CN114605470A - Method for refining and decoloring glufosinate-ammonium stock solution - Google Patents
Method for refining and decoloring glufosinate-ammonium stock solution Download PDFInfo
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- CN114605470A CN114605470A CN202210355953.4A CN202210355953A CN114605470A CN 114605470 A CN114605470 A CN 114605470A CN 202210355953 A CN202210355953 A CN 202210355953A CN 114605470 A CN114605470 A CN 114605470A
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- glufosinate
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- IAJOBQBIJHVGMQ-UHFFFAOYSA-N 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid Chemical compound CP(O)(=O)CCC(N)C(O)=O IAJOBQBIJHVGMQ-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000011550 stock solution Substances 0.000 title claims abstract description 50
- 238000007670 refining Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000000243 solution Substances 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 238000001179 sorption measurement Methods 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 230000008929 regeneration Effects 0.000 claims abstract description 8
- 238000011069 regeneration method Methods 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 238000011085 pressure filtration Methods 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 abstract description 16
- 238000002156 mixing Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000575 pesticide Substances 0.000 abstract description 3
- 239000003575 carbonaceous material Substances 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 10
- 239000011148 porous material Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000002363 herbicidal effect Effects 0.000 description 5
- 239000004009 herbicide Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000005561 Glufosinate Substances 0.000 description 1
- 239000005562 Glyphosate Substances 0.000 description 1
- TZHYBRCGYCPGBQ-UHFFFAOYSA-N [B].[N] Chemical compound [B].[N] TZHYBRCGYCPGBQ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 description 1
- 229940097068 glyphosate Drugs 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- FIKAKWIAUPDISJ-UHFFFAOYSA-L paraquat dichloride Chemical compound [Cl-].[Cl-].C1=C[N+](C)=CC=C1C1=CC=[N+](C)C=C1 FIKAKWIAUPDISJ-UHFFFAOYSA-L 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009333 weeding Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/30—Phosphinic acids [R2P(=O)(OH)]; Thiophosphinic acids ; [R2P(=X1)(X2H) (X1, X2 are each independently O, S or Se)]
- C07F9/301—Acyclic saturated acids which can have further substituents on alkyl
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a method for refining and decoloring glufosinate-ammonium stock solution, and belongs to the technical field of active carbon materials and pesticide refining. Mixing a glufosinate-ammonium stock solution and surface modified mesoporous activated carbon, adsorbing and filter-pressing to obtain a decolored and refined faint yellow glufosinate-ammonium solution; wherein, the mesoporous rate of the surface modified mesoporous activated carbon is 40 to 90 percent; the liquid-solid ratio of the glufosinate-ammonium stock solution to the surface modified mesoporous activated carbon is 5-30 mL/g. The surface modified mesoporous activated carbon is used for treating the glufosinate-ammonium aqueous solution, so that the effect of selective adsorption, refining and decoloring is achieved, and the modified mesoporous activated carbon is used for refining and decoloring the glufosinate-ammonium stock solution through solvent regeneration circulation. The method has the advantages of low energy consumption, simple method, renewable and cyclic utilization of the selected mesoporous activated carbon and the solvent, capability of improving the concentration of the glufosinate-ammonium solution, excellent permanent decoloring effect, light transmittance of more than 30 percent, safety, environmental protection, low cost and simple and convenient process.
Description
Technical Field
The invention belongs to the technical field of active carbon materials and pesticide refining, and particularly relates to a method for refining and decoloring glufosinate-ammonium stock solution.
Background
The glufosinate-ammonium is a hypophosphorous acid type non-conductive biocidal herbicide with high efficiency, broad spectrum, low toxicity and environmental friendliness. Because the herbicide is easy to degrade in soil, safe to crops, difficult to drift, wide in weeding spectrum, high in activity, low in dosage and low in environmental stress, the herbicide is a novel herbicide for replacing glyphosate and paraquat, and the market demand of the herbicide is rapidly increased. The glufosinate-ammonium stock solution prepared by the prior art contains 15-30 wt% of glufosinate-ammonium, and the stock solution is dark in color, generally brownish red, due to colored organic impurities generated by side reactions. The export standard of glufosinate-ammonium has higher requirements on the pigment, and the pigment not only influences the appearance of the product, but also can precipitate and aggregate when being stored for a long time, thereby causing adverse effects on subsequent use. Therefore, a proper decoloring process needs to be designed to solve the pigment problem.
