CN107233874A - A kind of Fe3O4/CD G PANI composites are used for the method for heavy metal adsorption - Google Patents
A kind of Fe3O4/CD G PANI composites are used for the method for heavy metal adsorption Download PDFInfo
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- CN107233874A CN107233874A CN201710521372.2A CN201710521372A CN107233874A CN 107233874 A CN107233874 A CN 107233874A CN 201710521372 A CN201710521372 A CN 201710521372A CN 107233874 A CN107233874 A CN 107233874A
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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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
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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
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of Fe3O4/ CD G PANI composites are used for the method for heavy metal adsorption, and it comprises the following steps：The first step, by Fe3O4The suspension and NaNO of/CD G PANI composites3Solution mixes pre-equilibration 24 hours in advance, then adds in effluent containing heavy metal ions, second step passes through the HNO to mixed solution and dripping trace3Or NaOH solution, the 3rd step, then mechanical agitation 24 hours is so that adsorption reaction reaches poised state；4th step carries out separation of solid and liquid；Solid portion obtained by 5th step is eluted repeatedly, untill Cu or Zn are can't detect in leachates；6th step, collects remaining Fe3O4/ CD G PANI colloids are placed in baking oven, and the adsorption/desorption operation of next round is carried out after drying, and 8 times are carried out always and realizes recycling.Present invention environmental protection with low cost, high recycling rate, the purification efficiency simultaneously for cupric and the municipal sewage containing zinc is high.
Description
Technical field
The present invention relates to a kind of method that Fe3O4/CD-G-PANI composites are used for heavy metal adsorption.
Background technology
With expanding economy, various industrial and agricultural production processes have discharged one into soil, surface water and groundwater system
The poisonous and hazardous heavy metal ion of series, causes serious environmental pollution.Copper (Cu) and zinc (Zn) are used as common divalence weight
Metal ion, application widely is suffered from industries such as metallurgical, electrolysis, plating, paint, machinery, ceramics and electronics.
It can inevitably be discharged into environment, be eventually entered into by the food enrichment of biological chain in body in application process,
Cause serious health hazard.According to environmental quality standards, for the stability and the health of organism of the ecosystem, it is necessary to
Effective method is taken strictly to control Cu in industrial wastewater and Zn concentration, it is ensured that its concentration reaches in the water body of discharge
To environmental requirement.
So far, a series of physico-chemical process and technology be applied to remove industrial wastewater in heavy metal from
Sub- Cu, including flocculation, absorption, membrane separation process and biological treatment etc..Absorption method is to the removal of heavy metal in waste water and rare expensive
The recovery of metal, has the advantages that efficient, economic, selectivity is good, particularly handles the not treatable low concentration weight of conventional method
Metallic wastewater has unique value, therefore is a kind of application prospect very wide heavy metal treatment technology.Domestic and international researcher
Heavy metal the ion Cu and Zn such as System Approach mineral, titanate nanotube and multi-walled carbon nanotube removal capacity.But
It is that above-mentioned material is separated after absorption it is difficult to from the aqueous solution, so as to limit the application in water body purification reparation
Prospect.
Magnetic material has good saturation magnetic intensity, easily can reach what is separated from the aqueous solution by magnet
Effect.Wherein, magnetic iron ore (Fe3O4) particle has obtained Study on Environmental Protection personnel's as a kind of nano material of high magnetic
Favor, is widely used in removing the heavy metal ion in various polluted-waters.It will be appreciated that simple Fe3O4
Nano particle is easily oxidized in atmosphere, and is easy to reunite in aqueous, and the reality for hindering this material should
With.In order to overcome drawbacks described above, people attempt the natural organic matters such as chitosan and polyacrylic acid being incorporated into Fe3O4 particle tables
Face is as protective agent, so that the composite material of core-shell structure of novel stabilising is prepared, while taking into account kernel Fe3O4 nano particles
Magneto separate performance and shell organic matter polyfunctional group characteristic, show the good removal capacity of heavy metal ion.
Correlative study shows that cyclodextrin (CD) has substantial amounts of oxygen-containing functional group, high adsorption capacity；Polyaniline (PANI)
With substantial amounts of nitrogenous functional group, adsorption capacity is also very strong, and CD and PANI are combined to form into CD-G-PANI using crosslinking technology
Compound, realizes the coupling of oxygen-containing and nitrogenous functional group, improves the clean-up effect of adsorption capacity and heavy metal.In addition, CD-
G-PANI has higher surface site concentration for HA single CD and PANI, shows that the former can provide more
Avtive spot be used for heavy metal ion complexing.In theory, more excellent suction can be presented in Fe3O4/CD-G-PANI
Attached performance.Investigation based on us, the research in terms of being still used for environmental pollution improvement without Fe3O4/CD-G-PANI at present.
