CN108394953A - A kind of poly ion liquid adsorbent and its preparation method and application towards zinc ion in water body - Google Patents
A kind of poly ion liquid adsorbent and its preparation method and application towards zinc ion in water body Download PDFInfo
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- CN108394953A CN108394953A CN201810359863.6A CN201810359863A CN108394953A CN 108394953 A CN108394953 A CN 108394953A CN 201810359863 A CN201810359863 A CN 201810359863A CN 108394953 A CN108394953 A CN 108394953A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
- B01J20/267—Cross-linked polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention relates to a kind of poly ion liquid adsorbent and its preparation method and application towards zinc ion in water body, the poly ion liquid adsorbent, by weight, raw material proportioning is as follows：12.1~22.1 parts of ionic liquid A；24.0~33.0 parts of ionic liquid B；29.1~40.0 parts of surfactant；14.0~20.0 parts of cosurfactant；4.7~8.4 parts of crosslinking agent；1.0~1.5 parts of initiator；The ionic liquid A is the compounding of one or both of 1 allyl, 3 methylimidazole villaumite, 1 allyl, 3 ethyl imidazol(e) villaumite, 1 allyl, 3 butyl imidazole villaumite or more, and the ionic liquid B is the compounding of one or both of 1 allyl, 3 methylimidazole hexafluorophosphate, 1 alkene hexyl, 3 methylimidazole hexafluorophosphate, 1 alkene octyl, 3 butyl imidazole hexafluorophosphate or more.
Description
Technical field
The present invention relates to a kind of adsorbent and its preparation method and application more particularly to a kind of poly ion liquid adsorbent and
Preparation method and application belong to sorbing material technical field.
Background technology
With the development of modern industry, more and more heavy metal ion are discharged into environment.Although treated
Water body can reach the discharge standard of national requirements, but since heavy metal ion can be enriched in organism, danger
Evil is still very serious.Zinc ion in water body is typical heavy metal ion pollutant, mostlys come from plating, mining and metallurgy
Industry.Although trace zinc ion is the necessary trace element of human body, excessive zinc ion can influence the mankind in natural environment
Health, it is therefore necessary to prepare efficient zinc ion adsorption material.
Poly ion liquid has huge advantage and application potential in terms of heavy metal in water ionic adsorption.First, have benefited from
" designability " of ionic liquid monomer, if introducing PF6- or Tf into poly ion liquid2N-Etc. hydrophobic anions, then its
Larger difference can occur for the dissolubility in water and in organic solvent, and this kind of hydrophobic poly ion liquid can be by simple different
Phase separation means carry out adsorbing separation to the heavy metal ion in water body.Secondly, " designability " of ionic liquid monomer can also
It assigns poly ion liquid and is directed to specific heavy metal ion adsorbed effective functional group, to improve its adsorptive selectivity.However, inhaling
Undesirable attached effect is still that current poly ion liquid is used to adsorb the main problem that heavy metal ion faces at present.It is reported
Poly- [3- bis- (fluoroform sulphonyl) inferior amine salts of base -1- vinyl imidazoles] is only to the maximum adsorption capacity of Cr (VI)
17.9mg/g is far below its maximum adsorption capacity to methyl blue.Poly ion liquid after sulfonic acid funtionalized is to Cr in water (VI)
Adsorption capacity can be improved to 40.8mg/g, however, this adsorption effect is still with other types adsorbent, there are apparent gaps.
Invention content
The present invention is low for existing poly ion liquid adsorbent adsorption capacity existing for absorbing heavy metal ions
Defect provides a kind of poly ion liquid adsorbent and its preparation method and application towards zinc ion in water body.
The technical solution that the present invention solves above-mentioned technical problem is as follows：
A kind of poly ion liquid adsorbent towards zinc ion in water body, by weight, raw material proportioning is as follows：
The ionic liquid A is 1- allyl -3- methylimidazole villaumites ([AMIm] Cl), 1- allyl -3- ethyl imidazol(e)s
The compounding of one or both of villaumite [AEIm] Cl, 1- allyl -3- butyl imidazoles villaumite ([ABIm] Cl) or more, it is described
Ionic liquid B is 1- allyl -3- methylimidazoles hexafluorophosphates ([AMIm] PF6), 1- alkene hexyl -3- methylimidazole hexafluoro phosphorus
Hydrochlorate ([AEIm] PF6), 1- alkene octyl -3- butyl imidazoles hexafluorophosphates ([ABIm] PF6One or both of) or more
Compounding.
