CN113975703A - Waste incineration fly ash heavy metal chelating agent and preparation method thereof - Google Patents
Waste incineration fly ash heavy metal chelating agent and preparation method thereof Download PDFInfo
- Publication number
- CN113975703A CN113975703A CN202111306670.2A CN202111306670A CN113975703A CN 113975703 A CN113975703 A CN 113975703A CN 202111306670 A CN202111306670 A CN 202111306670A CN 113975703 A CN113975703 A CN 113975703A
- Authority
- CN
- China
- Prior art keywords
- chelating agent
- fly ash
- heavy metal
- waste incineration
- cyclodextrin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002738 chelating agent Substances 0.000 title claims abstract description 62
- 239000010881 fly ash Substances 0.000 title claims abstract description 48
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 47
- 238000004056 waste incineration Methods 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 39
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920000642 polymer Polymers 0.000 claims abstract description 31
- 239000002086 nanomaterial Substances 0.000 claims abstract description 18
- 239000002253 acid Substances 0.000 claims abstract description 10
- 229920000858 Cyclodextrin Polymers 0.000 claims description 27
- 239000001116 FEMA 4028 Substances 0.000 claims description 27
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical group 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 27
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 27
- 229960004853 betadex Drugs 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 25
- 238000000498 ball milling Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 20
- YYROPELSRYBVMQ-UHFFFAOYSA-N 4-toluenesulfonyl chloride Chemical compound CC1=CC=C(S(Cl)(=O)=O)C=C1 YYROPELSRYBVMQ-UHFFFAOYSA-N 0.000 claims description 18
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 9
- 239000002244 precipitate Substances 0.000 claims description 9
- 238000007873 sieving Methods 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 9
- COLNVLDHVKWLRT-QMMMGPOBSA-N L-phenylalanine Chemical compound OC(=O)[C@@H](N)CC1=CC=CC=C1 COLNVLDHVKWLRT-QMMMGPOBSA-N 0.000 claims description 8
- 229960005190 phenylalanine Drugs 0.000 claims description 4
- 229920000729 poly(L-lysine) polymer Polymers 0.000 claims description 4
- 229920002643 polyglutamic acid Polymers 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 2
- 238000000527 sonication Methods 0.000 claims 1
- 230000000536 complexating effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052793 cadmium Inorganic materials 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RKQOSDAEEGPRER-UHFFFAOYSA-L zinc diethyldithiocarbamate Chemical compound [Zn+2].CCN(CC)C([S-])=S.CCN(CC)C([S-])=S RKQOSDAEEGPRER-UHFFFAOYSA-L 0.000 description 2
- NGCCQISMNZBKJJ-UHFFFAOYSA-N 2,6-dichloro-3-methylquinoline Chemical compound ClC1=CC=C2N=C(Cl)C(C)=CC2=C1 NGCCQISMNZBKJJ-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical group NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- HUMLQUKVJARKRN-UHFFFAOYSA-M sodium;n,n-dibutylcarbamodithioate Chemical compound [Na+].CCCCN(C([S-])=S)CCCC HUMLQUKVJARKRN-UHFFFAOYSA-M 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/08—Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state
Abstract
The invention discloses a waste incineration fly ash heavy metal chelating agent which is characterized by comprising the following components in percentage by weight: 30-60% of beta-cyclodextrin-polyacrylamide polymer, 10-40% of polyamino acid and 20-40% of alpha-manganese dioxide nano material. The invention also discloses a preparation method of the chelating agent. The heavy metal chelating agent for the waste incineration fly ash has strong chelating capacity and good stability, and is more suitable for treating the heavy metal in the waste incineration fly ash.
Description
Technical Field
The invention belongs to the technical field of chelating agent preparation, and particularly relates to a waste incineration fly ash heavy metal chelating agent and a preparation method thereof.
Background
Chelating agents, also known as complexing agents, are organic or inorganic compounds that are capable of chelating heavy metal ions to form stable water-soluble complexes, thereby inactivating the heavy metal ions. The chelating agent contains an electron donor which can be coordinated and combined with heavy metal ions in molecules, and has a series of special effects of softening, descaling, rust prevention, stabilization, synergism and the like, so that the chelating agent is widely applied to a plurality of technical fields of water treatment, textile printing and dyeing, papermaking and the like.