However, the membrane separation technology has the problems of high cost, large process energy consumption, complex equipment structure and the like; the macroporous adsorption resin technology has the problems of complex adsorption-desorption process, high cost and the like; the technologies of organic alkali, ethylene oxide, hydrogen peroxide and the like have the problems of large risk coefficient, reduction of glufosinate concentration, poor stability, easy color deepening and the like. Therefore, the development of a green, simple and efficient glufosinate-ammonium stock solution decoloring technology is urgently needed.
The activated carbon is used as a carbon adsorption material which is renewable, has a developed pore structure, a large specific surface area and strong adsorption capacity, and is widely applied to the refining and purification processes of the industries such as pesticide, medicine, war industry, food, metallurgy, chemical industry, environmental protection and the like. However, for different application objects, the pore size distribution optimization, surface electronic structure regulation, selective adsorption performance and regeneration cyclicity of the activated carbon are still the technical difficulties in the refining field.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a method for refining and decoloring glufosinate-ammonium stock solution, which solves the problems of low decoloring efficiency, high cost, complex process, low safety, poor color stability and the like of the existing glufosinate-ammonium stock solution, and the problems of selective adsorption and regeneration recycling of activated carbon.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a method for refining and decoloring glufosinate-ammonium stock solution comprises the steps of mixing the glufosinate-ammonium stock solution with surface modified mesoporous activated carbon, adsorbing, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution; wherein, the mesoporous rate of the surface modified mesoporous activated carbon is 40 to 90 percent; the liquid-solid ratio of the glufosinate-ammonium stock solution to the surface modified mesoporous activated carbon is 5-30 mL/g.
In the method for refining and decoloring the glufosinate-ammonium stock solution, the mesoporous rate of the surface modified mesoporous activated carbon is 46-78%, and preferably 66%; the liquid-solid ratio of the glufosinate-ammonium stock solution to the surface modified mesoporous activated carbon is 5-10 mL/g, and preferably 10 mL/g.
The method for refining and decoloring the glufosinate-ammonium stock solution comprises the step of carrying out high-temperature doping modification treatment on the surface modified mesoporous activated carbon by nitrogen, phosphorus or boron heteroatoms.
The method for refining and decoloring the glufosinate-ammonium stock solution comprises the steps of mixing surface modified mesoporous activated carbon with saturated adsorption with a solvent, carrying out gradient washing and filter pressing to obtain regenerated surface modified mesoporous activated carbon, and recycling the regenerated surface modified mesoporous activated carbon for refining and decoloring the glufosinate-ammonium stock solution; the solvent is one or more of ethanol, acetone or water; the liquid-solid ratio of the solvent to the saturated surface modified mesoporous activated carbon is 10-30 mL/g.
In the method for refining and decoloring the glufosinate-ammonium stock solution, the solvent is water; the liquid-solid ratio of the solvent to the saturated surface modified mesoporous activated carbon is 20 mL/g.
According to the method for refining and decoloring the glufosinate-ammonium stock solution, the adsorption, filter pressing and regeneration washing are carried out at normal temperature and normal pressure, and the adsorption and regeneration treatment time is 2-8 hours.
Has the advantages that: compared with the prior art, the invention has the advantages that:
(1) the surface modified mesoporous activated carbon selected by the invention can selectively adsorb colored organic impurities in the glufosinate-ammonium stock solution by regulating the pore size distribution and the surface electronic structure of the activated carbon, the dark brown glufosinate-ammonium stock solution is refined into a yellow or light yellow solution, the concentration of glufosinate-ammonium is not influenced, and the solution has good color stability.
(2) The activated carbon can be recycled after being regenerated by simple water phase washing, and the excellent decolorizing effect is kept.
