CN100522347C - 2, 4-diaminobenzenesulfonate polymerization modification polymer materials -PAN Hg ion sorbent and the preparing method - Google Patents
2, 4-diaminobenzenesulfonate polymerization modification polymer materials -PAN Hg ion sorbent and the preparing method Download PDFInfo
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- CN100522347C CN100522347C CNB2007100401810A CN200710040181A CN100522347C CN 100522347 C CN100522347 C CN 100522347C CN B2007100401810 A CNB2007100401810 A CN B2007100401810A CN 200710040181 A CN200710040181 A CN 200710040181A CN 100522347 C CN100522347 C CN 100522347C
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Abstract
The invention discloses a new mercury ion absorbent. The diaminobenzene sulfonate copolymerization modified polyaniline mercury ion absorbent in the invention is obtained by chemical oxidation copolymerization of aniline and 2,4-diaminobenzene sulfonate sodium. The invention uses diaminobenzene sulfonate copolymerization modified polyaniline to obtain copolymerization polyaniline particles by chemical oxidation so that sulfonic group with chelating function and ion exchange function is imported on polyaniline main chain and at the same time the content of amino functional group is added in polyaniline. So the absorbent has a good absorption performance for mercury ion; the absorption ability of polyaniline to waste liquid with mercury is improved greatly; it is ten times of saturation absorption capability of activated carbon. In addition, the preparation of absorbent is provided with high synthetic productivity rate, simple and easy process, low demand for producing equipment, and rapid extension so on.
Description
Technical field
The invention belongs to the Industrial Wastewater Treatment field, be specifically related to the purposes of a kind of Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN as mercury ion adsorbent.
Background technology
Mercury is wide at the occurring in nature distributed pole, all contains mercury in nearly all mineral, and mercury is to carry out one of industrial production, the indispensable material of scientific research.But mercury is again one of element that the tool of human and higher organism is endangered, inorganic mercury compound that can be water-soluble, easily by intestinal absorption, then toxicity is very strong as mercuric chloride (mercuric chloride), and inorganic mercury generates the stronger methyl mercury of toxicity by biomethylation, thereby passive plant absorbing, and enter human body by the enrichment of food chain, its enrichment multiple can be up to 10
6～10
7The mercury pollution that human factor is discharged is the main cause of present stage whole world mercury pollution, and China is that world's mercury consumes big country.According to 2000 relevant industries investigation is inferred that the mercury solution consumption of national mercury is about 1200 tons then, accounts for more than 50% of global mercury consumption.Wherein quite a few mercury and compound thereof are exhausted in atmosphere, the water body with industry, domestic refuse, and so a large amount of mercury contaminants is just directly endangering our national health.Therefore, exploitation high-efficiency environment friendly, mercury pollution resolution with low cost and the product focus that just becoming people's growing interest.
The method of the removal mercury ions in waste water of using has much at present, and is wherein noticeable with absorption method.And the adsorbent that is used to remove mercury ion roughly can be divided into two kinds in natural class and artificial synthetic class adsorbent.The actual adsorbent that drops into application mainly is an activated carbon, zeolite, natural class adsorbent such as bentonite, but these adsorbents mostly exist adsorption capacity on the low side, the not good and shortcoming that not can be recycled of adsorption effect, their mercury ion adsorption capacity is generally all in 0.1～100mg/g scope, to also often not high (the Babel S of the mercury ion clearance in the aqueous solution, Kurniawan T A.Low-cost adsorbents for heavymetals uptake from contaminated water:a review[J] .Journal of Hazardous MaterialsB, 2003 (97): 219-243).Therefore, the water quality after it is handled generally is difficult to reach national regulation integrated wastewater discharge standard (0.05mg/L).