The fly ash from the incineration of the household garbage has complex components, and the main pollutants are heavy metals with high leaching toxicity, which have serious harm to the environment. Through detection, the fly ash from the incineration of the household garbage contains heavy metals with higher leaching concentration, such as Pb, Cr, Cd, Cu, Hg, Zn and the like, and is classified as dangerous waste. Therefore, the treatment of fly ash by chelating agent and heavy metal contained in fly ash is one of effective means for reducing environmental pollution caused by fly ash.
At present, the prior art also discloses the document of heavy metal chelating agent for treating the waste incineration fly ash. For example, chinese patent application No. CN108905041A discloses a heavy metal chelating agent for waste incineration fly ash and a preparation process thereof, wherein the chelating agent comprises the following components in percentage by weight: 3-5% of dithio-tetraethylene penta carbamate, 10-15% of polycarboxylic acid water reducing agent, 50-70% of deionized water, 10-20% of high polymer flocculant, 2-10% of hexamethylenetetramine and 3-10% of propylene glycol monomethyl ether acetate. For another example, chinese patent application No. CN106955451A discloses a heavy metal chelating agent for waste incineration fly ash and a preparation method thereof, the heavy metal chelating agent for waste incineration fly ash comprises a compound chelating agent and a sodium hydroxide solution mixed in a weight ratio of 1:2-3, wherein the compound chelating agent comprises the following components in percentage by weight: organic chelating agent: 60 to 90 percent; inorganic chelating agent: 10 to 40 percent; the organic chelating agent is dithio-carbamate, and is selected from one or more of zinc diethyl dithiocarbamate, zinc dimethyl dithiocarbamate, sodium dibutyl dithiocarbamate or sodium dibenzyl dithiocarbamate; the inorganic chelating agent is selected from one or two of sodium sulfide and sodium phosphate. Although the chelating agent in the prior art can remove heavy metals in the waste incineration fly ash to a certain extent, the components contain various compounds, so that secondary pollution is easily caused, and the chelating agent has few complexing centers in unit molecular weight and limited complexing capacity.
Based on the above, a chelating agent having a simple component and a high complexing ability has been desired, and the disadvantages of the conventional chelating agents can be effectively improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a waste incineration fly ash heavy metal chelating agent and a preparation method thereof. The chelating agent has higher complexing efficiency and can effectively remove heavy metals in the waste incineration fly ash.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme.
One aspect of the invention provides a waste incineration fly ash heavy metal chelating agent, which comprises the following components in percentage by weight: 30-60% of beta-cyclodextrin-polyacrylamide polymer, 10-40% of polyamino acid and 20-40% of alpha-manganese dioxide nano material.
Preferably, the beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
Preferably, the number average molecular weight of the polyamino acid is 50000-20000000.
Preferably, the polyamino acid is poly (L-glutamic acid), poly (L-phenylalanine) or poly (L-lysine).
Preferably, the structure of the alpha-type manganese dioxide nano material is amorphous or crystalline.
Preferably, the α -type manganese dioxide nanomaterial includes a rod-shaped, wire-shaped, granular, flake-shaped, and powdered α -type manganese dioxide nanomaterial.
The purpose of the invention and the technical problem to be solved are also realized by adopting the following technical scheme.
In another aspect of the present invention, there is provided a method for preparing a heavy metal chelating agent from waste incineration fly ash, comprising the steps of:
1) weighing beta-cyclodextrin-polyacrylamide polymer, polyamino acid and alpha-type manganese dioxide nano material according to a ratio, adding a certain amount of deionized water, performing ultrasonic dispersion uniformly, filtering, and drying the precipitate at 60-80 ℃ to obtain a mixture I;
2) and adding the obtained mixture I into a ball mill for ball milling, drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Preferably, the ultrasound conditions are: frequency 60-80 KHz, time: 1-3 h.
