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Composite adsorption material for removing strontium ions from natural water and preparation method for adsorption material

A composite adsorption material and adsorption material technology, which is applied in the field of waste water treatment in environmental protection, can solve the problems of low adsorption efficiency and complex process of strontium ion removal method, and achieve the effect of increasing adsorption capacity, low cost and large adsorption capacity

Inactive Publication Date: 2013-01-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of low adsorption efficiency of the current adsorption materials, the present invention provides a 4A zeolite / polyantimonic acid composite adsorption material, which can efficiently remove strontium ions in water
[0007] Another object of the present invention is to solve the complex problem of the existing method for removing strontium ions in drinking water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The kaolinite ore was crushed and ground to 160 mesh, calcined at 750°C for 1 hour, then cooled, and the calcined kaolinite powder was dissolved in NaOH with a dry mass fraction of 20% to make a gel, stirred at 50°C for 20 minutes, and then kept at constant temperature After a few hours, heat the gel to 80°C, add a crystallization directing agent and stir for 15 minutes, then crystallize at a constant temperature for 2 hours, separate the crystallized slurry from solid to liquid, and wash the filter residue several times with soft water until the pH is about 8 , the filtered product was dried at a constant temperature of 105°C, and finally cooled and ground to obtain a finished powder; 2 o 3 As a synthetic raw material, hydrated Sb was oxidized and refluxed for a certain period of time in hydrogen peroxide and 30°C 2 o 3 Colloid, after drying, select 40 mesh particles and use 1.0mol / L HNO 3 After soaking for 20 hours, wash until neutral, and dry; then add 5g of 4A ze...

Embodiment 2

[0024] The kaolinite ore was crushed and ground to 160 mesh and calcined at 750°C for 1.5h, then cooled, the calcined kaolinite powder was dissolved in NaOH with a mass fraction of 20% to make a gel and stirred at 50°C for 25min Keep the temperature constant for several hours, raise the temperature of the gel to 85°C, add the crystallization directing agent and stir for 24min, then crystallize at constant temperature for 2.5h, separate the solid-liquid of the crystallized slurry, and wash the filter residue several times with soft water until the pH is 8 or so, the filtered product was dried at a constant temperature of 105°C, and finally cooled and ground to obtain a finished powder; 2 o 3 As a synthetic raw material, hydrated Sb was oxidized and refluxed for a certain period of time in hydrogen peroxide and 30°C 2 o 3 Colloid, after drying, select 70 mesh particles and use 1.0mol / L HNO 3 After soaking for 22 hours, wash until neutral and dry; then add 5g of 4A zeolite pow...

Embodiment 3

[0027]Crush and grind the kaolinite ore to 160 mesh, calcinate at 750°C for 2h, then cool, dissolve the calcined kaolinite powder in NaOH with a mass fraction of 20% to make a gel, stir at 50°C for 30min, and then keep the temperature After a few hours, heat the gel to 90°C, add a crystallization directing agent and stir for 30 minutes, then crystallize at a constant temperature for 3 hours, separate the crystallized slurry from solid to liquid, and wash the filter residue several times with soft water until the pH is about 8 , the filtered product was dried at a constant temperature of 105°C, and finally cooled and ground to obtain a finished powder; 2 o 3 As a synthetic raw material, hydrated Sb was oxidized and refluxed for a certain period of time in hydrogen peroxide and 30°C 2 o 3 Colloid, after drying, select 100 mesh particles and use 1.0mol / L HNO 3 After soaking for 24 hours, wash until neutral, and dry; then add 5g of 4A zeolite powder and 15g of polyantimonic aci...

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PUM

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Abstract

The invention discloses a composite adsorption material for removing strontium ions from natural water and a preparation method for the adsorption material, and belongs to the field of material preparation. The preparation method comprises the following steps of: crushing and grinding kaolinite, putting powder into NaOH to prepare gel, crystallizing, washing buy using soft water, and drying to prepare 4A zeolite; performing oxidation reflux on Sb2O3 to prepare colloidal polyantimonic acid, drying, soaking in nitric acid, washing until the solution is neutral, and drying; and putting the prepared 4A zeolite and polyantimonic acid into a triethylamine solution, mixing, uniformly stirring, putting into a stainless steel reaction kettle with a polyethylene tetraether lining, crystallizing, performing filtering separation, washing until the solution is neutral, and drying to obtain the adsorption material which has a good adsorption effect and can selectively adsorb the strontium ions. The preparation method is innovative, novel and unique, and the prepared material has the good adsorption effect on the strontium ions in the water.

Description

technical field [0001] The invention relates to a composite adsorption material for removing strontium ions in natural water bodies and a preparation method thereof, in particular to advanced treatment of water bodies containing strontium ions, and belongs to the field of waste water treatment in environmental protection. Background technique [0002] Strontium, a white alkaline earth metal, is malleable and plastic. Easily oxidized to yellow in air. Under normal temperature, it can react violently with water to produce hydrogen gas. When mixed with halocarbons such as carbon tetrachloride, trichloroethylene, bromine and iodine compounds, it may cause an explosion due to friction and impact. Many salts formed by its nitrates, chlorides and organic acids are insoluble in water, and strontium and its compounds are of low toxicity. Radioactive strontium is highly toxic. After Sr enters the bone tissue, it mainly accumulates in the inorganic matter of the long bone near the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/42C02F1/62
Inventor 涂保华雷春生梅宇韬
Owner CHANGZHOU UNIV
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