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A preparation method of titanium dioxide composite material for repairing triazophos-contaminated farmland soil

A composite material, titanium dioxide technology, applied in the restoration of polluted soil and other directions, can solve problems such as restricting the healthy development of the flax industry, waste of flax resources, and environmental pollution.

Active Publication Date: 2017-12-15
TAICANG BIQI NEW MATERIAL RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this problem is not solved, it will not only restrict the healthy development of the flax industry, but more importantly, while the flax resources are seriously wasted, it will also bring hidden dangers to the enterprise and pollute the environment where the enterprise is located.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Wash the linen under running water and dry.

[0015] Dissolve ammonium nitrate, ethylenediamine, urea, and magnesium nitrate in deionized water. The concentration of ammonium nitrate is 5g / L, the concentration of ethylenediamine is 5g / L, the concentration of urea is 5g / L, and the concentration of magnesium nitrate is 5g / L. Ammonia solution was obtained.

[0016] Put 50g of washed flax in 500mL of ammoniated solution, place it at 50°C for 10 minutes, rinse and dry to obtain ammoniated flax.

[0017] Sodium dodecylsulfonate and tetrabutylammonium bromide are dissolved in deionized water, the mass concentration of sodium dodecylsulfonate is 5%, and the mass concentration of tetrabutylammonium bromide is 5%, to obtain ten Sodium dialkylsulfonate / tetrabutylammonium bromide mixed aqueous solution.

[0018] Put 100g of titanium dioxide in 500mL of sodium dodecylsulfonate / tetrabutylammonium bromide mixed aqueous solution, stir for 1 hour, filter, dry at 100°C for 1 hour, cool...

Embodiment 2

[0022] Wash linen in tap water and tumble dry.

[0023] Dissolve ammonium nitrate, ethylenediamine, urea, and magnesium nitrate in deionized water. The concentration of ammonium nitrate is 10g / L, the concentration of ethylenediamine is 10g / L, the concentration of urea is 10g / L, and the concentration of magnesium nitrate is 10g / L. Ammonia solution was obtained.

[0024] Put 5 g of washed flax in 50 mL of ammoniated solution, place it at 50°C for 10 minutes, rinse and dry to obtain ammoniated flax.

[0025] Sodium dodecylsulfonate and tetrabutylammonium bromide are dissolved in deionized water, the mass concentration of sodium dodecylsulfonate is 10%, and the mass concentration of tetrabutylammonium bromide is 10%, to obtain ten Sodium dialkylsulfonate / tetrabutylammonium bromide mixed aqueous solution.

[0026] Put 10g of titanium dioxide in 100mL sodium dodecylsulfonate / tetrabutylammonium bromide mixed aqueous solution, stir for 1 hour, filter, dry at 100°C for 1 hour, cool, ...

Embodiment 3

[0030] Wash the linen under running water and dry.

[0031] Dissolve ammonium nitrate, ethylenediamine, urea, and magnesium nitrate in deionized water, the concentration of ammonium nitrate is 6g / L, the concentration of ethylenediamine is 7g / L, the concentration of urea is 8g / L, and the concentration of magnesium nitrate is 9g / L. Ammonia solution was obtained.

[0032] Put 50g of washed flax in 500mL of ammoniated solution, place it at 50°C for 10 minutes, rinse and dry to obtain ammoniated flax.

[0033] Sodium dodecylsulfonate and tetrabutylammonium bromide are dissolved in deionized water, the mass concentration of sodium dodecylsulfonate is 6%, and the mass concentration of tetrabutylammonium bromide is 9%. Sodium dialkylsulfonate / tetrabutylammonium bromide mixed aqueous solution.

[0034] Put 100g of titanium dioxide in 800mL sodium dodecylsulfonate / tetrabutylammonium bromide mixed aqueous solution, stir for 1 hour, filter, dry at 100°C for 1 hour, cool, wash with deion...

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PUM

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Abstract

The invention belongs to the field of soil remediation materials and relates to a method for preparing a titanium dioxide composite material for remedying farmland soil contaminated by phentriazophos. According to the method for preparing the titanium dioxide composite material for remedying the farmland soil contaminated by the phentriazophos, modified titanium dioxide is combined into porous channels of ammonified flax. The method specifically comprises the steps of washing of the flax, ammonification of the flax, modification of the titanium dioxide, preparation of the composite material and the like. The titanium dioxide composite material prepared through the method has the advantages that (1) the titanium dioxide is fixed into the flax by means of carbonic acid propyl ester, and thus both the characteristics of the flax of being low in density and large in specific surface area and the advantage of the modified titanium dioxide of being high in the phentriazophos degrading and catalyzing capacity are brought into play; (2) compared with titanium dioxide powder, both the problem that the titanium dioxide powder agglomerates and cakes and is low in catalyzing capacity and the problem that the fertility of soil is lowered due to the fact that it is difficult to recover a titanium dioxide catalyzer are solved; and (3) the functions of the flax are expanded, and the economic value of waste flax is increased.

Description

technical field [0001] The invention belongs to the technical field of soil repair materials, and in particular relates to a preparation method of a titanium dioxide composite material for repairing triazophos-contaminated farmland soil. Background technique [0002] Pesticide pollution refers to the pollution caused by pesticides or their harmful metabolites and degradation products to the environment and organisms. Pesticides and their degradation products in the natural environment pollute the air, water and soil, destroy the ecosystem, and cause acute or chronic poisoning of humans, animals and plants. After the application of pesticides, some of them are attached to the plants, or penetrate into the plants and remain, polluting food, vegetables, fruits, etc.; the other part is scattered on the soil (sometimes it is directly applied to the soil) or evaporates and dissipates into the air It may flow into rivers and lakes with rainwater and farmland drainage, polluting wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08
CPCB09C1/08
Inventor 蓝碧健
Owner TAICANG BIQI NEW MATERIAL RES & DEV
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