CN109321206A - A kind of degradable dust suppressant of suppression control Urban Public Space airborne suspended particulate - Google Patents

A kind of degradable dust suppressant of suppression control Urban Public Space airborne suspended particulate Download PDF

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Publication number
CN109321206A
CN109321206A CN201811328829.9A CN201811328829A CN109321206A CN 109321206 A CN109321206 A CN 109321206A CN 201811328829 A CN201811328829 A CN 201811328829A CN 109321206 A CN109321206 A CN 109321206A
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China
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dust suppressant
salt
dust
degradable dust
degradable
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CN201811328829.9A
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Inventor
凌沛学
刘飞
张兰英
陈勉
陈磊
孙康
张晓元
郝荣华
袁超
张天娇
张秀华
张林军
袁丹丹
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Shandong Freda Medical Group Co ltd
INSTITUTE OF BIOPHARMACEUTICALS OF SHANDONG PROVINCE
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Shandong Freda Medical Group Co ltd
INSTITUTE OF BIOPHARMACEUTICALS OF SHANDONG PROVINCE
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Priority to CN201811328829.9A priority Critical patent/CN109321206A/en
Publication of CN109321206A publication Critical patent/CN109321206A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/22Materials not provided for elsewhere for dust-laying or dust-absorbing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

Abstract

The present invention provides a kind of degradable dust suppressants of suppression control Urban Public Space airborne suspended particulate, including natural polymers;The natural polymers are selected from the combination of one of polyglutamic acid, xanthan gum, hyaluronic acid, hyaluronate, chitosan, pulullan polysaccharide, thermal gels and gellan gum or more than one combination or the combination of above-mentioned one or more and polyaminoacid.Degradable dust suppressant of the invention is free of inorganic salts, synthetic surfactant, can contact human body, to greenbelt, to the infrastructure such as the materials such as metal, rubber and building, vehicle corrosion-free, no pollution to the environment safe and harmless to people.

Description

A kind of degradable dust suppressant of suppression control Urban Public Space airborne suspended particulate
Technical field
The invention belongs to environment protection fields, are related to a kind of degradable dust suppression of suppression control Urban Public Space airborne suspended particulate Agent.
Background technique
Particulate matter is important air pollution source, and the suspended particulate substance in air is divided into overall suspended pellet (TSP), can inhale Enter particulate matter (PM10) and fine particle (PM2.5), equivalent diameter distinguishes≤100,10 and 2.5 μm.Bulky grain is mostly in TSP It is deposited on pharynx nasalis, wherein about 80% can enter respiratory tract deep for PM10, PM10 about half PM2.5 is accounted for and sinks in alveolar Product.These suspended particulates can cause the diseases such as respiratory system, form economy, burden on society.Therefore to densely populated city, The air pollution harm that grain object is formed is particularly evident.
Particulate matter can be divided into primary particulate and secondary aerosol species.Primary particulate is by natural pollution source and artificial pollution Source, which is discharged into the atmosphere, directly contributes the particulate matter of pollution.Secondary aerosol species are by contaminating gaseous components (such as two certain in atmosphere Sulfur oxide, nitrogen oxides, hydrocarbon etc.) between or these components and atmosphere in component (such as oxygen, ammonia) between lead to The particulate matter that photochemical oxidation reaction, catalytic oxidation or other chemical reactions are converted into is crossed, such as has titanium dioxide respectively Ammonium sulfate, the ammonium nitrate of sulphur, the oxidation product of nitrogen oxides and ammonia neutralization reaction generation.
Fugitive dust belongs to primary particulate, and proportion constantly increases in urban air overall suspended pellet, Individual areas even up to 50% or more.Fugitive dust refers to dust pollution object without the random row of emission control facility The fugitive dust generated in the case where putting.It is natural that city fugitive dust source generally comprises dust on the roads, earth's surface wind erosion dust, atmosphere Fugitive dust, construction site fugitive dust and industrial discharge fugitive dust are carried and stacked to fugitive dust, material.
The major measure for administering the pollution of city opening fugitive dust has biology, physical method.
