CN117482461A - Fe/Na 2 SO 3 Method for efficiently degrading metallocene powder by mechanical grinding agent - Google Patents

Fe/Na 2 SO 3 Method for efficiently degrading metallocene powder by mechanical grinding agent Download PDF

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Publication number
CN117482461A
CN117482461A CN202311429664.5A CN202311429664A CN117482461A CN 117482461 A CN117482461 A CN 117482461A CN 202311429664 A CN202311429664 A CN 202311429664A CN 117482461 A CN117482461 A CN 117482461A
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powder
metallocene
ball
mechanical grinding
iron powder
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CN202311429664.5A
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Inventor
於建明
章献钊
胡俊
楼子墨
宋卢迪
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/37Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by reduction, e.g. hydrogenation
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/38Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by oxidation; by combustion
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/04Pesticides, e.g. insecticides, herbicides, fungicides or nematocides
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40Inorganic substances
    • A62D2101/47Inorganic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40Inorganic substances
    • A62D2101/49Inorganic substances containing halogen
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2203/00Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
    • A62D2203/02Combined processes involving two or more distinct steps covered by groups A62D3/10 - A62D3/40

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Crushing And Grinding (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

The invention provides Fe/Na 2 SO 3 A method for efficiently degrading metallocene powder by a mechanical grinding agent, which comprises the following steps: iron powder, na 2 SO 3 Adding the powder and the deluxe powder into a planetary ball mill, and ball milling for 40min-100min under the rotating speed of 450rpm-600rpm in an air atmosphere. Fe/Na 2 SO 3 The abrasive combination can reach the degradation rate of over 90 percent for the dimocene powder in 40 minutes and the dechlorination rate of 76 percent for the dimocene powder% or more, the grinding efficiency is of great importance for the industrial treatment of metallocene dispersions.