Further, the crosslinking agent is polyethyleneglycol diacrylate, ethylene glycol dimethacrylate, 3,3'-, bis- sulphur
For the compounding of one or both of dipropionic acid two (N- hydroxysuccinimides) ester or more.
Further, the initiator is in 2,2- azodiisobutyronitriles, azobisisoheptonitrile, azo-bis-iso-dimethyl
One or two or more compounding.
Further, the surfactant is octyl phenyl polyoxyethylene ether (TX-100), cetyl trimethyl bromination
Bis- (2- ethylhexyls) the Disodium sulfosuccinate ([C of ammonium (CTAB), 1- cetyl -3- methylimidazoles16Min] [AOT]) in
One or two kinds of or more compoundings.
Further, the cosurfactant be isopropanol, n-butanol, n-amyl alcohol, one or both of n-octyl alcohol and
Above compounding.
The advantageous effect of poly ion liquid adsorbent provided by the invention is：
1) large specific surface area of adsorbent has good adsorption effect to the zinc ion in water body；
2) raw material is cheap and easy to get, and production cost is low.
The preparation method of above-mentioned poly ion liquid adsorbent is also claimed in the present invention, includes the following steps：
1) ionic liquid A and ionic liquid B are weighed by weight, is stirred evenly under the conditions of 30~80 DEG C, and mixing is made
Ionic liquid；
2) surfactant of corresponding parts by weight and cosurfactant are added to the hybrid ionic liquid obtained by step 1)
In body, stirred evenly under the conditions of 30~80 DEG C；
3) crosslinking agent of corresponding parts by weight is added into the product obtained by step 2), is stirred under the conditions of 30~80 DEG C equal
It is even, obtain ion liquid microemulsion；
4) initiator of corresponding parts by weight at room temperature, is added into the ion liquid microemulsion obtained by step 3), stirring is equal
It is even, after mixture is transferred in reactor, in 80~120 DEG C react 4~for 24 hours to get poly ion liquid adsorbent.
Further, the rotating speed of step 1) to whipping process in 4) is 300~1200rpm, and mixing time is 10~120min.
The advantageous effect of preparation method provided by the invention is：
1) preparation method of the invention not only solves the disadvantage that traditional solution rate is slow, production capacity is low, simultaneously
Also overcome the deficiency that bulk polymerization is easy reaction overheat when without mixing；
2) preparation method of the invention is easy to operate, and solvent recovery is easy.
Above-mentioned poly ion liquid adsorbent answering in Heavy Metals in Waters ionic adsorption field is also claimed in the present invention
With.
Further, the heavy metal ion refers to zinc ion.
Specific implementation mode
Principles and features of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1：
Claim raw material by following parts by weight：12.1 parts of ionic liquid A [AMIm] Cl, ionic liquid B [AEIm] PF624 parts, table
40 parts of face activating agent octyl phenyl polyoxyethylene ether (TX-100), 14.0 parts of cosurfactant n-butanol, the poly- second of crosslinking agent two
4.7 parts of alcohol diacrylate, initiator 2,1.3 parts of 2- azodiisobutyronitriles.
Above-mentioned ionic liquid A, ionic liquid B are mixed, stirred 50 minutes with 300 revs/min of speed at 60 DEG C, is prepared
At mixed ionic liquid；Surfactant and cosurfactant are added in mixed ionic liquid, at 60 DEG C with 300 turns/
The mixing speed of minute stirs 20 minutes；Crosslinking agent is added thereto afterwards, is stirred with 300 revs/min of mixing speed at 60 DEG C
30 minutes, it is prepared into ion liquid microemulsion；Initiator is added into above-mentioned ion liquid microemulsion system at room temperature, with 300
Rev/min speed stir 60 minutes；Mixture is transferred to autoclave, reacts 4h under the conditions of 100 DEG C, prepare high-performance gather from
Sub- liquid absorbent.
Embodiment 2：
Claim raw material by following parts by weight：22.1 parts of ionic liquid A [AEIm] Cl, ionic liquid B [ABIm] PF633 parts,
29.1 parts of surfactant cetyl trimethylammonium bromide (CTAB), 17 parts of cosurfactant n-amyl alcohol, crosslinking agent second two
8.4 parts of alcohol dimethylacrylate, 1.0 parts of initiator azo-bis-iso-dimethyl.
