摘要:
The present invention provides cationic exchange resin that maintains a high exchange speed of polyvalent ions in addition to monovalent ions without agglomeration occurring in spite of surface coating even when mixed bed ion-exchange resin is used. The cationic exchange resin is modified with a water-soluble cationic polymer electrolyte having an intramolecular cyclic quaternary ammonium salt structure.
摘要:
The invention relates to a method for separating fluorinated acids, in particular perfluorocarboxylic acids and perfluorosulfonic acids or the salts thereof from diluted aqueous solutions with the aid of anion exchangers.
摘要:
A method of manufacturing a water treatment apparatus having one or more chambers comprising the step of: filling at least one chamber with ion exchanger resin; wherein at least one ion exchanger resin is dry. Preferably, the dry ion exchange resin has a water content of 0-40 wt%, preferably 0-20 wt%, and more preferably 0-10 wt%, such that the volume of the dry ion exchange resin is 25-50 vol% less than the volume of the same ion exchange resin in a moist or wetted form. One form of suitable water treatment apparatus is an EDI apparatus comprising a plurality of chambers to form a stack, for the purification of the water. The present invention provides an easier method of filling of chambers compared with the use of wetted or moist resins, and 'over filling' of the cells of water treatment apparatus, in order to achieve results desired, and a greater flexibility of performance parameters.
摘要:
Disclosed is a pre-treated ion exchange resin comprising at least 15% by total number of exchangeable groups comprising at least one of an ion, or a Lewis acid, or a Lewis base resulting from a heat transfer fluid component having a pK a or pK b of greater than 5 in an aqueous solution at 25 °C, based on the total number of exchangeable groups. In one embodiment, the heat transfer fluid component is at least one of a colorant, a corrosion inhibitor, an antifoaming agent, a bitterant, a dispersant, or a combination thereof. In one embodiment, the heat transfer fluid component comprises a heat transfer fluid corrosion inhibitor. Also disclosed are heat transfer systems, assemblies, fuel cell systems and methods of maintaining a conductivity of less than 200 µS/cm in a heat transfer fluid that employ the disclosed pre-treated ion exchange resins.
摘要:
A method and device for controlling fluid flow through a sample processing device, comprising: providing a sample processing device comprising a substrate (180) that comprises first and second major sides and a first cover (184) attached to the first major side of the substrate, the sample processing device further comprising a process array formed therein, the process array comprising a first chamber (150a) defining a first chamber volume, a second chamber, a channel (160b) extending between the first chamber and the second chamber, and a valve tip (172a) protruding into the first chamber volume of the first chamber, wherein the valve lip separates the first chamber from the channel, wherein the valve lip is located between a portion of the first chamber volume and the first cover, and wherein the portion of the first chamber volume is located between the valve hp and the second major side of the substrate; forming an opening in the valve tip, wherein the first chamber is in fluid communication with the channel after forming the opening; and rotating the sample processing device about an axis of rotation after forming the opening to move sample material from the first chamber into the channel through the opening.
摘要:
Methods and devices for removing small negatively charged molecules from a biological sample mixture that uses an anion exchange material that has associated therewith a polyoxyalkylene.
摘要:
Die vorliegende Anmeldung betrifft ein Verfahren zur Adsorption von Radionukliden aus Medien, bevorzugt Wässern oder wässrigen Lösungen wie sie beispielsweise in Kernanlagen, bevorzugt Kernkranwerken anfallen, durch Kontaktieren des zu behandelnden Mediums, bevorzugt Wasser oder wässrige Lösungen, mit einem Mischbett, das zusätzlich mit wenigstens einer Deckschicht eines monodispersen, makroporösen Ionenaustauschers mit einem mittleren Perldurchmesser kleiner als der im Mischbett eingesetzten Ionenaustauscher versehen ist.
摘要:
The present invention is directed to a method of preparing compositions enriched in compounds containing carbon chains of varying degrees of unsaturation using argentation chromatography. The present method utilizes an argentized cationic resin or a conditioned argentized alumina to separate compounds containing saturated or mono-unsaturated carbon chains from compounds having polyunsaturated carbon chains present in a starting composition. The invention is particularly useful for preparing a composition enriched in polyunsaturated fatty acid alkyl esters from mixtures of fatty acid esters in a starting composition derived from vegetable oils. The present invention is also directed to a method of preparing a conditioned argentized alumina adsorbent having increased selectivity for compounds containing one or more polyunsaturated carbon chains.