Preferably, the ball milling is performed by a wet ball milling method, and the ball milling is performed for 12-24 hours by using absolute ethyl alcohol as a solvent and using high-purity zirconia balls as a grinding medium.
By the technical scheme, the invention at least has the following advantages: the chelating agent of the invention abandons the traditional organic chelating agent and inorganic chelating agent, and takes high molecular substance as the chelating agent, on one hand, the chelating agent can overcome the defect of limited complexing ability of the traditional low molecular chelating agent, and on the other hand, the high molecular substance has stable structure, is not easy to degrade and has little harm to the environment. The chelating agent disclosed by the invention is excellent in complexing ability and capable of effectively removing heavy metals in the waste incineration fly ash.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The waste incineration fly ash heavy metal chelating agent in the embodiment is prepared by the following method:
1) adding 45 parts of beta-cyclodextrin-polyacrylamide polymer, 25 parts of poly (L-phenylalanine) (with the number average molecular weight of 50000-20000000) and 30 parts of powdery alpha-type manganese dioxide nano material into 200 parts of deionized water, then carrying out ultrasonic dispersion for 2 hours at 70KHz until the mixture is uniform, then filtering, and drying the precipitate at 70 ℃ to obtain a mixture I. The beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
2) And adding the obtained mixture I into a ball mill for ball milling for 18 hours by adopting a wet ball milling method and taking absolute ethyl alcohol as a solvent and high-purity zirconia balls as a grinding medium, and drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Example 2
The waste incineration fly ash heavy metal chelating agent in the embodiment is prepared by the following method:
1) adding 60 parts of beta-cyclodextrin-polyacrylamide polymer, 10 parts of poly (L-lysine) (with the number average molecular weight of 50000-20000000) and 30 parts of granular alpha-type manganese dioxide nano material into 200 parts of deionized water, then carrying out ultrasonic dispersion for 2 hours at 70KHz until the mixture is uniform, then filtering, and drying the precipitate at 70 ℃ to obtain a mixture I. The beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
2) And adding the obtained mixture I into a ball mill for ball milling for 18 hours by adopting a wet ball milling method and taking absolute ethyl alcohol as a solvent and high-purity zirconia balls as a grinding medium, and drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Example 3
The waste incineration fly ash heavy metal chelating agent in the embodiment is prepared by the following method:
1) adding 30 parts of beta-cyclodextrin-polyacrylamide polymer, 40 parts of poly (L-phenylalanine) (with the number average molecular weight of 50000-20000000) and 30 parts of granular alpha-type manganese dioxide nano material into 200 parts of deionized water, then carrying out ultrasonic dispersion for 3 hours at 70KHz until the mixture is uniform, then filtering, and drying the precipitate at 70 ℃ to obtain a mixture I. The beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
2) And adding the obtained mixture I into a ball mill for ball milling for 18 hours by adopting a wet ball milling method and taking absolute ethyl alcohol as a solvent and high-purity zirconia balls as a grinding medium, and drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Example 4
The waste incineration fly ash heavy metal chelating agent in the embodiment is prepared by the following method:
1) adding 40 parts of beta-cyclodextrin-polyacrylamide polymer, 40 parts of poly (L-glutamic acid) (the number average molecular weight is 50000-20000000) and 20 parts of granular alpha-type manganese dioxide nano material into 200 parts of deionized water, then carrying out ultrasonic dispersion for 2 hours at 70KHz until the mixture is uniform, then filtering, and drying the precipitate at 80 ℃ to obtain a mixture I. The beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
2) And (3) adding the obtained mixture I into a ball mill for ball milling for 12 hours by adopting a wet ball milling method and taking absolute ethyl alcohol as a solvent and high-purity zirconia balls as a grinding medium, and drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Example 5
The waste incineration fly ash heavy metal chelating agent in the embodiment is prepared by the following method:
