CN102580688A - Adsorbing material for removing indoor formaldehyde gas - Google Patents
Adsorbing material for removing indoor formaldehyde gas Download PDFInfo
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- CN102580688A CN102580688A CN201210043676XA CN201210043676A CN102580688A CN 102580688 A CN102580688 A CN 102580688A CN 201210043676X A CN201210043676X A CN 201210043676XA CN 201210043676 A CN201210043676 A CN 201210043676A CN 102580688 A CN102580688 A CN 102580688A
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- formaldehyde
- sorbing material
- formaldehyde gas
- adsorbing material
- crosslinking agent
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Abstract
The invention discloses an adsorbing material for removing an indoor formaldehyde gas, which is prepared by following raw materials by weight: 5-8 parts of tannin, 2-5 parts of collagen fibers and 3-8 parts of crosslinking agent. A preparation method of the adsorbing material comprises the steps of: firstly, adding persimmon powder and cowhide collagen fibers in distilled water and stirring to dissolve; adding the crosslinking agent and adjusting the pH value to 6-7; and heating the reactant in a water bath, filtering, drying and smashing to obtain the adsorbing material capable of adsorbing the formaldehyde gas. The adsorbing material disclosed by the method is low in cost, good in physical stability, excellent in formaldehyde adsorption effect, and has no secondary pollution to the environment, so that the adsorbing material can be widely used for removing the formaldehyde gas pollutant indoors or in public places.
Description
Technical field
The invention belongs to the indoor air purification technical field, particularly a kind of sorbing material of removing indoor formaldehyde gas.
Background technology
Along with rapid development of economy; Improving constantly of people's living standard; The finishing in house more and more comes into one's own, and the material of easy generation pernicious gases such as using some ornaments, wood floors, wall material, furniture is more and more favored by Modern Family, formaldehyde gas the most commonly in these gas pollutants; Formaldehyde is a kind of colourless, gas that intense stimulus property smell is arranged, is gaseous state under the normal temperature.Preferentially control on the list at China's toxic chemical; Formaldehyde occupies second; It is the higher material of a kind of toxicity; Also be one of potential strong teratogenesis, carcinogen, general formaldehyde all can exceed standard in the newly-decorated house, and State Standard of the People's Republic of China's " sanitary standard of formaldehyde in the indoor air " regulation: the maximum permissible concentration of formaldehyde is 0.08mg/m in the indoor air
3, and the concentration of the house formaldehyde in indoor air of newly fitting up often can reach 1mg/m
3More than, have in addition 5mg ~ 8mg/m
3, formaldehyde is volatile, release time is long, harm is big, has become the problem that can not be ignored in people's daily life.The method of removing at present this type harmful substance mainly comprises: the one, physisorphtion, the loose structure that has like active carbon, big specific area are adsorbed on the material formaldehyde removing formaldehyde, though but active carbon price not high needs often change.The 2nd, chemical method, the chemical classes air is administered product and is mainly obtained through artificial synthesis mode, wherein much is aromatic compound.Aromatic compound nearly all contains to be proved to be or to have doubted and is the benzene ring compound of carcinogen.In addition, a lot of chemical products have oxidisability, corrosivity, easily vessel are caused damage, and also can cause damage to operating personnel and inhabitation personnel.Sealing masking property product is when filming aging and situation such as weather sweltering heat, humidity occurs, and breakage just appears in film easily, and harmful substances such as formaldehyde can discharge again, become " time bomb " that family hides.The 3rd, the product of employing photocatalysis principle is coated some catalyst on sorbing material, utilize sunlight and airborne oxygen that oxidation of formaldehyde is fallen, and photocatalyst in the market is exactly this series products, about about 20 yuan of every square metre control expense, and price is more expensive.The 4th, plant method, a lot of plants have the function that absorbs pernicious gases such as formaldehyde, like bracketplant, sansevieria trifasciata, ivy, aloe etc., formaldehyde are converted into other materials, but this absorption and instability and the speed that deals with are slow.Above-mentioned material and method all have certain effect to removing formaldehyde, but yet have saturated, the limitation such as reproducibility is poor, use cost height of absorption easily.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of preparation technology is comparatively simple, suction-operated is strong, easy to use and cost is low, the environmental formaldehyde gas sorbing material of nonhazardous.
