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Modified montmorillonite adsorbent for removing caesium and preparation method thereof

A technology of montmorillonite and adsorbent, which is applied in the field of modified montmorillonite adsorbent and its preparation, and can solve problems such as lack of adsorbent materials

Inactive Publication Date: 2018-03-30
北京源清益壤环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of cheap and efficient adsorption materials for removing cesium in polluted water. Therefore, the development of modified montmorillonite adsorbents for cesium removal is of great significance for the treatment of heavy metal pollution in polluted water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Add 41.37g of montmorillonite to 250mL of nitric acid solution with a concentration of 10% by mass, stir for 50 minutes under the condition of 1000r / min, filter and remove the liquid, wash with 500mL of deionized water and place in a drying oven at 105°C placed in the middle for 35 minutes to obtain substance A01;

[0055] (2) Add substance A01 to 450 mL of NH with a molar concentration of 1.22 mol / L 4 Cl solution, shaking in a shaker at a temperature of 35°C for 1.5 hours to obtain a mixed solution D;

[0056] (3) Add 45 mL of ammonia water with a mass concentration of 21% to the mixed solution D, then add 3.2 g of 2-amino-6-chloro-3-formylchromone, and stir for 4 hours at 1000 r / min to obtain a mixed solution E;

[0057] (4) Centrifuge the mixture E at a speed of 7000 rpm for 5 minutes, remove the supernatant in the upper layer, and dry the solid substance in the lower layer at 60° C. for 24 hours to obtain substance A02;

[0058] (5) 7.6 grams of FeCl 3 ·6H ...

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PUM

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Abstract

The invention discloses a modified montmorillonite adsorbent for removing caesium. The modified montmorillonite adsorbent for removing caesium is prepared through the following steps of washing montmorillonite and then modifying the montmorillonite with a mixed solution prepared through NH4Cl, aqueous ammonia, 2-amino-6-chlorine-3-formylchromone, FeCl3 and FeCl2, so as to prepare a substance A04;modifying the substance A04 with a mixed solution prepared through 1-(6-dichloropyridazine-3-yl)piperazine, 2-chloro-3-fluoro-5-nitropyridine, 6-methyl-5-nitroquinoline and 4,6-dibromo-dibenzothiophene so as to prepare a substance A; modifying the substance A with a mixed solution prepared through PtCl4, BiCl3, Zn(NO3)2, Co(NO3)2 so as to prepared a substance B; modifying the substance B with a mixed solution prepared through tetramethyl-4-piperidinol, 2-vinylthiophene and 3-nitroaniline so as to prepare a substance C; and modifying the substance C with a mixed solution prepared through 3-methoxylpyradiazine, 2-(6-bromohexyloxyl)tetrahydrodropyrane and 3-bromomethyl-6-chlorpyridazine so as to obtain the modified montmorillonite adsorbent for removing caesium.

Description

technical field [0001] The invention belongs to the technical field of heavy metal pollution treatment in polluted water, and in particular relates to a modified montmorillonite adsorbent for removing cesium and a preparation method thereof. Background technique [0002] Due to the characteristics of high toxicity, refractory, and persistence of heavy metals, heavy metal pollution in water bodies has become a serious and common environmental problem, which has attracted extensive attention from domestic and foreign scholars. Heavy metals can interact with proteins in the human body to inactivate them, and they can also accumulate in certain organs of the human body. If they exceed the limit that the human body can bear, they will affect the lungs, kidneys, liver and other important organs through blood circulation. , can cause poisoning and other diseases, and is extremely harmful to the human body. Therefore, it is of great social, economic and environmental significance t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/20
CPCB01J20/12B01J20/0225B01J20/0229B01J20/0244B01J20/0259B01J20/0288B01J20/0296B01J20/22B01J2220/46B01J2220/4806B01J2220/4812C02F1/281C02F1/285C02F2101/20
Inventor 不公告发明人
Owner 北京源清益壤环保科技有限公司