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Filter material for adsorption of heavy metal, and preparation method and application thereof

A technology for adsorbing heavy metals and filter materials, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes. It can solve problems such as poor adsorption of heavy metals, inability to remove arsenic and heavy metals, and inability to meet arsenic filtration requirements. Achieve the effect of high adsorption and fixation function, low cost and mild reaction conditions

Inactive Publication Date: 2017-04-05
ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the removal rate of trivalent arsenic by modern technology such as reverse osmosis membrane (RO) is only about 50%, it cannot meet the filtration requirements for arsenic
In addition, the filter material must take into account the immobilization problem after adsorption for the filtration of arsenic and extremely toxic heavy metals
Traditional porous ceramics and ceramic filter elements use the natural porous structure of diatomite to remove bacteria and macromolecular organic matter, but cannot remove arsenic and heavy metals in the ion state
In the existing technology, raw materials such as montmorillonite and medical stone are mostly used, which have a strong adsorption force for heavy metal ions and harmful toxins. Illite has a huge reserve in my country, but it does not swell in water for a long time. The effect of adsorbing heavy metals is poor, so there is little information about using illite as a raw material for the treatment of heavy metals, etc.

Method used

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  • Filter material for adsorption of heavy metal, and preparation method and application thereof

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Effect test

Embodiment 1

[0016] In the embodiment of the present invention, a filter material for adsorbing heavy metals is composed of the following raw materials in parts by weight: 38 parts of illite, 11 parts of tetrahydrofurfuryl alcohol, 3 parts of barium acetate, and 15 parts of polyethylene resin.

[0017] Mix tetrahydrofurfuryl alcohol with 9.8 times its mass of water to prepare a tetrahydrofurfuryl alcohol solution; mix barium acetate with 3.8 times its mass of deionized water to prepare a barium acetate solution. Mix and grind illite and polyethylene resin, pass through a 100-mesh sieve, then add tetrahydrofurfuryl alcohol solution, heat and stir at 83°C for 65 minutes, then lower the temperature to 70°C, add barium acetate solution dropwise while stirring, and then heat up Ultrasonic treatment at 128° C. for 30 minutes with an ultrasonic power of 600 W, then stirring at 100° C. until dry, and then calcining at 330° C. for 3.8 hours to obtain the filter material.

Embodiment 2

[0019] In the embodiment of the present invention, a filter material for adsorbing heavy metals is composed of the following raw materials in parts by weight: 46 parts of illite, 19 parts of tetrahydrofurfuryl alcohol, 7 parts of barium acetate, and 23 parts of polyethylene resin.

[0020] Mix tetrahydrofurfuryl alcohol with 9.8 times its mass of water to prepare a tetrahydrofurfuryl alcohol solution; mix barium acetate with 3.8 times its mass of deionized water to prepare a barium acetate solution. Mix and grind illite and polyethylene resin, pass through a 100-mesh sieve, then add tetrahydrofurfuryl alcohol solution, heat and stir at 83°C for 70 minutes, then lower the temperature to 70°C, add barium acetate solution dropwise while stirring, and then heat up Ultrasonic treatment at 128° C. for 30 minutes with an ultrasonic power of 600 W, then stirring at 100° C. until dry, and then calcining at 330° C. for 3.8 hours to obtain the filter material.

Embodiment 3

[0022] In the embodiment of the present invention, a filter material for adsorbing heavy metals is composed of the following raw materials in parts by weight: 40 parts of illite, 13 parts of tetrahydrofurfuryl alcohol, 4 parts of barium acetate, and 17 parts of polyethylene resin.

[0023] Mix tetrahydrofurfuryl alcohol with 9.8 times its mass of water to prepare a tetrahydrofurfuryl alcohol solution; mix barium acetate with 3.8 times its mass of deionized water to prepare a barium acetate solution. Mix and grind illite and polyethylene resin, pass through a 100-mesh sieve, then add tetrahydrofurfuryl alcohol solution, heat and stir at 83°C for 68 minutes, then lower the temperature to 70°C, add barium acetate solution dropwise while stirring, and then heat up Ultrasonic treatment at 128° C. for 30 minutes with an ultrasonic power of 600 W, then stirring at 100° C. until dry, and then calcining at 330° C. for 3.8 hours to obtain the filter material.

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Abstract

The invention discloses a filter material for adsorption of heavy metal, and a preparation method and an application thereof. The filter material is composed of, by weight, 38-46 parts of illite, 11-19 parts of tetrahydrofurfuryl alcohol, 3-7 parts of barium acetate, and 15-23 parts of polyethylene resin. The preparation method includes the steps of: mixing and grinding the illite and polyethylene resin, adding a solution of tetrahydrofurfuryl alcohol, and sealedly heating and stirring the mixture; dropwise adding a solution of barium acetate, performing high temperature ultrasonic treatment, and stirring the mixture until dry and performing high temperature calcination to obtain the filter material. The filter material has high adsorption fixing function on arsenic (III) and arsenic (V) and is high in heavy metal ion removal rate. Water filtered through the filter material has a stable weak-alkaline property. The filter material is mainly used for filtration of water and wastewater, and after use, the filter material can be recycled by treating the filter material with acid and re-calcining the filter material. The preparation method has mild reaction conditions and simple operations and is low in cost.

Description

technical field [0001] The invention relates to the technical field of water treatment materials, in particular to a filter material for absorbing heavy metals and a preparation method and application thereof. Background technique [0002] Arsenic is one of the highly toxic elements, and it is also the main inorganic toxin removed in the drinking water standards of various countries. It exists mostly in trivalent and pentavalent states in natural water bodies. However, as a metal element, it does not exist in the state of common cations, but mainly exists in the form of arsenite and arsenate. Even modern technologies such as reverse osmosis membrane (RO) have a removal rate of only about 50% for trivalent arsenic, which cannot meet the filtering requirements for arsenic. In addition, the filter material must take into account the fixation problem after adsorption for the filtration of arsenic and extremely toxic heavy metals. Traditional porous ceramics and ceramic filter...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/70C02F1/62C02F1/58C02F101/20C02F101/22C02F101/10
CPCB01J20/261B01J20/12B01J2220/46B01J2220/4806B01J2220/4812C02F1/28C02F1/281C02F1/285C02F2101/103C02F2101/20C02F2101/206C02F2101/22
Inventor 不公告发明人
Owner ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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