 1972-05-10 1975-09-30 Ciba Geigy Ag
GB2043734B (en) * 1979-03-01 1983-08-17 Amf Inc Filter and method of making same
US4594158A (en) * 1981-09-03 1986-06-10 Rohm And Haas Filter aid materials bearing anion exchange resins
US4523995A (en) * 1981-10-19 1985-06-18 Pall Corporation Charge-modified microfiber filter sheets
DE4446122A1 (en) * 1994-12-22 1996-06-27 Sued Chemie Ag Adsorbent material for removal of anionic cpds.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2247711A (en) * 1941-07-01 Sterilization of liquids
DE594561C (en) * 1932-02-25 1934-03-19 Julius Ruppert Zink Packing for filter media made of active carbon
DE694528C (en) * 1936-02-04 1940-08-02 Seitz Werke Gmbh Filter press

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550464A1 (en) * 1983-08-13 1985-02-15 Seitz Filter Werke FILTRATION LAYER EXAMPLE OF ASBESTOS
GB2145011A (en) * 1983-08-13 1985-03-20 Seitz Filter Werke Filter
GB2268173A (en) * 1992-06-30 1994-01-05 Thames Water Utilities Filter medium
EP0597542A1 (en) * 1992-11-09 1994-05-18 Akzo Nobel N.V. Adsorbent compositions and methods of manufacture
WO2005089931A2 (en) * 2004-03-17 2005-09-29 Advanced Minerals Corporation A mercury adsorbent composition, process of making same and method of separating mercury from fluids
WO2005089931A3 (en) * 2004-03-17 2005-12-08 Advanced Minerals Corp A mercury adsorbent composition, process of making same and method of separating mercury from fluids
EP3509983A4 (en) * 2016-09-08 2020-05-06 B.G. Negev Technologies and Applications Ltd., at Ben-Gurion University Porous mineral nucleus and a metal shell

Also Published As

Publication number Publication date
NL6402307A (en) 1964-09-08
DE1227426B (en) 1966-10-27
BE644772A (en) 1964-09-07

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