CN106902756A - A kind of compound adsorbent for removing nucleic plutonium, its preparation method and application - Google Patents
A kind of compound adsorbent for removing nucleic plutonium, its preparation method and application Download PDFInfo
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- CN106902756A CN106902756A CN201710172614.1A CN201710172614A CN106902756A CN 106902756 A CN106902756 A CN 106902756A CN 201710172614 A CN201710172614 A CN 201710172614A CN 106902756 A CN106902756 A CN 106902756A
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- 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
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- 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
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- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
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- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
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- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
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- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
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- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
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- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
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- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
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Abstract
The present invention provides a kind of compound adsorbent for removing nucleic plutonium, belongs to the water technology technical field of Spent Radioactive containing plutonium.The compound adsorbent is to be made up of graphene oxide and shitosan.The present invention also provides the preparation method of the compound adsorbent, glutaraldehyde water solution is added in chitosan solution, it is subsequently adding graphene oxide, 85~95min is reacted in 45~55 DEG C of stirred in water bath, regulation reaction solution pH to 9~10, be placed in 75~80 DEG C of water-bath continue react 50~70min after wash to pH be 7, vacuum drying.Compound adsorbent of the present invention can reach 95.11% to the eliminating rate of absorption of nucleic plutonium, and waste liquid can be burned completely through the adsorbent for being adsorbed with nucleic that treatment is separate, only it is left block radioactive substance after burning, it is not only convenient for the recycling of nucleic, and it is expected to cancel the cement solidification line in former technological process, the purpose of radwaste " minimum " is reached, nuclear waste water handling process, reduction radioactive waste storage space is greatly simplified.
Description
Technical field
The invention belongs to contain plutonium Spent Radioactive water technology technical field, specially a kind of compound suction for removing nucleic plutonium
Attached dose, its preparation method and application.
Background technology
A large amount of radioactive wastewaters are produced in nuclear industry production process, wherein the nucleic plutonium for containing have extremely strong radioactivity and
Chemical toxicity, it is necessary to can be discharged by effective purified treatment, will otherwise have a strong impact on ecological environment and health.
Therefore, the purified treatment containing plutonium waste liquid is received much concern.At present, the low radioactive waste liquid containing plutonium for being discharged in nuclear industry production process
Main to carry out purified treatment using inorganic reagent flocculent precipitation, the technique is remained in some drawbacks：On the one hand, processing equipment body
Product is huge, and long processing period, efficiency is low, is also easy to produce secondary pollution；On the other hand, a large amount of radioactivity mud are produced after wastewater treatment
Slurry, does not only result in that subsequent treatment cost is higher, and need to take huge nuclear waste storage space, while nuclear waste is chronically
Lower storage easily causes radiological safety hidden danger to ecological environmental and human health impacts.
From for energy-saving and emission-reduction and environmental protection angle, there is operation letter using rather extensive absorption method handling process
Just, with low cost, non-secondary pollution and the purification process advantage such as rapidly and efficiently.Therefore, good stability, function admirable and into
The preparation and research of this cheap sorbing material are always one of research emphasis of Spent Radioactive water treatment field, in synthesizing new
On the basis of sorbing material, the absorption property for lifting the material then has important practical significance and application value.
Graphene oxide (GO) is a kind of new carbon developed in recent years, can be quickly and efficiently dirty to nucleic
Dye thing carries out purified treatment, radioactive pollution is minimized within the extremely short time, so as to avoid diffusion and the danger of nuclear pollution
Evil.However, graphene oxide (GO) dispersiveness in water is fabulous, Solid-Liquid Separation is difficult after causing treatment.
The content of the invention
An object of the present invention is to provide a kind of compound adsorbent for removing nucleic plutonium, and compound adsorbent of the present invention is to putting
Nucleic plutonium in penetrating property waste water carries out Adsorption, is not only easy to the separation of solid and liquid operation of post processing, while the present invention is compound inhaling
Attached dose is organic adsorbent in, can be burnt completely, will not take waste storage space, meets radwaste " most
Smallization " principle.
The second object of the present invention is to provide the preparation method of the compound adsorbent.
