CN107876022B - Preparation method of formaldehyde adsorbent - Google Patents

Preparation method of formaldehyde adsorbent Download PDF

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Publication number
CN107876022B
CN107876022B CN201711026121.3A CN201711026121A CN107876022B CN 107876022 B CN107876022 B CN 107876022B CN 201711026121 A CN201711026121 A CN 201711026121A CN 107876022 B CN107876022 B CN 107876022B
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parts
weight
formaldehyde
formaldehyde adsorbent
adsorbent
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CN201711026121.3A
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Chinese (zh)
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CN107876022A (en
Inventor
丘少荣
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泰州远创新材料科技有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/14—Diatomaceous earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/16—Alumino-silicates
    • B01J20/165—Natural alumino-silicates, e.g. zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil

Abstract

The invention relates to a preparation method of a formaldehyde adsorbent, which comprises the following steps: the formaldehyde adsorbent is prepared by mixing and carbonizing raw materials for preparing the formaldehyde adsorbent at high temperature according to the mixture ratio of 40-120 parts by weight of coconut shells, 20-60 parts by weight of shaddock peels, 20-50 parts by weight of silicon dioxide, 10-40 parts by weight of diatomite and 2-12 parts by weight of cedar twigs. The formaldehyde adsorbent has the advantages of low cost, convenient use and simple process, and can continuously and thoroughly eliminate the adsorption effect of formaldehyde.

Description

Preparation method of formaldehyde adsorbent

Technical Field

The invention particularly relates to the field of formaldehyde adsorbents, and more particularly relates to a preparation method of a formaldehyde adsorbent.

Background

Indoor air pollutants include some indoor toxic and harmful gases, such as formaldehyde, benzene, ammonia, carbon oxides, and the like. Formaldehyde is one of the main pollutants of indoor air, is also the most common, serious and most concerned pollutant, and has wide sources. A great deal of research at home and abroad shows that a great deal of decorative materials, furniture and coatings used in the decoration process are main release sources of indoor air pollution, such as building structural materials and decorative materials. The formaldehyde mainly exists in the deep part of the decorative material, has the characteristics of slow release speed, long release time and the like, the existing adhesives have various varieties, the most used adhesive in decoration is the formaldehyde resin, mainly prepared by the condensation reaction of urea and formaldehyde, and the formaldehyde is the most main reason for causing the overproof formaldehyde in the indoor air.

With the improvement of the quality of life of people, the indoor air purification becomes a problem which is generally concerned by people. Formaldehyde has attracted great attention as the first killer of indoor air. Indoor furniture such as a cupboard and a bookcase can emit formaldehyde, and the volatilization of the formaldehyde is a slow process. The long-term exposure to low-concentration formaldehyde can cause great threat to human health. Therefore, the solution of indoor formaldehyde pollution is the important factor for indoor environmental control.

Disclosure of Invention

The invention provides a preparation method of a formaldehyde adsorbent, which has the advantages of low cost, convenient use, simple process and capability of continuously and thoroughly eliminating the formaldehyde adsorption effect.

The technical scheme adopted by the invention is as follows:

a method of making a formaldehyde adsorbent, the method comprising: 40-120 parts of coconut shell, 20-60 parts of shaddock peel, 20-50 parts of silicon dioxide, 10-40 parts of diatomite and 2-12 parts of cypress twig, wherein the raw materials for preparing the formaldehyde adsorbent are obtained by mixing and high-temperature carbonization.

Preferably, the formaldehyde adsorbent also comprises 3-15 parts by weight of zeolite.

Preferably, the formaldehyde adsorbent further comprises 2-8 parts by weight of sodium carboxymethyl cellulose.

Preferably, the formaldehyde adsorbent comprises 80-120 parts by weight of coconut shell, 40-60 parts by weight of shaddock peel, 35-50 parts by weight of silicon dioxide, 20-40 parts by weight of diatomite, 5-12 parts by weight of cedar twig, 8-15 parts by weight of zeolite and 5-8 parts by weight of sodium carboxymethylcellulose.