Description

Fe/Na 2 SO 3 Method for efficiently degrading metallocene powder by mechanical grinding agent
Technical Field
The invention belongs to the technical field of mechanochemical treatment of environmental pollutants, and in particular relates to a novel grinding agent combination Fe/Na 2 SO 3 Mechanical milling degradation for deluxe.
Background
The chlorinated organic compounds refer to chlorine-containing hydrocarbon or aromatic organic compounds which are difficult to degrade, can be used as important industrial raw materials, organic solvents and intermediates, can be widely applied to industries such as chemical industry, medicines, pesticides, leather making and the like, and can seriously pollute the atmosphere, soil, groundwater and surface water due to obvious 'three-induced effect' of a plurality of chlorinated organic pollutants. In addition, because many chlorinated organic contaminants are highly volatile and fat-soluble, and are readily absorbed by skin, mucous membranes, etc., and cause serious damage to animal and even human health, they are classified as preferential contaminants by the U.S. Environmental Protection Agency (EPA).
The ditocene powder is a high-efficiency chlorine-containing pesticide, has special effects on preventing and treating crop damping-off diseases of cotton, tobacco, chilli, tomatoes and the like, and has obvious prevention and treatment effects on tobacco stem rot, cucumber root rot, cotton red rot and the like, but due to stronger biotoxicity, related researches show that after the ditocene powder enters an animal body, 2, 5-dichloro-4-methoxyphenol is detected in urine, exists in free and conjugated forms, enters the plant body, and three metabolites of 2, 5-dichloro-4-methoxyphenol, 2, 5-dichloro hydroquinone and 2, 5-dichloro hydroquinone are detected in plant tissues. Since it is difficult to be completely degraded into non-toxic and harmless products in an organism, it is required to be limited and treated by various methods. In japan, there are strict restrictions on the residue of maoshansan in edible pigs and beef, and there are corresponding restrictions on the content thereof in groundwater.
For the method of the deluxe treatment, less research is available at home and abroad. In the mechanochemical field, fe/Na 2 SO 3 Such abrasive combinations have not been investigated for use.
Disclosure of Invention
The invention aims to provide a novel grinding agent combination Fe/Na 2 SO 3 For mechanical grindingGrinding degraded metallocene powder.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides Fe/Na 2 SO 3 A method for dispersing a mechanical abrasive degraded metallocene, the method comprising: iron powder, na 2 SO 3 Adding the powder and the deluxe powder into a planetary ball mill, and performing ball milling for 40min-100min (preferably 100 min) in an air atmosphere at a rotating speed of 450rpm-600rpm (preferably 600 rpm); the mass of the iron powder is the iron powder and Na 2 SO 3 From 60% to 90% (preferably from 60% to 70%, particularly preferably 66.6%) of the total mass of (a); the iron powder, na 2 SO 3 The mass ratio of the total mass to the dimesna powder is 15-25:1 (preferably 20:1); the ball-milling ball-material ratio is 50-80:1 (preferably 50:1).
Wherein the material in the ball-material ratio is iron powder, na 2 SO 3 And the total mass of the dimesna powder.
Further, the invention especially recommends that the method is: iron powder, na 2 SO 3 Adding the powder and the deluxe powder into a planetary ball mill, and ball milling for 100min at the rotating speed of 600rpm in an air atmosphere; the mass of the iron powder is the iron powder and Na 2 SO 3 66.6% of the total mass of (a); the iron powder, na 2 SO 3 The mass ratio of the total mass to the dimesna powder is 20:1, a step of; the ball-milling ball-material ratio is 50:1.
compared with the prior art, the invention has the beneficial effects that: the invention provides Fe/Na 2 SO 3 Method for efficiently degrading metallocene powder by mechanical grinding agent, and Fe/Na is not found at present 2 SO 3 Research on grinding degradation of metallocene powder in the field of mechanochemistry. Experiments find Fe/Na 2 SO 3 The grinding agent combination can reach the degradation rate of over 90 percent on the deluxe in 40 minutes, and the dechlorination rate of over 76 percent on the deluxe, and the grinding efficiency has important significance on the treatment of the deluxe in industry.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a graph showing the degradation effect of the combination of different oxidants on the dimetalum of example 1;
FIG. 2 is a graph showing the dechlorination effect of the metallocene powder under different combinations of oxidants in example 1;
FIG. 3 shows the degradation effect of the combination of different reducing agents on the dimetalum in example 1;
FIG. 4 shows the dechlorination effect of the metallocene powder in the different combinations of reducing agents of example 1;
FIG. 5 is Fe/Na 2 SO 3 The mass fraction of Fe in the alloy powder is influenced by the dechlorination effect of the metallocene powder;
FIG. 6 is the effect of different ball ratios on the dechlorination effect of the metallocene;
FIG. 7 shows the effect of different material ratios on dechlorination of the metallocene.
Detailed Description
The invention will be further described with reference to the following specific examples, but the scope of the invention is not limited thereto:
in the following examples, experimental procedures for detecting degradation rate and dechlorination rate of difenoconazole:
