DE2510467A1 - Filter materials of high adsorption - comprising cellulose and an additive consisting of or contg aluminium oxide - Google Patents
Filter materials of high adsorption - comprising cellulose and an additive consisting of or contg aluminium oxideInfo
- Publication number
- DE2510467A1 DE2510467A1 DE19752510467 DE2510467A DE2510467A1 DE 2510467 A1 DE2510467 A1 DE 2510467A1 DE 19752510467 DE19752510467 DE 19752510467 DE 2510467 A DE2510467 A DE 2510467A DE 2510467 A1 DE2510467 A1 DE 2510467A1
- Authority
- DE
- Germany
- Prior art keywords
- aluminum
- aluminum oxide
- filter material
- material according
- additive
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/02—Separating microorganisms from their culture media
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- Biomedical Technology (AREA)
- Virology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Tropical Medicine & Parasitology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
Filterwerkstoff Gegenstand des Hauptpatentes ist ein Filterwerkstoff zur Herstellung von Filterschichten, insbesondere von Filterplatten, mit einem Gemisch aus Zellstoffen und einem Zusatzstoff von hoher Adsorptionswirkung, bei dem der Zusatzstoff aus Aluminium-Hydroxid besteht bzw. Aluminium-Hydroxid enthält. Aluminium-Hydroxid adsorbiert infolge seiner stark positiven Ladung negativ geladene Teile, so daß Filterschichten, die aus dem erfindungsgemäßen Filterwerkstoff hergestellt sind, zum Ausfiltrieren von Hefen verwendet werden können. Derartige Filterschichten können deshalb anstelle der üblichen asbesthaltigen Filterschichten verwendet werden, wodurch die Gefahr gesundheitsschädlicher winflüsse durch in das Filtrat gelangende feinste Asbestfasern vermieden wird.Filter material The subject of the main patent is a filter material for the production of filter layers, in particular filter plates, with a mixture made of cellulose and an additive with a high adsorption effect, in which the The additive consists of aluminum hydroxide or contains aluminum hydroxide. Aluminum hydroxide adsorbs negatively charged parts due to its strong positive charge, so that Filter layers made from the filter material according to the invention, can be used to filter out yeasts. Such filter layers can therefore used instead of the usual asbestos-containing filter layers, whereby the risk of harmful wind flows from the finest in the filtrate Asbestos fibers are avoided.
Es hat sich gezeigt, daß die Aufgabe, einen Filterwerkstoff zur Herstellung von Filterschichten, insbesondere Filterplatten zu schaffen, bei welchem kein Asbest verwendet wird, erfindungsgemäß auch dadurch gelöst werden kann, daß anstelle von Aluminium-Hydroxid Aluminium-Oxid verwendet wird. Derartige Filterschichten ergeben nahezu gleiche Filterleistungen, da Aluminium-Oxid wie Aluminium-Hydroxid und Asbest eine starke positive Ladung und in ein wässriger Lösung/positives elektrokinetisches Potential (Zeta-Potentiâl) aufweist, so daß in den Filterschichten Hefen und negativ geladene Bakterien zurückgehalten werden. Eine entsprechende Wirkung kann erreicht werden, wenn der Zusatzstoff aus einem Gemisch aus Aluminium-Oxid und-Hydroxid besteht, da Aluminium-Oxid und Aluminium-Hydroxid positive Ladungen besitzen.It has been shown that the task of producing a filter material of filter layers, in particular filter plates, in which no asbestos is used, according to the invention can also be achieved in that instead of Aluminum hydroxide Aluminum oxide is used. Such filter layers result almost the same filter performance because aluminum oxide is the same as aluminum hydroxide and asbestos a strong positive charge and in an aqueous solution / positive electrokinetic Has potential (Zeta-Potentiâl), so that in the filter layers yeast and negative loaded Bacteria are retained. A corresponding effect can be achieved if the additive consists of a mixture of aluminum oxide and hydroxide consists of aluminum oxide and aluminum hydroxide as positive charges own.
