Formaldehyde scavenger and preparation method thereof

Abstract

The invention relates to the technical field of formaldehyde air pollution treatment, in particular to a composite formaldehyde scavenger of activated carbon fiber loaded amino acid and a preparationmethod thereof. The formaldehyde scavenger is activated carbon fiber loaded amino acid, the mass ratio of the amino acid to the activated carbon fiber is 0.001-0.4:1, the amino acid comprises at leastone of glycine, alanine, arginine, lysine, proline and serine, and the activated carbon fiber carrier is activated carbon fiber honeycomb filter cotton or activated carbon fiber felt. The preparationmethod includes: firstly, dissolving amino acid in water to obtain a solution with a concentration of 0.01-20%; and putting an activated carbon fiber product into the solution, conducting soaking for0.5-24h for adsorption loading, then taking the activated carbon fiber product out of the solution, and conducting drying to obtain the formaldehyde scavenger. The formaldehyde scavenger provided bythe invention has no dust problem, provides a barrier-free network type carrier material with a large specific surface area for amino acid, can be for repeated loading, and is efficient, safe, simpleand convenient.

Description

technical field [0001] The invention relates to the technical field of formaldehyde air pollution control, in particular to a composite formaldehyde scavenger loaded with amino acids on activated carbon fibers and a preparation method thereof. Background technique [0002] After the decoration of new houses, there will generally be excessive formaldehyde. Formaldehyde is very harmful to the human body. Short-term exposure to high concentrations of formaldehyde can irritate the mucous membranes and cause symptoms such as tearing, sore throat, coughing, shortness of breath, and dyspnea. Long-term exposure can cause cancer, leukemia, fetal malformation in pregnant women, and chronic respiratory diseases. Children, the elderly, pregnant women and other people who have been indoors for a long time and have low immunity are most harmed by formaldehyde. The control of indoor formaldehyde is very important. [0003] The main factors affecting the concentration of formaldehyde ar...

AI Technical Summary

Problems solved by technology

Activated carbon powder and granules, diatomaceous earth, and shell powder are widely used physical adsorbents. Although these materials can provide large surface areas and low prices, powder or granules that are easy to fall off are difficult to obtain during loading, drying and There will be dust problems during regeneration and reuse. In addition, the outer surface area (that is, the direct contact area with the air) of powder and granular materials is small and the pore size of the inner space is small, which will lead to two disadvantages. One is that the formaldehyde reaches the adsorption site. The diffusion path is long, the diffusion resistance is large, and the adsorption rate is slow. One is that the amino acid crystallization during the loading process and the reaction products during the treatment process are easy to block the internal channels of the material.

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