12results about "Ion-exchange column/bed processes" patented technology

The disclosure belongs to the field of preparation of radioisotopes for medical uses and relates to a method for extracting lead-212 and bismuth-212 from a thorium-232 decay chain, including: passing a solution containing thorium-232 decay chain substance through an anion exchange resin column, the solution containing thorium-232 decay chain substance containing halogen ions, and a concentration of hydrogen ions in the solution containing thorium-232 decay chain substance being more than 0.01 mol / L, lead -212 and bismuth -212 being adsorbed by the anion exchange resin column and other nuclides passing through the anion exchange resin column without being adsorbed; and introducing eluting agents to desorb lead-212 and bismuth-212 from the anion exchange resin column, so as to obtain lead-212 and bismuth-212 by separation and extraction. The disclosure can simultaneously extract lead-212 and bismuth-212 with a high extraction speed and high purity, and is not easy to cause organic pollution of products.

The utility model discloses a mixed bed ion exchanger with prevent effect of blocking, including jar body, drain outlet and water inlet respectively located jar body top portion's bottom, the inside setting resin layer of jar body, the top of resin layer is equipped with the anti -block component for back flush discharge time and the microwave generator below resin layer, the anti -block component includes main pipeline, and the branch pipeline of detachable connection with main pipeline bottom, the bottom of branch pipeline is equipped with filter screen. Prevent the further entry of impurity and cause the phenomenon of jam in the inside of main pipeline, improve the sewage capacity, avoid resin agglomerate and be wrapped simultaneously, improve the regeneration effect and exchange capacity of resin, strengthen the effect of backwashing and regeneration, reduce the operation cost and maintenance workload.

To provide a method which enables effective separation and removal of cyanuric acid from wastewater containing cyanuric acid, causing the wastewater to be reusable treated water.SOLUTION: A treatment method of wastewater containing cyanuric acid and a chloride ion includes a step of bringing the wastewater into contact with an OH-type II-type strongly basic ion-exchange resin, preferably adjusting a pH of the wastewater to be treated to 7 or more before bringing the wastewater into contact with the II-type strongly basic ion-exchange resin, to thereby cause the cyanuric acid contained in the wastewater to be adsorbed on the II-type strongly basic ion-exchange resin.SELECTED DRAWING: None

To provide methods of reducing bioburden of a chromatography resin.SOLUTION: Provided herein are methods of reducing bioburden of a chromatography resin that include exposing a container including a composition including (i) a chromatography resin and (ii) a liquid including at least one alcohol to a dose of gamma-irradiation sufficient to reduce the bioburden of the container and the chromatography resin, where the at least one alcohol is present in an amount sufficient to ameliorate the loss of binding capacity of the chromatography resin after / upon exposure to the dose of gamma-irradiation. Also provided are reduced bioburden chromatography columns including the reduced bioburden chromatography resin, compositions including a chromatography resin and a liquid including at least one alcohol, and methods of performing reduced bioburden column chromatography using one of these reduced bioburden chromatography columns.SELECTED DRAWING: Figure 1

The present invention employs continuous ion exchange processes in binary configurations during the refinement of rare earth elements to convert an input stream of mixed rare earth elements into two or more separate streams of isolated rare earth elements. The present invention leverages the different chemical properties and behaviors of heavier and lighter REEs to separate them in continuous ion exchange devices. The present invention applies to any rare earth feed stream in aqueous solution that is relatively pure. Two-phase solid-liquid systems are used herein.

The present invention provides a method and apparatus for purifying organic solvents that can reduce the amount of impurities, such as metal impurities, of as many types as possible from the organic solvent. [Solution] A method for purifying an organic solvent, comprising an anion exchanger contact step of contacting the organic solvent to be purified with anion exchanger A and anion exchanger B, wherein anion exchanger A is an anion exchanger having at least one ionic form selected from the group consisting of OH form, free base form, carbonate form, and bicarbonate form, and anion exchanger B is a chelate resin containing a glucamine-type ion exchange group.

To enable accurate, real-time measurement of water content of non-aqueous solvents.SOLUTION: A method of measuring water content of a non-aqueous solvent is provided, the method comprising preparing a calibration curve representing a relationship between resistivity or conductivity of the non-aqueous solvent and water content in advance, and measuring resistivity or conductivity of the non-aqueous solvent to derive water content of the non-aqueous solvent from the measured resistivity or conductivity using the calibration curve prepared in advance.SELECTED DRAWING: Figure 1

Coolant vessel (1) for a cooling circuit (100) of a fuel cell system, characterized in that it comprises at least: - a tank (2) suitable to be connected to the cooling circuit; - a coolant (3) which is contained in the tank and is suitable to be circulated along the cooling circuit, wherein the coolant (3) comprises at least one component to be deionized; - a deionizing cartridge (4) which is removably connected to and is at least partially inserted inside the tank (2), wherein the deionizing cartridge (4) is configured to deionize said at least one component to thereby maintain conductivity of the coolant (3) below a predetermined threshold.

This utility model relates to an apparatus for preparing light potassium carbonate from urea waste ammonia water; it includes an ammonium bicarbonate preparation unit and a potassium chloride solution preparation unit. The ammonium bicarbonate preparation unit includes a waste ammonia water pipeline from the urea system, which is connected to the inlet of a waste ammonia water tank. The outlet of the waste ammonia water tank is connected to the upper inlet of a carbonation tower via a heat exchanger. A carbon dioxide pipeline is connected to the bottom gas phase inlet of the carbonation tower via a carbon dioxide compressor. The liquid phase outlet at the bottom of the carbonation tower is connected to an ion exchange unit, which is equipped with a potassium bicarbonate solution pipeline connected to the evaporation section. The potassium chloride preparation unit is connected to the ion exchange unit, which is equipped with an ammonium chloride solution pipeline connected to subsequent sections. This apparatus features a reasonable process design, is environmentally friendly, and effectively reduces the production cost of light potassium carbonate while addressing the high investment and operating costs associated with waste ammonia water treatment.

To provide a filter which can efficiently remove metal ions in a processing liquid and can easily obtain a solution having an extremely low metal ion content. A depth filter including a porous molded article. The porous molded article is a sintered material of a mixed powder or a swollen material of the sintered material. The mixed powder contains a dry gel powder and a thermoplastic resin powder. The dry gel powder contains an ion exchange resin having a sulfonic acid group and a nitrogen-containing chelating resin.

Methods and apparatus for pre-treated ion exchange resins, as well as alternative power sources such as heat transfer systems, fuel cells and battery systems, and their use in assemblies including such power sources. The apparatus may comprise a cooling system and a pre-treated ion exchange resin. The pre-treated ion exchange resin may include ion exchange resin treated with corrosion inhibitors and / or antioxidants. The cooling system may comprise a heat transfer fluid. The heat transfer fluid may comprise water, glycol-based freezing point depressants, and mixtures thereof. Examples of glycol-based freezing point depressants include ethylene glycol, propylene glycol, 1,3-propanediol, and mixtures thereof. The cooling system may comprise an ion exchange unit. The ion exchange unit may comprise a pre-treated ion exchange resin, an untreated ion exchange resin, a basic anion resin, an acidic cation exchange resin, and mixtures thereof.

Disclosed in this abstract is an adsorbent cartridge, a first layer made of activated carbon, and a second layer in direct contact with the first layer, the second layer including a second layer made of one or both of zirconium hydroxide and zirconium phosphate, wherein the first layer has a moisture content of X wt%, the second layer has a moisture content of Y wt%, and the difference in moisture content between the first layer and the second layer is 8 wt% or less.