Above-mentioned ionic liquid A, ionic liquid B are mixed, stirred 40 minutes with 600 revs/min of mixing speed at 40 DEG C,
It is prepared into mixed ionic liquid；Surfactant and cosurfactant are added in mixed ionic liquid at room temperature, 40 DEG C
Under stirred 30 minutes with 600 revs/min of mixing speed；It is added crosslinking agent thereto afterwards, is stirred with 800 revs/min at 40 DEG C
It mixes speed to stir 20 minutes, is prepared into ion liquid microemulsion；It is added and draws into above-mentioned ion liquid microemulsion system at room temperature
Agent is sent out, is stirred 50 minutes with 600 revs/min of speed；Mixture is transferred to autoclave, 8h is reacted under the conditions of 80 DEG C, prepares
High-performance poly ion liquid adsorbent.
Embodiment 3：
Claim raw material by following parts by weight：17.2 parts of ionic liquid A [ABIm] Cl, ionic liquid B [AMIm] PF627.6
Part, bis- (2- ethylhexyls) Disodium sulfosuccinates ([C16min] [AOT]) of surfactant 1- cetyl -3- methylimidazoles
35.8 parts, 20 parts of cosurfactant isopropanol, crosslinking agent 3,3'- dithiodipropionic acids two (N- hydroxysuccinimides) ester
7.6 parts, 1.5 parts of initiator azobisisoheptonitrile.
Above-mentioned ionic liquid A, ionic liquid B are mixed, stirred 80 minutes with 800 revs/min of mixing speed at 30 DEG C,
It is prepared into mixed ionic liquid；Surfactant and cosurfactant are added in mixed ionic liquid at room temperature, 30 DEG C
Under stirred 30 minutes with 800 revs/min of mixing speed；It is added crosslinking agent thereto afterwards, is stirred with 800 revs/min at 30 DEG C
It mixes speed to stir 40 minutes, is prepared into ion liquid microemulsion；Initiator is added into ion liquid microemulsion system at room temperature,
It is stirred 60 minutes with 800 revs/min of speed；Mixture is transferred to autoclave, 120 DEG C of conditioned response 12h prepare high-performance
Poly ion liquid adsorbent.
Embodiment 4：
Claim raw material by following parts by weight：9.5 parts of ionic liquid A [AMIm] Cl, 8.2 parts of [ABIm] Cl, ionic liquid B
[AEIm]PF616.4 parts, [ABIm] PF616.6 parts, 20.2 parts of surfactant octyl phenyl polyoxyethylene ether (TX-100), ten
19.8 parts of six alkyl trimethyl ammonium bromides (CTAB), 6.6 parts of cosurfactant n-amyl alcohol, 7.4 parts of n-octyl alcohol, the poly- second of crosslinking agent
8.4 parts of omega-diol diacrylate, 1.2 parts of initiator azobisisoheptonitrile.
Above-mentioned ionic liquid A, ionic liquid B are mixed, 10 points are stirred with 1200 revs/min of mixing speed at 50 DEG C
Clock is prepared into mixed ionic liquid；Surfactant and cosurfactant are added in mixed ionic liquid at room temperature, 50
It is stirred 20 minutes with 600 revs/min of mixing speed at DEG C；Crosslinking agent is added thereto afterwards, with 1200 revs/min at 50 DEG C
Mixing speed stirs 10 minutes, is prepared into ion liquid microemulsion；It is added at room temperature into above-mentioned ion liquid microemulsion system
Initiator is stirred 60 minutes with 500 revs/min of speed；Mixture is transferred to autoclave, 16h is reacted under the conditions of 100 DEG C, is made
It is standby go out high-performance poly ion liquid adsorbent.
Embodiment 5：
Claim raw material by following parts by weight：9.8 parts of ionic liquid A [AEIm] Cl, 12.3 parts of [ABIm] Cl, ionic liquid
B[AMIm]PF612.6 parts, [ABIm] PF613.5 parts, 16.3 parts of surfactant cetyl trimethylammonium bromide (CTAB), 1-
Bis- 15.3 parts of (2- ethylhexyls) Disodium sulfosuccinates ([C16min] [AOT]) of cetyl -3- methylimidazoles, help surface to live
8.9 parts of property agent n-butanol, 7.4 parts of isopropanol, 6.2 parts of crosslinking agent polyethyleneglycol diacrylate, 3,3'- dithiodipropionic acids two
0.8 part of (N- hydroxysuccinimides) ester, initiator 2,0.4 part of 2- azodiisobutyronitriles, azo-bis-iso-dimethyl 0.6
Part.