Biological method can conserve water and soil by vegetation such as Turf Culture, trees, reduce earth's surface wind erosion dust.But the method Period is long, it is difficult to alleviate dust pollution in a short time.
Physical method can press down control fugitive dust by modes such as covering, watering and injection dust suppressants.Exposed earth's surface can generally be spread If plastic mesh makees covering treatment, but inherently a kind of petrochemical industry pollutant newly introduced of institute's lid plastic mesh.
Watering can moisten rapidly dust source.In recent years there are also atomizing de-dusting technologies, it is to make liquid crushing by various external force The droplet of certain size distribution is formed, and separates grit with gas under the effects of collision, diffusion, agglomerating.B. Raj Mohan etc. has studied partial size and can achieve 96% in the dustfall efficiency of the water mists of 1-5 μ m.But the two is all because moisture evaporates Speed is fast, it is difficult to long sustaining dust-proof effect.
Spraying dust suppressant can have the characteristics that simple and direct efficient by moisturizing and the fixed dust of cohesive action.But suppression at present Dirt product is mainly chemical dust suppressant, there is petrochemical industry high molecular polymer, salt and surfactant etc. and topochemistry Modification such as starch base grafted propylene Barbiturates high power water-absorbing resin, they perhaps can not all degrade or corrode implements, or Person is harmful to human health, and limits such dust suppressant and is only applicable to the heavily contaminateds such as mine, harbour region.CN 201711370080.X a kind of composite environment-friendly dust suppressant contains polyvinyl alcohol, carboxymethyl cellulose and Na2SiO3, polyacrylamide Petrochemical materials is depended on components, the preparations of the dust suppressant such as sodium tripolyphosphates.CN 201810025165.2 is a kind of compound Environment-friendly type Fugitive dust inhibiting agent can form one layer of continuous, complete shell membrane in surface of material after dry, and have certain machinery Intensity and toughness, therefore the dust suppressant is unsuitable for city and sprays and exposed population group.
In recent years it has been reported that new bio base dust suppressant, uses natural moisturizer, adhesive for raw material, protected for pavement of road Wet and construction site dust consolidation, but its to press down prosecutor formula more single, and in component still containing the burn intos irritations such as inorganic salts at Point, it is not suitable for being applied to the intensive city space of crowd activity, and contact human body, limiting can application region, it is difficult to from whole City anti-dust effect is improved on body.As for the new mechanisms clarifier such as such as air filtration, Electrostatic Absorption, then it is only applicable to indoor limited Space, it is difficult to the suspended particulate substance of open space outside efficient process room.
Secondary aerosol species proportion in PM2.5 is different with seasonal variations, and winter accounts for about 30-40%, summer about 60- 70%, it is the major reason that China's PM2.5 index is persistently raised.Coal fire discharged, automotive emission, industrial discharge etc. are made At gaseous contaminations such as sulfur dioxide, nitrogen oxides, primary pollution is formed.And ammonia can then promote primary pollution object to form sulphur The secondary aerosol species such as sour ammonium, ammonium nitrate.Ammonia is mainly derived from fertilizer application discharge (40%), livestock and poultry cultivation discharge (40%).Mesh The preceding gas treatment that discharge is mainly concentrated to industry, and the mode of raising motor vehicle gasoline oil product are depolluted, and for non-collection The urban atmospheres pollution sources means of middleization are limited.
In short, a kind of currently not yet be suitable for the populations dense spaces such as city, it can safe contact human body, greenbelt, soil The dust suppressant of the facilities such as earth, vehicle and building can directly flutter suspended particulate substance in drop air, and can bind safe and environment-friendlyly Surface floating dust is consolidated, the renewable long-acting dust suppressant of gaseous contamination can be also corrected.
Summary of the invention
Aiming at the problem that lacking the dust suppressant for Urban Public Space airborne suspended particulate of environment-friendly degradable at present, The present invention provides a kind of accessible human body, can be applied to Urban Public Space, harmless to humans, free from corrosion to implements, can flutter Drop airborne suspended particulate, and dust can be binded and be stranded in settling surface, reduce reentrainment of dust multimachine system, it is long-acting, can be again Raw, degradable dust suppressant.
