CN115970653A - Preparation of lithium ion battery leachate purification and impurity removal resin and impurity removal method thereof - Google Patents
Preparation of lithium ion battery leachate purification and impurity removal resin and impurity removal method thereof Download PDFInfo
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- CN115970653A CN115970653A CN202211552458.9A CN202211552458A CN115970653A CN 115970653 A CN115970653 A CN 115970653A CN 202211552458 A CN202211552458 A CN 202211552458A CN 115970653 A CN115970653 A CN 115970653A
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- 239000011347 resin Substances 0.000 title claims abstract description 61
- 229920005989 resin Polymers 0.000 title claims abstract description 61
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000012535 impurity Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000000746 purification Methods 0.000 title abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 27
- 239000001257 hydrogen Substances 0.000 claims abstract description 27
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 23
- 230000005496 eutectics Effects 0.000 claims abstract description 19
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000004088 simulation Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000005303 weighing Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 230000010355 oscillation Effects 0.000 claims abstract description 4
- 229910021645 metal ion Inorganic materials 0.000 claims description 9
- 239000003463 adsorbent Substances 0.000 claims description 8
- 238000002386 leaching Methods 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 7
- 238000010828 elution Methods 0.000 claims description 6
- XKBGEWXEAPTVCK-UHFFFAOYSA-M methyltrioctylammonium chloride Chemical group [Cl-].CCCCCCCC[N+](C)(CCCCCCCC)CCCCCCCC XKBGEWXEAPTVCK-UHFFFAOYSA-M 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- ORIHZIZPTZTNCU-YVMONPNESA-N salicylaldoxime Chemical compound O\N=C/C1=CC=CC=C1O ORIHZIZPTZTNCU-YVMONPNESA-N 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- FZENGILVLUJGJX-NSCUHMNNSA-N (E)-acetaldehyde oxime Chemical compound C\C=N\O FZENGILVLUJGJX-NSCUHMNNSA-N 0.000 claims description 3
- VTWKXBJHBHYJBI-SOFGYWHQSA-N (ne)-n-benzylidenehydroxylamine Chemical compound O\N=C\C1=CC=CC=C1 VTWKXBJHBHYJBI-SOFGYWHQSA-N 0.000 claims description 3
- 239000003480 eluent Substances 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 27
- 239000010949 copper Substances 0.000 abstract description 19
- 150000002500 ions Chemical class 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052802 copper Inorganic materials 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 239000011572 manganese Substances 0.000 description 5
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 101000737578 Arabidopsis thaliana Bifunctional cystathionine gamma-lyase/cysteine synthase Proteins 0.000 description 2
- 101000952234 Homo sapiens Sphingolipid delta(4)-desaturase DES1 Proteins 0.000 description 2
- 101000918926 Homo sapiens Sphingolipid delta(4)-desaturase/C4-monooxygenase DES2 Proteins 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 102100037416 Sphingolipid delta(4)-desaturase DES1 Human genes 0.000 description 2
- 102100029473 Sphingolipid delta(4)-desaturase/C4-monooxygenase DES2 Human genes 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- SOXUFMZTHZXOGC-UHFFFAOYSA-N [Li].[Mn].[Co].[Ni] Chemical compound [Li].[Mn].[Co].[Ni] SOXUFMZTHZXOGC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 aldoxime compound Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000622 liquid--liquid extraction Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000010926 waste battery Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
A preparation method of purification and impurity removal resin for lithium ion battery leachate comprises the steps of mixing a hydrogen bond donor and a hydrogen bond acceptor, then placing the mixture in an oven, heating and stirring to form uniform and transparent liquid, and obtaining a eutectic solvent combined in a hydrogen bond form; adding methanol, shaking, filtering, and drying in an oven to constant weight to obtain activated resin; weighing the eutectic solvent, adding dichloromethane, stirring until the eutectic solvent is completely dissolved, then adding activated resin, shaking, standing, heating, stirring and vacuumizing, and after dichloromethane is completely volatilized, putting into an oven and drying to obtain the DES/XAD-4 impregnating resin. Mixing the lithium ion battery simulation leachate with the impregnating resin DES/XAD-4, placing the mixture in a constant-temperature oscillation box, and oscillating the mixture in the oscillation box until the adsorption is balanced; the method has the characteristics of simple preparation process and strong purification and impurity removal capability, and can achieve the purpose of removing impurity ions of iron and copper in the waste lithium ion leachate.
