CN109647322A - A kind of biological safe type formaldehyde scavenger and its preparation method and application - Google Patents
A kind of biological safe type formaldehyde scavenger and its preparation method and application Download PDFInfo
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Abstract
The present invention relates to a kind of biological safe type formaldehyde scavengers and its preparation method and application, carry out fermentation a couple of days using the cooked suitable fermenting microbe of addition of soybean, making its Rumen protein fermentation enzymatic hydrolysis is soya-bean polypeptides and amino acid；Distilled water is added later, continues to ferment under air-proof condition after stirring, obtains chyle shape product；It is spray-dried, obtains biological safe type formaldehyde scavenger.It is adjusted to alkalescent after being diluted with water, at room temperature by spraying, smearing or aeration adsorption treatment, can effectively dispel the formaldehyde in room air.The biological safe type formaldehyde scavenger production cost is low, not only have the effect of it is good dispel formaldehyde, and its product for dispelling formaldehyde generation is nontoxic and pollution-free, will not cause secondary pollution to environment.
Description
Technical field
The present invention relates to the technical field of air cleaning more particularly to a kind of biological safe type formaldehyde scavenger and its preparations
Method and purposes.
Background technique
Formaldehyde pollution has been the common one kind of current air pollution, and formaldehyde is widely used leads to indoor environment formaldehyde
Concentration over-standard has also been current domestic and international very severe environmental problem, and problems, which not can avoid, to be pocessed.
Indoor formaldehyde control technology has physisorphtion, Chemo-Therapy logos, photocatalytic method etc. at present, but all methods for dispelling formaldehyde
Be not it is very perfect, being partially can not be completely by formaldehyde removing to below the mark, and part is then the meeting after dispelling formaldehyde
Lead to secondary pollution, these problems are all to solve the problems, such as the difficult point of formaldehyde removal both at home and abroad at present.
Physisorphtion is using porous material as the method for adsorbent material formaldehyde adsorption, in this absorption method often
The active aluminium oxide of the material used, adobe mineral, silica gel, zeolite, activated carbon fibre, molecular sieve etc..Although this
Method is simple for class, and adsorbent material is very extensive, but due to its absorption property by adsorption saturation, contact concentration of formaldehyde,
The influence of the various aspects factor such as room temperature, therefore there are certain limitations for formaldehyde aspect indoors for this method, are not best
Formaldehyde removal method.
The principle of Chemo-Therapy logos is to be destroyed using the chemical activity of formaldehyde and decomposing formaldehyde, passes through sample, addition, network
The reaction such as conjunction, is the nontoxic products such as water, carbon dioxide by Degradation Formaldehyde, reaches the method for eliminating Formaldehyde Pollution of Indoor Air with this.
The common method of Chemo-Therapy logos has very much, and ozone purification method and PARA FORMALDEHYDE PRILLS(91,95) including early stage have spreading out for the potent ammonia for dispelling effect
The method that biology dispels formaldehyde.
Photocatalytic oxidation is a kind of only when light and semiconductor light-catalyst exist simultaneously, using photochemical reaction with
It is catalyzed the combination of reaction, reaches a kind of improvement method for dispelling formaldehyde.And upper most common catalyst is titanium dioxide at present, this
It is the most thorough formaldehyde removing catalyst of domestic and international research.But it only administers by the photocatalysis of titanium dioxide for formaldehyde regulation effect
Also and non-specifically effectively, and ultraviolet light is restriction factor.H Qi, DZ Sun, GQ Chi et al. dispels formaldehyde to photocatalysis and carries out
It is found after research, in UV/TiO2After ozone is added in technique, so that the efficiency that entire technique dispels formaldehyde greatly promotes.But
Expensive raw material price is the big disadvantage that formaldehyde is administered in photocatalysis, from now on, studies light that is cheap, dispelling excellent and urges
Changing formaldehyde remover is also a big hot spot.
Patent application CN103272461A discloses one kind mainly using oxidizing process hydrolyzed vegetable protein, and addition removes aldehyde auxiliary agent
Such as production technology of citric acid, catechin, triethanolamine, active enzyme preparation production vegetable protein formaldehyde scavenger.Production
This vegetable protein formaldehyde scavenger is mainly used for removing, adsorb, the first in formaldehyde or air in decomposition decorating and renovating material
Aldehyde.But vegetable protein chemical oxidization method occurs under (15-20h) heated condition strong for a long time usually with sour water solution (hydrochloric acid)
Reaction, working condition is poor, generates acid mist and corrodes equipment, while having side effect to staff's health.Production process generates useless
Liquid causes environmental pollution.Because reaction condition is violent, partial amino-acid structure is destroyed, while product viscosity reduces, to reduce
Its ability for capturing formaldehyde.