And manually synthetic class adsorbent generally comprises synthetic polymer and artificial modification's natural adsorbent, this class adsorbent is owing to contain a large amount of functional groups, so, they all have higher adsorption capacity and good adsorption effect usually, there is pertinent literature to report that a kind of adsorption capacity of mercaptan chitosan modified gel particle has reached 1600mg/g (Merrifield J D, Davids W G, MacRae J D, et al.Uptake of mercury by thiol-graftedchi tosan gel beads[J] .WaterResearch, 2004 (38): 3132-3138), the another kind of aminated chitosan particle adsorption capacity of ethylenediamine of using also reaches 460mg/g (Jeon C, Holl W H.Chemical modification of chitosan and equilibrium studyfor mercury ion removal[J] .Water Research, 2003 (37): 4770-4780), the organic ceramic of thiol functionization adsorption capacity in sour environment is 740mg/g, and use the absorption of its adsorption column of making to flow out that mercury ion content is lower than 0.001mg/L (Nam K H in liquid, Tavlarides L L.Mercury removal from acidic waste solutionsusing a thiol funct ionalorgano-ceramic adsorbent[J] .Solvent Extract ion And IonExchange, 2003,21 (6): 899-913.), reached Drinking Water source quality standard (0.001mg/L).These adsorbents not only have than high absorption capacity, and having quite a few to recycle in them by the desorption operation, strippant commonly used at present has hydrochloric acid, nitric acid, sulfuric acid, perchloric acid, EDTA, KI solution, NaCl solution even hot water etc.These adsorbents can use more than five times usually repeatedly and adsorption capacity does not have obvious decline yet.Synthetic polymer adsorbent, artificial modification's natural adsorbent why have the absorption property of excellence like this all to be because functional groups such as its amido that contains, imido grpup, sulfydryl have complexing even redox suction-operated to mercury ion.Therefore, people often pay close attention to the polymer that those have functional groups such as a large amount of free aminos, imido grpup, sulfydryl during the synthetic polymer adsorbent efficiently more in development of new.
Though shortcomings such as manually synthetic class adsorbent has good absorption property, and there is the synthesis procedure complexity in this class adsorbent, and cost of material is high are so generally all cost performance is not high.Therefore develop that a kind of synthesis technique is simple, cost of material is cheap, the efficient mercury ion adsorbent of excellent performance is the matter of utmost importance that present field of waste water treatment needs to be resolved hurrily.
Summary of the invention
Purpose of the present invention just provides a kind of with low cost, and mercury ion is had the adsorbent Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN of absorption property rapidly and efficiently.
Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN Hg ion sorbent of the present invention is by aniline and 2, the polymer that two kinds of monomers of 4-diamino benzene sulfonic acid sodium obtain by the chemical oxidation copolymerization.
In the above-mentioned copolymer, during as adsorbent, aniline and 2 preferably, the mol ratio of two kinds of monomers of 4-diamino benzene sulfonic acid sodium is 9:1～7:3.
The preparation method of above-mentioned Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN Hg ion sorbent the steps include:
A, in aniline (AN) and 2, add hydrochloric acid in the 4-diamino benzene sulfonic acid sodium (SDB), be stirred to dissolving fully;
B, take by weighing (NH
4)
2S
2O
8Be dissolved in the hydrochloric acid, be stirred to dissolving fully, (NH
4)
2S
2O
8With the mol ratio of two kinds of monomers be 0.5～3:1;
C, stirring are down with (NH
4)
2S
2O
8Solution adds in the mixed liquor of above-mentioned two kinds of monomers, and question response is complete, and post processing gets the modification by copolymerization polyaniline.
The reaction equation of the aniline copolymer that the employing chemical oxidative polymerization obtains is as follows:
Said post processing is meant after reaction finishes, and filters, washs, and does not have SO in clear liquid
4 2-Till the ion, attitude PANSDB copolymer powder at last obtains the product drying to mix.
When the modification by copolymerization polyaniline that the present invention obtains is used as mercury ion adsorbent, environment temperature, ion concentration of mercury etc. is not all had specific (special) requirements, take static adsorptive method (or claiming batch method) to get final product during use.
Because the absorption property of adsorbent is subjected to the influence of adsorption time, initial ion concentration of mercury, adsorbent consumption, among the present invention, when initial ion concentration of mercury scope was 0.10～80mmol/L, the consumption of aniline copolymer was 10～70mg/L, and adsorption time is 0.5 hour～144 hours.
Advantage of the present invention mainly is:
1, this preparation of adsorbent have the synthetic yield height, simple for process, less demanding to production equipment, be beneficial to characteristics such as rapid popularization.
2, two of this adsorbent kinds of main synthesis material aniline and 2,4-diamino benzene sulfonic acid sodium is the common chemical raw materials low price, and general price only is 1～20,000 yuan/ton.
3, this adsorbent is big to the adsorption capacity of mercury ion, the high adsorption capacity of realizing in adsorption experiment is 1721.1mg/g, saturated adsorption capacity by Langmuir simulation gained is 1754.6mg/g, be the mercury that this adsorbent of 1g can adsorb 1.7546g, be the active carbon saturated adsorption capacity ten surplus times.
4, in the aniline copolymer owing to have a large amount of functional groups, so not only mercury ion is had good cnmplexation adsorbability, and can adsorb with the mercury ion generation redox of high initial concentration, thereby significantly promote the mercury ion adsorption capacity of aniline copolymer, this makes that aniline copolymer can be applied to the high concentration mercury-containing waste water is carried out the mercury ion recycling.