(1) Degradation rate: weighing 0.05g of ground mixture sample into a 10mL centrifuge tube, adding 10mL of normal hexane to extract the dimetallic powder in the sample, performing ultrasonic treatment for 20min, performing low-frequency oscillation for 10min by a vortex mixer, centrifuging for 1min at 8000rpm in a centrifuge, diluting 10 times by 1mL of supernatant, filtering by a 0.22um membrane, and injecting into a high-efficiency gas chromatograph for detection analysis.
(2) Dechlorination rate: weighing 0.05g of ground mixed sample into a 10mL centrifuge tube, adding 3mL of dilute nitric acid (5%), performing ultrasonic treatment at 60 ℃ for 20min, adding ultrapure water to a constant volume of 10mL, putting the centrifuge tube into a centrifuge, centrifuging at 8000rpm for 1min, taking 1mL of supernatant, diluting to 10 times, and finally filtering by a 0.22um filter membrane, and then injecting into an ion chromatograph for detection analysis.
EXAMPLE 1 degradation dechlorination Effect on Desmoocene powder with different abrasive combinations
Fe/Na 2 SO 3 The combination of the Fe/PDS and the Fe/PMS grinding agents is 145g stainless steel grinding balls, and the ground metallocene powder content is 0.138gThe ball mill was operated under air at 600rpm, the Fe content in each group was 1.841g, and Na content was measured 2 SO 3 The PDS and PMS contents were all 0.921g.
Fe/Na 2 SO 3 、Zn/Na 2 SO 3 、Al/Na 2 SO 3 、Mg/Na 2 SO 3 The grinding agent combination is carried out under the air condition that 145g of stainless steel grinding balls, the ground dispersion content is 0.138g, the rotating speed of a ball mill is 300rpm, the Fe, zn, al, mg content in each group is 1.841g, and the Na content is 1 2 SO 3 The content is 0.921g. Grinding samples are weighed at intervals, pretreated and respectively injected into a high-efficiency gas chromatograph and an ion chromatograph for detection and analysis, and the degradation rate and the dechlorination rate are calculated.
The results are shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, and we found Fe/Na 2 SO 3 Can be operated at the rotation speed of 600rpm at most, and the degradation rate can reach 98 percent, and the dechlorination rate can reach 97 percent.
In addition, in the experimental process, the rotating speed is further increased, and three active metals of Zn, al and Mg are found to be burnt vigorously when running at the rotating speed of 400rpm, so that the reaction is stopped. While Fe/Na at 400rpm 2 SO 3 The combined degradation dechlorination of the dimetalum powder can reach about 70%, so that we consider Fe/Na 2 SO 3 The combination of degradation and dechlorination of the dimetalum can achieve more ideal effect under the condition of high rotating speed, and the subsequent experiment is continued.
EXAMPLE 2 Fe/Na 2 SO 3 Influence of the dechlorination effect of the metallocene powder on the mass fraction of Fe
The Fe content is 0%, 10%, 20%, 30%, 50%, 66.6%, 80%, 90%, 100%, namely 0g, 0.276g, 0.552g, 0.828g, 1.38g, 1.838g, 2.208g, 2.484g, 2.76g, corresponding Na 2 SO 3 The contents are 2.76g, 2.484g, 2.208g, 1.932g, 1.38g, 0.922g, 0.552g, 0.276g and 0g respectively. The other conditions are as follows: 145g of stainless steel grinding balls, the ground powder content is 0.138g, the rotating speed of the ball mill is 600rpm, and the atmosphere of the ball mill is air.
The results are shown in FIG. 5, and the data show that the system has the best effect on dechlorination of the metallocene bulk mechanical grinding when the Fe content is 66.6%.
Example 3 Effect of different ball ratios on dechlorination Effect of metallocene
At a ball-to-material ratio of 20:1. 35: 1. 50:1. 65: 1. 80: grinding under the condition 1, wherein the ball-to-material ratio is 20:1, fe, na 2 SO 3 The deluxe powder is 4.603g, 2.302g and 0.345g respectively, and the ball-to-material ratio is 35:1, fe, na 2 SO 3 The deluxe powder is respectively 2.630g, 1.315g and 0.197g, and the ball-to-material ratio is 50:1, fe, na 2 SO 3 The deluxe powder is 1.841g, 0.921g and 0.138g respectively, and the ball-to-material ratio is 65:1, fe, na 2 SO 3 The deluxe powder is respectively 1.416g, 0.708g and 0.106g, and the ball-to-material ratio is 80:1, fe, na 2 SO 3 The ditocene powder is 1.151g, 0.575g and 0.086g respectively, and the other conditions are as follows: 145g stainless steel grinding balls, the rotation speed of the ball mill is 600rpm, and the atmosphere of the ball mill is air.
The results are shown in fig. 6, and the data indicate that when the ball-to-material ratio is 50:1, the system has the best effect of dechlorination by mechanical grinding of the metallocene powder.
Example 4 Effect of different Material ratios on dechlorination Effect of metallocene
In the material ratio of 10: 1. 15: 1. 20:1. 25: 1. 30: grinding under the condition of 1, wherein the material ratio is 10:1, fe, na 2 SO 3 The ditocene powder is 1.758g, 0.879g and 0.264g respectively, and the material ratio is 15:1, fe, na 2 SO 3 The ground metallocene powder is respectively 1.813g, 0.906g and 0.181g, and the material ratio is 20:1, fe, na 2 SO 3 The ditocene powder is 1.841g, 0.921g and 0.138g respectively, and the material ratio is 25:1, fe, na 2 SO 3 The ground metallocene powder is respectively 1.859g, 0.929g and 0.112g, and the material ratio is 30:1, fe, na 2 SO 3 The respective amount of the ditocene powder is 1.871g, 0.936g and 0.094g, and the other conditions are that: 145g stainless steel grinding balls, the rotation speed of the ball mill is 600rpm, and the atmosphere of the ball mill is air.
The results are shown in fig. 7, and the data indicate that when the material ratio is 20:1, the system has the best effect of dechlorination by mechanical grinding of the metallocene powder.
Finally, it should be noted that the above list is only a few specific embodiments of the present invention. Obviously, the invention is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present invention.

