CN102205232A - Development of larch tannin metal ion absorbing agent - Google Patents
Development of larch tannin metal ion absorbing agent Download PDFInfo
- Publication number
- CN102205232A CN102205232A CN 201110072583 CN201110072583A CN102205232A CN 102205232 A CN102205232 A CN 102205232A CN 201110072583 CN201110072583 CN 201110072583 CN 201110072583 A CN201110072583 A CN 201110072583A CN 102205232 A CN102205232 A CN 102205232A
- Authority
- CN
- China
- Prior art keywords
- metal ion
- larch tannin
- preparation
- larch
- ion adsorbent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a preparation method of a larch tannin metal ion absorbing agent, relating to a preparation method of a larch tannin metal ion absorbing agent synthesized by adopting a self-assembly grafting polymerization technology. The larch tannin metal ion absorbing agent is synthesized by using larch tannin as a raw material, N,N'-methylenebisacrylamide (NMBA) as a crosslinking agent and potassium peroxydisulfate as an initiating agent through a self-assembly grafting polymerization technology. The preparation method comprises the steps of: firstly, adding an alkali solution of the larch tannin in a reactor, heating in water bath and introducing nitrogen, stirring; dropwise adding uniformly-stirred initiating agent, crosslinking agent, crylic acid and acrylamide solution into the reactor for polymerization, and carrying out insulation, cooling and vacuum drying to obtain the larch tannin metal ion absorbing agent. The larch tannin metal ion absorbing agent prepared by adopting the method has the maximum removal rate of 86.1252 percent to Cr<6+> with initial mass concentration of 2mu.g/ml, the maximum absorption capacity of 0.015597mmol/g, the pH value of 3-13, and a better removal effect to the Cr<6+>. The larch tannin metal ion absorbing agent has a wider application range to the environment, is a novel efficient and environmental-friendly heavy metal ion absorbing agent, and is suitable for absorption separation and purification treatment of heavy metal ion wastewater.
Description
Technical field
The present invention relates to a kind of metal absorbent and preparation method thereof, belong to the chemosorbent field, particularly a kind of is that raw material separates adsorbent that reclaims precious metal and preparation method thereof simultaneously by the synthetic absorbing heavy metal ions in water that is used for of self assembly graft polymerization technique with the larch tannin.
Background technology
Metal ion adsorbent is a kind of adsorbent of natural polymer efficiently, both heavy metal ion has been had and has removed performance efficiently, and is biodegradable again, is a kind of new and effective environmentally friendly adsorbent for heavy metal.Along with the aggravation of world's water resources crisis, water scarcity has become the bottleneck of serious restriction Chinese national economy sustainable development, and one of main pollution type that heavy metal pollution is the many regional water sources of China is born.Because heavy metal ion is difficult to natural degradation and destruction, when its concentration surpasses certain limit, will cause great harm to environment, especially some heavy metal ion can accumulate enrichment in aquatile and crops tissue, by food chain the mankind are caused very serious harm, so it is effectively administered, recycles and be subjected to extensive attention.And because the special construction of larch tannin molecule, it has shown the huge applications prospect as new adsorbent.
In the conventional process water there be the method for heavy metal ion: charcoal absorption, the precipitation method, ion exchange resin, hyperfiltration etc., but these method ubiquity prices are expensive, adsorption time long, easily produce secondary pollution problems.Therefore,, seek and prepare natural polymer adsorbent efficiently, and be used for the separation recovery of precious metal, will become the important directions of natural polymer development at dissimilar effluent containing heavy metal ions.The research of having carried out at present mainly concentrates on lignin, chitin, starch, tannin and the derivative thereof.