The third object of the present invention is to provide treatment application of the compound adsorbent to radioactivity plutonium containing nucleic waste water.
The object of the invention is achieved through the following technical solutions：
A kind of compound adsorbent for removing nucleic plutonium, the adsorbent is by being combined that graphene oxide and shitosan are constituted
Adsorbent.
As the present invention it is a kind of remove nucleic plutonium compound adsorbent a specific embodiment, the compound adsorbent by
Raw material including shitosan, glutaraldehyde, graphene oxide is prepared under water bath condition.
A kind of preparation method of the compound adsorbent for removing nucleic plutonium, including：Glutaraldehyde water solution is added to shitosan
In solution, graphene oxide is subsequently adding, 85~95min is reacted in 45~55 DEG C of stirred in water bath, adjust reaction solution pH to 9
~10, it is placed in 75~80 DEG C of water-bath and continues to react that wash to pH after 50~70min be 7, it is multiple that vacuum drying obtains final product the present invention
Close adsorbent.
As an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention, described penta
The volume fraction of the dialdehyde aqueous solution is 50%；The reaction solution pH is adjusted using the NaOH solution of 0.1mol/L；It is described to wash
Wash and use ethanol and deionized water cyclic washing until pH is 7；The vacuum drying temperature is 45~55 DEG C.
As an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention, the shell
Glycan solution is that Chitosan powder is dissolved in glacial acetic acid solution, and ultrasonic agitation is prepared for 1~3 hour at room temperature；Wherein,
The quality of Chitosan powder is (0.4g~0.8g) with the volume ratio of glacial acetic acid solution:(20ml~40ml).
As an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention, the shell
Glycan powder is 1 with the mass ratio of graphene oxide:2~4:3；The glutaraldehyde water solution is with the volume ratio of glacial acetic acid solution
3~5:20~40.
As an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention, the oxygen
The preparation method of graphite alkene is：By graphite, NaNO3And H2SO4To being placed in ice bath after mixing, KMnO is slowly added to4, and control
Reacting liquid temperature processed is less than 20 DEG C；Remove ice bath by temperature be increased to 30~40 DEG C and keep 25~35min, sequentially add water with
H2O2Yellowish-brown product is obtained after solution reaction, graphene oxide is obtained final product after centrifugation, washing, vacuum drying.
As an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention, the stone
Ink, NaNO3、KMnO4Mass ratio be 4：2：12；The quality and H of the graphite2SO4Volume ratio be 4g:92ml；It is described
H2SO4, water, H2O2The volume ratio of solution is 92:184:340.
It is described as an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention
H2O2The mass fraction of solution is 0.05%, and the washing is repeatedly washed using 10%HCl and deionized water, the vacuum drying
Temperature be 35~45 DEG C.
As an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention, including with
Lower step：
1) preparation of graphene oxide：
By graphite, NaNO3And H2SO4To being placed in ice bath after mixing, KMnO is slowly added to4, and control reacting liquid temperature low
In 20 DEG C；Remove ice bath temperature is increased into 30~40 DEG C and 25~35min is kept, be slowly added to water and be stirred for 25~35min,
Add H2O2Yellowish-brown product is obtained after solution reaction, graphene oxide is obtained final product after centrifugation, washing, vacuum drying；
2) preparation of graphene oxide-chitosan compound adsorbing agent：
Chitosan powder is dissolved in glacial acetic acid solution and 1~3h of ultrasonic agitation prepares chitosan solution at room temperature, then
Glutaraldehyde water solution is added, the above-mentioned graphene oxide for preparing is subsequently adding, 85 are reacted in 45~55 DEG C of stirred in water bath
~95min, adjusts reaction solution pH to 9~10, is placed in 75~80 DEG C of water-bath and continues to wash to pH and be after reacting 50~70min
7, vacuum drying obtains final product compound adsorbent of the present invention.
The synthetic route of graphene oxide-chitosan compound adsorbing agent of the present invention is as shown in Figure 1.