In sum, the present invention uses Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN by chemical oxidization method, obtain the aniline copolymer particle, make and introduced sulfonic acid group on the polyaniline main chain with chelating function and ion exchanging function, increased the content of amido functional group in the polyaniline simultaneously, therefore make that this adsorbent has excellent absorption property to mercury ion, improved the adsorption capacity of polyaniline greatly for mercurous waste liquid.
Description of drawings
Fig. 1 is the X ray diffracting spectrum of the AN/SDB copolymer of 9:1.
Copolymer is about 13 degree a very little diffuse peaks to be arranged at Bragg angle, and no peak crystallization occurs in the angle scope of whole Prague, illustrates that the gained copolymer is a undefined structure.
The specific embodiment
The simple preparation method of aniline copolymer is described with specific embodiment below, and simultaneously detailed explanation aniline copolymer is to the mercury ion excellent adsorption performance.
The present invention adopts static adsorptive method (or claiming batch method) to utilize AN/SDB aniline copolymer absorption mercury ion, concrete steps are as follows: the dry conical flask of 50mL is placed 30 ℃ of water-baths, add certain density mercurous solion 25mL with the 25mL pipette, balance 10 minutes, take by weighing a certain amount of aniline copolymer then and place the mercurous solion of stirring, the stirring and adsorbing certain hour filters, and ion concentration of mercury residual in the filtrate is analyzed.When residual ion concentration of mercury 2.0 * 10
-4～5.0 * 10
-2Mol/L (during the scope of 40mg/L～10g/L), adopts mercury ion content (Huang Meirong, Dou Qiang, Li upstart, application number: 200710036738.3) in the volumetric analysis titration filtrate; When residual ion concentration of mercury is lower than 1.0 * 10
-4During mol/L (20mg/L), adopt mercury vapourmeter to analyze mercury ion content.Calculate the adsorption capacity of adsorbent then according to (1) formula, calculate the adsorption rate of mercury ion according to (2) formula.
Q:Hg
2+Adsorption capacity (mg/g); Q:Hg
2+The absorption percentage; C
o: initial Hg
2+Concentration (mol/L); C: the residual Hg in absorption back
2+Concentration (mol/L); V: mercurous solion volume (mL); M:Hg
2+Molecular weight (g/mol); W: the weight (g) that adds polymer.
Adsorption capacity is with the variation of adsorption time when adsorbing certain density mercury ion according to aniline copolymer, can draw out adsorption capacity curve over time, can obtain adsorption equilibrium time and maximum adsorption capacity under a certain ion concentration of mercury by this curve, and can utilize the pseudo-first-order kinetics equation to carry out the adsorption dynamics adsorption kinetics simulation, thereby draw adsorption reaction velocity constant K.
According to mercury ion the adsorption capacity value when absorption reach balance of aniline copolymer to a series of initial concentrations, can draw the relation of adsorbent, adopt Langmuir adsorption isotherm equation can simulate the theoretical saturated adsorption capacity Qm of aniline copolymer mercury ion to this change curve to equilibrium adsorption capacity with the initial ion concentration of mercury of mercury ion.
Embodiment 1～3: preparation AN/SDB aniline copolymer
According to aniline (AN) monomer and 2, the mol ratio of 4-diamino benzene sulfonic acid sodium (SDB) monomer is that 9:1 accurately gets AN monomer 0.054mol (4.92mL, be 5.022g) and SDB monomer 0.006mol (1.26g) place the dried and clean beaker of 250mL, add 150mL 1.0mol/L hydrochloric acid, 25 ℃ are stirred 0.5h down to dissolving fully, obtain colourless solution; By ammonium persulfate/monomer mole ratio is 1/1, takes by weighing 0.06mol (13.68g) (NH
4)
2S
2O
8Be dissolved in the 50mL 1.0mol/L hydrochloric acid, constant temperature stirs 0.5h to dissolving fully in water-bath.Speed with 1/3 seconds under magnetic agitation drips (NH
4)
2S
2O
8Solution is in above-mentioned monomer mixed solution.After dropwising, continue reaction 24h.Reaction finishes, and filters, with distilled water washing several times, until using BaCl
2There is not SO in the solution check clear liquid
4 2-(generally to spend the water of 1000mL) till the ion.Product is transferred to 40 ℃ of following dry weeks in the culture dish, get bottle green doping attitude PANSDB copolymer powder, productive rate is 72.9%.
Under the same synthesis condition, the mol ratio that changes AN monomer and SDB monomer is 8:2 and 7:3, and gained copolymer productive rate is 59.3%, 55.7%.
