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Resin-based nano composite adsorbent used for extracting cesium from brine and preparation method of adsorbent

A nano-composite, resin-based technology, used in chemical instruments and methods, adsorbed water/sewage treatment, seawater treatment, etc., can solve the problems of limited practical application, large volume shrinkage, and difficult to analyze, and achieve fast adsorption speed and adsorption capacity. Large, long-life effect

Inactive Publication Date: 2019-07-05
JIANGSU HELPER FUNCTIONAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adsorbent has the characteristics of large adsorption capacity, but it is not easy to analyze, so it is not suitable for extracting cesium from salt lake brine.
[0008] CN103736472B discloses a gel-type cesium ion adsorbent, which is rubidium silicotungstate-calcium alginate gel-type microspheres, which have high adsorption capacity and good selectivity for cesium ions, but the gel microspheres usually shrink in volume when dry Large and easily broken, limiting its practical application

Method used

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  • Resin-based nano composite adsorbent used for extracting cesium from brine and preparation method of adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) In a 2000ml flask with a stirring and programmed temperature control heating device, add water and a dispersant, and fully stir until dissolved to form an aqueous phase; wherein, 500g of water; the dispersant is polyvinyl alcohol, and the amount added is 2.5g;

[0036] (2) The oil phase is composed of monomers, crosslinking agents and porogens. Specifically, the monomer is styrene, and the addition amount is 200 g; the crosslinking agent is divinylbenzene, and the addition amount is 200 g; the porogen is xylene, and the addition amount is 200 g; the oil phase is 600 g in total.

[0037] (3) Add initiator to the oil phase formed in step (2), stir well until dissolved. The initiators are benzoyl peroxide and azobisisobutyronitrile, and the addition amounts are 1.5g and 0.5g respectively.

[0038] (4) In the oil phase formed in step (3), adding inorganic nano-silicon material powder with a particle size of less than 1 μm. The addition amount of inorganic nano-silicon p...

Embodiment 2

[0043] The preparation process is the same as in Example 1, except that Co(NO 3 ) 2 ·6H 2 O add-on is 50g, and K in step (7) 4 Fe(CN) 6 ·3H 2 O addition is 76g. This adsorbent is numbered B.

Embodiment 3

[0045] The preparation process is the same as in Example 1, except that Co(NO 3 ) 2 ·6H 2 O add-on is 83.3g, and K in step (7) 4 Fe(CN) 6 ·3H 2 O addition is 126.7g. This adsorbent number is C.

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Abstract

The invention discloses a resin-based nano composite adsorbent used for extracting cesium from brine and a preparation method of the adsorbent. The method comprises the following steps: synthesizing inorganic nano silicon material doped porous resin by adopting an in-situ polymerization method, and supporting potassium cobalt ferrocyanide on the inorganic nano silicon material doped porous resin by a vacuum impregnation method to prepare the resin-based nano composite adsorbent. The adsorbent provided by the invention utilizes a high specific surface area of the inorganic nano silicon materialto improve a loading amount of the porous resin to the potassium cobalt ferrocyanide, so that the adsorption capacity of the adsorbent is improved; and in addition, cross-linking twining of a polymerchain in resin nano pores is utilized to effectively inhibit loss of the active component nano potassium cobalt cyanide particles, so that the service life of the adsorbent is ensured; therefore, theresin-based nano composite adsorbent used for extracting the cesium from the brine has the following advantages: the adsorbent has a fast adsorption speed of the cesium, large adsorption capacity, high selectivity, stable performance and long service life.

Description

technical field [0001] The invention relates to the technical field of adsorbents, in particular to a nanocomposite adsorbent for extracting cesium from brine and a preparation method thereof. Background technique [0002] Cesium is known as "the metal with long eyes". Cesium and its compounds have good ductility, excellent electrical and thermal conductivity, and excellent photoelectric effect performance, so they are widely used in communications, military, aerospace, energy, etc. Conversion, electronic devices, biology, medicine and chemical engineering, etc., can be used in infrared radiation light sources, atomic clocks, magnetic fluid generators, thermionic power generation, ion engines, hollow cathode lamps, photomultiplier tubes, camera tubes, micro batteries, flashing Counters, lasers, special glass, DNA separation, sedatives, catalysts, etc. In recent years, with the development of science and technology, the demand for cesium and its compounds is increasing day b...

Claims

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Application Information

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IPC IPC(8): B01J20/26C02F1/28C22B26/10B01J20/30C02F103/08
CPCB01J20/04B01J20/103B01J20/26C02F1/288C02F2103/08C22B26/10
Inventor 蔡建国石洪雁
Owner JIANGSU HELPER FUNCTIONAL MATERIALS
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