Wenn der Zusatzstoff außer aus positiv geladenem Aluminium-Oxid bzw. Aluminium-Oxid und Aluminium-Hydroxid auch noch aus negativen Ladungsträgern, wie Aluminium-Silikat oder Calcium-Silikat besteht, kann die Filterleistung wesentlich erhöht werden. Dann können sowohl positiv als auch negativ geladene Verunreinigungen aus der zu filternden Flüssigkeit entfernt werden. Die negativ geladenen Aluminium- und Calcium-Silikate binden positiv geladene ttikroorganismen, so daß die Wirksamkeit dieser Filterschicht mit Gemischen aus Aluminiurii-Oxid und/oder -Hydroxid und Aluminium- oder Calcium-Silikat den asbesthaltigen Filterschichten gleichkommt und absolut sterile Filtrate sichergestellt sind. If the additive consists of positively charged aluminum oxide or Aluminum oxide and aluminum hydroxide also come from negative charge carriers, such as Aluminum silicate or calcium silicate can significantly improve the filter performance increase. Then there can be both positively and negatively charged impurities removed from the liquid to be filtered. The negatively charged aluminum and calcium silicates bind positively charged microorganisms, so that the effectiveness this filter layer with mixtures of aluminum oxide and / or hydroxide and aluminum or calcium silicate is equivalent to the asbestos-containing filter layers and absolutely sterile filtrates are ensured.
Die positive elektrische Ladung des Filterwerkstoffes und seine darauf beruhende Leistung kann durch Zusatz von Nassverfestigern, wie Epoxid-Harzen und/oder Polyäthylenimin und dergleichen erhöht werden. The positive electrical charge of the filter material and its on it Based performance can be achieved by adding wet strength agents such as epoxy resins and / or Polyethyleneimine and the like can be increased.
Für die Qualität der Filterschicht ist eine große wirksame Oberfläche von Bedeutung. Zur Herstellung derartiger Filterschichten muß Aluminium-Oxid so stark zerkleinert werden, daß es eine Korngröße von vorzugsweise o,5 bis 0,2/im hat.A large effective surface is required for the quality of the filter layer significant. To produce such filter layers, aluminum oxide must be so are greatly comminuted so that it has a grain size of preferably 0.5 to 0.2 / in Has.
Der Anteil des adsorbierenden Zusatzstoffes beträgt vorteilhaft 20 bis So %. Die Adsorptionswirkung des erfindungsgemäßen Filterwerkstoffes wird dadurch hervorgerufen, daß es sich bei den oben erwähnten Zusatzstoffen: Aluminium-Oxid, Aluminium-Hydroxid sowie Aluminium- und Calcium-Silikat und den Zellstoffen um Polyelektrolyte handelt, wobei primär ein Komplex aus Aluminium-Oxid und Aluminium-Silikat oder Calcium-Silikat bzw. Aluminium-Oxid- Aluminium (Calcium)-Silikat und Aluminium-llydroxid-Aluminium (Calcium)-Silikat entsteht. Diese werden durch überschüssige positive Ladungen des Aluminium-Oxids oder Aluminium-Hydroxids auf die negativ geladenen Zellstoffasern aufgezogen, wodurch über die ganze Filterschiaht der mittlere Porenradius verkleinert und ein starkes elektronisches Nikrofeld hervorgerufen wird. The proportion of the adsorbing additive is advantageously 20 until so%. The adsorption effect of the filter material according to the invention is thereby caused that the additives mentioned above are: aluminum oxide, Aluminum hydroxide as well as aluminum and calcium silicate and the cellulose around polyelectrolytes acts, whereby primarily a complex of aluminum oxide and aluminum silicate or Calcium silicate or aluminum oxide aluminum (calcium) silicate and aluminum hydroxide aluminum (Calcium) silicate is formed. These are due to excess positive Charges of aluminum oxide or aluminum hydroxide on the negatively charged Cellulose fibers pulled up, creating the mean pore radius over the entire filter layer and a strong electronic micro field is generated.