Embodiment 4
Getting the 50mg mol ratio is the AN/SDB copolymer of 8:2, dropped into 30 ℃, initial concentration and be in the mercuric nitrate solution of 25mL of 5.00mmol/L stirring and adsorbing 24 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is about 97.4% under this kind situation, and adsorption capacity is 495.7mg/g.
Under the equal adsorption conditions, mol ratio is that the adsorption rate of the AN/SDB copolymer of 7:3 is about 98.3%, and adsorption capacity is 497.7mg/g.
Embodiment 5
Got the 50mg mol ratio and be in 30 ℃ of the AN/SDB copolymer inputs of 9:1, the 25mL mercuric nitrate solution that initial concentration is 0.10mmol//L stirring and adsorbing 24 hours, after filter paper filters, analyze mercury ion content in the filtrate with mercury vapourmeter, the result shows that the remaining ion concentration of mercury in absorption back is 1.75ppb under this kind situation.Adsorption rate is 99.99%, and adsorption capacity is 9.99mg/g.
Embodiment 6
Got the 50mg mol ratio and be in the mercuric nitrate solution of 30 ℃ of the AN/SDB copolymer inputs of 9:1,25mL that initial concentration is 0.99mmol//L stirring and adsorbing 24 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is about 99.95% under this kind situation, and adsorption capacity is 99.2mg/g.
Embodiment 7
Got the 50mg mol ratio and be in 30 ℃ of the AN/SDB copolymer inputs of 9:1, the 25mL mercuric nitrate solution that initial concentration is 3.73mmol//L stirring and adsorbing 0.5 hour, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is 64.6% under this kind situation, and adsorption capacity is 241.7mg/g.
Under the similarity condition, changing adsorption time was respectively 1 hour, 2 hours, 4 hours, 12 hours, 24 hours, 48 hours, 72 hours, the gained adsorption capacity is respectively 248.7mg/g, 261.8mg/g, 277.8mg/g, 311.9mg/g, 368.1mg/g, 372.1mg/g, 374.1mg/g, and adsorption rate is respectively 66.5%, 70.0%, 74.3%, 83.4%, 98.4%, 99.5%, 99.8%.
The equilibrium adsorption time is 24 hours in the time of can obtaining aniline copolymer thus and adsorb the mercury ion of initial ion concentration of mercury 3.73mmol//L, carries out the adsorption dynamics adsorption kinetics simulation with the pseudo-first-order kinetics equation, and the coefficient correlation of simulation is 0.9917, and standard deviation is 0.0451.The adsorption reaction velocity constant K that simulation obtains is 6.369 * 10
-2h
-1
Embodiment 8
Got the 50mg mol ratio and be in the mercuric nitrate solution of 30 ℃ of the AN/SDB copolymer inputs of 9:1,25mL that initial concentration is 10.05mmol//L stirring and adsorbing 24 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is 63.0% under this kind situation, and adsorption capacity is 634.9mg/g.
Embodiment 9
Got the 50mg mol ratio and be in the mercuric nitrate solution of 30 ℃ of the AN/SDB copolymer inputs of 9:1,25mL that initial concentration is 20.54mmol//L stirring and adsorbing 72 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is 52.8% under this kind situation, and adsorption capacity is 1088.6mg/g.
Got the 50mg mol ratio and be in the mercuric nitrate solution of 30 ℃ of the AN/SDB copolymer inputs of 9:1,25mL that initial concentration is 44.50mmol//L stirring and adsorbing 144 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is 52.8% under this kind situation, and adsorption capacity is 1088.6mg/g.
Embodiment 11
Got the 50mg mol ratio and be in the mercuric nitrate solution of 30 ℃ of the AN/SDB copolymer inputs of 9:1,25mL that initial concentration is 78.49mmol//L stirring and adsorbing 144 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is 21.9% under this kind situation, and adsorption capacity is 1721.1mg/g.
Embodiment 12
According to embodiment 4～10 resulting mol ratios is the equilibrium adsorption capacity of the AN/SDB copolymer absorption of 9:1 to mercury ion, carry out the adsorption isotherm simulation with the Langmuir equation, obtaining aniline copolymer is 1754.6mg/g to the theoretical saturated adsorption capacity Qm of mercury ion, the coefficient correlation of this simulation is 0.9928, and standard deviation is 0.0693.
Embodiment 13
Got the 20mg mol ratio and be in 30 ℃ of the AN/SDB copolymer inputs of 9:1, the 25mL mercuric nitrate solution that initial concentration is 9.90mmol//L stirring and adsorbing 24 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is 44.9% under this kind situation, and adsorption capacity is 1113.6mg/g.