The technical scheme that realizes the object of the invention is: based on containing the great deal of tannin molecule in the persimmon powder, utilize polyphenol that tannin has and aldehyde radical condensation reaction and remove formaldehyde.
A kind of sorbing material of removing indoor formaldehyde gas, it is processed by following raw material by weight: persimmon powder 5-8, cattle-hide collagen fibers 2-5, crosslinking agent 3-8.Its preparation method comprises the steps:
(1) persimmon powder and cattle-hide collagen fibers are joined stirring and dissolving in the distilled water;
(2) add crosslinking agent, regulate pH value to 6 ~ 7;
(3) step (2) gained reactant is carried out the water-bath heating;
(4) promptly obtain the sorbing material of ability absorbing formaldehyde gas after filtering, dry, pulverizing.
Described persimmon powder of step (1) and cattle-hide collagen fibers are prior art.
The described crosslinking agent of step (2) is that mass percent is 25% glutaraldehyde water solution.
The described bath temperature of step (3) is 50 ℃, and the water-bath time is 3 hours.
The described bake out temperature of step (4) is 60 ℃, and the time is 12 hours.
The present invention has the following advantages and characteristic
Tannin soluble in water with polar organic solvent in, therefore be difficult to directly be used for the processing of formaldehyde waste liquid or gas, and thisly be solidificated in the suprabasil persimmon tannin of collagenous fibres by glutaraldehyde, have the characteristics of water insoluble and multiple organic solvent; Recording its thermal denaturation temperature with differential scanning calorimeter (DSC) is 156 ~ 175 ℃, promptly has heat endurance preferably, and service condition is temperature influence not; Be the animals and plants composition as adsorbent because it is originated, and can environment do not polluted; It also have with low cost, adsorption rate is fast, capacity is big; Be a kind of new and effective sorbing material that has the prospect of marketing, the removal of the formaldehyde gas that can be widely used in being volatilized by ornament materials, furniture, floor etc. after the indoor particularly house decoration.
The specific embodiment
Through a specific embodiment and application implementation example the present invention is further described below.
A kind of preparation method who removes the sorbing material of indoor formaldehyde gas comprises the steps:
With persimmon powder 60g, cattle-hide collagen fibers 15g, join in the 1000ml distilled water, 25 ℃ of following stirring reactions 20 hours; Add the 22.5ml laboratory and use 25% glutaraldehyde water solution, 25 ℃ of following stirring reactions 1 hour; After reaction finished, the pH that uses the pH tester to record solution was 5.0; Regulate pH to 6.4 with the NaOH aqueous solution of 1mol/L again, then reactant is put into there-necked flask, 50 ℃ of following water-baths 3 hours; Take out with circulation ability of swimming vavuum pump vacuumizing filtration,, obtain adsorbable formaldehyde gas sorbing material 60g 60 ℃ of following vacuum drying 12 hours;
Application implementation example 1
(1) gets the formaldehyde gas sorbing material 2g for preparing, after fully grinding, filter out little and the particle of particle diameter with big specific area with 100 mesh.To be that 36 ~ 38% formalin is diluted to about 1ml solution and is equivalent to 1mg formaldehyde from the content of buying on the market, and use iodimetric titration to demarcate its accurate concentration and be 0.98mg/ml, calibrated formalin and phenol reagent will be reacted; Generate piperazine; Piperazine is generated the blue-green compound by the iron ion oxidation in acid solution, after 15 minutes, develop the color under the room temperature, then colorimetric assay; Adopt the phenol reagent AAS to make its concentration-absorbance calibration curve, recording its maximum absorption wavelength is 630nm;
(2) use beaker to measure concentration as each 50ml of 0.98mg/ml formaldehyde standard liquid, place two airtight glass containers, one group bottom is placed the solidified tannin adsorbent of 5g uniformly therein; Another group is done blank, and two groups of containers are placed the insulating box of (25 ℃) under the normal temperature, makes its Static Adsorption formaldehyde gas; After 12 hours two groups of formalins are taken out, press the phenol reagent AAS and generate blue compound, colorimetric assay with the phenol reagent reaction respectively; Find that the color that adds the adsorbent group obviously is shallower than blank control group, explain that concentration of formaldehyde has remarkable reduction, survey its absorption back liquor capacity and absorbance; And calculate its concentration by calibration curve, by Q=(C
0* V
0-C
1* V
1)/m, the formaldehyde 10.7mg that calculated every gram adsorbents adsorb.