Summary of the invention
The purpose of the invention is to overcome existing formaldehyde scavenger preparation process not perfect, there are secondary pollutions, raw
Problem at high cost is produced, a kind of biological safe type formaldehyde scavenger and its preparation method and application is provided.The biological safe type
Formaldehyde scavenger not only have the effect of it is good dispel formaldehyde, and its product for dispelling formaldehyde generation is nontoxic and pollution-free, no
Secondary pollution can be caused to environment.
The preparation method of biological safe type formaldehyde scavenger provided by the invention is used as using vegetable protein hydrolyzate and is dispelled
The raw material of formaldehyde, using vegetable protein enzymatic hydrolysis object as raw material, advantage is that its raw material facilitates acquisition and cheap, suitable
All residents carry out using.Entire process flow is short, is not related to the raw material of high price, production cost is only commercially available general formaldehyde
The 1/3-1/2 of scavenger.
The present invention also provides the application methods of the biological safe type formaldehyde scavenger, pass through spray after being diluted at room temperature
Mist, smearing or aeration adsorption treatment, all can effectively dispel the formaldehyde in room air or in material.
In the present invention, by soybean processing at cooked, fermentation time can be shortened；Fermenting microbe is mucor, withered grass gemma
At least one of bacillus, rhizopus, micrococcus luteus, preferably mucor and bacillus subtilis are sent out with both bacterium
The product viscosity that ferment obtains is high, and the adsorption effect of PARA FORMALDEHYDE PRILLS(91,95) is preferable；Fermentation process is broadly divided into two stages, and the first stage is half
Sealing condition builds opposite stable environment, meet mucor aerobic fermentation and the fermentation of bacillus subtilis amphimicrobian, reduce
Living contaminants.This stage is mainly conducive to bacterium and fungi quickly breeds, mucor and the hay bacillus shape on fermentation substrate
The subiculum of Cheng Houmi, while part penetrates into matrix deep layer, secretes and accumulating protease makes its protein gradually be hydrolyzed to water
Dissolubility small-molecular peptides and amino acid.Second stage is sealing condition, this stage controls oxygen shape mainly by blending matrix, in closing
The protease that state accumulates the first stage sufficiently contacts infiltration with matrix.Simultaneously make under the action of aerobic-anaerobic microbe protein into
One step is fully hydrolyzed, and obtains protein hydrolysate chyle.By the cooperation of two kinds of fermentation conditions, with realize protein hydrolysis more sufficiently,
The effect that viscosity is reinforced.The temperature of entire fermentation process is 25-28 DEG C, does not need extra heat source, is carried out to installation for fermenting brief
Isothermal holding utilizes the natural heat of fermentation process.Second stage is periodically opened during fermenting exhaust gas is discharged, to distribute
The a small amount of ammonia and mass expanded generated during substrate fermentation overflows, and causes offending smell and waste material.
Concrete scheme is as follows:
A kind of preparation method of biological safe type formaldehyde scavenger, comprising the following steps:
Step 1: to soybean processing at cooked middle addition strain, ferment under the conditions of semiclosed, make the egg in soybean
White matter fermentation enzymatic hydrolysis is polypeptide and amino acid, obtains protein zymolyte；
Step 2: distilled water is added into the protein zymolyte that step 1 obtains, continues to ferment under air-proof condition after stirring,
Obtain chyle shape product；
Step 3: chyle shape product made from step 2 being spray-dried, biological safe type formaldehyde scavenger is obtained.
Further, the cooked bean cotyledon or dregs of beans at least one of ripe for bean curd, boiling in the step 1.
Further, in the step 1 strain be mucor, bacillus subtilis, rhizopus, in micrococcus luteus at least
One kind, the temperature of fermentation are 25-28 DEG C, relative humidity 70%-80%, and the time of fermentation is 3-5 days.
Further, strain is that mucor and bacillus subtilis mix according to mass ratio 2:1 in the step 1, strain
Dosage account for the 0.2-0.4% of cooked gross weight.
