CN112852433B - A kind of polluted site odor control agent and preparation method thereof - Google Patents
A kind of polluted site odor control agent and preparation method thereof Download PDFInfo
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- CN112852433B CN112852433B CN202011616568.8A CN202011616568A CN112852433B CN 112852433 B CN112852433 B CN 112852433B CN 202011616568 A CN202011616568 A CN 202011616568A CN 112852433 B CN112852433 B CN 112852433B
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- control agent
- cyclodextrin
- odor control
- chitosan
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- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 229920001661 Chitosan Polymers 0.000 claims abstract description 20
- 229920000858 Cyclodextrin Polymers 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 11
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 11
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920002678 cellulose Polymers 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 8
- 235000010980 cellulose Nutrition 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 239000001116 FEMA 4028 Substances 0.000 claims description 6
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 6
- 229920000805 Polyaspartic acid Polymers 0.000 claims description 6
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 6
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 6
- 229960004853 betadex Drugs 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 108010064470 polyaspartate Proteins 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- KXJGSNRAQWDDJT-UHFFFAOYSA-N 1-acetyl-5-bromo-2h-indol-3-one Chemical compound BrC1=CC=C2N(C(=O)C)CC(=O)C2=C1 KXJGSNRAQWDDJT-UHFFFAOYSA-N 0.000 claims description 2
- 229920001450 Alpha-Cyclodextrin Polymers 0.000 claims description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 229920002101 Chitin Polymers 0.000 claims description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000001856 Ethyl cellulose Substances 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 2
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 2
- 108010020346 Polyglutamic Acid Proteins 0.000 claims description 2
- HFHDHCJBZVLPGP-RWMJIURBSA-N alpha-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO HFHDHCJBZVLPGP-RWMJIURBSA-N 0.000 claims description 2
- 229940043377 alpha-cyclodextrin Drugs 0.000 claims description 2
- -1 benzyl cyanoethyl Chemical group 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 229920001249 ethyl cellulose Polymers 0.000 claims description 2
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 2
- GDSRMADSINPKSL-HSEONFRVSA-N gamma-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO GDSRMADSINPKSL-HSEONFRVSA-N 0.000 claims description 2
- 229940080345 gamma-cyclodextrin Drugs 0.000 claims description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 229920002643 polyglutamic acid Polymers 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 238000003381 deacetylation reaction Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 19
- 238000005507 spraying Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 3
- 238000006065 biodegradation reaction Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 27
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 6
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 6
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical group [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 230000009323 psychological health Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
- C09K17/18—Prepolymers; Macromolecular compounds
- C09K17/32—Prepolymers; Macromolecular compounds of natural origin, e.g. cellulosic materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/16—Cyclodextrin; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2479/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
本发明公开了一种污染场地异味控制剂及制备方法。所述控制剂的原料包括壳聚糖、环糊精、纤维素醚、聚氨基酸及交联剂。本发明将原料按一定比例分散于水中，加入交联剂反应制得控制剂产品，将其喷洒到污染场地表面，组分沿土壤孔隙下渗并与土壤形成黏结体，从而阻止土壤中的异味物质向大气中挥发。本发明所述制备方法简单，原料易获得，成本低廉，控制污染土壤异味的有效作用时间长，且可生物降解不产生二次污染。使用本发明所述控制剂治理污染场地异味采用喷洒即可，操作方便。The invention discloses a polluted site odor control agent and a preparation method. The raw materials of the control agent include chitosan, cyclodextrin, cellulose ether, polyamino acid and cross-linking agent. In the method, the raw materials are dispersed in water according to a certain proportion, and the cross-linking agent is added to react to obtain a control agent product, which is sprayed on the surface of the polluted site, and the components infiltrate along the soil pores and form a bond with the soil, thereby preventing the odor in the soil Substances volatilize into the atmosphere. The preparation method of the invention is simple, the raw materials are easy to obtain, the cost is low, the effective time for controlling the odor of the polluted soil is long, and the biodegradation does not produce secondary pollution. The control agent of the present invention can be used to control the odor of polluted sites by spraying, and the operation is convenient.