Description
Technical Field
The invention relates to the technical field of lithium ion battery recovery, in particular to a preparation method of a lithium ion battery leachate purification impurity removal resin and an impurity removal method thereof.
Background
In recent decade, due to the rapid development of new energy automobiles and other industries, the usage amount of ternary lithium ion batteries is rapidly increased, and the number of waste ternary lithium ion batteries is increased. The effective recovery of the waste batteries with huge number can realize the sustainable utilization of resources and can also reduce the harm of toxic substances in the waste lithium ion batteries to the environment and the human health. The wet process is a common method for recovering waste lithium ion batteries, and dissolves elements such as nickel, cobalt, manganese and lithium in the lithium ion batteries in a leaching solution through links such as pretreatment, leaching and the like, but in the actual operation process, impurity metal ions such as iron, copper and the like also enter the leaching solution, so that nickel, cobalt and manganese solutions cannot be directly used for manufacturing new anode materials.
At present, extraction method and precipitation method are commonly used for removing impurity ions of iron and copper in the leaching solution. The solvent extraction method is simple to operate and good in separation effect, but a large amount of organic waste liquid is generated in the process. The precipitation method is simple to operate, the precipitator is low in price, and the removal rate of iron and copper is low. In the literature (PENG, fangwei, et al, impurity removal with high selectivity and efficiency methods and the recycling of metal from lithium-ion batteries, RSC advances,2019,9.38, 21922-21930), to remove the impurity ions iron, aluminum, copper in lithium-ion battery leachate, the authors will adjust the pH of the leachate to 3.5 with NaOH solution and remove Fe (III); then NH 3 ·H 2 0 is buffer solution, and the pH value of the solution is increased to 5.25 of impurities to remove Al (III); finally, a great amount of Cu (II) ions are removed with high selectivity by using an electrodeposition technology, and the residual Cu (II) ions are removed by using N902 as a solvent for extraction.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the preparation method of the purification and impurity removal resin for the lithium ion battery leachate and the impurity removal method thereof, which have the characteristics of simple preparation process and strong purification and impurity removal capability.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of impregnating resin for purifying and decontaminating lithium ion battery leachate comprises the following steps;
step 1, preparation of eutectic solvent:
mixing a hydrogen bond donor and a hydrogen bond acceptor, then placing the mixture in an oven, heating and stirring the mixture until uniform and transparent liquid is formed, and obtaining a eutectic solvent (DES) combined in a hydrogen bond form as an extracting agent;
step 2, preparation of impregnating resin:
(1) Activating macroporous resin XAD-4;
weighing macroporous resin XAD-4, adding methanol, shaking, performing suction filtration, repeating the step of activating the carrier XAD-4 macroporous resin for 2-3 times, and drying in an oven to constant weight to obtain activated resin;
(2) Preparing an adsorbent by an impregnation method;
weighing the (DES) eutectic solvent prepared in the step 1, adding dichloromethane, stirring until the eutectic solvent is completely dissolved, then adding a certain mass of the activated resin, shaking, standing, heating and stirring while vacuumizing, and after dichloromethane is completely volatilized, putting into an oven and drying to obtain the DES/XAD-4 impregnating resin.
In the step 1, the mixture is heated and stirred for 1 to 2 hours under the condition that the temperature of the oven is between 60 and 80 ℃.
In the step 1, the hydrogen bond acceptor is trioctylmethylammonium chloride, and the hydrogen bond donor is one of aldoxime salicylaldoxime, 5-anyylsalicylaldoxime and benzaldoxime containing a benzene ring.