Further, the dosage of distilled water accounts for the 10-20% of gross weight in the step 2, to guarantee that smoothly stirring is semi-fluid
Matter to form chyle shape product convenient for sufficiently fermenting.
Further, the temperature fermented in the step 2 is 25-28 DEG C, and the time of fermentation is 1-2 days, fixed during fermentation
Phase opens so that exhaust gas is discharged.
The present invention also protects the preparation method of the biological safe type formaldehyde scavenger, the biological safe type first being prepared
Aldehyde scavenger.
The present invention also protects the purposes of the biological safe type formaldehyde scavenger, by the biological safe type formaldehyde scavenger
Distilled water is added and is diluted to the solution that mass concentration is 1%-10%, after adjusting pH value of solution to alkalescent, with removing at room temperature
Formaldehyde.
Further, pH value of solution is adjusted to 6.0-10.0, preferably 8.0-9.0.
Further, the biological safe type formaldehyde scavenger is with spray pattern, be perhaps filled in aerator or
It is applied to surface containing formaldehyde materials, absorption and closed methanal.
The utility model has the advantages that
The present invention mainly uses enzymatic hydrolysis soybean protein, and reaction condition is mild, does not cause environmental pollution；Obtained product
For small-molecular peptides and amino acid, the amino that product solution had both remained specificity in terms of removing formaldehyde captures group, while molten
The viscosity and foaminess of liquid, permeability enhancing, the ability for capturing formaldehyde is stronger, therefore does not need additional auxiliary agent addition,
Body is diluted to the mass concentration of 1%-10%, and the elimination effect of PARA FORMALDEHYDE PRILLS(91,95) reaches 95% or more, meets requirement.
Specific embodiment
The preferred embodiment of the present invention is described in more detail below.Although the following describe preferred implementations of the invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without that should be limited by the embodiments set forth herein.It is real
It applies and particular technique or condition person is not specified in example, according to the literature in the art described technology or conditions or according to product
Specification carries out.Reagents or instruments used without specified manufacturer, being can be with conventional products that are commercially available.Under
In the embodiment in face, such as it is not known and illustrates, " % " refers both to weight percent.
Embodiment 1
Biological safe type formaldehyde scavenger is prepared, steps are as follows:
Step 1: the strain of 0.3% gross weight being added into bean curd, strain is by mucor and bacillus subtilis according to quality
2:1 is mixed, and fermentation (covers one layer of clean gauze on surface when semiclosed condition is fermentation under the conditions of culturing room is semiclosed
Or the coverings such as straw), the temperature of fermentation is 25-28 DEG C, relative humidity 80%, and the time of fermentation is 3-5 days, is made in bean curd
Rumen protein fermentation enzymatic hydrolysis is polypeptide and amino acid, obtains protein zymolyte；
Step 2: the distilled water of gross weight 15% being added into the protein zymolyte that step 1 obtains, in air-proof condition after stirring
Under continue to ferment, the temperature of fermentation is 25-28 DEG C, and the time of fermentation is 2 days, periodically opens during fermentation exhaust gas is discharged, obtains
To chyle shape product；
Step 3: chyle shape product made from step 2 being spray-dried, biological safe type formaldehyde scavenger is obtained.It produces
Product are graininess, are saved convenient for encapsulation.
Embodiment 2
Biological safe type formaldehyde scavenger is prepared, steps are as follows:
Step 1: the strain of 0.4 gross weight % being added in the bean cotyledon ripe to boiling, strain is by mucor and bacillus subtilis
It is mixed according to quality 2:1, fermentation (covers one layer on surface when semiclosed condition is fermentation under the conditions of culturing room is semiclosed
The clean coverings such as gauze or straw), the temperature of fermentation is 25-28 DEG C, relative humidity 75%, and the time of fermentation is 4 days, makes egg
White matter fermentation enzymatic hydrolysis is polypeptide and amino acid, obtains protein zymolyte；
Step 2: the distilled water of gross weight 20% being added into the protein zymolyte that step 1 obtains, in air-proof condition after stirring
Under continue to ferment, the temperature of fermentation is 25-28 DEG C, and the time of fermentation is 2 days, periodically opens during fermentation exhaust gas is discharged, obtains
To chyle shape product；
Step 3: chyle shape product made from step 2 being spray-dried, biological safe type formaldehyde scavenger is obtained.It produces
Product are graininess, are saved convenient for encapsulation.