As shown in Figure 1, substantial amounts of carboxyl functional group (- COOH) is contained in graphene oxide molecular structure, is handed in glutaraldehyde
In the presence of connection agent, it is easy to the amido functional group (- NH in chitosan structure2) there is recombination reaction, and hydrone is sloughed, shape
Into acid amides chemical bond.Graphene oxide-chitosan compound adsorbing agent in the present invention is prepared using solution blended process, should
Method is easy to operate, reaction solution is processed by mechanical agitation and the ultrasonically treated method being combined so that graphene oxide
Uniform and stable dispersion liquid can be formed with both shitosans.At present, in the preparation of graphene oxide and Chitosan Composites
In technology, the composite of acquisition is generally membranaceous or gel state, compared to the present invention prepare it is powdered for, be unfavorable for inhale
Adsorbent adds in attached experimentation.The present invention use preparation method have environmental protection, it is easy to operate, with low cost and
The advantage such as synthesis material is few.
As an a kind of specific embodiment of the preparation method of the compound adsorbent for removing nucleic plutonium of the present invention, including with
Lower step：
1) preparation of graphene oxide (GO)：
Take 4g graphite, 2g NaNO3With 92mL H2SO4Mixing is placed in ice bath；12g KMnO are slowly added under stirring4,
The speed for adding is controlled to avoid reacting liquid temperature more than 20 DEG C.Remove ice bath and solution temperature is risen into 35 DEG C or so holding 30min；
184mL water stirring 30min is slowly added to, 340mL H are subsequently adding2O2Solution (0.05wt%) terminates reaction.Obtain yellowish-brown product
Thing, centrifugation, is repeatedly washed using 10%HCl and deionized water, and graphene oxide is obtained final product after being vacuum dried at 40 DEG C；
2) preparation of graphene oxide-shitosan (GO-CTS) compound adsorbent：
0.4g shitosans (CTS) powder is first dissolved in 20mL glacial acetic acid solutions (volume fraction 2%) and is surpassed at room temperature
Sound stirs 2h to prepare chitosan solution (mass fraction 2%w/v)；50% aqueous solution of 3mL glutaraldehydes is added to CTS again molten
In liquid.0.3g graphene oxides are subsequently adding in above-mentioned solution, 90min is continuously stirred in 50 DEG C of water-baths, be slowly added to
The pH value of NaOH (0.1mol/L) regulation reaction solutions is placed in 80 DEG C of water-bath and continues to react 60min to 9~10.Black product
With ethanol and deionized water cyclic washing until pH is vacuum drying at 7,50 DEG C.
A kind of application of the compound adsorbent for removing nucleic plutonium, application of the compound adsorbent in nucleic plutonium is removed.
Used as an a kind of specific embodiment of the application of the compound adsorbent for removing nucleic plutonium of the present invention, regulation contains core
The pH of plain plutonium waste water, adds compound adsorbent, and vibration is adsorbed to nucleic plutonium.
As an a kind of specific embodiment of the application of the compound adsorbent for removing nucleic plutonium of the present invention, for initial live
It is 90Bq/L waste water containing plutonium to spend, and the optimal adsorption condition of compound adsorbent is：PH is 4, dosage for 1g/L, adsorption time are
30min, nucleic plutonium clearance is 95.11%.
Beneficial effects of the present invention：
Absorption of graphene oxide-shitosan (GO-CTS) compound adsorbent of the present invention to the nucleic plutonium in radioactive wastewater
Effect can reach the adsorbent for being adsorbed with nucleic separated after 95.11%, and liquid waste processing can be burned completely, be burnt
Only it is left block radioactive substance after burning, is not only convenient for the recycling of nucleic, and is expected to cancel former technological process
Cement solidification line, reach the purpose of radwaste " minimum ", greatly simplify nuclear waste water processing technological flow, reduction radiation
Property waste storage space, for it is more efficient rapidly removal nuclear industry waste water in nucleic plutonium more preferably technological approaches and reality are provided
Basis is tested, is that the strategy of sustainable development of the energy lays the foundation, with important theory significance and engineering application value.