Claims (8)

1. Fe/Na 2 SO 3 A method for degrading metallocene powder by a mechanical grinding agent, which is characterized by comprising the following steps: iron powder, na 2 SO 3 Adding the powder and the deluxe powder into a planetary ball mill, and ball milling for 40min-100min under the rotating speed of 450rpm-600rpm in an air atmosphere; the mass of the iron powder is the iron powder and Na 2 SO 3 60% -90% of the total mass of (a); the iron powder, na 2 SO 3 The mass ratio of the total mass to the dimesna powder is 15-25:1, a step of; the ball-milling ball-material ratio is 50-80:1.
2. the Fe/Na film according to claim 1 2 SO 3 A method for degrading metallocene powder by mechanical grinding agents, which is characterized by comprising the following steps: the rotational speed of the ball mill was 600rpm.
3. The Fe/Na film according to claim 1 2 SO 3 A method for degrading metallocene powder by mechanical grinding agents, which is characterized by comprising the following steps: the ball milling time is 100min.
4. The Fe/Na film according to claim 1 2 SO 3 A method for degrading metallocene powder by mechanical grinding agents, which is characterized by comprising the following steps: the mass of the iron powder is the iron powder and Na 2 SO 3 60% -70% of the total mass of the composition.
5. The Fe/Na film according to claim 4 2 SO 3 A method for degrading metallocene powder by mechanical grinding agents, which is characterized by comprising the following steps: the mass of the iron powder is the iron powder and Na 2 SO 3 66.6% of the total mass of (c).
6. The Fe/Na film according to claim 1 2 SO 3 A method for degrading metallocene powder by mechanical grinding agents, which is characterized by comprising the following steps: the iron powder, na 2 SO 3 The mass ratio of the total mass to the dimesna powder is 20:1.
7. the Fe/Na film according to claim 1 2 SO 3 A method for degrading metallocene powder by mechanical grinding agents, which is characterized by comprising the following steps: the ball-milling ball-material ratio is 50:1.
8. the Fe/Na film according to claim 1 2 SO 3 A method for degrading metallocene powder by a mechanical grinding agent, which is characterized by comprising the following steps: iron powder, na 2 SO 3 Adding the powder and the deluxe powder into a planetary ball mill, and ball milling for 100min at the rotating speed of 600rpm in an air atmosphere; the mass of the iron powder is the iron powder and Na 2 SO 3 66.6% of the total mass of (a); the iron powder, na 2 SO 3 The mass ratio of the total mass to the dimesna powder is 20:1, a step of; the ball-milling ball-material ratio is 50:1.
CN202311429664.5A 2023-10-30 2023-10-30 Fe/Na 2 SO 3 Method for efficiently degrading metallocene powder by mechanical grinding agent Pending CN117482461A (en)

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