The content of the invention
The technical problem to be solved in the present invention is to overcome existing defect there is provided a kind of Fe3O4/CD-G-PANI composite woods
Expect the method for heavy metal adsorption, environmental protection with low cost, high recycling rate, simultaneously for cupric and municipal sewage containing zinc
Purification efficiency it is high.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
A kind of Fe3O4/ CD-G-PANI composites are used for the method for heavy metal adsorption, it is characterised in that：Including following step
Suddenly：
The first step, by Fe3O4The suspension and NaNO of/CD-G-PANI composites3It is small that solution mixes pre-equilibration 24 in advance
When, then add in effluent containing heavy metal ions so that the concentration of each component reaches preset value；
Second step, passes through the HNO to mixed solution and dripping trace concentration 0.01mol/L3Or NaOH solution, by plum
Teller acidometer adjusts pH to required numerical value；
3rd step, then mechanical agitation 24 hours is so that adsorption reaction reaches poised state；
4th step, carries out separation of solid and liquid using simple magnetism separate method and obtains supernatant and solid portion；
5th step, the solid portion of gained is eluted repeatedly with 0.001mol/L HCl solution and high purity water, until
Untill Cu or Zn is can't detect in leachates；
6th step, collects remaining Fe3O4/ CD-G-PANI colloids are placed in baking oven, after being dried under 60 DEG C of temperature conditionss
The adsorption/desorption operation of next round is carried out, is carried out 8 times always, recycling is realized.
The beneficial effect that is reached of the present invention is compared with prior art：
The present invention utilizes Fe3O4The characteristic of/CD-G-PANI composites, its heavy metal ion Cu and Zn all have compared with
Good removal capacity.Prepare Fe3O4/ CD-G-PANI costs are very low, and use simple chemical coprecipitation means just can be with
Prepared by batch, this advantage greatly reduces the preparation cost of composite.In addition, Fe3O4/ CD-G-PANI is very wide in range
Good stability is all kept in the range of pH.After Cu and Zn absorption, material can just be carried out by magnet very easy
Magneto separate, solve traditional material and be difficult to separate or need to consume the problem that is separated of mass energy.Consolidating after separation
Body will can be adsorbed under Cu and the Zn desorption of material surface after hydrochloric acid solution soaks such a simple processing
Come, and then can repeatedly utilize, recycle performance with very good, and can realize from mixed waste liquor effectively
Remove Cu and Zn.In view of a series of above-mentioned advantages, Fe3O4/ CD-G-PANI is expected to as cheap, environmentally friendly and efficient absorption
Agent is used for the purified treatment to actual cupric and the municipal sewage containing zinc.
The substantial amounts of oxygen-containing functional group of cyclodextrin (CD) of the present invention, high adsorption capacity；Polyaniline (PANI) is substantial amounts of nitrogenous
Functional group, high adsorption capacity is combined both using crosslinking technology, realizes the coupling of oxygen-containing and nitrogenous functional group, improves absorption
Ability, and heavy metal clean-up effect.
From the foregoing, it will be observed that the present invention can solve the problem that the shortcomings of the prior art, environmental protection with low cost repeats profit
High with rate, the purification efficiency simultaneously for cupric and the municipal sewage containing zinc is high.
Embodiment
The preferred embodiments of the present invention are illustrated below, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
The present invention relates to a kind of Fe3O4/ CD-G-PANI composites are used for the method for heavy metal adsorption, it is characterised in that：
Comprise the following steps：
The first step, by Fe3O4The suspension and NaNO of/CD-G-PANI composites3It is small that solution mixes pre-equilibration 24 in advance
When, then add in effluent containing heavy metal ions so that the concentration of each component reaches preset value.
Second step, passes through the HNO of from the concentration 0.01mol/L to mixed solution and dripping trace3Or NaOH solution, by
Plum Teller acidometer adjusts pH to required numerical value, and wherein PH numerical value is in 2-11, preferably 7-10；When pH rises to from 2.0
When 7.0, Zn adsorption rate rises rapidly to~90% from~30%；Absorption keeps stable in the range of pH 7-10；And
pH>When 10, Zn absorption starts to be gradually reduced again, 75% dropped to from the 90% of pH 10.0 near pH 12.0；
3rd step, then mechanical agitation 24 hours is so that adsorption reaction reaches poised state；
4th step, carries out separation of solid and liquid using simple magnetism separate method and obtains supernatant and solid portion.
5th step, the solid portion of gained is eluted repeatedly with 0.001mol/L HCl solution and high purity water, until
Untill Cu or Zn is can't detect in leachates；
6th step, collects remaining Fe3O4/ CD-G-PANI colloids are placed in baking oven, after being dried under 60 DEG C of temperature conditionss
The adsorption/desorption operation of next round is carried out, is carried out 8 times always, recycling is realized, overall cost is saved.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, this hair is not limited to
It is bright, although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, its according to
The technical scheme described in foregoing embodiments can so be modified, or which part technical characteristic is equal
Replace.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in this
Within the protection domain of invention.
