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Nano granule water purifying material for removing heavy metal and preparation thereof

A nanoparticle and heavy metal technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve problems such as low efficiency, high cost, and difficult operation

Inactive Publication Date: 2008-10-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have shortcomings such as low efficiency, high cost, and difficult operation.
In conventional sewage treatment, due to the large specific surface area and high charge density of iron and aluminum oxides and hydroxides, they have a strong adsorption effect on metal ions in water, but it is difficult to separate these oxides from water, resulting in The adsorption characteristics of these substances cannot be fully utilized in the water treatment operation, and some natural minerals such as quartz sand and zeolite have the characteristics of low price, wide range of materials, various varieties, easy operation, and large selectivity, and have been gradually used in recent years. advanced water treatment

Method used

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  • Nano granule water purifying material for removing heavy metal and preparation thereof
  • Nano granule water purifying material for removing heavy metal and preparation thereof
  • Nano granule water purifying material for removing heavy metal and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Take 50g of pretreated quartz sand and sieve it into 16-20 mesh, put it into 200mL secondary deionized water and mix evenly, add 0.5g / L boric acid 10mL, mix evenly for 30min, then add 2.0g Aluminum powder (the average particle size is 75nm, obtained by the electric explosive wire method under the protection of argon), placed in an ultrasonic bath at 80 ° C for 30 min, and then added 2 g / L tetrahexyl orthosilicate to the mixture 10 mL of ethanol solution (the volume ratio of ethanol to tetrahexyl orthosilicate is 5.5:1), continue ultrasonic oscillation for 30 min, and then keep the conditions unchanged for 5 hours, filter the solid-liquid mixture prepared above with a Buchner funnel, and The filter material was dried in a drying oven at a temperature of 70° C. for 10 hours to obtain 50.79 g of the nanoparticle water purification material of the present invention.

[0118] The water purification granular material prepared in this example, by mass, the coating accounts for...

Embodiment 2

[0120] Sieve 50g of pretreated quartz sand into 20-40 mesh, put it into 200mL deionized water and mix evenly, then add 10mL of 0.5g / L sodium salicylate, mix evenly for 30min, then add 2.0g Aluminum powder (the average particle size is 75nm, obtained by the electric explosive wire method under the protection of argon), placed in an ultrasonic tank and ultrasonically oscillated for 30min, and then 10mL of a 2g / L ethanol solution of tetrahexyl orthosilicate was added to the mixture (The volume ratio of ethanol to tetrahexyl orthosilicate is 5.5:1), continue ultrasonic oscillation for 30 minutes, and then keep the conditions unchanged for 5 hours. Filter the solid-liquid mixture prepared above, and dry the filter material in a drying oven at a temperature of 60° C. for 10 hours to obtain 50.79 g of the nanoparticle water purification material of the present invention.

[0121] The water purification granular material prepared in this example, by mass, the coating accounts for 1.56...

Embodiment 3

[0123] Put 50g of pretreated quartz sand of 40-60 mesh into 200mL of deionized water and mix evenly, then add 0.5g / L sodium salicylate 10mL, after mixing evenly for 30min, add 4.0g of aluminum powder ( The average particle size is 75nm, which is obtained under the protection of argon by the electric explosive wire method), placed in an ultrasonic tank for ultrasonic oscillation for 30min, and then 10mL of an ethanol solution of 2g / L tetrahexyl orthosilicate is added to the mixture (ethanol and The volume ratio of tetrahexyl orthosilicate is 2.0:1), continue ultrasonic oscillation for 30 minutes, and then keep the conditions unchanged for 5 hours. Filter the solid-liquid mixture prepared above, and dry the filter material in a drying oven at a temperature of 60° C. for 10 hours to obtain 51.00 g of the nanoparticle water purification material of the present invention.

[0124] The water purification granular material prepared in this example, by mass, the coating accounts for 1...

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Abstract

The invention relates to a series of nano-particle water purification materials, which take quartz sand or zeolite particle as a substrate, nano-meter aluminum (iron) oxide or nano-meter aluminum (iron) oxidized hydrogen oxide as a modified filtration coating, and can effectively and completely remove a plurality of heavy metals from wastewater. The invention also relates to a preparation method of the nano-particle water purification materials. In the preparation method, acidic solution with 16 to 80 meshes of quartz sand or 20 to100 meshes of clinoptilolite is poured into secondary deionized water, uniformly mixed and heated, nano-aluminum powder, aluminum nitride powder or iron powder is poured into the acidic solution and ultrasonically mixed and ethanol solution of ester is then poured into the mixed acidic solution, ultrasonically mixed again, filtrated and dried so as to gain nano-fibriform AlO(OH) or FeOOH which is the particle water purification materials of filtration coating which are further roasted so as to gain Gamma-Al2O3 or Fe2O3 which is the particle water purification materials of filtration coating. The nano-particle water purification materials of the invention have the advantages of strong removal ability, high cleanliness, great saturated adsorption capacity, etc.

Description

technical field [0001] The invention belongs to the field of waste water purification, and in particular relates to a modified filter coating which uses quartz sand or zeolite particles as a matrix, nano-aluminum (iron) oxides or nano-aluminum (iron) oxyhydroxides as a modified filter coating, which can purify waste water A nano particle water purification material for completely and effectively removing various heavy metal elements and a preparation method of the material. technical background [0002] With the rapid development of global economic integration and the continuous improvement of people's living standards, the problem of environmental pollution has become increasingly prominent. According to the survey data of the World Health Organization, poor water quality accounts for 80% of the causes of global human diseases. Statistics from 78 cities in the United States show that water quality problems account for about 95% of the causes of infectious diseases. It can...

Claims

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Application Information

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IPC IPC(8): B01D39/06
Inventor 韩炜刘光辉徐跃王陪陪刘琼
Owner JILIN UNIV
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