Description
Technical Field
The invention relates to the technical field of pollution site odor treatment and control, in particular to a pollution site odor control agent and a preparation method thereof.
Background
With the needs of rapid urban development and industrial upgrading, industrial sites outside the range of the original city are gradually brought into urban planning, and polluted site soil left by enterprises such as petroleum refining, coking, organic chemical industry, pesticides and the like is rich in benzene series, chlorinated hydrocarbons, sulfur-containing substances, nitrogen-containing substances and other malodorous substances. These malodorous substances are released to the atmosphere continuously, and affect the air quality of the surrounding environment and the physical and psychological health of surrounding residents. The disturbing operation in the polluted site repairing process accelerates the release of the malodorous substances, and further aggravates the odor disturbing pollution to residents. Aiming at the problem of VOCs dissipation pollution in the repair construction process of the organic pollution site, particularly the problem that the odor diffusion is difficult to prevent through large-scale measures in the deep foundation pit excavation operation process, the scientific and effective odor control technology is the best means for cutting off the way of pollutants entering air. At present, the odor control agent is sprayed to effectively control the malodorous substances in the polluted site remediation.
Patent CN103484127A discloses a foam for treating contaminated soil and a treatment method thereof, which has the functions of adsorbing and eliminating pollutants in the soil, but not controlling soil odor. Patent CN111282987A discloses an inhibitor for treating the peculiar smell of polluted soil and a treatment method thereof, and prepares a peculiar smell inhibitor capable of quickly forming a film on the surface of the soil, but the effective control time is short and the spraying method is complex.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a pollution site odor control agent and a preparation method thereof. The control agent for the peculiar smell of the polluted soil has low cost and long effective action time, can be biologically degraded without generating secondary pollution, and the method for treating the peculiar smell of the polluted soil by using the control agent has simple operation and can realize the control of the peculiar smell of the polluted soil without complicated steps.
The technical scheme of the invention is as follows:
a pollution site odor control agent is prepared by reacting chitosan, cyclodextrin, cellulose ether and polyamino acid through a cross-linking agent, and comprises an uncrosslinked penetrating component and a fully crosslinked gel sealing component, and the method comprises the following specific steps:
(1) under the condition of continuous stirring, dispersing chitosan, cyclodextrin, cellulose ether and polyamino acid in water to obtain a mixed solution of chitosan, cyclodextrin, cellulose ether and polyamino acid;
(2) under the condition of continuous stirring, adding a cross-linking agent into the mixed solution in the step (1), heating to 40-80 ℃, and preserving heat for 1-5 hours to partially cross-link partial substances in the mixed solution to form the pollution site peculiar smell control agent.
The chitosan in the step (1) is one or more of chitin N-deacetylated products, acylated chitosan, hydroxylated chitosan and carboxymethyl chitosan, wherein carboxymethyl chitosan is preferred, and the concentration of chitosan in the solution is 0.1-5.0%.
The cyclodextrin in the step (1) is one or more of alpha cyclodextrin, beta cyclodextrin and gamma cyclodextrin, wherein the beta cyclodextrin is preferred, and the concentration of the cyclodextrin in the solution is 0.1-5.0%.
In the step (1), the cellulose ether is one or more of methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose, carboxymethyl hydroxyethyl cellulose and phenyl cellulose and sodium salt, wherein the preferred cellulose is sodium carboxymethyl cellulose, and the concentration of the cellulose ether in the solution is 0.1-5.0%.
In the step (1), the polyamino acid is one or two of polyaspartic acid and polyglutamic acid, wherein the polyaspartic acid is preferred, and the concentration of the polyamino acid in the solution is 0.1-10.0%.
In the step (2), the cross-linking agent is one or two of glutaraldehyde and epichlorohydrin, wherein glutaraldehyde is preferred, and the concentration of the cross-linking agent in the solution is 0.01% -5.0%.