Larch tannin belongs to condensed tannin, is hydroxyl flavanol compound monomer with the carbon-carbon bond compound that condensation forms that links, and most important component units is flavan-3-alcohol and former cyanidin, number-average molecular weight about 2800.A plurality of ortho positions phenolic hydroxyl group is arranged in the larch tannin molecule, can be used as multidentate ligand and a central ion,, form the chelate of ring-type, under different pH values, precipitate as lead, tin, bismuth, zinc, mercury, iron, copper, chromium complexing.Formed chelate generally has color.As the application of this character, the research emphasis of tannin-metal reaction is many at present at complexing tanning agent and dyestuff, metal rust-proofing coating, aspects such as water treatment agent and agricultural chemicals.Utilize larch tannin to prepare metal ion adsorbent following advantage is arranged: (1) raw material sources are abundant, nontoxic, more cheap than petroleum product price; (2) product environmentally safe can biodegradation; (3) hydroxyl in the chemical constitution of larch tannin can carry out the number of chemical modification, but also graft polymerization reaction directly takes place in hydrophilic monomer; (4) with the raw material of the product after the larch tannin chemical modification, can give metal ion adsorbent multiple performance as synthetic metal ion adsorbent.Though at present the type to the experimental study product of condensed tannin is a lot, study not deep enoughly, the laboratory research stage is still located in great majority research, and still the commercial-free product comes out, and the research of relevant larch tannin is reported seldom.So developing low-cost, salt tolerant, adsorbent for heavy metal strong to adaptive capacity to environment, that the life-span is long are the metal ion adsorbent hot of research and development.
In view of metal ion pollution present situation in present China water body and to the demand of the friendly high-efficiency adsorbent of novel environmental, in conjunction with the advantage of larch tannin special chemical structure as adsorbent, the present invention arrives cross-linked network structure or skeleton by the various functional groups of grafting on the larch tannin, produce new functional group on the larch tannin surface, increase the density of absorption position, improve adsorption capacity and the adsorptive selectivity of larch tannin metal ion.
Summary of the invention
The invention provides a kind of preparation method of larch tannin metal ion adsorbent, with separation recovery and metal ion adsorbent environment narrow application range, the problems such as water absorbent rate is low, salt tolerance is poor, the repeated use number of times is few, degraded difficulty that solve heavy metal ion in the present water body.And be that the adsorbent that raw material makes can adsorb multiple metal ion with the larch tannin.
The objective of the invention is to be achieved through the following technical solutions:
One, larch tannin is dissolved in a certain amount of sodium hydroxide solution, obtains the larch tannin aqueous slkali of certain degree of neutralization; Two, the aqueous slkali with larch tannin places reactor, water-bath heating under the uniform temperature, stirring and feeding nitrogen; Three, respectively acrylic acid, acrylamide and initator and crosslinking agent are obtained monomer and initator and cross-linking agent solution system with deionized water dissolving; Four, under nitrogen protection, monomer and initator and cross-linking agent solution system slowly are added drop-wise to carry out polymerisation 1h～2h in the reactor respectively; Five, observe solution when begin to become sticky thick, the system color, state, the colloid that forms by the time stirs on the stirring rod when rotating with stirring rod, stops to stir, and begins insulation, take out behind 30min～60min, 40 ℃ of oven dry, constant weight promptly obtains bulk product; Promptly obtain the preparation method of larch tannin metal ion adsorbent.
It is 50%～90% that the consumption of the alkali of control described in the step 1 makes degree of neutralization, and the mass ratio between larch tannin and the monomer total amount is 0.50: 20～4: 20; Bath temperature described in the step 2 is controlled at 40 ℃～90 ℃; The mass ratio of described acrylic acid of step 3 and acrylamide is 10: 1～1: 12, the initator that is adopted is a potassium peroxydisulfate, wherein the weight of potassium peroxydisulfate accounts for 1.0%～4.0% of larch tannin and monomer gross mass, the crosslinking agent that adopts is N, N-methylene-bisacrylamide, quality are 0.1%～3.0% of larch tannin and monomer gross mass.