To achieve the above object, the present invention adopts the following technical scheme that.
A kind of degradable dust suppressant of suppression control Urban Public Space airborne suspended particulate, including natural polymer polymerization Object;
The natural polymers are selected from polyglutamic acid, xanthan gum, hyaluronic acid, hyaluronate, chitosan, chitosan One of salt, pulullan polysaccharide, thermal gels and gellan gum or more than one combination are above-mentioned one or more kinds of The combination of combination and polyaminoacid.
The polyaminoacid appointing in polyglutamic acid and its salt, polylysine and its salt and poly-aspartate and its salt Meaning is one or more kinds of.
The hyaluronate is preferably at least one of its sylvite, sodium salt, calcium salt, magnesium salts and ammonium salt.The shell is poly- Sugared salt is preferably at least one of its hydrochloride, formates, acetate, citrate, sulfate and nitrate.The poly- paddy Propylhomoserin salt is preferably at least one of its sylvite, sodium salt, calcium salt, magnesium salts and ammonium salt.The polylysine salt is preferably its salt At least one of hydrochlorate, formates, acetate, citrate, sulfate and nitrate.The polyaspartic acid salts are preferably At least one of its sylvite, sodium salt, calcium salt, magnesium salts and ammonium salt.
The molecular weight of the natural polymers is 100 Da-25000 kDa, preferably 500 Da-10000 kDa。
Mass percentage of the natural polymers in degradable dust suppressant is 0.001-100%;Preferably 0.001-1%;More preferable 0.05-0.5%.
The degradable dust suppressant further includes solvent;The solvent can for water, ethyl alcohol, buffer solution, dilute acid soln and It is any one or more than one in dilute alkaline soln;Further, the pH of solvent is 5.0-8.0.Solvent is preferably water or ethyl alcohol Aqueous solution;Further, the mass percentage of ethyl alcohol is 5% or less in the aqueous solution of ethyl alcohol.
Preferably, above-mentioned degradable dust suppressant is made of natural polymers and solvent.
A kind of above-mentioned degradable dust suppressant controls the application of Urban Public Space airborne suspended particulate in suppression.
In above-mentioned application, the aqueous solution containing degradable dust suppressant is sprayed;The mist droplet particle size is 0.5-500 μm;It is preferred that It is 2.5-40 μm.
Dust suppression principle of the invention is as follows:
From such Polymer Solution and particulate matter contact start to particulate matter is left, it presents united multimachine system suppression control particle Object: 1. water mists catch the suspended particulate substance of drop solid space vertical distribution.Inertia, capture, diffusion, the gravity of water mists are made With.2. moisturizing extends the time that particulate matter is in wetting state.Such macromolecule all has good moisture retention, can slow down water Point evaporation rate extends the time for keeping wet to the particulate matter still to suspend, to having settled the aggregated particle object for being bonded in surface It prevents from forming fugitive dust.3. bonding, prevents reentrainment of dust.Such macromolecule dissolves stretching, extension in water phase, penetrates by glutinous particle The recess of object, settling surface, plays the role of anchoring;Between macromolecule and it forms chemistry between particulate matter, settling surface The intermolecular interactions such as key or hydrogen bond, Van der Waals force form cohesive energy pulling force, are formed by curing macromolecule after moisture evaporation The cohesiveness of body and particulate matter, settling surface reduces particulate matter caused by wind erosion and falls off, and reduction rolls the amount of powder to be formed.4. Moisture absorption, absorbs moisture in air, and humidification weight gain prevents from particulate matter from falling off flying upward.Cured macromolecule cohesiveness such as humid air in case of wet Easy to moisture absorption, weight gain, it is difficult to be detached from the surface sticked and fly upward.5. it is water-soluble, it is transferred to sewer after being dissolved in flowing water, particulate matter obtains To enrichment convenient for centralized processing.Cured macromolecule can be dissolved in sprinkling truck, rainwash flowing water, carry particulate matter and turn together Enter sewer.Polymer body can finally be degraded, and particulate matter etc. will be settled into mud, can periodically dredging processing.6. poly- yin from Sub (such as polyglutamic acid, hyaluronic acid, xanthan gum) electronegativity, can be neutralized by polyanionic charge efficient capture such as lead, The particulate matter containing heavy metal ion such as mercury, copper, and ammonia pollution is corrected, it reduces secondary aerosol species and is formed.7. polycation (such as polylysine, chitosan) electropositivity can neutralize efficient capture such as SO by polycationic charge2、NOXDeng primary dirty Object is contaminated, secondary aerosol species is reduced and is formed.