Preferably, the high temperature carbonization comprises the following steps: crushing coconut shells and shaddock peels, sieving with a 200-ion-processed 500-mesh sieve, adding other raw materials, uniformly mixing, carrying out high-temperature oxidation at 550 ℃ for 30-50min, cooling to room temperature, adding hydrogen peroxide, and reacting at 150 ℃ for 1-2 h; washing the treated product with deionized water until the pH value is neutral, and drying to obtain the formaldehyde adsorbent.

Preferably, the coconut shells and the shaddock peels are crushed and sieved by a 350-mesh and 500-mesh sieve.

Preferably, the high-temperature oxidation temperature is 525-550 ℃, and the time is 40-50 min.

Preferably, the reaction temperature after adding the hydrogen peroxide is 140-150 ℃, and the reaction time is 1.5-2 h.

The invention has the beneficial effects that:

firstly, the formaldehyde adsorbent disclosed by the invention adopts coconut shells, shaddock peels, cypress branches and other raw materials, and is matched with silicon dioxide, diatomite, zeolite and sodium carboxymethyl cellulose, so that the formaldehyde adsorbent is reasonable in formula, can thoroughly and strongly adsorb heavy metal elements in soil, is good in adsorption effect, and is simple in use method and low in cost.

Secondly, the formaldehyde adsorbent has wide application range and simple use method, and formaldehyde can be removed by putting the formaldehyde adsorbent into a space polluted by formaldehyde for sufficient reaction.

Thirdly, the formaldehyde adsorbent has low cost and convenient production, the raw materials of the formaldehyde adsorbent are conventional, the raw materials are simple and easy to obtain, the preparation process is simple, and the preparation cost of the formaldehyde adsorbent is effectively reduced.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The invention is further illustrated by the following examples, but is not to be construed as being limited thereto.

Unless otherwise specified, the reagents used in the invention are all commercially available, and different brands of goods do not influence the specific use.

Example 1

Crushing 40 parts by weight of coconut shells and 20 parts by weight of shaddock peels, sieving the crushed materials with a 500-mesh sieve, adding other raw materials, namely 35 parts by weight of silicon dioxide, 10 parts by weight of diatomite, 2 parts by weight of cedar branches, 15 parts by weight of zeolite and 8 parts by weight of sodium carboxymethyl cellulose, uniformly mixing, carrying out high-temperature oxidation at 500 ℃ for 40min, cooling to room temperature, adding hydrogen peroxide, and reacting at 150 ℃ for 1 h; washing the treated product with deionized water until the pH value is neutral, and drying to obtain the formaldehyde adsorbent A.

Example 2

Crushing 80 parts by weight of coconut shells and 60 parts by weight of shaddock peels, sieving the crushed materials with a 350-mesh sieve, adding other raw materials, namely 20 parts by weight of silicon dioxide, 40 parts by weight of diatomite, 5 parts by weight of cedar branches, 8 parts by weight of zeolite and 2 parts by weight of sodium carboxymethyl cellulose, uniformly mixing, carrying out high-temperature oxidation at 525 ℃ for 50min, cooling to room temperature, adding hydrogen peroxide, and reacting at 120 ℃ for 2 h; washing the treated product with deionized water until the pH value is neutral, and drying to obtain the formaldehyde adsorbent B.

Example 3

Crushing 120 parts by weight of coconut shell and 40 parts by weight of shaddock peel, sieving the crushed materials with a 200-mesh sieve, adding other raw materials, namely 50 parts by weight of silicon dioxide, 20 parts by weight of diatomite, 12 parts by weight of cedar twig, 3 parts by weight of zeolite and 5 parts by weight of sodium carboxymethyl cellulose, uniformly mixing, carrying out high-temperature oxidation at 550 ℃ for 30min, cooling to room temperature, adding hydrogen peroxide, and reacting at 140 ℃ for 1.5 h; washing the treated product with deionized water until the pH value is neutral, and drying to obtain the formaldehyde adsorbent C.

