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Formaldehyde adsorption material and application thereof

A formaldehyde adsorption and carbon material technology, applied in other chemical processes, gas treatment, membrane technology, etc., can solve the problems of slow adsorption speed, complex process, poor adsorption capacity of adsorbate, etc., and achieve good adsorption capacity, good bonding strength, The effect of improving the comprehensive utilization efficiency

Active Publication Date: 2018-09-04
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing preparation methods, the process is complex, or there are defects such as poor adsorption capacity of the adsorbate and slow adsorption speed, which limits its application to a certain extent.

Method used

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  • Formaldehyde adsorption material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of S1 soybean protein hydrolyzate

[0040] Add 100g of soybean derivatives (commercially available soybean protein isolate is used in this example) into the reactor, add 800g of deionized water, stir evenly, raise the temperature to 55°C within 10min, and adjust the temperature with 20% NaOH solution The pH value was 9.5, and after 60 minutes of heat preservation, it was hydrolyzed in a high-temperature and high-pressure (121°C, working pressure of 80kPa) pot for 30 minutes to obtain soybean protein hydrolyzate (HSPI).

[0041] S2 Preparation of film-coated straw fiber sheet activated granular carbon material (formaldehyde adsorption material)

[0042] (1) Remove the debris on the surface of the discarded straw fiber-based panel particleboard scraps, and crush them to 60 mesh (40-60 mesh is acceptable); add 100g of powder to 200ml with a molar concentration of 2mol / L (molar concentration of 0.5 -2mol / L) oxalic acid solution, soak for 1h, filter with vacuum ...

Embodiment 2

[0053] Preparation of S1 soybean protein hydrolyzate

[0054] Add 100g of soybean protein isolate into the reaction kettle, add 500g of deionized water, stir evenly, slowly raise the temperature to 55°C, adjust the pH value to 9.5 with NaOH solution with a mass fraction of 20%, keep it warm for 30min, and place it in a high-temperature and high-pressure cooker Internal hydrolysis for 30 minutes to obtain soybean protein hydrolyzate (HSPI).

[0055] S2 Preparation of film-coated straw fiber sheet activated granular carbon material

[0056] (1) Remove the debris on the surface of discarded straw fiber-based panel particleboard scraps, and crush them to 40 mesh; add 100g of powder into 1000ml of oxalic acid solution with a molar concentration of 0.5mol / L, soak for 8 hours, and filter with a vacuum pump. A pickling powder is obtained.

[0057] (2) Mix and granulate 100g of dried pickling powder, 15g of nano-diatomite, 10g of kaolin and 25g of soybean protein adhesive, with a par...

Embodiment 3

[0060] Preparation of S1 soybean protein hydrolyzate

[0061] Add 100 g of soybean derivatives such as soybean protein isolate into the reactor, add 600 g of deionized water, stir evenly, slowly raise the temperature to 55 ° C, adjust the pH value to 9.5 with a 20% NaOH solution, and keep it warm for 50 min. Place it in a high-temperature and high-pressure cooker for 30 minutes to obtain soybean protein hydrolyzate (HSPI).

[0062] S2 Preparation of film-coated straw fiber sheet activated granular carbon material

[0063] (1) Remove the impurities on the surface of discarded straw fiber-based panel particleboard scraps, and crush them to 60 mesh; add 100g of powder into 600ml of oxalic acid solution with a molar concentration of 1mol / L, soak for 6h, and filter with a vacuum pump to obtain Pickling powder.

[0064] (2) Mix and granulate 100g of dried pickling powder, 25g of nano-diatomaceous earth and 80g of soybean protein adhesive, with a particle size of 1-5mm, and dry in ...

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Abstract

The invention discloses a formaldehyde adsorption material and application thereof. The material is prepared through a method including the steps of a, adding straw fiber panel leftover materials to an oxalic acid solution to be soaked and dried; b, mixing acid-pickled straw fiber panel powder, a modifier and a soybean protein adhesive to be granulated and soaked in a ZnCl2 solution, conducting suction filtration and product drying, and conducting carbonizing, cleaning and drying; c, preparing soybean protein hydrolysate from soybean derivatives; d, soaking the product in the step b in the soybean protein hydrolysate, and conducting suction filtration and drying to obtain the formaldehyde adsorption material. By means of the method, indoor and outdoor straw fiber artificial panel leftovermaterials and like are all resourcefully used, rich channels are formed in the materials after the materials are modified and activated, the contact time and contact area of gas and an adsorbent are effectively prolonged and increased, the adsorption resistance is reduced, the dispersing speed of adsorbate is greatly increased, the adsorption of adsorbate molecules is facilitated, and the effective adsorption of indoor formaldehyde is realized.

Description

technical field [0001] The invention relates to an adsorption preparation for eliminating harmful chemical substances, in particular to a formaldehyde adsorption material and its application. Background technique [0002] The problem of long-term sustained release of indoor formaldehyde (HCHO) (main sources such as adhesives in plywood, large-core board, MDF, and particle board) cannot be ignored. When the board is preheated and deliquescent, the formaldehyde in the adhesive is released. Formaldehyde is a colorless, strong-smelling irritating gas that can bind to proteins. After inhaling high-concentration formaldehyde, there will be severe irritation and edema of the respiratory tract, eye stinging, headache, bronchial asthma, and even throat cancer. , skin cancer, leukemia and other diseases. Formaldehyde has been identified as carcinogenic and teratogenic substances by the World Health Organization, and is one of generally recognized potential mandatory mutagens. Long-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B01D53/02
CPCB01D53/02B01D2257/70B01J20/12B01J20/14B01J20/20B01J20/24B01J2220/4825
Inventor 孙恩惠曲萍黄红英雍宬徐跃定
Owner JIANGSU ACAD OF AGRI SCI
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