Above-mentioned ionic liquid A, ionic liquid B are mixed, stirred 30 minutes with 400 revs/min of mixing speed at 80 DEG C,
It is prepared into mixed ionic liquid；Surfactant and cosurfactant are added in mixed ionic liquid at room temperature, 80 DEG C
Under stirred 20 minutes with 400 revs/min of mixing speed；It is added crosslinking agent thereto afterwards, is stirred with 400 revs/min at 80 DEG C
It mixes speed to stir 20 minutes, is prepared into ion liquid microemulsion；Add at room temperature into above-mentioned novel ion liquid microemulsion system
Enter initiator, is stirred 120 minutes with 400 revs/min of speed；Mixture is transferred to autoclave, reacts 20h under the conditions of 100 DEG C,
Prepare high-performance poly ion liquid adsorbent.
Embodiment 6：
Claim raw material by following parts by weight：9.8 parts of ionic liquid A [AEIm] Cl, 11.4 parts of [AMIm] Cl, ionic liquid
B[AMIm]PF611.9 parts, [AEIm] PF612.1 parts, 16.0 parts of surfactant octyl phenyl polyoxyethylene ether (TX-100),
Bis- 13.1 parts of (2- ethylhexyls) Disodium sulfosuccinates ([C16min] [AOT]) of 1- cetyl -3- methylimidazoles, help surface
10.1 parts of activating agent n-amyl alcohol, 9.9 parts of isopropanol, 2.2 parts of crosslinking agent ethylene glycol dimethacrylate, 3,3'- bis- thio two
2.5 parts of propionic acid two (N- hydroxysuccinimides) ester, 0.3 part of initiator azo-bis-iso-dimethyl, azobisisoheptonitrile 1.2
Part.
Above-mentioned ionic liquid A, ionic liquid B are mixed, stirred 30 minutes with 500 revs/min of mixing speed at 70 DEG C, system
For at mixed ionic liquid；Surfactant and cosurfactant are added in mixed ionic liquid at room temperature, at 70 DEG C
It is stirred 20 minutes with 500 revs/min of mixing speed；Crosslinking agent is added thereto afterwards, with 500 revs/min of stirring at 70 DEG C
Speed stirs 20 minutes, is prepared into ion liquid microemulsion；It is added and causes into above-mentioned ion liquid microemulsion system at room temperature
Agent is stirred 20 minutes with 500 revs/min of speed；Mixture is transferred to autoclave, reacts for 24 hours, prepares under the conditions of 100 DEG C
High-performance poly ion liquid adsorbent.
In order to prove the technique effect of poly ion liquid adsorbent provided by the invention, we will be obtained by Examples 1 to 6
Adsorbent is applied to the adsorption experiment of zinc ion in water, and specific operation process is as follows：
Use instrument：Atomic absorption spectrophotometer.A series of known concentrations are prepared first and there is concentration gradient
ZnCl2Standard aqueous solution, using the absorbance of atomic absorption spectrophotometer testing standard solution, with a concentration of of standard solution
Abscissa does standard curve by ordinate of absorbance, prepares the ZnCl of 0.01mol/L later2Aqueous solution, dilution 500 is extraordinarily
Enter to 25mL colorimetric cylinders, tests to obtain actual concentrations numerical value C0, take the ZnCl of 25mL 0.01mol/L2Aqueous solution is in 100mL conical flasks
It is interior, m grams of this adsorbent is added, under conditions of being vibrated with 134 revs/min for 20. DEG C, vibrates 8h.Filtering, takes clarified solution, dilutes
25mL colorimetric cylinders are added to after 500 times.By test, a concentration of C after absorptione, the calculation formula of adsorption capacity is e=V (C0-
Ce)x500/m.Adsorbent is as shown in table 1 to the adsorption effect of zinc ion in water obtained by Examples 1 to 6.
Adsorption effect of the adsorbent to zinc ion in water obtained by 1 Examples 1 to 6 of table
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of poly ion liquid adsorbent towards zinc ion in water body, which is characterized in that by weight, raw material proportioning is such as
Under：
The ionic liquid A is 1- allyl -3- methylimidazole villaumites, 1- allyl -3- ethyl imidazol(e)s villaumite, 1- allyls -
The compounding of one or both of 3- butyl imidazole villaumites or more, the ionic liquid B are 1- allyl -3- methylimidazoles six
One kind in fluorophosphate, 1- alkene hexyl -3- methylimidazoles hexafluorophosphate, 1- alkene octyl -3- butyl imidazole hexafluorophosphates
Or two kinds or more of compounding.