The present invention adopts self assembly glycerol polymerization legal system to be equipped with metal ion adsorbent, the metal ion adsorbent that makes can reach 63.0934g/g to the water absorbent rate of running water, water absorbent rate to distilled water can reach 65.4440g/g, can reach 19.7757g/g to the water absorbent rate of physiological saline, to Cr
6+Clearance can reach 91.5137%, and in environment pH value 3～13 scopes, all can keep soaking effect preferably, and the mechanical strength after the resin suction is bigger, be difficult for running off, be convenient to reuse.
The building-up process that the present invention prepares metal ion adsorbent is simple, and the adsorbent shape is easily controlled; The adsorbent water absorbent rate is higher, and clearance is higher, and salt tolerant is effective, and is to environment pH scope of application broad, reusable; Resin is under action of microorganisms, but the natural biology degraded, environmentally safe.
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
Embodiment 1:
The preparation method of larch tannin metal ion adsorbent in the present embodiment, what its preparation method adopted is self assembly glycerol polymerization method, specifically undertaken: one, larch tannin is dissolved in a certain amount of sodium hydroxide solution, obtains the larch tannin aqueous slkali of certain degree of neutralization by following step; Two, the aqueous slkali with larch tannin places reactor, water-bath heating under the uniform temperature, stirring and feeding nitrogen; Three, respectively acrylic acid, acrylamide and initator and crosslinking agent are obtained monomer, initator and cross-linking agent solution system with deionized water dissolving; Four, under nitrogen protection, monomer, initator and cross-linking agent solution system slowly are added drop-wise to carry out polymerisation 1h～2h in the reactor respectively; Five, observe solution when begin to become sticky thick, the system color, state, the colloid that forms by the time stirs on the stirring rod when rotating with stirring rod, stops to stir, and begins insulation, take out behind 30min～60min, 40 ℃ of oven dry, constant weight promptly obtains bulk product.
Mass ratio between larch tannin described in the step 1 and the monomer total amount is 0.50: 20～4: 20; The step 2 bath temperature is controlled at 40 ℃～90 ℃; The mass ratio of described acrylic acid of step 3 and acrylamide is 10: 1～1: 12, and the initator that is adopted is a potassium peroxydisulfate, and the crosslinking agent of employing is N, the N-methylene-bisacrylamide.
Embodiment 2:
The 2.00g larch tannin is dissolved in the sodium hydroxide solution of 1.67g, obtains the aqueous slkali of larch tannin, it is 75% that the consumption of control alkali makes acrylic acid degree of neutralization; The aqueous slkali of larch tannin is placed reactor, add the 17mL deionized water, water-bath heating under 64 ℃ of temperature, stirring and feeding nitrogen; 4.00g acrylic acid, 4.00g acrylamide stirred with the 2mL deionized water dissolving obtain monomer system solution; Take by weighing the 0.10g potassium peroxydisulfate, stirring with the 4mL deionized water dissolving obtains the initiator solution system; Take by weighing the N of 0.10g, the N-methylene-bisacrylamide, stirring with the 2mL deionized water dissolving obtains the cross-linking agent solution system; Under nitrogen protection, monomer and cross-linking agent solution system and initiator solution system slowly are added drop-wise to carry out polymerisation 1.5h in the reactor respectively; Continue insulation 30min and take out, obtain viscoelastic colloidal, get bulk product, constant weight after 40 ℃ of following vacuum drying.This product is the Cr of 1 μ g/mL to concentration
6+Solution absorption Cr
6+Capacity is 0.007164mmol/g, and clearance is 83.3611%.
