A kind of formaldehyde scavenger and preparation method thereof

Abstract

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. The formaldehyde scavenger is activated carbon fibers loaded with amino acids, the mass ratio of amino acids to activated carbon fibers is 0.001-0.4:1, and the amino acids include at least one of glycine, alanine, arginine, lysine, proline and serine One, the activated carbon fiber carrier is activated carbon fiber honeycomb filter cotton or activated carbon fiber felt. Firstly, the amino acid is dissolved in water to obtain a solution with a concentration of 0.01-20%. Then, the activated carbon fiber product is soaked in the solution for 0.5-24 hours, adsorbed and loaded, taken out from the solution, and dried to obtain a formaldehyde scavenger. The formaldehyde scavenger of the present invention has no dust problem, provides a non-blocking network type carrier material with a large specific surface area for amino acids, and can be repeatedly loaded. The formaldehyde scavenger is efficient, safe, simple and 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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