1) adding 50 parts of beta-cyclodextrin-polyacrylamide polymer, 10 parts of poly (L-lysine) (with the number average molecular weight of 50000-20000000) and 40 parts of powdery alpha-type manganese dioxide nano material into 200 parts of deionized water, then carrying out ultrasonic dispersion for 1 hour at 70KHz until the mixture is uniform, then filtering, and drying the precipitate at 60 ℃ to obtain a mixture I. The beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
2) And adding the obtained mixture I into a ball mill for ball milling for 20 hours by adopting a wet ball milling method and taking absolute ethyl alcohol as a solvent and high-purity zirconia balls as a grinding medium, and drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Example 6
The waste incineration fly ash heavy metal chelating agent in the embodiment is prepared by the following method:
1) adding 30 parts of beta-cyclodextrin-polyacrylamide polymer, 30 parts of poly (L-glutamic acid) (the number average molecular weight is 50000-20000000) and 40 parts of powdery alpha-type manganese dioxide nano material into 200 parts of deionized water, then carrying out ultrasonic dispersion for 2 hours at 70KHz until the mixture is uniform, then filtering, and drying the precipitate at 60 ℃ to obtain a mixture I. The beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
2) And adding the obtained mixture I into a ball mill for ball milling for 22 hours by adopting a wet ball milling method and taking absolute ethyl alcohol as a solvent and high-purity zirconia balls as a grinding medium, and drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Comparative example 1
The waste incineration fly ash heavy metal chelating agent in the embodiment is prepared by the following method:
1) adding 45 parts of beta-cyclodextrin-polyacrylamide polymer, 25 parts of zinc diethyldithiocarbamate and 30 parts of powdery alpha-type manganese dioxide nano material into 200 parts of deionized water, performing ultrasonic dispersion for 2 hours at 70KHz until the mixture is uniform, filtering, and drying the precipitate at 70 ℃ to obtain a mixture I. The beta-cyclodextrin-polyacrylamide polymer is prepared by reacting beta-cyclodextrin with tosyl chloride to obtain beta-cyclodextrin sulfonate, and reacting the beta-cyclodextrin sulfonate with polyacrylamide to obtain the beta-cyclodextrin-polyacrylamide polymer.
2) And adding the obtained mixture I into a ball mill for ball milling for 18 hours by adopting a wet ball milling method and taking absolute ethyl alcohol as a solvent and high-purity zirconia balls as a grinding medium, and drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
Application example 1
1. And (3) heavy metal content detection: 1.0g of the fly ash from waste incineration provided in examples 1 to 6 of the present application and comparative example 1 was added to 100g of fly ash, and after mixing and stirring them uniformly, the contents of mercury, lead, cadmium, arsenic and hexavalent chromium were measured immediately by the test methods shown in Table 1, and the test results are shown in Table 2.
TABLE 8 test methods for respective Metal contents
| Metal | Test method |
| Mercury | HJ 702-2014 |
| Lead (II) | HJ 781-2016 |
| Cadmium (Cd) | HJ 781-2016 |
| Arsenic (As) | GB 5085.3-2007 appendix E |
| Hexavalent chromium | GB/T 15555.4-1995 |
Table 2 heavy metal content test results
As can be seen from the results in Table 2, the chelating effects of the chelating agents of examples 1 to 5 of the present invention are remarkably increased as compared with those of comparative example 1.
2. And (3) testing the stability in a natural environment: 1.0g of the fly ash from waste incineration provided in examples 1 to 5 of the present application and comparative example 1 was added to 100g of fly ash, mixed and stirred uniformly, and then left for 1 year in an environment of 25 ℃ and a relative humidity of 60%, and then the contents of mercury, lead, cadmium, arsenic and hexavalent chromium were measured by the test methods shown in table 1, and the test results are shown in table 3.
TABLE 3 stability test results in natural environment
As can be seen from the results in Table 3, the chelating agents of examples 1 to 5 of the present invention are significantly more stable than those of comparative example 1.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The heavy metal chelating agent for the waste incineration fly ash is characterized by comprising the following components in percentage by weight: 30-60% of beta-cyclodextrin-polyacrylamide polymer, 10-40% of polyamino acid and 20-40% of alpha-manganese dioxide nano material.