Detailed Description
Example 1
Taking 1.0L of pure water, sequentially adding 50g of carboxymethyl chitosan, 20g of beta-cyclodextrin, 10g of sodium carboxymethyl cellulose and 20g of polyaspartic acid under the condition of continuous stirring, after completely dissolving, adding 60ml of 50% glutaraldehyde solution into the solution, heating to 70 ℃, and carrying out heat preservation reaction for 2 hours to obtain the odor control agent.
The control agent prepared in this example was uniformly sprayed on contaminated soil containing toluene, ethyl acetate, and dimethyl disulfide for sealing control. The contents of toluene, ethyl acetate and dimethyl disulfide in the other part of the soil were the same, but no odor control agent was used. According to detection, the total release flux of toluene, ethyl acetate and dimethyl disulfide is reduced by 92% within 14 days by adopting the odor control agent.
Example 2
Taking 1.0L of pure water, sequentially adding 20g of carboxymethyl chitosan, 10g of beta-cyclodextrin, 10g of sodium carboxymethyl cellulose and 20g of polyaspartic acid under the condition of continuous stirring, after completely dissolving, adding 40ml of 50% glutaraldehyde solution into the solution, heating to 50 ℃, and carrying out heat preservation reaction for 2 hours to obtain the odor control agent.
The control agent prepared in the embodiment is uniformly sprayed on polluted soil containing toluene, ethyl acetate and trichloroethylene for sealing control. The contents of toluene, ethyl acetate and trichloroethylene in the other part of soil are the same, but no odor control agent is used. Through detection, the total release flux of the toluene, the ethyl acetate and the trichloroethylene is reduced by 88 percent within 14 days by adopting the odor control agent.
Example 3
Taking 1.0L of pure water, sequentially adding 30g of carboxymethyl chitosan, 20g of beta-cyclodextrin, 10g of sodium carboxymethyl cellulose and 20g of polyaspartic acid under the condition of continuous stirring, after completely dissolving, adding 70ml of 50% glutaraldehyde solution into the solution, heating to 50 ℃, and carrying out heat preservation reaction for 2 hours to obtain the odor control agent.
The control agent prepared in the embodiment is uniformly sprayed on polluted soil containing toluene, trichloroethylene and dimethyl disulfide for sealing control. The contents of toluene, trichloroethylene and dimethyl disulfide in the other part of the soil are the same, but no odor control agent is used. According to detection, the total release flux of toluene, trichloroethylene and dimethyl disulfide is reduced by 87 percent within 14 days by adopting the odor control agent.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification or replacement made by those skilled in the art within the technical scope of the present invention should be covered within the scope of the present invention as defined by the appended claims.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011616568.8A CN112852433B (en) | 2020-12-30 | 2020-12-30 | A kind of polluted site odor control agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011616568.8A CN112852433B (en) | 2020-12-30 | 2020-12-30 | A kind of polluted site odor control agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112852433A CN112852433A (en) | 2021-05-28 |
| CN112852433B true CN112852433B (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011616568.8A Active CN112852433B (en) | 2020-12-30 | 2020-12-30 | A kind of polluted site odor control agent and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112852433B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974360A (en) * | 2014-03-05 | 2015-10-14 | 赢创工业集团股份有限公司 | Superabsorbent polymers having improved odour control properties and method for the production of same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE452109B (en) * | 1973-01-29 | 1987-11-16 | Pharmacia Ab | SCIENTIFIC CLEANER EXTENDED SARYTOR |
| EP0389015A3 (en) * | 1989-03-20 | 1991-08-28 | The Procter & Gamble Company | Absorbent structures with odor control material |
| DE10210124A1 (en) * | 2002-03-08 | 2003-09-18 | Basf Ag | Polymer mixtures with improved odor control |
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| CN104974360A (en) * | 2014-03-05 | 2015-10-14 | 赢创工业集团股份有限公司 | Superabsorbent polymers having improved odour control properties and method for the production of same |
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