Embodiment 3
Biological safe type formaldehyde scavenger is prepared, steps are as follows:
Step 1: the strain of 0.2 gross weight % being added into dregs of beans, strain is by mucor and bacillus subtilis according to quality
2:1 is mixed, and fermentation (covers one layer of clean gauze on surface when semiclosed condition is fermentation under the conditions of culturing room is semiclosed
Or the coverings such as straw), the temperature of fermentation is 25-28 DEG C, relative humidity 70%, and the time of fermentation is 5 days, makes Rumen protein fermentation
Enzymatic hydrolysis is polypeptide and amino acid, obtains protein zymolyte；
Step 2: the distilled water of gross weight 10% being added into the protein zymolyte that step 1 obtains, in air-proof condition after stirring
Under continue to ferment, the temperature of fermentation is 25-28 DEG C, and the time of fermentation is 2 days, periodically opens during fermentation exhaust gas is discharged, obtains
To chyle shape product；
Step 3: chyle shape product made from step 2 being spray-dried, biological safe type formaldehyde scavenger is obtained.It produces
Product are graininess, are saved convenient for encapsulation.
Embodiment 4
Biological safe type formaldehyde scavenger is prepared, steps are as follows:
Step 1: be added the strain of 0.25 gross weight % into bean curd, strain by mucor, bacillus subtilis, rhizopus,
Micrococcus luteus is mixed according to quality 2:1:1:1, and fermentation is (when semiclosed condition is fermentation under the conditions of culturing room is semiclosed
One layer of clean covering such as gauze or straw are covered on surface), the temperature of fermentation is 25-28 DEG C, relative humidity 73%, fermentation
Time is 3 days, and digesting the Rumen protein fermentation in bean curd is polypeptide and amino acid, obtains protein zymolyte；
Step 2: the distilled water of gross weight 17% being added into the protein zymolyte that step 1 obtains, in air-proof condition after stirring
Under continue to ferment, the temperature of fermentation is 25-28 DEG C, and the time of fermentation is 1 day, periodically opens during fermentation exhaust gas is discharged, obtains
To chyle shape product；
Step 3: chyle shape product made from step 2 being spray-dried, biological safe type formaldehyde scavenger is obtained.It produces
Product are graininess, are saved convenient for encapsulation.
Embodiment 5
Example 1 prepare biological safe type formaldehyde scavenger, with distilled water configuration 5%, 10% and 20% 3 kind not
Protein zymolyte solution example with concentration makees adsorbent, respectively loaded in 100ml spray bottle；Take 3 volume 50L closing PET
Bucket is used as formaldehyde reaction vessel, and few drops of formalins are instilled into bucket and are adjusted to presetting concentration of formaldehyde, and use formaldehyde determination
Instrument detects initial concentration of formaldehyde.It is sealed at once after uniformly spraying each 5ml of various concentration sample into reaction vessel at room temperature,
With the concentration of formaldehyde in formaldehyde tester measurement reaction vessel after 10min, compare removal efficiency.
Analysis data obtain when concentration be 20% when adsorbent for formaldehyde dispel efficiency be it is highest, reach
42.9%；10% concentration samples are 40.9%, and the rate of dispelling of 5% concentration samples is 34.9%；It is heavy into reactor when continuing
After multiple above-mentioned experiment 1 time, concentration of formaldehyde has dropped 70-85% in reactor, is repeated 2 times formaldehyde in post-reactor and is adsorbed substantially
Completely.Mixed economy considers, when as spraying treatment, with 10% concentration than convenient.
The sample water mist that the experiment generating process that spray-on process adsorbent dispels formaldehyde is mainly sprayed by watering can is in whereabouts
In the process, the free amine group ion with the formaldehyde molecule in air of protein zymolyte molecular end, which contact, occurs spontaneous association reaction
To achieve the effect that dispel formaldehyde.It is influenced during this by contact area and time of contact.When absorbent concentration is matched
It, can be with the aitiogenic amido ion phase of formaldehyde since the ratio of protein zymolyte in adsorbent is lower when being set to 5%
To less, therefore the efficiency of dispelling within certain reaction time for formaldehyde is relatively low.And be configured to 20% absorption
Agent, because the amido ion concentration that can be reacted with formaldehyde in air molecule is higher, therefore adsorption efficiency is higher.But by institute in drop
The sample ratio contained is also higher, causes drop mass higher compared to the quality of remaining two kinds of solution, therefore its decrease speed
Than very fast, when a large amount of samples being caused to fail to react completely with formaldehyde in air molecule, drop has been precipitated, therefore leads to the reaction time
It is too short, it can not play and maximum dispel efficiency.Therefore comprehensively consider, spray concentration 10% is than convenient.Intermittence repeats to send forth
Better effect.