(3) The adsorption and regeneration processes are carried out under normal temperature and pressure, the energy consumption is low, and the process is simple.
(4) The decolorized glufosinate-ammonium solution product is circularly refined by using the surface modified mesoporous activated carbon, the light transmittance is 6-35% (the wave number is 426nm), the yield is 99.7-99.9%, and the color reaches the export standard.
Drawings
FIG. 1 is a technical roadmap for the present invention;
FIG. 2 is a DFT pore size distribution plot for activated carbons from examples 1, 2, 3, 5.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with examples are described in detail below. In the following examples, the light transmittance was measured at a wavelength of 426nm, and the selected glufosinate-ammonium stock solution had a concentration of 24.1 wt% and a light transmittance of 0.02%.
Example 1
Mixing a glufosinate-ammonium stock solution and activated carbon with 46% of mesoporous rate according to a liquid-solid ratio of 5mL/g, stirring and adsorbing for 6 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 6.71%, and the concentration is 22.5 wt%.
Example 2
Mixing a glufosinate-ammonium stock solution and active carbon with a porosity of 57% according to a liquid-solid ratio of 10mL/g, stirring and adsorbing for 6 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 11.9%, and the concentration is 21.8 wt%.
Example 3
Mixing a glufosinate-ammonium stock solution and activated carbon with 66% of mesoporous rate according to a liquid-solid ratio of 20mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 11.4%, and the concentration is 23.9 wt%.
Example 4
Mixing a glufosinate-ammonium stock solution and activated carbon with 66% of mesoporous rate according to a liquid-solid ratio of 10mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 25.6%, and the concentration is 23.5 wt%.
Example 5
Mixing a glufosinate-ammonium stock solution and activated carbon with 75% of mesoporous rate according to a liquid-solid ratio of 10mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 31.9%, and the concentration is 23.2 wt%.
FIG. 2 is a DFT pore size distribution plot for activated carbons of examples 1, 2, 3, and 5, showing the approximate ratio of mesopore volume to total pore volume for different activated carbons.
Example 6
Mixing a glufosinate-ammonium stock solution and activated carbon with 75% of mesoporous rate according to a liquid-solid ratio of 30mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 8.1%, and the concentration is 23.6 wt%.
In examples 1 to 6, the active carbon is used to adjust the mesoporous rate of the glufosinate-ammonium stock solution, the light transmittance of the refined glufosinate-ammonium solution is significantly improved compared with that of the glufosinate-ammonium stock solution, and the influence on the concentration of the glufosinate-ammonium stock solution is not large, which indicates that the active carbon is adjusted by the mesoporous rate, and the active carbon is favorably applied to the selective refining and decoloring treatment of the glufosinate-ammonium solution.
Example 7
Treating the mesoporous activated carbon with the mesoporous rate of 66% for 2 hours at the high temperature of 900 ℃ in the atmosphere of 5 wt% ammonia gas of 100mL/min to obtain 2.6 wt% nitrogen-doped mesoporous activated carbon; and then mixing the glufosinate-ammonium stock solution and the modified mesoporous activated carbon according to the liquid-solid ratio of 10mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 33.7%, and the concentration is 21.6 wt%.
Example 8
Compounding mesoporous activated carbon with 66% of mesoporous rate and boric acid (the mass ratio is 10:1), and then carrying out high-temperature treatment at 900 ℃ for 2 hours in 100mL/min 5 wt% ammonia gas atmosphere to obtain 3.2 wt% nitrogen and 1.3 wt% boron co-doped mesoporous activated carbon; and then mixing the glufosinate-ammonium stock solution and the modified mesoporous activated carbon according to the liquid-solid ratio of 10mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 35.6%, the concentration is 24.3 wt%, and the product yield is 99.9%.