Damit bei diesem Vorgang eine möglichst vollständige Bindung der vorhandenen Ladungsträger erfolgt, müssen Aluminium-Oxid bzw.This means that the existing ones are bound as completely as possible during this process Load carrier takes place, aluminum oxide or
Aluminium-Oxid und Aluminium-Hydroxid und Calcium- oder Aluminium-Silikat in einem bestimmten Verhältnis vorliegen. Außerdem wirken sich verschiedene Einflußgrößen, wie Art und Aufschlußgrad des Zellstoffes, die Beschaffenheit des Produktionswassers sowie der Zusatz eines geeigneten Retentions - und Verfestigungsmittels auf den Vorgang aus.Aluminum oxide and aluminum hydroxide and calcium or aluminum silicate exist in a certain ratio. In addition, various influencing factors have an effect such as the type and degree of digestion of the pulp, the nature of the production water as well as the addition of a suitable retention and solidifying agent to the Process off.
Die Erfindung wird nachstehend anhand zweier Ausführungsbeispiele näher erläutert.The invention is explained below using two exemplary embodiments explained in more detail.
Erstes Ausführungsbeispiel: 32 g Sulfit-Zellstoff 16 g Aluminium-Oxid 3o ml o,5,#ige Polygallösung als Retentionsmittel 1 ml Naßverfestiger Zweites Ausführungsbeispiel: 23 g Sulfit-Zellstoff 9 g Sulfat-Zellstoff 10 g Aluminium-Oxid lo g Aluminium-Hydroxid 8 g Aluminium-Silikat 30 ml o,5%ige Polygallösung als Retentionsmittel 1 ml Naßverfestiger Filterwerkstoffe, die nach dem Ausführungsbeispiel 1 hergestellt sind, können zur Filtration von Hefe haltigen Flüssigkeiten, insbesondere von Bier, Wein usw verwendet werden. Während die nach dem Ausführungsbeispiel 2 hergestellten Filterwerkstoffe außer Hefe auch verschiedene Nikroorganismen zurückhalten und daher zur Sterilfiltration besonders geeignet sind. Versuche, die mit aus diesem Werkstoff gefertigten Filterschichten und unter Bedingungen, wie sie an Asbestfilterschichten herrschen, durchgeführt wurden, ergaben, daß die erfindungsgemäßen Filterschichten etwa 400so # gegenüber den asbesthaltigen Filterschichten überzogen nengenleistung pro Zeiteinheit wurden und bei einer Druckdifferenz von 2,5 atü noch absolut sterile Filtrate liefern. Asbesthaltige Filterschichten genügen im allgemeinen schon bei einer Druckdifferenz von mehr als 1,2 bis 1,5 atü den Anforderungen an die Sterilität nicht mehr.First embodiment: 32 g sulphite pulp 16 g aluminum oxide 3o ml o, 5, # ige polygal solution as retention aid 1 ml wet strengthening agent Second embodiment: 23 g sulphite pulp 9 g sulphate pulp 10 g aluminum oxide lo g aluminum hydroxide 8 g aluminum silicate 30 ml 0.5% polygal solution as retention agent 1 ml wet strength agent Filter materials that are made according to embodiment 1 can be used for Filtration of yeast-containing liquids, especially beer, wine, etc. used will. While the filter materials produced according to embodiment 2 apart from yeast also hold back various microorganisms and therefore for sterile filtration are particularly suitable. Try out using this material manufactured Filter sheets and under conditions such as those found on asbestos filter sheets, were carried out, showed that the filter layers according to the invention about 400 # Compared to the asbestos-containing filter layers, excessive performance per unit of time and deliver absolutely sterile filtrates at a pressure difference of 2.5 atü. Asbestos-containing filter layers are generally sufficient even with a pressure difference of more than 1.2 to 1.5 atmospheres no longer meet the sterility requirements.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752510467 DE2510467A1 (en) | 1975-03-11 | 1975-03-11 | Filter materials of high adsorption - comprising cellulose and an additive consisting of or contg aluminium oxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752510467 DE2510467A1 (en) | 1975-03-11 | 1975-03-11 | Filter materials of high adsorption - comprising cellulose and an additive consisting of or contg aluminium oxide |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2510467A1 true DE2510467A1 (en) | 1976-09-23 |