Embodiment 6
Biological safe type formaldehyde scavenger prepared by Example 1,5 parts of sample solution of 10% concentration of configuration, setting 17
DEG C, the reaction vessels of 27 DEG C, 34 DEG C, 45 DEG C, 53 DEG C five different temperatures, be respectively dropped into few drops of formalins and adjust bucket to perseverance
Determine concentration of formaldehyde, measures initial concentration of formaldehyde with air quality detector.The sample adsorbent of equivalent is sprayed into, is distinguished after 30min
Measure the removal efficiency of sample adsorbent PARA FORMALDEHYDE PRILLS(91,95) at different temperatures.
The result shows that under the conditions of 17 DEG C, 27 DEG C, 34 DEG C, 45 DEG C, 53 DEG C, formaldehyde removing efficiency is respectively as follows: 49.30%,
54.80%, 58.60%, 59.30%, 59.80%.After temperature is more than 34 DEG C, then temperature is promoted for formaldehyde removing efficiency
Promotion is not just very obvious.After being repeatedly sprayed once to 27-34 DEG C of reactor, decreasing concentration is big under concentration of formaldehyde in reactor
In 95%.Comprehensively consider, when environment temperature is between 20 DEG C~35 DEG C, products of the present invention can play sample suction well
The attached dose of efficiency for dispelling formaldehyde.
Embodiment 7
Above-described embodiment 5,6 is all made of spraying formaldehyde adsorption, and the present embodiment takes aeration adsorbent equipment to replace spray-on process.
Adsorbent equipment is connected through sebific duct with tail gas absorption bag and is formed by air pump, the 1L reaction vessel of the 1L/min speed of evacuation, and air pump is set
Gas in bucket, after reacting with the sample solution in reaction vessel, tail gas are extracted in the plastic barrel for getting concentration of formaldehyde ready
It is emitted into tail gas absorption bag.
Biological safe type formaldehyde scavenger prepared by Example 1, the sample solution that compound concentration is 10%, measures albumen
The pH value of zymolyte stoste is 5.67 or so.Sample pH is adjusted as 6.0,7.0,8.0,9.0,10.0 5 kind of solution 200ml dress
Enter in reactor, then take 200mL do not adjusted pH value protein zymolyte solution and adjustment pH value after five kinds of solution take dress
It sets absorption method and compares research.
The result shows that after protein zymolyte solution 30min when 6.0,7.0,8.0,9.0,10.0 pH PARA FORMALDEHYDE PRILLS(91,95) suction
Attached efficiency is respectively 94.34%, 95.13%, 95.00%, 95.70%, 95.12%, and the adsorption efficiency of stoste PARA FORMALDEHYDE PRILLS(91,95) is
93.23%.
It is more in free state, the quantity of free amino that alkaline condition, which is conducive to make the amido in protein zymolyte solution,
More, formaldehyde removing efficiency is higher.With the absorption of protein zymolyte PARA FORMALDEHYDE PRILLS(91,95), the pH of reaction solution can be gradually reduced, and influence to inhale
Attached effect.Comprehensively consider practicability and the safety of product, preferable ph of the present invention is optimal pH between 8.0~9.0.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of preparation method of biological safe type formaldehyde scavenger, comprising the following steps:
Step 1: to soybean processing at cooked middle addition strain, ferment under the conditions of semiclosed, make the protein in soybean
Fermentation enzymatic hydrolysis is polypeptide and amino acid, obtains protein zymolyte；
Step 2: distilled water being added into the protein zymolyte that step 1 obtains, continues to ferment under air-proof condition after stirring, obtain
Chyle shape product；
Step 3: chyle shape product made from step 2 being spray-dried, biological safe type formaldehyde scavenger is obtained.
2. the preparation method of biological safe type formaldehyde scavenger according to claim 1, it is characterised in that: in the step 1
The cooked bean cotyledon or dregs of beans at least one of ripe for bean curd, boiling.
3. the preparation method of biological safe type formaldehyde scavenger according to claim 1, it is characterised in that: in the step 1
Strain is at least one of mucor, bacillus subtilis, rhizopus, micrococcus luteus, and the temperature of fermentation is 25-28 DEG C, phase
It is 70%-80% to humidity, the time of fermentation is 3-5 days.