Embodiment 14
Got the 70mg mol ratio and be in 30 ℃ of the AN/SDB copolymer inputs of 9:1, the 25mL mercuric nitrate solution that initial concentration is 9.90mmol//L stirring and adsorbing 24 hours, after filter paper filters, with mercury ion content in the volumetric analysis titration filtrate, the result shows, adsorption rate is 63.7% under this kind situation, and adsorption capacity is 451.6mg/g.
Claims (4)
1,2, the 4-Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN Hg ion sorbent is by aniline and 2, the polymer that two kinds of monomers of 4-diamino benzene sulfonic acid sodium obtain by following chemical oxidation copolymerization process:
A, in aniline and 2, add hydrochloric acid in the 4-diamino benzene sulfonic acid sodium, be stirred to dissolving fully;
B, take by weighing (NH
4)
2S
2O
8Be dissolved in the hydrochloric acid, be stirred to dissolving fully, (NH
4)
2S
2O
8With the mol ratio of two kinds of monomers be 0.5～3:1;
C, stirring are down with (NH
4)
2S
2O
8Solution adds in the mixed liquor of above-mentioned two kinds of monomers, and question response is complete, and post processing gets described mercury ion adsorbent; Said post processing is meant after reaction finishes, and filters, washs, and does not have SO in clear liquid
4 2-Till the ion, at last the product drying is obtained described mercury ion adsorbent.
2, as claimed in claim 12, the 4-Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN Hg ion sorbent is characterized in that: prepare the aniline and 2 of described mercury ion adsorbent, the mol ratio of two kinds of monomers of 4-diamino benzene sulfonic acid sodium is 9:1,8:2 or 7:3.
3, claim 1 or 2 described 2, the application of 4-Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN Hg ion sorbent is characterized in that: take static adsorptive method during use.
4, claim 3 described 2, the application of 4-Diaminobenzenesulfonpolymerization polymerization modification polymer materials-PAN Hg ion sorbent, it is characterized in that: when initial ion concentration of mercury scope is 0.10～80mmol/L, the consumption of described mercury ion adsorbent is 10～70mg/L, and adsorption time is 0.5 hour～144 hours.
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| CN101633733B (en) * | 2009-09-01 | 2011-09-07 | 南京大学 | Conductive polyaniline humic acid complex, preparation method thereof and application of mercury ion in adsorbed water body |
| CN101928048B (en) * | 2010-08-27 | 2012-05-09 | 陕西科技大学 | Method for purifying humic acid pollutants in water by utilizing polyaniline |
| CN102513068B (en) * | 2011-11-02 | 2013-07-24 | 西北师范大学 | Modified polyaniline adsorbent and application of modified polyaniline adsorbent in wastewater treatment |
| CN102702517A (en) * | 2012-06-08 | 2012-10-03 | 武汉工程大学 | Preparation method of sulfonated grapheme/polyaniline composite |
| CN105369608B (en) * | 2015-12-28 | 2018-01-02 | 河南省科学院化学研究所有限公司 | The functional fibre and its synthetic method of supported copper (II) ion |
| CN109745959A (en) * | 2019-03-10 | 2019-05-14 | 南京新月材料科技有限公司 | A kind of sulfonated polyaniline of sulfuric acid sulfonation/bumps soil composite material smoke absorption agent |
| CN112126059A (en) * | 2020-09-03 | 2020-12-25 | 哈尔滨工业大学（深圳） | Polyaromatic diamine, preparation method and application thereof, and mercury ion adsorbent |
| CN116059979B (en) * | 2021-11-01 | 2023-09-22 | 华北电力大学（保定） | Method for synthesizing protonated polyaniline composite membrane capable of efficiently adsorbing gaseous mercury |
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Non-Patent Citations (4)
| Title |
|---|
| Sorption of mercury on chemically synthesized polyaniline. P.S. Remya Devi,etc.Journal of Radioanalytical and Nuclear Chemistry,Vol.269 No.1. 2006 |
| Sorption of mercury on chemically synthesized polyaniline. P.S. Remya Devi,etc.Journal of Radioanalytical and Nuclear Chemistry,Vol.269 No.1. 2006 * |
| 聚合物吸附剂的改性及其对重金属离子的吸附性能. 黄美荣等.曲阜师范大学学报，第31卷第1期. 2005 |
| 聚合物吸附剂的改性及其对重金属离子的吸附性能. 黄美荣等.曲阜师范大学学报，第31卷第1期. 2005 * |
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