Embodiment 3:
The 2.00g larch tannin is dissolved in the sodium hydroxide solution of 1.11g, obtains the aqueous slkali of larch tannin, it is 50% that the consumption of control alkali makes acrylic acid degree of neutralization; The aqueous slkali of larch tannin is placed reactor, add the 17mL deionized water, water-bath heating under 64 ℃ of temperature, stirring and feeding nitrogen; 4.00g acrylic acid, 4.00g acrylamide stirred with the 2mL deionized water dissolving obtain monomer system solution; Take by weighing the 0.10g potassium peroxydisulfate, stirring with the 4mL deionized water dissolving obtains the initiator solution system; Take by weighing the N of 0.20g, the N-methylene-bisacrylamide, stirring with the 2mL deionized water dissolving obtains the cross-linking agent solution system; Under nitrogen protection, monomer and cross-linking agent solution system and initiator solution system slowly are added drop-wise to carry out polymerisation 2h in the reactor respectively; Continue insulation 30min and take out, obtain viscoelastic colloidal, get bulk product, constant weight after 40 ℃ of following vacuum drying.This product is the Cr of 1 μ g/mL to concentration
6+Solution absorption Cr
6+Capacity is 0.007818mmol/g, and clearance is 85.6112%.
Embodiment 4:
The 0.50g larch tannin is dissolved in the sodium hydroxide solution of 2.08g, obtains the aqueous slkali of larch tannin, it is 75% that the consumption of control alkali makes acrylic acid degree of neutralization; The aqueous slkali of larch tannin is placed reactor, add the 17mL deionized water, water-bath heating under 64 ℃ of temperature, stirring and feeding nitrogen; 5.00g acrylic acid, 3.00g acrylamide stirred with the 2mL deionized water dissolving obtain monomer system solution; Take by weighing 0.19g potassium peroxydisulfate and 0.17g ammonium ceric nitrate, stirring with the 4mL deionized water dissolving obtains the initiator solution system; Take by weighing the N of 0.10g, the N-methylene-bisacrylamide, stirring with the 2mL deionized water dissolving obtains the cross-linking agent solution system; Under nitrogen protection, monomer and cross-linking agent solution system and initiator solution system slowly are added drop-wise to carry out polymerisation 1.5h in the reactor respectively; Continue insulation 30min and take out, obtain viscoelastic colloidal, get bulk product, constant weight after 40 ℃ of following vacuum drying.This product is the Cr of 1 μ g/mL to concentration
6+Solution absorption Cr
6+Capacity is 0.006846mmol/g, and clearance is 74.8987%.
Embodiment 5:
The 0.50g larch tannin is dissolved in the sodium hydroxide solution of 2.08g, obtains the aqueous slkali of larch tannin, it is 75% that the consumption of control alkali makes acrylic acid degree of neutralization; The aqueous slkali of larch tannin is placed reactor, add the 17mL deionized water, water-bath heating under 56 ℃ of temperature, stirring and feeding nitrogen; 5.00g acrylic acid, 3.00g acrylamide stirred with the 2mL deionized water dissolving obtain monomer system solution; Take by weighing 0.19g potassium peroxydisulfate and 0.17g ammonium ceric nitrate, stirring with the 4mL deionized water dissolving obtains the initiator solution system; Take by weighing the N of 0.10g, the N-methylene-bisacrylamide, stirring with the 2mL deionized water dissolving obtains the cross-linking agent solution system; Under nitrogen protection, monomer and cross-linking agent solution system and initiator solution system slowly are added drop-wise to carry out polymerisation 2h in the reactor respectively; Continue insulation 30min and take out, obtain viscoelastic colloidal, get bulk product, constant weight after 40 ℃ of following vacuum drying.This product is the Cr of 1 μ g/mL to concentration
6+Solution absorption Cr
6+Capacity is 0.006921mmol/g, and clearance is 82.9852%.
Claims (11)
1. the preparation method of a larch tannin metal ion adsorbent, what its preparation method adopted is self assembly glycerol polymerization method, concrete steps are as follows: one, larch tannin is dissolved in a certain amount of sodium hydroxide solution, obtains having the larch tannin aqueous slkali of certain degree of neutralization; Two, the aqueous slkali with larch tannin places reactor, and water-bath is heated to uniform temperature, stirring and feeds nitrogen; Three, respectively acrylic acid, acrylamide and initator and crosslinking agent are obtained monomer and initator and cross-linking agent solution system with deionized water dissolving; Four, under nitrogen protection, respectively monomer, initator and cross-linking agent solution system slowly are added drop-wise in the reactor, carry out polymerisation 1h～2h; When five, the colloid that forms in the question response device stirs on the stirring rod and to rotate with stirring rod, stop to stir, take out behind insulation 30min～60min, 40 ℃ of oven dry subtract the broken bulk product that obtains; Promptly obtain the preparation method of larch tannin metal ion adsorbent.
2. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1, it is 50%～90% that the consumption that it is characterized in that described in the step 1 control alkali makes degree of neutralization.
3. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1 is characterized in that the mass ratio between larch tannin described in the step 1 and the monomer (being acrylamide and acrylic acid summation) is 0.50: 20～4: 20.
4. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1 is characterized in that water bath heating temperature described in the step 2 is controlled at 40 ℃～90 ℃.
5. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1 is characterized in that acrylamide described in the step 3 and acrylic acid mass ratio are 10: 1～1: 12.
6. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1, the initator that it is characterized in that in the step 3 being adopted is a potassium peroxydisulfate, initiator amount be potassium peroxydisulfate account for larch tannin and monomer (being acrylamide and acrylic acid summation) gross mass 1.0%～4.0%.
7. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1, the crosslinking agent that it is characterized in that in the step 3 being adopted is N, N-methylene-bisacrylamide, dosage of crosslinking agent are 0.1%～3.0% of larch tannin and monomer (being acrylamide and acrylic acid summation) gross mass.
8. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1 after it is characterized in that dripping monomer system 0.5h earlier in the step 4 in reactor, drips initator and system crosslinking agent system again.
9. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1 is characterized in that the described monomer system rate of addition of step 4 is 2～3mL/min.
10. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1 is characterized in that the described initiator system rate of addition of step 4 is 2～3mL/min.
11. the preparation method of a kind of larch tannin metal ion adsorbent according to claim 1 is characterized in that the described crosslinking agent system of step 4 rate of addition is 2～3mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110072583 CN102205232A (en) | 2011-03-25 | 2011-03-25 | Development of larch tannin metal ion absorbing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110072583 CN102205232A (en) | 2011-03-25 | 2011-03-25 | Development of larch tannin metal ion absorbing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102205232A true CN102205232A (en) | 2011-10-05 |
Family
ID=44694464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110072583 Pending CN102205232A (en) | 2011-03-25 | 2011-03-25 | Development of larch tannin metal ion absorbing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102205232A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407097A (en) * | 2011-10-31 | 2012-04-11 | 广西大学 | Preparation method of hemicellulose-based heavy metal ion adsorbent |
| CN102600807A (en) * | 2012-04-20 | 2012-07-25 | 桂林奥尼斯特节能环保科技有限责任公司 | Adsorption material capable of adsorbing heavy metals by using modified silk, and preparation method of adsorption material |
| EP2742996A1 (en) | 2012-12-17 | 2014-06-18 | Latvijas Universitate | Sorbents and method for synthesis of sorbents intended for removal of radionuclides and toxic trace elements from water |
| CN104525154A (en) * | 2014-12-23 | 2015-04-22 | 四川大学 | Method for preparing Cr(III) absorbent material by taking waste chrome-containing leather meal as raw material |
| CN105327683A (en) * | 2015-11-11 | 2016-02-17 | 欧一鸿 | Carbon nanotube printing and dyeing wastewater treatment complexing agent based on SiO<2>/TiO<2> mesoporous composite microsphere carrier and preparation method |