Example 9
Compounding mesoporous activated carbon with 66% of mesoporous rate and phosphoric acid (the mass ratio is 8:1), and then carrying out high-temperature treatment at 900 ℃ for 2 hours in 100mL/min 5 wt% ammonia gas atmosphere to obtain 2.1 wt% nitrogen and 0.2 wt% phosphorus co-doped mesoporous activated carbon; and then mixing the glufosinate-ammonium stock solution and the modified mesoporous activated carbon according to the liquid-solid ratio of 10mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing filter pressing to obtain a decolorized and refined glufosinate-ammonium solution, wherein the light transmittance is 32.8%, and the concentration is 24.2 wt%.
Example 10
Regeneration-adsorption
(1) Mixing glufosinate-ammonium stock solution and boron-nitrogen co-doped modified wet activated carbon with 75% mesoporous rate according to a liquid-solid ratio of 10mL/g, stirring and adsorbing for 2 hours at normal temperature and normal pressure, and performing pressure filtration to obtain decolorized and refined glufosinate-ammonium solution, wherein the light transmittance of the solution is 37.3%, and the concentration of the solution is 24.2 wt%;
(2) mixing the adsorbed saturated modified mesoporous activated carbon with water according to the liquid-solid ratio of 20mL/g, oscillating for 3h at normal temperature and normal pressure, and performing pressure filtration to obtain regenerated wet mesoporous activated carbon for cyclic use in decolorization and refining of glufosinate-ammonium stock solution;
(3) repeating the steps (1) and (2), and after 8 times of recycling, the light transmittance of the refined glufosinate-ammonium solution is 34.2%, the concentration of the refined glufosinate-ammonium solution is 24.2%, and the yield of the glufosinate-ammonium product (wherein the yield of the glufosinate-ammonium product is equal to the mass concentration of the glufosinate-ammonium product solution/(the mass concentration of the glufosinate-ammonium stock solution)) is 99.7%.
Claims (6)
1. A method for refining and decoloring glufosinate-ammonium stock solution is characterized in that the glufosinate-ammonium stock solution and surface modified mesoporous activated carbon are mixed, adsorbed and filter-pressed to obtain refined glufosinate-ammonium solution for decoloring; wherein, the mesoporous rate of the surface modified mesoporous activated carbon is 40 to 90 percent; the liquid-solid ratio of the glufosinate-ammonium stock solution to the surface modified mesoporous activated carbon is 5-30 mL/g.
2. The method for refining and decoloring glufosinate-ammonium stock solution according to claim 1, wherein the mesoporous rate of the surface-modified mesoporous activated carbon is 46-75%; the liquid-solid ratio of the glufosinate-ammonium stock solution to the surface modified mesoporous activated carbon is 5-10 mL/g.
3. The method for refining and decoloring glufosinate-ammonium stock solution according to claim 1, wherein the surface modified mesoporous activated carbon is modified by high-temperature doping with nitrogen, phosphorus or boron heteroatoms.
4. The method for refining and decoloring glufosinate-ammonium stock solution according to claim 1, wherein the surface-modified mesoporous activated carbon saturated in adsorption is mixed with a solvent, subjected to gradient washing and filter pressing to obtain regenerated surface-modified mesoporous activated carbon, and recycled for refining and decoloring glufosinate-ammonium stock solution; the solvent is one or more of ethanol, acetone or water; the liquid-solid ratio of the solvent to the saturated surface modified mesoporous activated carbon is 10-30 mL/g.
5. The method for refining and decoloring glufosinate-ammonium stock solution according to claim 4, wherein the solvent is water; the liquid-solid ratio of the solvent to the saturated surface modified mesoporous activated carbon is 20 mL/g.
6. The method for refining and decoloring glufosinate-ammonium stock solution according to claim 1 or 4, wherein the adsorption, pressure filtration and regeneration washing are carried out at normal temperature and normal pressure, and the adsorption and regeneration treatment time is 2-8 h.
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| CN114773384A (en) * | 2022-03-25 | 2022-07-22 | 内蒙古灵圣作物科技有限公司 | Method for treating glufosinate-ammonium crystallization mother liquor |
| CN114773384B (en) * | 2022-03-25 | 2024-04-16 | 内蒙古灵圣作物科技有限公司 | Treatment method of glufosinate-ammonium crystallization mother liquor |
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