The invention has the following advantages that
Degradable natural polymers have been included total in state food pharmaceuticals administration in dust suppressant of the invention " having used cosmetic material Names Catalogue " (2016.6.30) or GB2760-2014 national food safety standard food of office's publication Product additive is free of inorganic salts, synthetic surfactant using in standard, can contact human body, safe and harmless to people, to green Change band, no pollution to the environment corrosion-free to the infrastructure such as the materials such as metal, rubber and building, vehicle.Day in the present invention Right high molecular polymerization raw material can be produced by microbial fermentation, not depend on petrochemical materials, and can finally be belonged to by natural degradation In reproducible environmentally friendly resource.The present invention is promoted by adjusting polyanion of different nature and polycation ratio The effect of dust suppressant simultaneously has fungistatic effect.The present invention also has flexible environmental suitability, passes through molecular weight, the choosing of concentration It selects, the adjustable dust suppression formula for being suitble to different dirt load dust suppression demands.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, but the present invention is not limited by the following examples.
The preparation of 1 dust suppressant of embodiment
1. solution-type dust suppressant
According to the natural polymers for weighing different molecular weight in table 1-3, ethyl alcohol helps to be uniformly dispersed when necessary plus on a small quantity, And be dissolved in water, it is configured to the solution of corrresponding quality concentration, adjusts whole pH value of solution 5-8 when necessary:
Dust suppressant 4,0.03 g of polyglutamic acid of 4000 kDa of molecular weight is weighed, the stirring of 2 mL ethyl alcohol, which is added, makes dispersion without agglomeration Afterwards, 98 mL of PBS buffer solution that the pH7.4 of 0.01 mM is added while stirring reach be completely dissolved to get;
Dust suppressant 6,0.5 g of pulullan polysaccharide of 200 kDa of molecular weight is weighed, the stirring of 5 mL ethyl alcohol, which is added, makes dispersion without agglomeration Afterwards, be added while stirring about 95 mL water reach be completely dissolved to get;
Dust suppressant 10,0.1 g of chitosan of 800 kDa of molecular weight is weighed, the stirring of 3 mL ethyl alcohol, which is added, to be made after dispersing without agglomeration, About 20 mL water are added while stirring, about 40 μ L hydrochloric acid are added, to dissolving about 50 mL water are added, with hydrochloric acid or hydrogen-oxygen in stirring Change sodium solution adjust pH to 5-7, last moisturizing reach mass percentage concentration 0.1% to get.
The different dust suppression agent prescriptions of table 1
# chitosan needs plus a small amount of dilute HCl solution reaches dissolution, controls final pH 5-7.
The different dust suppression agent prescriptions of table 2
# chitosan needs plus a small amount of dilute HCl solution reaches dissolution, controls final pH 5-7.
2. solid type dust suppressant
According in table 3 weigh different molecular weight natural polymers, and add a small amount of ethanol wet, add water dissolution after and Agglomerating, granule is made after dry in extrusion granulation.According to shown in table plus water is configured to spare after solution, contain chitosan Sample is dissolved with appropriate citrate buffer, finally obtains the aqueous solution of pH 6.2;Other sample final pHs 5.0-8.0.