| CN111085180A (en) * | 2019-12-12 | 2020-05-01 | 贵州师范学院 | Preparation of tannic acid based chelating adsorption resin and application of tannic acid based chelating adsorption resin in Cr (VI) adsorption |
| CN112842983A (en) * | 2021-03-11 | 2021-05-28 | 福州东艺善秀商业有限公司 | Herbal emulsion for sensitive muscle repair and preparation method thereof |
| CN115215829A (en) * | 2022-08-12 | 2022-10-21 | 西南科技大学 | Preparation method of green plant tannin type nuclide detersive surfactant |
| CN115321695A (en) * | 2022-08-23 | 2022-11-11 | 浙江碧源环保科技有限公司 | Coagulation-aiding decoloration softening agent and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5641542A (en) * | 1995-10-11 | 1997-06-24 | Betzdearborn Inc. | Chromium-free aluminum treatment |
| CN1517443A (en) * | 2003-01-13 | 2004-08-04 | ���ɿ��ɷ�����˾ | Method for preparing modified plant tannin extract, produced product and its application |
| CN101096395A (en) * | 2007-06-28 | 2008-01-02 | 武汉理工大学 | Method for synthesizing persimmon tannin-crylic acid series macromolecule bibulous resin |
| CN101610983A (en) * | 2006-12-22 | 2009-12-23 | 通用电气公司 | Polymeric coagulants composition and using method based on tannin |
| CN101649361A (en) * | 2009-08-27 | 2010-02-17 | 陕西科技大学 | Method for preparing tannin modified vinyl class polymer tanning agent |
-
2011
- 2011-03-25 CN CN 201110072583 patent/CN102205232A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5641542A (en) * | 1995-10-11 | 1997-06-24 | Betzdearborn Inc. | Chromium-free aluminum treatment |
| CN1517443A (en) * | 2003-01-13 | 2004-08-04 | ���ɿ��ɷ�����˾ | Method for preparing modified plant tannin extract, produced product and its application |
| CN101610983A (en) * | 2006-12-22 | 2009-12-23 | 通用电气公司 | Polymeric coagulants composition and using method based on tannin |
| CN101096395A (en) * | 2007-06-28 | 2008-01-02 | 武汉理工大学 | Method for synthesizing persimmon tannin-crylic acid series macromolecule bibulous resin |
| CN101649361A (en) * | 2009-08-27 | 2010-02-17 | 陕西科技大学 | Method for preparing tannin modified vinyl class polymer tanning agent |
Non-Patent Citations (1)
| Title |
|---|
| 《中国化工学会（IESC）2006年年会》 20061231 谢建军等 聚丙烯酸/丙烯酰胺高吸水性树脂吸附性能研究 第533-539页 1-11 , * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407097A (en) * | 2011-10-31 | 2012-04-11 | 广西大学 | Preparation method of hemicellulose-based heavy metal ion adsorbent |
| CN102600807A (en) * | 2012-04-20 | 2012-07-25 | 桂林奥尼斯特节能环保科技有限责任公司 | Adsorption material capable of adsorbing heavy metals by using modified silk, and preparation method of adsorption material |
| EP2742996A1 (en) | 2012-12-17 | 2014-06-18 | Latvijas Universitate | Sorbents and method for synthesis of sorbents intended for removal of radionuclides and toxic trace elements from water |
| CN104525154A (en) * | 2014-12-23 | 2015-04-22 | 四川大学 | Method for preparing Cr(III) absorbent material by taking waste chrome-containing leather meal as raw material |
| CN104525154B (en) * | 2014-12-23 | 2016-06-15 | 四川大学 | A kind of method preparing Cr (III) adsorbing material for raw material with discarded chrome leather scrap |
| CN105327683A (en) * | 2015-11-11 | 2016-02-17 | 欧一鸿 | Carbon nanotube printing and dyeing wastewater treatment complexing agent based on SiO<2>/TiO<2> mesoporous composite microsphere carrier and preparation method |
| CN111085180A (en) * | 2019-12-12 | 2020-05-01 | 贵州师范学院 | Preparation of tannic acid based chelating adsorption resin and application of tannic acid based chelating adsorption resin in Cr (VI) adsorption |
| CN111085180B (en) * | 2019-12-12 | 2022-07-05 | 贵州师范学院 | Preparation of tannic acid based chelating adsorption resin and application of tannic acid based chelating adsorption resin in Cr (VI) adsorption |
| CN112842983A (en) * | 2021-03-11 | 2021-05-28 | 福州东艺善秀商业有限公司 | Herbal emulsion for sensitive muscle repair and preparation method thereof |