Comparative example 1

Comparative example 1 differs from example 1 in that: comparative example 1 contained no coconut shell.

Comparative example 2

Comparative example 2 differs from example 1 in that: comparative example 2 contained no grapefruit peel.

Comparative example 3

Comparative example 3 differs from example 1 in that: comparative example 3 contained no cypress twigs.

Comparative example 4

Comparative example 4 differs from example 1 in that: comparative example 3 contained no coconut shell, grapefruit peel and cedar twigs.

In order to investigate the performance of the formaldehyde adsorbents obtained according to the present invention, formaldehyde adsorption capacity tests were performed on the formaldehyde adsorbents of examples 1 to 3, comparative examples 1 to 4, and some commercially available formaldehyde adsorbents. The specific test method and test results are as follows.

Selecting a 1000ml closed space, respectively placing 1g and 2g of the formaldehyde adsorbents of the embodiments 1-3 and the comparative examples 1-4 and a certain commercially available formaldehyde adsorbent into the closed space, injecting 0.8 microgram of formaldehyde, standing for 24h, pumping out gas in the closed space, introducing into a mixed solution of acetylacetone and ammonium acetate, heating in a constant-temperature water bath at 60 ℃ for 15min, measuring an ultraviolet-visible spectrum after the solution changes color, obtaining the absorbance of a sample, and calculating the residual formaldehyde content in the sample according to a regression equation, thereby obtaining the adsorbed formaldehyde content. The specific test results are shown in table 1.

Table 1 test results of formaldehyde adsorption amount of formaldehyde adsorbent

As can be seen from the results in Table 1, the formaldehyde adsorbent prepared by the method has good heavy metal adsorption effect and wide application prospect.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; as will be readily apparent to those skilled in the art from the disclosure herein, the present invention may be practiced without these specific details; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.

Claims (2)

1. A preparation method of a formaldehyde adsorbent is characterized by comprising the following steps: 40-120 parts of coconut shell, 20-60 parts of shaddock peel, 20-50 parts of silicon dioxide, 10-40 parts of diatomite, 2-12 parts of cacumen biotae, 3-15 parts of zeolite and 2-8 parts of sodium carboxymethylcellulose, wherein the raw materials for preparing the formaldehyde adsorbent are obtained by mixing and carbonizing at high temperature;
the high-temperature carbonization comprises the following steps: crushing coconut shells and shaddock peels, sieving the crushed coconut shells and the shaddock peels with a sieve of 350-; washing the treated product with deionized water until the pH value is neutral, and drying to obtain the formaldehyde adsorbent.
2. The method for preparing the formaldehyde adsorbent according to claim 1, wherein the formaldehyde adsorbent comprises 80-120 parts by weight of coconut shell, 40-60 parts by weight of shaddock peel, 35-50 parts by weight of silica, 20-40 parts by weight of diatomaceous earth, 5-12 parts by weight of cedar twig, 8-15 parts by weight of zeolite, and 5-8 parts by weight of sodium carboxymethylcellulose.
CN201711026121.3A 2017-10-27 2017-10-27 Preparation method of formaldehyde adsorbent CN107876022B (en)

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CN107876022B true CN107876022B (en) 2020-11-13

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101862638A (en) * 2010-02-05 2010-10-20 厦门大学 Preparation method of formaldehyde adsorbing agent
CN102266752A (en) * 2011-06-24 2011-12-07 东北师范大学 Method for preparing carbonizing absorption grains used for purifying water

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101862638A (en) * 2010-02-05 2010-10-20 厦门大学 Preparation method of formaldehyde adsorbing agent
CN102266752A (en) * 2011-06-24 2011-12-07 东北师范大学 Method for preparing carbonizing absorption grains used for purifying water

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