Brief description of the drawings
Fig. 1 is the synthetic route chart of graphene oxide-chitosan compound adsorbing agent of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1
The synthetic route of the present embodiment graphene oxide-chitosan compound adsorbing agent as shown in figure 1, specific preparation method such as
Under：
1) preparation of graphene oxide (GO)：
Take 4g graphite, 2g NaNO3With 92mL H2SO4Mixing is placed in ice bath；12g KMnO are slowly added under stirring4,
The speed for adding is controlled to avoid reacting liquid temperature more than 20 DEG C.Remove ice bath and solution temperature is risen into 35 DEG C or so holding 30min；
184mL water stirring 30min is slowly added to, 340mL H are subsequently adding2O2Solution (0.05wt%) terminates reaction.Obtain yellowish-brown product
Thing, centrifugation, is repeatedly washed using 10%HCl and deionized water, and graphene oxide is obtained final product after being vacuum dried at 40 DEG C；
2) preparation of graphene oxide-shitosan (GO-CTS) compound adsorbent：
0.4g shitosans (CTS) powder is first dissolved in 20mL glacial acetic acid solutions (volume fraction is 2%v/v) and in room temperature
Lower ultrasonic agitation 2h prepares chitosan solution (mass fraction is 2%)；50% aqueous solution of 3mL glutaraldehydes is added to again
In CTS solution.0.3g graphene oxides are subsequently adding in above-mentioned solution, 90min are continuously stirred in 50 DEG C of water-baths, it is slow plus
Enter the pH value of NaOH (0.1mol/L) regulation reaction solutions to 9~10, be placed in 80 DEG C of water-bath and continue to react 60min.Black is produced
Thing ethanol and deionized water cyclic washing are until pH obtains final product graphene oxide-shitosan (GO- to be vacuum dried at 7,50 DEG C
CTS) compound adsorbent.
Embodiment 2
The synthetic route of the present embodiment graphene oxide-chitosan compound adsorbing agent as shown in figure 1, specific preparation method such as
Under：
1) preparation of graphene oxide (GO)：
Take 4g graphite, 2g NaNO3With 92mL H2SO4Mixing is placed in ice bath；12g KMnO are slowly added under stirring4,
The speed for adding is controlled to avoid reacting liquid temperature more than 20 DEG C.Remove ice bath and solution temperature is risen into 35 DEG C or so holding 30min；
184mL deionized waters stirring 30min is slowly added to, 340mL H are subsequently adding2O2Solution (0.05wt%) terminates reaction.Obtain Huang
Tan product, centrifugation, is repeatedly washed using 10%HCl and deionized water, and graphene oxide is obtained final product after being vacuum dried at 40 DEG C；
2) preparation of graphene oxide-shitosan (GO-CTS) compound adsorbent：
First 0.5g shitosans (CTS) powder is dissolved in 30mL glacial acetic acid solutions (volume fraction is 2%), and at room temperature
Ultrasonic agitation 2.5h prepares chitosan solution；50% aqueous solution of 4mL glutaraldehydes is added in CTS solution again.Then plus
Enter 0.6g graphene oxides in above-mentioned solution, 95min is continuously stirred in 52 DEG C of water-baths, be slowly added to NaOH (0.1mol/L)
The pH value of reaction solution is adjusted to 9, is placed in 82 DEG C of water-bath and is continued to react 65min.Black product ethanol and deionized water are anti-
After backwashing is washed until pH obtains final product graphene oxide-shitosan (GO-CTS) compound adsorbent to be vacuum dried at 7,50 DEG C.
Embodiment 3
The synthetic route of the present embodiment graphene oxide-chitosan compound adsorbing agent as shown in figure 1, specific preparation method such as
Under：
1) preparation of graphene oxide (GO)：
Take 4g graphite, 2g NaNO3With 92mL H2SO4Mixing is placed in ice bath；12g KMnO are slowly added under stirring4,
The speed for adding is controlled to avoid reacting liquid temperature more than 20 DEG C.Remove ice bath and solution temperature is risen into 35 DEG C or so holding 30min；
184mL water stirring 30min is slowly added to, 340mL H are subsequently adding2O2Solution (0.05wt%) terminates reaction.Obtain yellowish-brown product
Thing, centrifugation, is repeatedly washed using 10%HCl and deionized water, and graphene oxide is obtained final product after being vacuum dried at 40 DEG C；
2) preparation of graphene oxide-shitosan (GO-CTS) compound adsorbent：
First 0.8g shitosans (CTS) powder is dissolved in 40mL glacial acetic acid solutions (volume fraction is 2%), and at room temperature
Ultrasonic agitation 3h prepares chitosan solution；50% aqueous solution of 5mL glutaraldehydes is added in CTS solution again.It is subsequently adding
0.8g graphene oxides continuously stir 95min in above-mentioned solution in 55 DEG C of water-baths, are slowly added to NaOH (0.1mol/L) tune
The pH value of reaction solution is saved to 10, is placed in 85 DEG C of water-bath and is continued to react 65min.Black product ethanol and deionized water are repeatedly
Washing is until pH obtains final product graphene oxide-shitosan (GO-CTS) compound adsorbent to be vacuum dried at 7,50 DEG C.