In the step 1, the hydrogen bond acceptor is mixed with the hydrogen bond acceptor according to a molar ratio of 1.
In the step (1), methanol is 2-3 times of the volume ratio of macroporous resin XAD-4, the vibration is carried out for 2h, and the temperature of an oven is 80 ℃.
And (3) shaking and standing for 24h in the step (2), heating and stirring while vacuumizing at the temperature of 35 ℃, putting into an oven after the solvent is completely volatilized, and drying for 24h at the temperature of 40 ℃.
The ratio of the eutectic solvent, dichloromethane and activated resin is 1g to 20mL.
An impurity removal method for purifying and removing resin from lithium ion battery leachate comprises the following steps;
static adsorption experiment:
adding the impregnated resin DES/XAD-4 into the lithium ion battery simulation leachate, then placing the lithium ion battery simulation leachate into a constant-temperature oscillation box, and oscillating the lithium ion battery simulation leachate until the adsorption balance is achieved;
elution of metal ions:
and (3) eluting the metal ions adsorbed on the resin by using a proper eluent, and returning the eluted resin to the static adsorption experiment for recycling.
The lithium ion battery simulated leaching solution and the impregnating resin DES/XAD-4 are mixed by the following ratio of 20mL:0.4 g-20 ml:1g of the mixture is mixed and shaken for 24 hours at the temperature of 25 ℃ and at the speed of 160 r/min. The excessive temperature can cause Fe to precipitate, thereby affecting the adsorption effect, and therefore, the Fe removal is more favorable at low temperature.
The invention has the beneficial effects that:
the prepared eutectic solvent is loaded on the macroporous resin by a solvent impregnation method, and the eutectic solvent loaded on the resin has the advantages of wide raw material source, low price, no toxicity, no harm, easy degradation, simple preparation process and no toxicity or harm of the raw materials. Aiming at different treatment targets, the types of the extracting agents can be adjusted, impurity ions of iron and copper in the lithium ion battery leachate can be selectively removed in different adsorption systems, and the problems that the extracting agents are difficult to separate from water phase, the selectivity is poor and the like in the liquid-liquid extraction neutralization adsorption process are solved.
Compared with the traditional extractant, the eutectic solvent has the advantages of low volatility, difficult combustion, easy regulation and control and the like, different reagents can be selected to synthesize impregnating resin according to different treatment targets, the adsorbing material is used for removing impurities from the leachate of the waste lithium ion battery, the operation is simple, the loss rate of valuable metals is low while impurity ions are removed, the obtained pure nickel-cobalt-manganese-lithium mixed solution is used for preparing a precursor of the lithium ion battery, and the recycling of the valuable metals in the waste lithium ion battery is realized.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1:
synthetic adsorbent DES1/XAD-4 impregnated resin is synthesized by loading eutectic solvent prepared by taking trioctylmethylammonium chloride and salicylaldoxime as hydrogen bond acceptor and hydrogen bond donor on macroporous resin, and is used for removing impurity ions Fe in leachate 3+ 、Cu 2+ The method comprises the following specific steps:
adding 1g prepared DES1/XAD-4 impregnating resin into 20ml lithium ion battery simulated leaching solution (Fe) 3+ 、Cu 2+ 、Al 3+ 、Ni 2+ 、Co 2+ 、Mn 2+ 、Li + Mixed solution of (1), the solution Cl is adjusted - The concentration and the pH value are sampled after shaking for 24 hours at the temperature of 25 ℃ and the speed of 150r/min, the ion concentration of each metal ion in the solution is measured by ICP-OES, and the result shows that the concentration and the pH value are Cl - The concentration is 4M,H + Under the condition of 4M concentration, 99 percent of Fe can be added 3+ Removing, then adjusting the pH of the solution to 2, and removing the residual 99% of Cu in the solution 2+ And (5) removing. Reuse of 3M H 2 SO 4 Eluting the adsorption resin, and measuring Fe in the eluate by ICP-OES 3+ 、Cu 2+ Calculated as elution rate of 99%. The resin after elution can be returned to the step 4 for recycling.