2. The waste incineration fly ash heavy metal chelating agent of claim 1, wherein the β -cyclodextrin-polyacrylamide polymer is β -cyclodextrin sulfonate obtained by reacting β -cyclodextrin with tosyl chloride, and β -cyclodextrin sulfonate is further reacted with polyacrylamide to obtain β -cyclodextrin-polyacrylamide polymer.
3. The waste incineration fly ash heavy metal chelating agent according to claim 1, wherein the polyamino acid has a number average molecular weight of 50000 to 20000000.
4. The waste incineration fly ash heavy metal chelating agent of claim 1, wherein the polyamino acid is poly (L-glutamic acid), poly (L-phenylalanine) or poly (L-lysine).
5. The waste incineration fly ash heavy metal chelating agent of claim 1, wherein the structure of the alpha-type manganese dioxide nanomaterial is amorphous or crystalline.
6. The waste incineration fly ash heavy metal chelating agent of claim 5, wherein the alpha-type manganese dioxide nanomaterial comprises a rod-like, wire-like, granular, flake-like, and powdery alpha-type manganese dioxide nanomaterial.
7. A method for preparing the waste incineration fly ash heavy metal chelating agent as described in claim 1, wherein the method comprises the following steps:
1) weighing beta-cyclodextrin-polyacrylamide polymer, polyamino acid and alpha-type manganese dioxide nano material according to a ratio, adding a certain amount of deionized water, performing ultrasonic dispersion uniformly, filtering, and drying the precipitate at 60-80 ℃ to obtain a mixture I;
2) and adding the obtained mixture I into a ball mill for ball milling, drying and sieving to obtain the waste incineration fly ash heavy metal chelating agent.
8. The method of claim 7, wherein the sonication conditions are: frequency 60-80 KHz, time: 1-3 h.
9. The preparation method of claim 7, wherein the ball milling is performed by a wet ball milling method under the conditions that absolute ethyl alcohol is used as a solvent, high-purity zirconia balls are used as a grinding medium, and the ball milling is performed for 12-24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111306670.2A CN113975703A (en) | 2021-11-05 | 2021-11-05 | Waste incineration fly ash heavy metal chelating agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111306670.2A CN113975703A (en) | 2021-11-05 | 2021-11-05 | Waste incineration fly ash heavy metal chelating agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113975703A true CN113975703A (en) | 2022-01-28 |
Family
ID=79746799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111306670.2A Pending CN113975703A (en) | 2021-11-05 | 2021-11-05 | Waste incineration fly ash heavy metal chelating agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113975703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956430A (en) * | 2022-06-23 | 2022-08-30 | 嘉兴学院 | Landfill leachate membrane concentrated solution treatment process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10180224A (en) * | 1996-12-27 | 1998-07-07 | Nissan Chem Ind Ltd | Agent for immobilizing heavy metal in waste incineration fly ash and method for making the fly ash harmless |
| CN102100643A (en) * | 2009-12-22 | 2011-06-22 | 欧莱雅 | Agent for colouring and/or bleaching keratinous fibres in two parts including a fatty body and a sequestering agent |
| CN105664417A (en) * | 2016-01-04 | 2016-06-15 | 扬州市海诚生物技术有限公司 | Heavy metal chelating agent |
| CN105964652A (en) * | 2016-05-10 | 2016-09-28 | 苏州大学 | Curing and stabilizing treatment method for garbage incineration fly ash |
| WO2018133046A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市能源环保有限公司 | Waste incineration fly ash deacidifying and chelating agent and preparation method therefor |
| CN108841388A (en) * | 2018-07-05 | 2018-11-20 | 北京泷涛环境修复有限公司 | It is a kind of for the medicament of cobalt pollution soil remediation, preparation method and restorative procedure |
| CN109053912A (en) * | 2018-08-09 | 2018-12-21 | 山东东特环保科技有限公司 | A kind of preparation method of chelating agent and its application in heavy metal pollution medium |
| CN112174492A (en) * | 2020-09-30 | 2021-01-05 | 神美科技有限公司 | Composite sludge conditioner |
-