Family
ID=5940982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19752510467 Withdrawn DE2510467A1 (en) | 1975-03-11 | 1975-03-11 | Filter materials of high adsorption - comprising cellulose and an additive consisting of or contg aluminium oxide |
Country Status (1)
Country | Link |
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DE (1) | DE2510467A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2604885A1 (en) * | 1975-02-14 | 1976-08-26 | Filtrox Werk Ag | ASBESTOS-FREE FILTER LAYER |
EP0085917A2 (en) * | 1982-02-09 | 1983-08-17 | Amf Incorporated | Fibrous media containing millimicron-sized particles |
WO2003000407A1 (en) * | 2001-06-22 | 2003-01-03 | Argonide Corporation | Sub-micron filter |
US7390343B2 (en) | 2005-09-12 | 2008-06-24 | Argonide Corporation | Drinking water filtration device |
US7601262B1 (en) | 2001-06-22 | 2009-10-13 | Argonide Corporation | Sub-micron filter |
EP2281620A1 (en) * | 2003-03-13 | 2011-02-09 | Applied Nanoscience Inc. | Filtering device incorporating nanoparticles |
WO2014004066A1 (en) * | 2012-06-27 | 2014-01-03 | Argonide Corporation | Aluminized silicious sorbent and water purification device incorporating the same |
DE102014101187A1 (en) * | 2014-01-31 | 2015-08-06 | Grünbeck Wasseraufbereitung GmbH | Filter for the sterilization of water |
DE102014105532A1 (en) * | 2014-04-17 | 2015-10-22 | Grünbeck Wasseraufbereitung GmbH | Water outlet fitting with filter, fitting for connection to a water outlet fitting and method for operating a water outlet fitting |
-
1975
- 1975-03-11 DE DE19752510467 patent/DE2510467A1/en not_active Withdrawn
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2604885A1 (en) * | 1975-02-14 | 1976-08-26 | Filtrox Werk Ag | ASBESTOS-FREE FILTER LAYER |
EP0085917A2 (en) * | 1982-02-09 | 1983-08-17 | Amf Incorporated | Fibrous media containing millimicron-sized particles |
EP0085917A3 (en) * | 1982-02-09 | 1984-03-28 | Amf Incorporated | Fibrous media containing millimicron-sized particles |
US7601262B1 (en) | 2001-06-22 | 2009-10-13 | Argonide Corporation | Sub-micron filter |
WO2003000407A1 (en) * | 2001-06-22 | 2003-01-03 | Argonide Corporation | Sub-micron filter |
US6838005B2 (en) | 2001-06-22 | 2005-01-04 | Frederick Tepper | Nanosize electropositive fibrous adsorbent |
EP2281621A1 (en) * | 2003-03-13 | 2011-02-09 | Applied Nanoscience Inc. | Filtering device incorporating nanoparticles |
EP2281620A1 (en) * | 2003-03-13 | 2011-02-09 | Applied Nanoscience Inc. | Filtering device incorporating nanoparticles |
US7390343B2 (en) | 2005-09-12 | 2008-06-24 | Argonide Corporation | Drinking water filtration device |
WO2014004066A1 (en) * | 2012-06-27 | 2014-01-03 | Argonide Corporation | Aluminized silicious sorbent and water purification device incorporating the same |
US9309131B2 (en) | 2012-06-27 | 2016-04-12 | Argonide Corporation | Aluminized silicious powder and water purification device incorporating same |
US9707538B2 (en) | 2012-06-27 | 2017-07-18 | Argonide Corporation | Aluminized silicious powder and water purification device incorporating same |
DE102014101187A1 (en) * | 2014-01-31 | 2015-08-06 | Grünbeck Wasseraufbereitung GmbH | Filter for the sterilization of water |
EP2902086B1 (en) | 2014-01-31 | 2017-11-01 | Grünbeck Wasseraufbereitung GmbH | Filter for the sterilization of water |
EP2902086B2 (en) † | 2014-01-31 | 2020-05-06 | Grünbeck Wasseraufbereitung GmbH | Filter for the sterilization of water |
DE102014105532A1 (en) * | 2014-04-17 | 2015-10-22 | Grünbeck Wasseraufbereitung GmbH | Water outlet fitting with filter, fitting for connection to a water outlet fitting and method for operating a water outlet fitting |
DE102014105532B4 (en) * | 2014-04-17 | 2016-12-15 | Grünbeck Wasseraufbereitung GmbH | Water outlet fitting with filter, fitting for connection to a water outlet fitting and method for operating a water outlet fitting |
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