The different dust suppression agent prescriptions of table 3
2 dust suppressant corrosion test of embodiment
Take respectively representative metal, plastics, stone material, glass etc. be made diameter be about 5 cm, the disk of 0.1 cm of thickness.Different materials It impregnates respectively, same material 3 are immersed in 72 h in 200 mL dust suppression agent solutions, and distilled water flushing is used after taking-up, remove loose Corrosion product is dried or is dried up with cold wind, in impregnating forward and backward title material tablet quality respectively, takes 3 mean value calculations corrosion speed Rate.
Corrosion rate=(quality after quality-immersion before impregnating)/(Area of Sample × test period)
Quality (g) before impregnating;Quality (g) after immersion;Area of Sample (m2);Test period (h)
Referring to the corrosion class of aluminum alloy materials, corrosion rate is in 0.003-0.031 g/m2It is anticorrosion aluminium when h, it is low Corrosion resistance is more preferably when the range.It is impregnated by the dust suppressant of the visible subject material of table 4 tolerance embodiment 1, without obvious rotten Lose phenomenon.
Corrosivity of 4 dust suppressant of table to different materials
* 10 cm of sample disc diameter.
The skin irritatin in vitro test of 3 dust suppressant of embodiment
Select EpiSkinTMHuman skin model kit, operating method preculture, positive by 5%SDS(respectively to specifications Control) and 10 μ L of tested dust suppressant be applied to artificial skin surface, after acting on 15 min, removal tested material continues incubation 42 H detects cell survival rate with mtt assay.Skin Cell activity > 50% shows that tested material is nonirritant compared with the control group, and skin is thin Cytoactive≤50% shows that tested material has irritation.
The skin irritation of 5 dust suppressant of table is tested
The results are shown in Table 5: dust suppressant Skin Cell activity > 50% in embodiment 1 has no obvious skin irritation.
The skin corrosivity experiment in vitro of 4 dust suppressant of embodiment
Select EpiSkinTMHuman skin model kit, operating method preculture, (positive by acetic acid respectively to specifications Control), physiological saline (negative control) and 50 μ L of tested dust suppressant contact 3,60,240 min, with mtt assay detection tested material pair The influence of cell survival rate.The Cell relative activity of negative control is set as 100%, and the OD value and feminine gender that every a sample measures are right Photograph ratio, finds out the Cell relative activity percentage of sample, is determined according to following standard: after tested material acts on 3 min, skin Skin cell activity≤35% is determined as irritation EU R35 class;After tested material acts on 3 min, Skin Cell activity >=35% is made With cell activity < 35% after 60 min, it is determined as irritation R34 class;After tested material acts on 240 min, Skin Cell activity >= 35%, it is determined as no corrosivity.
The skin corrosivity of 6 dust suppressant of table is tested
The results are shown in Table 6: after the dust suppressant in embodiment 1 acts on 240 min, Skin Cell activity >=35% has no obvious Skin corrosivity.
5 dust suppressant of embodiment tests the murder by poisoning of plant
Dust suppressant can evaluate the toxic of plant by seed germination experiment and plant young root growth test.
1. seed germination experiment: selecting seeds company's Commercial wheat seed, proper alignment is in the culture dish for being covered with filter paper (mm of 90 mm × 15), every ware puts 40.Deionized water (control) and dust suppressant or 6 mL of its solution are added in ware, be able to be soaked No filter paper, covers the case culture of preservative film postposition dark culturing, 25 DEG C ± 1 DEG C of temperature, detect percentage of seedgermination after 48 h.As a result Table 7 as it can be seen that in embodiment 1 dust suppressant processing after percentage of seedgermination it is suitable with control group, be compare 95-102%, have no bright It is aobvious that seed is inhibited to sprout toxicity.
Influence of 7 dust suppressant of table to wheat seed germinating rate
2. plant young root growth test: full wheat seed is selected, in 25 DEG C of 3 h of seed soaking, filter paper method (ibid) culture hair Bud.After seed is sprouted, choosing physically well develops neat seed as the test of young root embryotoxicity.By deionized water (control) and dust suppression Agent or 6 mL of its dilution are added in ware, and every 12 h replaces culture solution, measures seedling young root length after 48 h, and taking mean value to be used as should Group length value.As a result table 8 is the 96-111% of control group, has no bright as it can be seen that the young root length of dust suppressant group is suitable with control group It is aobvious to inhibit young root embryotoxicity.