Example 2:
the method is characterized in that a eutectic solvent prepared by taking trioctylmethylammonium chloride and 5-anylsilylsalicylaldoxime as a hydrogen bond acceptor and a hydrogen bond donor is loaded on macroporous resin to synthesize adsorbent DES2/XAD-4 impregnated resin, and the adsorbent is used for separating impurity iron and copper and valuable metal nickel and cobalt in a ternary lithium ion battery leachate, and comprises the following specific steps:
0.4g of prepared DES2/XAD-4 resin is added into 20ml of lithium ion battery simulation leachate (Fe) 3+ 、Cu 2+ 、Al 3+ 、Ni 2+ 、Co 2+ 、Mn 2+ 、Li + Mixed solution of (1), the solution Cl is adjusted - The concentration is 3M, the pH is not larger than 2, the sample is taken after shaking for 24h under the conditions of 25 ℃ and 150r/min, the ion concentration of each metal ion in the solution is measured by ICP-OES, and Fe is calculated 3+ 、Cu 2+ The adsorption rate can reach 99%, and the loss rate of other metal ions<10% results show 3M Cl - The prepared adsorbent is used for treating Fe under the condition of pH =2 3+ 、Cu 2+ Has higher selectivity, can convert Fe into 3+ 、Cu 2+ And Ni 2+ 、Co 2+ 、Mn 2+ 、Li + And (4) separating. Reuse of 3M H 2 SO 4 Eluting the adsorption resin, and measuring Fe in the eluate by ICP-OES 3+ 、Cu 2+ Calculated as elution rate of 99%. The resin after elution can be returned to the step 4 for recycling. Experimental results prove that the adsorbent is synthesized by loading a eutectic solvent prepared by taking trioctylmethylammonium chloride and aldoxime reagents as a hydrogen bond acceptor and a hydrogen bond donor on macroporous resin, so that impurities, namely iron and copper in a ternary lithium ion battery leachate can be removed and the requirement of preparing a precursor can be met, and metal ions adsorbed on the resin can be eluted by using different eluents, thereby realizing the recycling of the adsorbent.
In object 1 of the present invention, the hydrogen bond acceptor is trioctylmethylammonium chloride, and the hydrogen bond donor is an aldoxime compound containing a benzene ring such as: salicylaldoxime, 5-anylsalicylaldoxime, benzaldoxime and the like are mixed according to a molar ratio of 1 to 1, and the mixing effect of a hydrogen bond acceptor and a hydrogen bond donor is found to be optimal according to a molar ratio of 1.
Object of the invention 2: the carrier XAD-4 macroporous resin has larger specific surface area, provides space for loading DES, is acid-resistant, has excellent physical, chemical and temperature stability, is renewable, is not influenced by adsorption conditions, and is more suitable for serving as a carrier material.
Claims (9)
1. A preparation method of impregnating resin for purifying and decontaminating lithium ion battery leachate is characterized by comprising the following steps;
step 1, preparation of eutectic solvent:
mixing a hydrogen bond donor and a hydrogen bond acceptor, then placing the mixture in an oven, heating and stirring the mixture to form uniform and transparent liquid, and obtaining a eutectic solvent (DES) combined in a hydrogen bond form as an extracting agent;
step 2, preparation of impregnating resin:
(1) Activating macroporous resin XAD-4;
weighing macroporous resin XAD-4, adding methanol, shaking, performing suction filtration, repeating the step of activating the carrier XAD-4 macroporous resin for 2-3 times, and drying in an oven to constant weight to obtain activated resin;
(2) Preparing an adsorbent by an impregnation method;
weighing the eutectic solvent (DES) prepared in the step 1, adding dichloromethane, stirring until the eutectic solvent is completely dissolved, then adding a certain mass of the activated resin, shaking and standing, then heating and stirring while vacuumizing, and after dichloromethane is completely volatilized, putting into an oven and drying to obtain the DES/XAD-4 impregnated resin.