| CN115215829A (en) * | 2022-08-12 | 2022-10-21 | 西南科技大学 | Preparation method of green plant tannin type nuclide detersive surfactant |
| CN115215829B (en) * | 2022-08-12 | 2023-07-25 | 西南科技大学 | Preparation method of green plant tannin type nuclide detersive surfactant |
| CN115321695A (en) * | 2022-08-23 | 2022-11-11 | 浙江碧源环保科技有限公司 | Coagulation-aiding decoloration softening agent and preparation method and application thereof |
| CN115321695B (en) * | 2022-08-23 | 2024-07-12 | 浙江碧源环保科技有限公司 | Coagulation-aiding decoloration softener and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102205232A (en) | Development of larch tannin metal ion absorbing agent | |
| Alver et al. | Chitosan based metal-chelated copolymer nanoparticles: laccase immobilization and phenol degradation studies | |
| Abdel-Halim et al. | Hydrogel from crosslinked polyacrylamide/guar gum graft copolymer for sorption of hexavalent chromium ion | |
| CN103497278B (en) | Amphoteric cellulose material and application thereof | |
| Huang et al. | Equilibrium and kinetics studies on the absorption of Cu (II) from the aqueous phase using a β-cyclodextrin-based adsorbent | |
| CN108298629A (en) | A kind of preparation method of the composite material of efficient absorption mercury ion | |
| CN104562632B (en) | A kind of microwave quickly modified Corchorus olitorius L. prepares method and the application of heavy metal ion exchange fiber | |
| Sutirman et al. | Chitosan-based adsorbents for the removal of metal ions from aqueous solutions | |
| CN105384263B (en) | Sulfamic acid modification of chitosan water antisludging agent and preparation method thereof | |
| CN103992446A (en) | Method for preparing heavy metal ion adsorption materials of crop straws | |
| CN104607157A (en) | Method for preparing heavy metal complexing fiber by quickly modified jute through microwaves and application of fiber | |
| CN105107471A (en) | Sulphydryl lignocellulose/montmorillonite composite heavy metal ion adsorbent and preparation and application thereof | |
| CN103613709B (en) | With yam starch xanthate for the resin dedicated method of Material synthesis Adsorption of Heavy Metal Ions | |
| CN107824167B (en) | Antibacterial high-molecular uranium extraction material and preparation method thereof | |
| CN103044636B (en) | Preparation method of enzymatically hydrolyzed sericin protein composite absorbent material | |
| CN101768866B (en) | Macromolecular microballoon sphere silver-carrying antibiotic finishing agent and preparation method thereof | |
| CN103936146A (en) | Preparation method and application of quinonoid compound modified nylon membrane biological carrier | |
| CN102504292A (en) | Organic cross linking system for polymer flooding and preparation method of cross linking agent | |
| CN102241801B (en) | Acrylic acid(AA)/sodium 2-acrylamide-2-methylpro panesulfonic acid(AMPS-Na)/diisocyanate-modified allyl cyclodextrin (MACD) copolymer | |
| Feng et al. | Synthesis of a chitosan-based flocculant CS-gP (AM-IA-AATPAC) and evaluation of its performance on Ni2+ removal: Role of chelating-coordination and flocculation | |
| CN109734839B (en) | High-anticoagulation polystyrene microsphere and preparation method and application thereof | |
| CN107780198A (en) | The method that microwave radiation technology prepares chelate fibre | |
| CN102153709B (en) | Tannin extract grafting copolymerization cationic flocculant | |
| CN107837789B (en) | Friedel-crafts alkylated lignosulfonate adsorbent and preparation method and application thereof | |
| CN105797695B (en) | A kind of preparation method of novel graphite alkene compound ion exchange fiber aeroge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111005 |