Application example of the graphene oxide-chitosan compound adsorbing agent of the present invention in nucleic plutonium is removed.
The radiation waste water of plutonium containing nucleic that initial activity is 90Bq/L is taken, pH is adjusted with HCl and NaOH solution, add embodiment
1 compound adsorbent for preparing, being placed in shaking table carries out vibration and adsorbs and filter, and the nucleic plutonium concentration in filtrate is carried out with alpha spectrometer
Analysis and measure.Influences of the research pH, compound adsorbent addition and adsorption time to nucleic plutonium adsorption effect respectively.It is different
To the removal effect of nucleic plutonium, (result of table 1 is only to change pH, the addition of compound adsorbent and a suction as shown in table 1 under pH
The attached time is all identical).
Removal effect under the different solutions pH value of table 1 to plutonium is contrasted
| pH | 2 | 4 | 5 | 6 | 8 | 9 |
| Go plutonium rate (%) | 77.5 | 90.56 | 74.33 | 76.83 | 67.33 | 81.72 |
From upper table 1, when radioactive wastewater pH is 4, graphene oxide-chitosan compound adsorbing agent of the present invention is to core
The clearance of plain plutonium can reach 90.56% and under other pH compound adsorbent there was only 70%% to the clearance of nucleic plutonium~
80%, illustrate that compound adsorbent is influenceed larger by pH.
The pH of radioactive wastewater is adjusted to 4, the addition of graphene oxide-chitosan compound adsorbing agent of the present invention is studied
To the removal effect of nucleic plutonium, its result it is as shown in table 2 below (result of table 2 be only change the addition of compound adsorbent, pH with
And adsorption time is all identical).
The different composite adsorbent addition of table 2 is contrasted to the removal effect of plutonium
| GO-CTS dosages (g/L) | 0.05 | 0.25 | 0.5 | 0.75 | 1 | 1.20 | 1.50 |
| Remove plutonium rate/% | 88.61 | 91.22 | 92.22 | 93.67 | 95.11 | 95.96 | 96.17 |
From upper table 2, when compound adsorbent is when being incorporated as 1g/L, graphene oxide-shitosan of the present invention is compound to be inhaled
The attached dose of clearance to nucleic plutonium can reach 95.11%, and when the addition of compound adsorbent is less than 1g/L, with absorption
The raising of agent addition, the clearance of nucleic plutonium increases obvious, but addition is when being more than 1g/L, although with adsorbent plus
The increase clearance for entering amount can be incremented by, but its incremental speed slows down.The composite adsorption dosage of input is more, and nucleic plutonium is removed into
This is also higher, in order to take into account cost and removal efficiency, the dosage of compound adsorbent is set as into 1g/L.
The pH of radioactive wastewater is set as 4, the dosage of compound adsorbent is set as 1g/L, and adsorption time is to nucleic plutonium
Removal effect, its result is as shown in table 3 below.
The different adsorption times of table 3 compare the removal effect of plutonium
| Adsorption time (min) | 5 | 10 | 30 | 60 | 90 | 120 |
| Go plutonium rate (%) | 93.67 | 94.22 | 95.11 | 95.77 | 96.03 | 96.44 |
From upper table 3, when adsorption time is 30min, graphene oxide-chitosan compound adsorbing agent of the present invention is to nucleic
The clearance of plutonium can reach 95.11%, and when adsorption time is less than 30min, with the growth of adsorption time, nucleic plutonium
Clearance increase it is obvious, but adsorption time be more than 30min when, although the increase clearance of adsorption time can be incremented by, but its
Incremental speed slows down.Adsorption time is more long, and nucleic plutonium removal cost is also higher, in order to take into account cost and removal efficiency, will
The adsorption time of compound adsorbent is set as 1g/L.