2021
- 2021-11-05 CN CN202111306670.2A patent/CN113975703A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10180224A (en) * | 1996-12-27 | 1998-07-07 | Nissan Chem Ind Ltd | Agent for immobilizing heavy metal in waste incineration fly ash and method for making the fly ash harmless |
| CN102100643A (en) * | 2009-12-22 | 2011-06-22 | 欧莱雅 | Agent for colouring and/or bleaching keratinous fibres in two parts including a fatty body and a sequestering agent |
| CN105664417A (en) * | 2016-01-04 | 2016-06-15 | 扬州市海诚生物技术有限公司 | Heavy metal chelating agent |
| CN105964652A (en) * | 2016-05-10 | 2016-09-28 | 苏州大学 | Curing and stabilizing treatment method for garbage incineration fly ash |
| WO2018133046A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市能源环保有限公司 | Waste incineration fly ash deacidifying and chelating agent and preparation method therefor |
| CN108841388A (en) * | 2018-07-05 | 2018-11-20 | 北京泷涛环境修复有限公司 | It is a kind of for the medicament of cobalt pollution soil remediation, preparation method and restorative procedure |
| CN109053912A (en) * | 2018-08-09 | 2018-12-21 | 山东东特环保科技有限公司 | A kind of preparation method of chelating agent and its application in heavy metal pollution medium |
| CN112174492A (en) * | 2020-09-30 | 2021-01-05 | 神美科技有限公司 | Composite sludge conditioner |
Non-Patent Citations (1)
| Title |
|---|
| 温宗国等: "《城市循环经济发展：系统方法、共性技术与应用实践》", 31 October 2015, 中国环境出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956430A (en) * | 2022-06-23 | 2022-08-30 | 嘉兴学院 | Landfill leachate membrane concentrated solution treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101947381B (en) | heavy metal treating agent and heavy metal pollutants treating method | |
| CN102784452B (en) | A kind of heavy metal stabilizer for removal heavy metal pollution and using method thereof | |
| CN104399730B (en) | A kind of Compound Heavy Metals stabilizer, preparation method and using method thereof containing carbodithioic acid functionalization star-like super-branched polymer | |
| WO2004013219A1 (en) | A heavy maetal chelate composition containing chitosan derivatives and uses thereof | |
| CN110218337B (en) | Water-soluble lignin chelating agent and preparation method and application thereof | |
| CN103663663A (en) | Efficient composite heavy metal chelating agent | |
| NO128910B (en) | ||
| CN111228712B (en) | Heavy metal stabilizing chelating agent, aqueous solution thereof and preparation methods thereof | |
| EP0895521A1 (en) | Process for producing finely divided, water-insoluble aziridine polymers | |
| CN113975703A (en) | Waste incineration fly ash heavy metal chelating agent and preparation method thereof | |
| CN114735795B (en) | Sodium alginate-diatomite composite magnetic flocculant and preparation method thereof | |
| WO2022104761A1 (en) | Composite wastewater treatment agent | |
| US5387365A (en) | Metal scavengers for treating waste water | |
| CN108529766A (en) | A kind of coating sewage-treating agent and preparation method thereof | |
| CN116239172A (en) | Water treatment agent mixture and application thereof in water system stability control | |
| CN105149003B (en) | A kind of preparation method and application of chitosan duplex metal complexes catalyst | |
| CN115572011A (en) | Paint wastewater treatment agent composition and paint wastewater treatment method | |
| CN108557916A (en) | A kind of high efficiency sewage treating agent and preparation method thereof | |
| CN1197906C (en) | Heavy metal chelator compound containing chitosan derivative | |
| CN112138528A (en) | Deodorant and preparation method thereof | |
| JP2020203270A (en) | Treatment agent of drainage water | |
| CN112439396A (en) | Hydroxyethylidene diphosphonic acid/hydroxyapatite organic-inorganic hybrid composite material and preparation method thereof | |
| CN101898824A (en) | Sulfide heavy metal chelating trapping agent and preparation method thereof | |
| CN106179259B (en) | A kind of PM2.5 agent for capturing and preparation method thereof | |
| CN108034973B (en) | Direct electroplating hole metallization solution for printed circuit board and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220128 |