The influence that 8 dust suppressant of table grows wheat seed young root
The dust removing effects of 6 dust suppressant of embodiment
The dust suppression agent solution prepared in embodiment 1 is dusted measure of merit: the spray tower being atomized using two-fluid spray nozzle, spray Dust suppression agent solution water mists are sprayed above mist tower, lower section injection is less than or equal to 100 μm of dust air-flow containing partial size.Water mists are big It is small to be adjusted by adjusting water flow, air flow rate, it is filled respectively in upper and lower spout side by the glass filter material of GS555 MMAD Sampling analysis particle concentration is set, and calculates dust removal efficiency:
Dust removal efficiency=(lower section dust-contained airflow inlet particle concentration-top dust-contained airflow exit particle concentration) × 100%/ Lower section dust-contained airflow inlet particle concentration.
The different dust suppressant spray for dust suppression effects of table 9
The results are shown in Table 9: embodiment dust suppressant is higher than the spray for dust suppression rate of water.The dust removal efficiency of embodiment is in a certain range With water velocity, air velocity rising and improve, application when can pass through water, gas velocity regulate and control dust removal efficiency.
The long-acting fugitive dust inhibitory effect of 7 dust suppressant of embodiment
With filter paper simulated roadway surface, for record without native filter weight, being laid with dust makes dirt load reach 25 g/m2;By 0.066 L/m2Atomization sprays dust suppressant in embodiment 1, standing and drying, and record carries native filter weight;Respectively at the 2nd, 4,8 d blowers from The simulation of air blast downwards wind erosion above filter paper, weighs the weight for carrying native filter paper again, records and calculates dust suppression rate:
Dust amount of the dust suppression rate=spraying securing dust amount × 100% after dust suppressant/before spraying dust suppressant=(after simulation wind erosion Load soil filter weight-filter weight) × 100%/(simulation wind erosion before load soil filter weight-filter weight);
The results are shown in Table 10, under conditions of same dirt load and the amount of spraying, sprays the 2nd day after water dust suppression rate 76.4%, the 8 days 38.7%, dust suppression rate decline 49.35%;And 8 d dust suppression rates of embodiment decline 6.63%-28.27%, it is better than water anti-dust effect, Seem reliable more longlasting, this with its have cohere, moisture absorption, moisture retention it is related.Same urban background dust on the roads discharge with The dust suppression rate for applying dust suppressant is negatively correlated, and if dust suppression rate is minimum after water dust suppression 8 days, streets watering amount is maximum, causes PM10 Discharge intensity highest.And the dust suppression rate of embodiment is higher than water, it is lower than water dust suppressant to discharge intensity by road PM10 after 8 days.Therefore Dust suppressant in embodiment 1 can be used for it is long-term, effectively prevent wind erosion dust.
Table 10 sprays the dust suppression rate of different time after dust suppressant
* compared with the 2nd day dust suppression rate.
The fungistatic effect of 8 dust suppressant of embodiment
Preparing concentration respectively is 106-107The false silk ferment of the test strain Escherichia coli of cfu/mL, staphylococcus aureus, white Female bacteria suspension, and even spread agar plate surface is picked with sterile cotton swab respectively, obtain microbiological contamination plate.Take the straight of sterile drying 5 mm filter paper of diameter, every 20 μ L dust suppressants of dropwise addition;Sample is not added in the positive control scraps of paper;Negative control adds aseptic deionized water It is coated with agar plate.Tested filter paper is affixed on microbiological contamination plate respectively.After 37 DEG C of incubator culture 18-24h, inhibition zone is measured Diameter.As a result as shown in table 11: positive control is without antibacterial ring size, and Negative control Sterile growth, biocidal property dust suppressant is to gram sun Property bacterium (staphylococcus aureus), Gram-negative bacteria (Escherichia coli) and fungi (Candida albicans) there is inhibitory effect.
