Receptor and method for removing oxoanions from aqueous phase

    公开(公告)号:US12077455B2

    公开(公告)日:2024-09-03

    申请号:US17436780

    申请日:2020-03-06

    摘要: A receptor for the simultaneous removal of oxoanions and their counterions from aqueous phase, particularly containing radioactive wastes, containing amide groups specifically coordinating the oxoanions, as well as moieties specifically coordinating cations, according to the present invention is characterised in that it contains within one molecule domains binding oxoanions and domains binding cations, preferably adapting a molecular structure of a general formula: (I) wherein Z this is a group containing crown ether, preferably a benzocrown group, X is any substituent, including the Y—Z grouping, and Y is any substituent or 0 (i.e. a direct bond between N and Z), where the oxoanion binding domain is a squaramide unit coordinating the oxoanions through amide groups, and squaramide contains additional substituents that increase or decrease the acidity of its amide protons, compared to unsubstituted squaramide, whereas the counter ion binding domain is a crown ether of a size adjusted to the type of binding cation, which forms part of at least one of the aforementioned substituents of squaramide, where the receptor has the ability to remove oxoanions and their counterions from aqueous phase to another water-immiscible phase, preferably to organic phase, and has the ability to form soluble complexes in at least one of the aforementioned phases. The invention considers also a method of removing oxoanions in the form of inorganic salts from aqueous phase, using receptors of the invention in the form of organic molecules containing amide groups, according to the invention is characterised in that it uses the aforementioned receptors for simultaneous binding of oxoanions and their counterions in aqueous phase, preferably acidic when using the receptor with substituents increasing acidity of squaramide protons, or alkaline when using the receptor with substituents decreasing acidity of squaramide protons. A sensor for detecting oxoanions according to the invention is characterised in that it uses the aforementioned receptors, dissolved or suspended in an organic solvent or in a mixture of organic solvents, forming coloured complexes in contact with the phase containing given oxoanions. The preparation for removing oxoanions from aqueous solutions, particularly containing radioactive waste at the stage preceding their disposal by vitrification, is characterised in that it contains the receptor according to the invention, dissolved or suspended in the water-immiscible phase, and the appropriate amount of counterion facilitating extraction. A process of utilisation of aqueous solutions by vitrification, particularly solutions containing radioactive waste, is characterised in that vitrification step is preceded by the step of oxoanions removal, preferably sulfate(VI) anions, by the method according to the invention, using the receptors according to the invention, preferably using the preparation according to the invention.

    METHOD FOR PROCESSING RADIOACTIVE LIQUID WASTE
    5.
    发明申请
    METHOD FOR PROCESSING RADIOACTIVE LIQUID WASTE 审中-公开
    用于处理放射性液体废物的方法

    公开(公告)号:US20160276049A1

    公开(公告)日:2016-09-22

    申请号:US15059709

    申请日:2016-03-03

    摘要: A method for processing a radioactive liquid waste containing boron of the present invention includes: a molar ratio control step of adding an alkali metal or an alkali metal compound to a radioactive liquid waste containing boron to control an alkali metal/boron molar ratio in the radioactive liquid waste to be 0.8 or more; a drying step of drying the radioactive liquid waste having the controlled molar-ratio using a dryer to form a powdered waste; a dissolving step of mixing the powdered waste with kneading water to prepare a solution; and a kneading step of adding a hydraulic inorganic solidifying material to the solution, and kneading the hydraulic inorganic solidifying material and the solution for solidification.

    摘要翻译: 本发明的含有硼的放射性废液处理方法包括:将摩尔比控制步骤,将碱金属或碱金属化合物加入到含硼的放射性废液中以控制放射性的碱金属/硼的摩尔比 液体废物为0.8以上; 干燥步骤,使用干燥器干燥具有受控摩尔比的放射性废液,以形成废粉; 将粉碎废料与捏合水混合以制备溶液的溶解步骤; 以及向该溶液中添加水硬性无机固化材料并捏合该水硬性无机固化材料和固化溶液的捏合步骤。

    Solidification method of radioactive waste
    6.
    发明授权
    Solidification method of radioactive waste 有权
    放射性废物固化方法

    公开(公告)号:US09437338B2

    公开(公告)日:2016-09-06

    申请号:US14323670

    申请日:2014-07-03

    IPC分类号: G21F9/16 G21F9/30 G21F9/12

    摘要: A solidification method of radioactive waste is provided, including kneading a binder and an inorganic adsorbent to obtain a kneaded object, the in organic adsorbent included radionuclides; extruding the kneaded object to obtain an extruded material object; cutting the extruded material object to obtain at least one extruded material block; and firing the at least one extruded material block to solidify the at least one extruded material block.