2. The method for preparing the impregnating resin for purifying and decontaminating lithium ion battery leachate according to claim 1, wherein in the step 1, the heating and stirring are performed for 1 to 2 hours at an oven temperature of 60 ℃ to 80 ℃.
3. The method according to claim 1, wherein in the step 1, the hydrogen bond acceptor is trioctylmethylammonium chloride, and the hydrogen bond donor is one of aldoxime salicylaldoxime, 5-anylsalicylaldoxime and benzaldoxime containing a benzene ring.
4. The method for preparing the impregnating resin for purifying the lithium ion battery leaching solution according to the claim 1, wherein in the step 1, the hydrogen bond donor and the hydrogen bond acceptor are mixed according to a molar ratio of 1 to 1.
5. The method for preparing the impregnating resin for purifying the lithium ion battery leachate according to the claim 1, wherein in the step (1), the methanol is 2-3 times of the macroporous resin XAD-4 in volume ratio, the shaking is carried out for 2h, and the temperature of an oven is 80 ℃.
6. The preparation method of the impregnating resin for purifying and decontaminating the lithium ion battery leachate according to claim 1, wherein the step (2) is performed by shaking, standing for 24 hours, heating and stirring at 35 ℃ while vacuumizing, putting into an oven after the solvent is completely volatilized, and drying at 40 ℃ for 24 hours.
7. The preparation method of the impregnating resin for purifying lithium ion battery leachate according to claim 1, wherein the ratio of the eutectic solvent, the dichloromethane and the activated resin is 1 g.
8. The method for purifying and decontaminating the lithium ion battery leachate by using the impregnating resin prepared by the preparation method according to any one of claims 1 to 7 is characterized by comprising the following steps;
static adsorption experiment:
adding the impregnated resin DES/XAD-4 into the lithium ion battery simulation leachate, then placing the lithium ion battery simulation leachate into a constant-temperature oscillation box, and oscillating the lithium ion battery simulation leachate until the adsorption balance is achieved;
elution of metal ions:
and (3) eluting the metal ions adsorbed on the resin by using a proper eluent, and returning the eluted resin to the static adsorption experiment for recycling.
9. The impurity removal method for the impregnated resin used for purifying the lithium ion battery leachate according to claim 7, wherein the lithium ion battery simulated leachate and the impregnated resin DES/XAD-4 are mixed in a volume of 20mL:0.4 g-20 ml:1g of the mixture is mixed and shaken for 24 hours at the temperature of 25 ℃ and at the speed of 160 r/min.
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| CN105219959A (en) * | 2015-11-06 | 2016-01-06 | 武汉理工大学 | Adopt the method for Solvent-Impregnated Resins isolation of purified extracting vanadium from stone coal pickling liquor |
| CN106521164A (en) * | 2016-11-07 | 2017-03-22 | 清华大学 | Composite extraction agent and method for recycling nickel from chemical nickel-plating waste liquid through composite extraction agent |
| US20200399737A1 (en) * | 2019-06-24 | 2020-12-24 | William Marsh Rice University | Recycling li-ion batteries using green chemicals and processes |
| CN111393705A (en) * | 2020-03-11 | 2020-07-10 | 河北大学 | Hydrophilic molecularly imprinted resin and preparation method and application thereof |
| CN111690813A (en) * | 2020-06-22 | 2020-09-22 | 南昌航空大学 | Method for leaching valuable metals in waste lithium ion batteries by using eutectic solvent |
| KR20220089122A (en) * | 2020-12-21 | 2022-06-28 | 주식회사 포스코 | Method for recovering of valuable metals from waste battery |
| CN112981139A (en) * | 2021-02-04 | 2021-06-18 | 西安建筑科技大学 | Hydrophobic eutectic solvent for separating nickel and cobalt ions, preparation method thereof and method for separating nickel and cobalt ions |
| CN114875243A (en) * | 2022-04-27 | 2022-08-09 | 中南大学 | Eutectic solvent, preparation method thereof and leaching method of lithium battery positive electrode material |
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