Therefore, in sum, to the radiation waste water of plutonium containing nucleic that initial activity is 90Bq/L, graphene oxide of the present invention-
Shitosan is to the optimal adsorption condition of plutonium：PH is 4, dosage is 1g/L, adsorption time is 30min, is reached with this understanding
To maximum go plutonium rate be 95.11%.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. it is a kind of remove nucleic plutonium compound adsorbent, it is characterised in that the adsorbent is by graphene oxide and shitosan
The compound adsorbent of composition.
2. as claimed in claim 1 it is a kind of remove nucleic plutonium compound adsorbent, it is characterised in that the compound adsorbent is by wrapping
Shitosan, glutaraldehyde, the raw material of graphene oxide is included to be prepared under water bath condition.
3. as claimed in claim 1 it is a kind of remove nucleic plutonium compound adsorbent preparation method, it is characterised in that including：Will
Glutaraldehyde water solution is added in chitosan solution, is subsequently adding graphene oxide, is reacted in 45~55 DEG C of stirred in water bath
85~95min, adjusts reaction solution pH to 9~10, is placed in 75~80 DEG C of water-bath and continues to be washed to pH after reacting 50~70min
It is 7, vacuum drying obtains final product compound adsorbent of the present invention.
4. as claimed in claim 3 it is a kind of remove nucleic plutonium compound adsorbent preparation method, it is characterised in that the shell gather
Sugar juice is that Chitosan powder is dissolved in glacial acetic acid solution, and ultrasonic agitation is prepared for 1~3 hour at room temperature；Wherein, shell
The quality of glycan powder is (0.4g~0.8g) with the volume ratio of glacial acetic acid solution:(20ml~40ml).
5. as described in claim 3 or 4 it is a kind of remove nucleic plutonium compound adsorbent preparation method, it is characterised in that it is described
Chitosan powder is 1 with the mass ratio of graphene oxide:2~4:3；The volume ratio of the glutaraldehyde water solution and glacial acetic acid solution
It is 3~5:20~40.
6. as claimed in claim 3 it is a kind of remove nucleic plutonium compound adsorbent preparation method, it is characterised in that the oxidation
The preparation method of Graphene is：By graphite, NaNO3And H2SO4After mixing as ice bath in, be slowly added to KMnO4, and control anti-
Liquid temperature degree is answered to be less than 20 DEG C；Remove ice bath temperature is increased into 30~40 DEG C and 25~35min is kept, sequentially add water and H2O2
Yellowish-brown product is obtained after solution reaction, graphene oxide is obtained final product after centrifugation, washing, vacuum drying.
7. as claimed in claim 6 it is a kind of remove nucleic plutonium compound adsorbent preparation method, it is characterised in that the stone
Ink, NaNO3、KMnO4Mass ratio be 4：2：12；The quality and H of the graphite2SO4Volume ratio be 4g:92ml；It is described
H2SO4, water, H2O2The volume ratio of solution is 92:184:340.
8. a kind of application of the compound adsorbent for removing nucleic plutonium as claimed in claim 1, it is characterised in that the composite adsorption
Application of the agent in nucleic plutonium is removed.
9. a kind of application of the compound adsorbent for removing nucleic plutonium as claimed in claim 8, it is characterised in that regulation contains nucleic
The pH of plutonium waste water, adds compound adsorbent, and vibration is adsorbed to nucleic plutonium.
10. a kind of application of the compound adsorbent for removing nucleic plutonium as claimed in claim 9, it is characterised in that for initial live
It is 90Bq/L waste water containing plutonium to spend, and the optimal adsorption condition of compound adsorbent is：PH is 4, dosage for 1g/L, adsorption time are
30min, nucleic plutonium clearance is 95.11%.
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