Claims (1)
1. a kind of Fe3O4/ CD-G-PANI composites are used for the method for heavy metal adsorption, it is characterised in that：Comprise the following steps：
The first step, by Fe3O4The suspension and NaNO of/CD-G-PANI composites3Solution mixes pre-equilibration 24 hours in advance, so
Add afterwards in effluent containing heavy metal ions so that the concentration of each component reaches preset value；
Second step, passes through the HNO of from the concentration 0.01mol/L to mixed solution and dripping trace3Or NaOH solution, by plum Teller
Acidometer adjusts pH to required numerical value；
3rd step, then mechanical agitation 24 hours is so that adsorption reaction reaches poised state；
4th step, carries out separation of solid and liquid using simple magnetism separate method and obtains supernatant and solid portion；
5th step, the solid portion of gained is eluted repeatedly with 0.001mol/L HCl solution and high purity water, until leachates
In can't detect Cu or Zn untill；
6th step, collects remaining Fe3O4/ CD-G-PANI colloids are placed in baking oven, are carried out after being dried under 60 DEG C of temperature conditionss
The adsorption/desorption operation of next round, is carried out 8 times always, realizes recycling.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107880489A (en) * | 2017-11-24 | 2018-04-06 | 武汉理工大学 | A kind of preparation method of anisotropic conductive epoxy resin composite material |
| CN110270317A (en) * | 2019-05-29 | 2019-09-24 | 绍兴文理学院元培学院 | A kind of preparation method of the cellulose base hydrogel adsorbent for heavy metal containing wastewater treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360659A (en) * | 2011-06-24 | 2012-02-22 | 中国科学院宁波材料技术与工程研究所 | Magnetic submicron composite core-shell particles, and preparation method and application thereof |
| CN102974326A (en) * | 2012-12-13 | 2013-03-20 | 西北师范大学 | Preparation of silicon dioxide-cyclodextrin nanometer adsorbing agent and application of adsorbing agent in adsorption of heavy metal ion Cu<2+> in sewage |
| CN103721689A (en) * | 2014-01-08 | 2014-04-16 | 湖南大学 | Magnetic meso-porous silicon, preparation method of magnetic meso-porous silicon, magnetic meso-porous silicon adsorbent, preparation method and application of magnetic meso-porous silicon adsorbent |
| CN104741096A (en) * | 2015-03-16 | 2015-07-01 | 中国科学院兰州化学物理研究所 | Preparation method of magnetic clay mineral/polyaniline composite adsorption material |
-
2017
- 2017-06-30 CN CN201710521372.2A patent/CN107233874A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360659A (en) * | 2011-06-24 | 2012-02-22 | 中国科学院宁波材料技术与工程研究所 | Magnetic submicron composite core-shell particles, and preparation method and application thereof |
| CN102974326A (en) * | 2012-12-13 | 2013-03-20 | 西北师范大学 | Preparation of silicon dioxide-cyclodextrin nanometer adsorbing agent and application of adsorbing agent in adsorption of heavy metal ion Cu<2+> in sewage |
| CN103721689A (en) * | 2014-01-08 | 2014-04-16 | 湖南大学 | Magnetic meso-porous silicon, preparation method of magnetic meso-porous silicon, magnetic meso-porous silicon adsorbent, preparation method and application of magnetic meso-porous silicon adsorbent |
| CN104741096A (en) * | 2015-03-16 | 2015-07-01 | 中国科学院兰州化学物理研究所 | Preparation method of magnetic clay mineral/polyaniline composite adsorption material |
Non-Patent Citations (2)
| Title |
|---|
| JIE LI, ET AL: "Synthesis of water-dispersible Fe3O4@β-cyclodextrin by plasma-induced grafting technique for pollutant treatment", 《CHEMICAL ENGINEERING JOURNAL》 * |
| PARISA DARAEI,ET AL: "Novel polyethersulfone nanocomposite membrane prepared by PANI/Fe3O4 nanoparticles with enhanced performance for Cu(II) removal from water", 《JOURNAL OF MEMBRANE SCIENCE》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107880489A (en) * | 2017-11-24 | 2018-04-06 | 武汉理工大学 | A kind of preparation method of anisotropic conductive epoxy resin composite material |
| CN110270317A (en) * | 2019-05-29 | 2019-09-24 | 绍兴文理学院元培学院 | A kind of preparation method of the cellulose base hydrogel adsorbent for heavy metal containing wastewater treatment |
| CN110270317B (en) * | 2019-05-29 | 2021-11-09 | 绍兴文理学院元培学院 | Preparation method of cellulose-based hydrogel adsorbent for heavy metal wastewater treatment |
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