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Preparation method of environment-friendly indoor poisonous gas adsorbent

A toxic gas and adsorbent technology, applied in the field of air purification, can solve the problems of complicated treatment procedures, low removal rate, and excessive formaldehyde, and achieve the effect of simple removal of formaldehyde, good adsorption effect, and high removal rate

Active Publication Date: 2016-01-20
珠海华泽生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention: after the current interior decoration, the free formaldehyde will often seriously exceed the standard, causing harm to the indoor space and the human body. The procedure is very complicated and the cost is relatively high. It provides an environmentally friendly preparation method for indoor toxic gas adsorbents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020]First, take 0.1mol tetrabutyl titanate and pour it into 300mL of absolute ethanol, disperse and stir with a high-speed disperser until a uniform and transparent solution 1 is formed, then weigh 5g of chitosan powder, and dissolve it in 50mL of acetic acid with a mass concentration of 80%. solution, placed on a magnetic stirrer, stirred at a speed of 200r / min for 15min to form a homogeneous solution 2; then the solution 2 prepared above was added dropwise into solution 1 with a syringe, and kept stirring at a speed of 200r / min for 1h, Form a uniform chitosan / titanium dioxide sol, then put it into an incubator, age at 35°C for 2 days, put the dry sol in an oven, dry it at 60°C for 10 hours, and then put it into a mortar and grind it into powder. Put it into a muffle furnace and calcinate at a high temperature of 400°C for 2 hours to obtain nano-titanium dioxide chitosan photocatalytic powder, which is set aside; then take 200g of fresh Chlorophytum leaves, wash the surface ...

example 2

[0023] First, take 0.15mol of tetrabutyl titanate and pour it into 350mL of absolute ethanol, disperse and stir with a high-speed disperser until a uniform and transparent solution 1 is formed, then weigh 7g of chitosan powder, and dissolve it in 80mL of acetic acid with a mass concentration of 80%. solution, place it on a magnetic stirrer, and stir at a speed of 250r / min for 17min to form a uniform solution 2; then use a syringe to add the above-prepared solution 2 dropwise into solution 1, and keep stirring at a speed of 250r / min for 1.5h , to form a uniform chitosan / titanium dioxide sol, then put it in an incubator, age at 40°C for 2.5 days, put the dry sol in an oven, dry at 65°C for 13h, and then put it into a mortar and grind it into powder , put it into a muffle furnace, and calcined at a high temperature of 450 ° C for 2.5 hours to obtain nano-titanium dioxide chitosan photocatalytic powder, which is used for later use; then take 250 g of fresh Chlorophytum leaves, wash...

example 3

[0026] First, take 0.2mol of tetrabutyl titanate and pour it into 400mL of absolute ethanol, disperse and stir with a high-speed disperser until a uniform and transparent solution 1 is formed, then weigh 10g of chitosan powder, and dissolve it in 100mL of acetic acid with a mass concentration of 80%. solution, placed on a magnetic stirrer, and stirred at a speed of 300r / min for 20min to form a homogeneous solution 2; then use a syringe to add the above-prepared solution 2 dropwise into solution 1, and keep stirring at a speed of 300r / min for 2h, Form a uniform chitosan / titanium dioxide sol, then put it into an incubator, age at 45°C for 3 days, put the dry sol in an oven, dry it at 70°C for 15h, and then put it into a mortar and grind it into powder. Put it into a muffle furnace and calcinate at a high temperature of 500 ° C for 3 hours to obtain nano-titanium dioxide chitosan photocatalytic powder, which will be used for later use; then take 300 g of fresh Chlorophytum leaves,...

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PUM

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Abstract

The invention discloses a preparation method of an environment-friendly indoor poisonous gas adsorbent and belongs to the field of air purification. Nano titanium dioxide and chitosan photocatalytic powder is prepared with a sol titration method, then Chlorophytum comosum essence is obtained through enzymolysis and concentration of Chlorophytum comosum leaves and used for indoor formaldehyde purification, then corn starch and egg white are taken as crosslinking agents, the photocatalytic powder and the Chlorophytum comosum essence are mixed into a paste and loaded in porous and loose half-enzymolysis peanut shells, cracks of the peanut shells are sealed with rice bran wax and dried, and the environment-friendly indoor poisonous gas adsorbent is obtained. Examples prove that the operation is simple and easy, the absorption effect is remarkable, the removal rate is higher than 99%, the treating cost is lower, and harm to a human body and the environment is avoided.

Description

technical field [0001] The invention discloses a preparation method of an environment-friendly indoor toxic gas adsorbent, which belongs to the field of air purification. Background technique [0002] Toxic gas, as the name suggests, is a gas that is harmful to the human body and can cause poisoning. Common toxic gases are carbon monoxide, sulfur dioxide, chlorine gas, chemical poisonous gas, phosgene, diphosgene, hydrogen cyanide, mustard gas, formaldehyde, etc. [0003] With the improvement of people's living standards, interior decoration is very common. However, aldehyde (such as urea-formaldehyde, phenolic, etc.) production plants, synthetic flooring (plywood, density board, etc.) etc.), the free formaldehyde will cause serious pollution to the indoor space. Not only that, formaldehyde has a pungent smell, which can be smelled at low concentrations. The human smell threshold for formaldehyde is usually 0.06-0.07mg / m3. However, there are large individual differences, a...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/22B01D53/02
Inventor 丁玉琴林大伟张帆
Owner 珠海华泽生物科技有限公司
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