Application implementation example 2
Method of operating by application implementation example 1; Different is: the sieve aperture of selecting for use after the sorbing material that makes is ground changes 150 orders into; With its absorbance of phenol reagent spectrophotometry; And according to the formaldehyde calibration curve of having made, calculating above-mentioned every gram sorbing material, to have adsorbed formaldehyde be 11.3mg.
Application implementation example 3
Method of operating by application implementation example 1; Different is: the sieve aperture of selecting for use after the sorbing material that makes is ground changes 200 orders into; With its absorbance of phenol reagent spectrophotometry; And according to the formaldehyde calibration curve of having made, calculating above-mentioned every gram sorbing material, to have adsorbed formaldehyde be 12.8mg.
Application implementation example 4
Method of operating by application implementation example 1; Different is: only the temperature of insulating box is changed and be set at 30 ℃; To accelerate the volatilization of formaldehyde; Still adopt its absorbance of phenol reagent spectrophotometry, and according to the formaldehyde calibration curve of having made, calculating above-mentioned every gram sorbing material, to have adsorbed formaldehyde be 10.8mg.
Application implementation example 5
Method of operating by application implementation example 1; Different is: only the temperature of insulating box is changed and be set at 35 ℃; To accelerate the volatilization of formaldehyde; Still adopt its absorbance of phenol reagent spectrophotometry, and according to the formaldehyde calibration curve of having made, calculating above-mentioned every gram sorbing material, to have adsorbed formaldehyde be 11.5mg.
Application implementation example 6
Method of operating by application implementation example 1; Different is: only the time with Static Adsorption changes 24h into; With its absorbance of phenol reagent spectrophotometry, and according to the formaldehyde calibration curve of having made, calculating above-mentioned every gram sorbing material, to have adsorbed formaldehyde be 13.2mg.
Application implementation example 7
Method of operating by application implementation example 1; Different is: only the time with Static Adsorption changes 36h into; With its absorbance of phenol reagent spectrophotometry, and according to the formaldehyde calibration curve of having made, calculating above-mentioned every gram sorbing material, to have adsorbed formaldehyde be 14.9mg.
Claims (5)
1. sorbing material of removing indoor formaldehyde gas, it is characterized in that: it is processed by following raw material by weight: tannin 5 ~ 8, collagenous fibres 2 ~ 5, crosslinking agent 3 ~ 8.
2. the described a kind of sorbing material of removing indoor formaldehyde gas of claim 1, it is characterized in that: the preparation method comprises the steps:
(1) persimmon powder and cattle-hide collagen fibers are joined stirring and dissolving in the distilled water;
(2) add crosslinking agent, regulate pH value to 6 ~ 7;
(3) step (2) gained reactant is carried out the water-bath heating;
(4) promptly obtain the sorbing material of ability absorbing formaldehyde gas after filtering, dry, pulverizing.
3. sorbing material according to claim 1 and 2 is characterized in that: the said crosslinking agent of step (2) is that mass percent is 25% glutaraldehyde water solution.
4. sorbing material according to claim 2 is characterized in that: the described water bath heating temperature of step (3) is 50 ℃, and the water-bath time is 3 hours.