    摘要翻译: 提供放射性废物的固化方法,包括捏合粘合剂和无机吸附剂以获得捏合物,有机吸附剂包括放射性核素; 挤出捏合物以获得挤出物料; 切割挤压材料物体以获得至少一个挤压材料块; 以及烧制所述至少一个挤压材料块,以固化所述至少一个挤压材料块。

    Vitrified chemically bonded phosphate ceramics for immobilization of radioisotopes
    7.
    发明授权
    Vitrified chemically bonded phosphate ceramics for immobilization of radioisotopes 有权
    用于固定放射性同位素的玻璃化化学键合磷酸盐陶瓷

    公开(公告)号:US09305672B2

    公开(公告)日:2016-04-05

    申请号:US14291980

    申请日:2014-05-30

    发明人: Arun S. Wagh

    摘要: A method of immobilizing a radioisotope and vitrified chemically bonded phosphate ceramic (CBPC) articles formed by the method are described. The method comprises combining a radioisotope-containing material, MgO, a source of phosphate, and optionally, a reducing agent, in water at a temperature of less than 100° C. to form a slurry; curing the slurry to form a solid intermediate CBPC article comprising the radioisotope therefrom; comminuting the intermediate CBPC article, mixing the comminuted material with glass frits, and heating the mixture at a temperature in the range of about 900 to about 1500° C. to form a vitrified CBPC article comprising the radioisotope immobilized therein.

    摘要翻译: 描述了通过该方法形成的放射性同位素和玻璃化化学键合磷酸盐陶瓷(CBPC)制品的固定方法。 该方法包括在低于100℃的温度下将含放射性同位物的材料,MgO,磷酸盐源和任选的还原剂混合在水中以形成浆料; 固化浆料以形成包含其中的放射性同位素的固体中间体CBPC制品; 粉碎中间体CBPC制品,将粉碎的材料与玻璃料混合,并在约900至约1500℃的温度范围内加热混合物以形成包含固定在其中的放射性同位素的玻璃化CBPC制品。

    VITRIFIED CHEMICALLY BONDED PHOSPHATE CERAMICS FOR IMMOBILIZATION OF RADIOISOTOPES
    8.
    发明申请
    VITRIFIED CHEMICALLY BONDED PHOSPHATE CERAMICS FOR IMMOBILIZATION OF RADIOISOTOPES 有权
    用于固定放射性物质的化学化学粘结磷酸盐陶瓷

    公开(公告)号:US20150348661A1

    公开(公告)日:2015-12-03

    申请号:US14291980

    申请日:2014-05-30

    发明人: Arun S. WAGH

    摘要: A method of immobilizing a radioisotope and vitrified chemically bonded phosphate ceramic (CBPC) articles formed by the method are described. The method comprises combining a radioisotope-containing material, MgO, a source of phosphate, and optionally, a reducing agent, in water at a temperature of less than 100° C. to form a slurry; curing the slurry to form a solid intermediate CBPC article comprising the radioisotope therefrom; comminuting the intermediate CBPC article, mixing the comminuted material with glass frits, and heating the mixture at a temperature in the range of about 900 to about 1500° C. to form a vitrified CBPC article comprising the radioisotope immobilized therein.

    摘要翻译: 描述了通过该方法形成的放射性同位素和玻璃化化学键合磷酸盐陶瓷(CBPC)制品的固定方法。 该方法包括在低于100℃的温度下将含放射性同位物的材料,MgO,磷酸盐源和任选的还原剂混合在水中以形成浆料; 固化浆料以形成包含其中的放射性同位素的固体中间体CBPC制品; 粉碎中间体CBPC制品,将粉碎的材料与玻璃料混合,并在约900至约1500℃的温度范围内加热混合物以形成包含固定在其中的放射性同位素的玻璃化CBPC制品。