4. the preparation method of biological safe type formaldehyde scavenger according to claim 3, it is characterised in that: in the step 1
Strain is that mucor and bacillus subtilis mix according to mass ratio 2:1, and the dosage of strain accounts for the 0.2- of cooked gross weight
0.4%.
5. the preparation method of biological safe type formaldehyde scavenger according to claim 1, it is characterised in that: in the step 2
The dosage of distilled water accounts for the 10-20% of gross weight, to guarantee that smoothly stirring is semi-fluid, to form the production of chyle shape convenient for sufficiently fermenting
Object.
6. the preparation method of biological safe type formaldehyde scavenger according to claim 5, it is characterised in that: in the step 2
The temperature of fermentation is 25-28 DEG C, and the time of fermentation is 1-2 days, is periodically opened during fermentation exhaust gas is discharged.
7. with the preparation method of biological safe type formaldehyde scavenger described in any one of claim 1-6, the life being prepared
The safety-type formaldehyde scavenger of object.
8. the biological safe type formaldehyde scavenger is added the purposes of biological safe type formaldehyde scavenger described in claim 7
Distilled water is diluted to the solution that mass concentration is 1%-10%, after adjusting pH value of solution to alkalescent, with removing formaldehyde at room temperature.
9. the purposes of biological safe type formaldehyde scavenger according to claim 8, it is characterised in that: adjustment pH value of solution to 6.0-
10.0, preferably 8.0-9.0.
10. the purposes of biological safe type formaldehyde scavenger according to claim 8 or claim 9, it is characterised in that: the bio-safety
Type formaldehyde scavenger is perhaps filled in aerator or is applied to surface containing formaldehyde materials, absorption and envelope with spray pattern
Close formaldehyde.
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| CN110433650A (en) * | 2019-08-12 | 2019-11-12 | 福州四纪达生物医学科技有限公司 | The scavenger reagent box and its sweep-out method of formaldehyde in air |
| CN110441529A (en) * | 2019-08-12 | 2019-11-12 | 福州四纪达生物医学科技有限公司 | Formaldehyde detection reagent kit and its detection method |
| CN110436601A (en) * | 2019-08-12 | 2019-11-12 | 福州四纪达生物医学科技有限公司 | The scavenger reagent box and its sweep-out method of formaldehyde in waste liquid |
| CN112076604A (en) * | 2020-09-21 | 2020-12-15 | 嘉兴瓦格纳环保科技有限公司 | Deodorizing and aldehyde-removing agent and preparation method thereof |
| CN115055038A (en) * | 2022-06-02 | 2022-09-16 | 广东省科学院生物与医学工程研究所 | Method for preparing degradable air purification material by hydrolyzing waste feather through microbiological method |
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| CN107343561A (en) * | 2017-06-27 | 2017-11-14 | 山东中阳生物科技有限公司 | A kind of method that step fermentation prepares bioactive feed |
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| CN110433650A (en) * | 2019-08-12 | 2019-11-12 | 福州四纪达生物医学科技有限公司 | The scavenger reagent box and its sweep-out method of formaldehyde in air |
| CN110441529A (en) * | 2019-08-12 | 2019-11-12 | 福州四纪达生物医学科技有限公司 | Formaldehyde detection reagent kit and its detection method |
| CN110436601A (en) * | 2019-08-12 | 2019-11-12 | 福州四纪达生物医学科技有限公司 | The scavenger reagent box and its sweep-out method of formaldehyde in waste liquid |
| CN110433650B (en) * | 2019-08-12 | 2021-09-21 | 福州四纪达生物医学科技有限公司 | Scavenging kit and scavenging method for formaldehyde in air |
| CN112076604A (en) * | 2020-09-21 | 2020-12-15 | 嘉兴瓦格纳环保科技有限公司 | Deodorizing and aldehyde-removing agent and preparation method thereof |
| CN115055038A (en) * | 2022-06-02 | 2022-09-16 | 广东省科学院生物与医学工程研究所 | Method for preparing degradable air purification material by hydrolyzing waste feather through microbiological method |
| CN115055038B (en) * | 2022-06-02 | 2023-07-25 | 广东省科学院生物与医学工程研究所 | Method for preparing degradable air purification material by hydrolyzing waste feathers through microbiological method |
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