2. poly ion liquid adsorbent according to claim 1, which is characterized in that the crosslinking agent is polyethylene glycol dipropyl
Olefin(e) acid ester, ethylene glycol dimethacrylate, one kind in 3,3'- dithiodipropionic acids two (N- hydroxysuccinimides) ester or
Two kinds or more of compounding.
3. poly ion liquid adsorbent according to claim 1, which is characterized in that the initiator is that 2,2- azos two are different
The compounding of one or both of butyronitrile, azobisisoheptonitrile, azo-bis-iso-dimethyl or more.
4. poly ion liquid adsorbent according to claim 1, which is characterized in that the surfactant is octyl phenyl
Bis- (2- ethylhexyls) the succinate sulphurs of polyoxyethylene ether, cetyl trimethylammonium bromide, 1- cetyl -3- methylimidazoles
The compounding of one or both of sour sodium or more.
5. poly ion liquid adsorbent according to claim 1, which is characterized in that the cosurfactant is isopropyl
The compounding of one or both of alcohol, n-butanol, n-amyl alcohol, n-octyl alcohol or more.
6. the preparation method of poly ion liquid adsorbent according to any one of claims 1 to 5, which is characterized in that including such as
Lower step：
1) ionic liquid A and ionic liquid B are weighed by weight, is stirred evenly under the conditions of 30~80 DEG C, and hybrid ionic is made
Liquid；
2) surfactant of corresponding parts by weight and cosurfactant are added in the mixed ionic liquid obtained by step 1),
It is stirred evenly under the conditions of 30~80 DEG C；
3) crosslinking agent of corresponding parts by weight is added into the product obtained by step 2), stirs evenly, obtains under the conditions of 30~80 DEG C
Ion liquid microemulsion；
4) initiator of corresponding parts by weight at room temperature, is added into the ion liquid microemulsion obtained by step 3), stirs evenly, after
Mixture is transferred in reactor, in 80~120 DEG C react 4~for 24 hours to get poly ion liquid adsorbent.
7. preparation method according to claim 6, which is characterized in that the rotating speed of step 1) to whipping process in 4) is 300
~1200rpm, mixing time are 10~120min.
8. poly ion liquid adsorbent according to any one of claims 1 to 5 is in Heavy Metals in Waters ionic adsorption field
Using.
9. application according to claim 8, which is characterized in that the heavy metal ion refers to zinc ion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810359863.6A CN108394953B (en) | 2018-04-20 | 2018-04-20 | Polyion liquid adsorbent for zinc ions in water body and preparation method and application thereof |
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| CN201810359863.6A CN108394953B (en) | 2018-04-20 | 2018-04-20 | Polyion liquid adsorbent for zinc ions in water body and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371782A (en) * | 2021-06-19 | 2021-09-10 | 昆明理工大学 | Material for filtering leaching solution in phosphogypsum slag yard |
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| US20140246370A1 (en) * | 2011-08-01 | 2014-09-04 | Helmholtz-Zentrum Dresden - Rossendorf E.V. | Extraction of noble metal (ions) by means of ionic liquids |
| CN106215907A (en) * | 2016-08-22 | 2016-12-14 | 鲁东大学 | A kind of magnetic cellulose base poly ion liquid type adsorbent and preparation method thereof |
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| US20140246370A1 (en) * | 2011-08-01 | 2014-09-04 | Helmholtz-Zentrum Dresden - Rossendorf E.V. | Extraction of noble metal (ions) by means of ionic liquids |
| CN106215907A (en) * | 2016-08-22 | 2016-12-14 | 鲁东大学 | A kind of magnetic cellulose base poly ion liquid type adsorbent and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371782A (en) * | 2021-06-19 | 2021-09-10 | 昆明理工大学 | Material for filtering leaching solution in phosphogypsum slag yard |
| CN113371782B (en) * | 2021-06-19 | 2022-05-31 | 昆明理工大学 | Material for filtering leaching solution in phosphogypsum slag yard |
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Denomination of invention: A polyionic liquid adsorbent for zinc ion in water and its preparation method and Application Effective date of registration: 20211216 Granted publication date: 20210727 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: LUDONG University Registration number: Y2021980015152 |
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Date of cancellation: 20220317 Granted publication date: 20210727 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: LUDONG University Registration number: Y2021980015152 |