The fungistatic effect of 11 biocidal property dust suppressant of table
As a result as shown in table 11: positive control is without antibacterial ring size, and Negative control Sterile growth, biocidal property dust suppressant is to Gram-positive Bacterium (staphylococcus aureus), Gram-negative bacteria (Escherichia coli) and fungi (Candida albicans) have inhibitory effect.
Suction-operated of 9 dust suppressant of embodiment to heavy metal
Using the dust suppressant of this programme as solvent, preparation contains Cd2+、Pb2+、Mn2+、Cu2+、Zn2+、Fe3+、Cr3+Ion standard Liquid, each heavy metal molar concentration is 0.4 × 10-4Isometric dehydrated alcohol is added in mol/L, stirs and evenly mixs 5 min, centrifugation 10 Min uses Atomic Absorption Spectrometry content of beary metal after supernatant dilution:
Heavy metal adsorption rate=(0.4 × 10-4- C × n) × 100%/0.4 × 10-4
Wherein, C is heavy metal analysis concentration, and n is extension rate.
Adsorption effect of 12 dust suppressant of table to heavy metal ion
As a result as shown in table 12: dust suppressant has suction-operated to common contents of many kinds of heavy metal ion.
The heat resistance of 10 dust suppressant of embodiment
25 g/m of surface dirt load is set2, dust suppressant atomization 0.066 L/m of the amount of spraying2, surface temperature is simulated with climatic chamber Be arranged 50 DEG C it is dry stand, after the 2nd, 4,8 d air blast simulation wind erosion, calculate dust suppression rate, calculation formula with embodiment 3, As a result as shown in table 13: under same hot conditions, spraying the 2nd day after water dust suppression dust suppression rate 59.6%, the 8th day 33.5%, press down Dirt rate decline 43.79%.And 8 d dust suppression rates of embodiment decline 8.81%-13.73%, it is better than water anti-dust effect.
Dust suppression rate at 50 DEG C of 13 dust suppressant of table
* compared with the 2nd day dust suppression rate.
The encapsulating ability of 11 dust suppressant of embodiment
Dust suppressant in Example 1 in film forming grinding tool, takes out diaphragm, U.S. Brookfield T3 in right amount after natural drying Texture instrument detects tensile strength and elongation at break, by filming performance Indirect evaluation to the encapsulating ability for cohering dust.Knot Fruit is as shown in table 14: compared with water dust suppression, dust suppressant has obvious film forming, can encapsulate the fugitive dust for being bonded in surface, be resistant to Certain drawing force becomes the toughness for maintaining membranous type with type, has preferable applicability to the fugitive dust source jolted, vibrated.
The film forming of 14 dust suppressant of table
The assimilation effect to pollution gas of 12 dust suppressant of embodiment
Take appropriate HNO3And NH3·H2O is separately added into dust suppressant, obtains acid, the alkaline aqueous solution of various concentration, simulates dust suppression Agent in atmosphere with NO2、NH3For the absorption and buffer capacity of the acid, alkaline pollution gas lysate of representative, stood after mixing, PH value of solution is detected after 15 h.As a result as shown in Table 15: compared with water dust suppression, dust suppressant, which has, absorbs the absorption of polluted gas derivative Effect, and there is buffer capacity independently to correct and adjust pH, reduce pollution and corrosion of these polluted gas to environment.
Assimilation effect of 15 dust suppressant of table to main polluted gas derivative
The application of 13 dust suppressant of embodiment
Dust suppressant is injected into the water mists of 0.5-500 μm of partial size (preferably 2.5-40 μm) with facilities such as spraying machine, fog gun vehicles, It is sprayed on the public space place that such as road, square, passenger station (table 16) are densely populated by mobile vehicles such as motor vehicles, is sent out The effects of waving dust suppression.
The citing of 16 dust suppressant application place of table

Claims (10)

1. a kind of degradable dust suppressant of suppression control Urban Public Space airborne suspended particulate, including natural polymers; It is characterized in that, natural polymers are selected from polyglutamic acid, xanthan gum, hyaluronic acid, hyaluronate, chitosan, shell One of glycan salt, pulullan polysaccharide, thermal gels and gellan gum or more than one combination or it is above-mentioned a kind of or it is a kind of with On combination and polyaminoacid combination.