5. sorbing material according to claim 2 is characterized in that: the described bake out temperature of step (4) is 60 ℃, and the time is 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043676XA CN102580688A (en) | 2012-02-24 | 2012-02-24 | Adsorbing material for removing indoor formaldehyde gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043676XA CN102580688A (en) | 2012-02-24 | 2012-02-24 | Adsorbing material for removing indoor formaldehyde gas |
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| CN102580688A true CN102580688A (en) | 2012-07-18 |
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| CN201210043676XA Pending CN102580688A (en) | 2012-02-24 | 2012-02-24 | Adsorbing material for removing indoor formaldehyde gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525143A (en) * | 2014-12-25 | 2015-04-22 | 庞凤梅 | Formaldehyde adsorption material and preparation method thereof |
| CN110509384A (en) * | 2018-05-21 | 2019-11-29 | 河北农业大学 | Green persimmon extraction product for controlling formaldehyde release |
| CN111841505A (en) * | 2020-07-24 | 2020-10-30 | 西南科技大学 | Preparation method of collagen fiber aerogel material for efficiently capturing iodine vapor |
| CN112371123A (en) * | 2020-11-27 | 2021-02-19 | 嘉兴学院 | Supported silver-doped manganese dioxide catalyst and preparation method and application thereof |
| CN113304580A (en) * | 2021-05-28 | 2021-08-27 | 虚静科技(广州)有限责任公司 | VOCs gas adsorption equipment based on persimmon tannin |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410157A (en) * | 2002-11-27 | 2003-04-16 | 四川大学 | Collagen fiber solidified tannin adsorptive material and its preparation method and its adsorption and separation of metallic ion |
| CN101294349A (en) * | 2008-06-19 | 2008-10-29 | 四川大学 | Collagen fiber stem grafting tannic acid and method for loading palladium catalyst |
| KR20110001249A (en) * | 2009-06-30 | 2011-01-06 | (주)선진환경 | Manufacturing method of bio-absorbent using collagen of raw hide and bio-absorbent therefrom |
-
2012
- 2012-02-24 CN CN201210043676XA patent/CN102580688A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410157A (en) * | 2002-11-27 | 2003-04-16 | 四川大学 | Collagen fiber solidified tannin adsorptive material and its preparation method and its adsorption and separation of metallic ion |
| CN101294349A (en) * | 2008-06-19 | 2008-10-29 | 四川大学 | Collagen fiber stem grafting tannic acid and method for loading palladium catalyst |
| KR20110001249A (en) * | 2009-06-30 | 2011-01-06 | (주)선진환경 | Manufacturing method of bio-absorbent using collagen of raw hide and bio-absorbent therefrom |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525143A (en) * | 2014-12-25 | 2015-04-22 | 庞凤梅 | Formaldehyde adsorption material and preparation method thereof |
| CN110509384A (en) * | 2018-05-21 | 2019-11-29 | 河北农业大学 | Green persimmon extraction product for controlling formaldehyde release |
| CN110509384B (en) * | 2018-05-21 | 2022-03-22 | 河北农业大学 | Green persimmon extraction product for controlling formaldehyde release |
| CN111841505A (en) * | 2020-07-24 | 2020-10-30 | 西南科技大学 | Preparation method of collagen fiber aerogel material for efficiently capturing iodine vapor |
| CN111841505B (en) * | 2020-07-24 | 2022-03-04 | 西南科技大学 | Preparation method of collagen fiber aerogel material for efficiently capturing iodine vapor |
| CN112371123A (en) * | 2020-11-27 | 2021-02-19 | 嘉兴学院 | Supported silver-doped manganese dioxide catalyst and preparation method and application thereof |
| CN113304580A (en) * | 2021-05-28 | 2021-08-27 | 虚静科技(广州)有限责任公司 | VOCs gas adsorption equipment based on persimmon tannin |
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Application publication date: 20120718 |