Method for preparing natural ore soil loaded nanometer arsenic removal agent

A natural ore and nanotechnology, applied in chemical instruments and methods, water/sludge/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of secondary pollution of water bodies, agglomeration and inactivation of nanomaterials, etc., and achieve equipment Less investment, simple operation, and the effect of avoiding secondary pollution

Inactive Publication Date: 2014-02-26
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a preparation method of a natural ore-loaded nano-arsenic removal agent, which solves the problems of nano-material agglomeration inactivation and secondary pollution of water bodies, and improves the adsorption of arsenic capacity

Method used

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  • Method for preparing natural ore soil loaded nanometer arsenic removal agent
  • Method for preparing natural ore soil loaded nanometer arsenic removal agent
  • Method for preparing natural ore soil loaded nanometer arsenic removal agent

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Add 1088.4 grams of attapulgite to 4.5 liters of 1mol / L ferric nitrate aqueous solution (the mass of the metal salt is 1088.4g), and stir vigorously for 60 minutes to make the metal salt ions evenly and fully enter the pores of the natural mineral soil;

[0039] (2) According to the volume ratio of 1:1, add 3mol / L sodium hydroxide aqueous solution to the mixed solution in (1) until the pH value of the reaction solution is 7, and stir for 120 minutes to make it fully react;

[0040] (3) The reaction solution in (2) was allowed to stand for 360 minutes and then filtered through a membrane with a pore size of 1 micron to obtain the product;

[0041] (4) Wash the separated product in (3) with water, then dry and pulverize to obtain a powder with a particle size of less than 0.1mm;

[0042] (5) Use a granulator to granulate the powder in (4) into round pellets with a diameter of 1.0mm, dry at 110°C for 60 minutes, then sinter at 300°C for 4 hours, and finally cool natur...

Embodiment 2

[0051] (1) Add 559.8 grams of attapulgite to 3.5 liters of 0.4mol / L ferric sulfate aqueous solution (the mass of the metal salt is 559.8 g), and stir vigorously for 50 minutes to make the metal salt ions evenly and fully enter the pores of the natural mineral soil ;

[0052] (2) Add 4mol / L sodium hydroxide aqueous solution to the mixed solution in (1) at a volume ratio of 5:3 until the pH value of the reaction solution is 7.5, and stir for 150 minutes to make it fully react;

[0053] (3) The reaction solution in (2) was allowed to stand for 360 minutes and then filtered through a membrane with a pore size of 1 micron to obtain the product;

[0054] (4) Wash the separated product in (3) with water, then dry and pulverize to obtain a powder with a particle size of less than 0.1 mm;

[0055] (5) Use a granulator to granulate the powder in (4) into round pellets with a diameter of 1.1mm, dry at 130°C for 50 minutes, then sinter at 350°C for 3.5 hours, and finally cool naturally t...

Embodiment 3

[0058] (1) Add 405.5 grams of attapulgite to 5 liters of 1mol / L ferric chloride aqueous solution (the mass of the metal salt is 811.01g), and stir vigorously for 90 minutes to make the metal salt ions evenly and fully enter the pores of the natural mineral soil (2) Add 3mol / L sodium hydroxide aqueous solution to the mixed solution in (1) at a volume ratio of 1:1 until the pH value of the reaction solution is 7, and stir for 100 minutes to make it fully react;

[0059] (3) The reaction solution in (2) was allowed to stand for 360 minutes and then filtered through a membrane with a pore size of 1 micron to obtain the product;

[0060] (4) Wash the separated product in (3) with water, then dry and pulverize to obtain a powder with a particle size of less than 0.1 mm;

[0061] (5) Use a granulator to granulate the powder in (4) into round pellets with a diameter of 0.8mm, dry at 120°C for 70 minutes, then sinter at 375°C for 4.5 hours, and finally cool naturally to The natural or...

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Abstract

The invention discloses a method for preparing a natural ore soil loaded nanometer arsenic removal agent. The method comprises the following steps: adding a metal salt solution into natural ore soil, adding an alkali solution into the natural ore soil, and stirring so as to carry out a full reaction; filtering and separating the obtained products, cleaning, drying, grinding and pelleting to prepare round balls with the diameter of 0.5-1.5mm, and finally, drying, sintering, and naturally cooling to room temperature, thus obtaining the natural ore soil loaded nanometer arsenic removal agent. The arsenic removal agent has large specific surface, more active sites can be provided, high arsenic adsorption capacity is realized, aggregation of nanometer materials is avoided, secondary pollution to the water body is avoided, and the method can be widely applied to aspects such as high-arsenic surface water purification treatment and arsenic-containing sewage treatment.

Description

technical field [0001] The invention relates to an arsenic-removing agent, in particular to a preparation method of a natural ore-loaded nano-arsenic-removing agent. Background technique [0002] Arsenic compounds are easy to accumulate in the human body, causing acute or chronic poisoning. Long-term drinking of drinking water with excessive arsenic will block the body's metabolic pathways, endanger human health, and cause a special endemic disease - "earth arsenic disease". Arsenic compounds still cause human diseases. One of the main threats of lung cancer, skin cancer and other cancers of internal organs. At present, endemic arsenic poisoning in drinking water in my country is mainly distributed in Shanxi, Inner Mongolia, Xinjiang, Ningxia, Jilin, Sichuan, Anhui, Qinghai, Heilongjiang, Henan, Shandong and other provinces. Therefore, the effective removal of arsenic in water is an important issue related to the environment and human health. [0003] At present, there are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F1/62
Inventor 孙柏孙令涛贾勇遇鑫遥金震罗涛刘锦淮
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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