2. degradable dust suppressant according to claim 1, which is characterized in that the polyaminoacid be selected from polyglutamic acid and its It is any one or more than one in salt, polylysine and its salt, polylysine salt and its salt and poly-aspartate and its salt.
3. degradable dust suppressant according to claim 1, which is characterized in that the hyaluronate be preferably its sylvite, At least one of sodium salt, calcium salt, magnesium salts and ammonium salt;The chitosan salt is preferably its hydrochloride, formates, acetate, lemon At least one of lemon hydrochlorate, sulfate and nitrate.
4. degradable dust suppressant according to claim 2, which is characterized in that the polyglutamate be preferably its sylvite, At least one of sodium salt, calcium salt, magnesium salts and ammonium salt;The polylysine salt be preferably its hydrochloride, formates, acetate, At least one of citrate, sulfate and nitrate;The polyaspartic acid salts are preferably its sylvite, sodium salt, calcium salt, magnesium At least one of salt and ammonium salt.
5. degradable dust suppressant according to claim 1, which is characterized in that the molecular weight of the natural polymers For 100 Da-25000 kDa;Its mass percentage in degradable dust suppressant is 0.001-100%.
6. degradable dust suppressant according to claim 1, which is characterized in that the degradable dust suppressant further includes solvent.
7. degradable dust suppressant according to claim 6, which is characterized in that it is molten that the solvent is selected from water, ethyl alcohol, buffering It is any one or more than one in liquid, dilute acid soln and dilute alkaline soln;The preferably aqueous solution of water or ethyl alcohol;Preferably, molten The pH of agent is 5.0-8.0.
8. degradable dust suppressant according to claim 7, which is characterized in that the quality percentage of ethyl alcohol in the aqueous solution of ethyl alcohol Content is 5% or less.
9. degradable dust suppressant according to claim 1, which is characterized in that degradable dust suppressant is polymerize by natural polymer Object and solvent composition.
10. a kind of degradable dust suppressant as described in claim 1-9 is any controls Urban Public Space airborne suspended particle in suppression Application in object.
CN201811328829.9A 2018-11-09 2018-11-09 A kind of degradable dust suppressant of suppression control Urban Public Space airborne suspended particulate Pending CN109321206A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102295915A (en) * 2011-09-20 2011-12-28 北京中盛益世环保科技有限公司 Dust inhibitor
CN103184034A (en) * 2013-01-04 2013-07-03 北京阳光溢彩科技有限公司 Ecological environment-friendly dust inhibitor
CN104910866A (en) * 2015-04-20 2015-09-16 广东工业大学 Novel spraying agent for reducing indoor haze, and application thereof
CN106608986A (en) * 2015-10-20 2017-05-03 李建明 Water-soluble chitosan composition and application thereof
CN106608985A (en) * 2015-10-20 2017-05-03 李建明 Chitosan water-soluble composition and use thereof
CN107502294A (en) * 2017-09-20 2017-12-22 鞍钢集团矿业有限公司 A kind of dedusting antismoke agent for mine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102295915A (en) * 2011-09-20 2011-12-28 北京中盛益世环保科技有限公司 Dust inhibitor
CN103184034A (en) * 2013-01-04 2013-07-03 北京阳光溢彩科技有限公司 Ecological environment-friendly dust inhibitor
CN104910866A (en) * 2015-04-20 2015-09-16 广东工业大学 Novel spraying agent for reducing indoor haze, and application thereof
CN106608986A (en) * 2015-10-20 2017-05-03 李建明 Water-soluble chitosan composition and application thereof
CN106608985A (en) * 2015-10-20 2017-05-03 李建明 Chitosan water-soluble composition and use thereof
CN107502294A (en) * 2017-09-20 2017-12-22 鞍钢集团矿业有限公司 A kind of dedusting antismoke agent for mine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
周彦豪: "《聚合物加工流变学基础》", 31 March 1988, 西安交通大学出版社 *

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