CN106902741A - A kind of compound adsorbent, preparation method and application for processing uranium-bearing radioactive wastewater - Google Patents
A kind of compound adsorbent, preparation method and application for processing uranium-bearing radioactive wastewater Download PDFInfo
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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
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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
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- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
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Abstract
The present invention provides a kind of compound adsorbent for processing uranium-bearing radioactive wastewater, belongs to technical field of radioactive wastewater treatment.The adsorbent is by including graphene oxide, KMnO4And the raw material of dense HCl ultrasound at 50~60 DEG C is prepared.The present invention also provides the preparation method of the compound adsorbent, including：Graphene oxide is mixed into the prepared graphene oxide suspension of ultrasound with deionized water, to adding KMnO in suspension4And dense HCl, and in 50~60 DEG C of 25~35min of ultrasound, obtained after centrifugation, washing, vacuum drying successively.The present invention also provides the application that the compound adsorbent removes nucleic uranium in uranium-bearing radioactive wastewater is processed.Compound adsorbent of the present invention has excellent absorption property to the nucleic uranium in low-activity waste water, separation of solid and liquid process after treatment are relatively simple, it is the uranium-containing waste water of 10mg/L for initial concentration, when it is 0.5g/L that pH is 4, dosage, compound adsorbent is that can reach 97.78% to the clearance of uranium in 5min, during 20~30min, the clearance of nucleic uranium is up to 99%.
Description
Technical field
The invention belongs to the processing technology field of uranium-bearing radioactive wastewater, specially a kind for the treatment of uranium-bearing radioactive wastewater
Compound adsorbent, preparation method and application.
Background technology
A large amount of radioactive wastewaters are produced in nuclear industry production process, wherein the nucleic uranium 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.From
For energy-saving and emission-reduction and environmental protection angle, using rather extensive absorption method handling process have it is easy to operate, with low cost,
Non-secondary pollution and the purification process advantage such as rapidly and efficiently.Therefore, good stability, function admirable and absorption with low cost
The preparation and research of material are always one of research emphasis of Spent Radioactive water treatment field, in the base of synthesizing new sorbing material
On plinth, the absorption property for lifting the material then has important practical significance and application value.
Graphene oxide is new carbon developed in recent years, and quickly and efficiently nucleic pollutant can be carried out
Purified treatment, makes radioactive pollution be minimized within the extremely short time, so as to avoid the diffusion and harm of nuclear pollution.However,
Dispersiveness is fabulous in water, and 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 processing uranium-bearing radioactive wastewater.
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 the compound adsorbent nucleic uranium is inhaled in uranium-bearing radioactive wastewater is processed
Application in attached removal.
The present invention is prepared a kind of to radioactivity with graphite, potassium permanganate and the concentrated sulfuric acid as synthesis material using ultrasonic method
The compound adsorbent that nucleic uranium in waste water is processed, is applied to the Adsorption of radioactive wastewater Radionuclide uranium.This
Goal of the invention is realized by following technical proposals：
A kind of compound adsorbent for processing uranium-bearing radioactive wastewater, the adsorbent is by graphene oxide and Mn oxide group
Into.
As an a kind of specific embodiment of the compound adsorbent for processing uranium-bearing radioactive wastewater of the present invention, the absorption
Agent is by including graphene oxide, KMnO4And the raw material of dense HCl ultrasound at 50~60 DEG C is prepared.
The present invention also provides a kind of preparation method of the compound adsorbent for processing uranium-bearing radioactive wastewater, including：Will oxidation
Graphene mixes the prepared graphene oxide suspension of ultrasound with deionized water, to adding KMnO in suspension4And dense HCl, and
In 50~60 DEG C of 25~35min of ultrasound, compound adsorbent of the present invention is obtained after centrifugation, washing, vacuum drying successively.
As an a kind of specific embodiment of the compound adsorbent preparation method for processing uranium-bearing radioactive wastewater of the present invention,
The graphene oxide, KMnO4And the additional proportion of dense HCl is (0.4~0.8) g：(0.5~1.5) g：(1~4) ml；Institute
Washing is stated to be washed using deionized water and ethanol；The vacuum drying temperature is 55~65 DEG C.
As an a kind of specific embodiment of the compound adsorbent preparation method for processing uranium-bearing radioactive wastewater of the present invention,
The preparation method of the graphene oxide is：By graphite, NaNO3And H2SO4After mixing as ice bath in, be slowly added to KMnO4,
And control reacting liquid temperature 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 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 compound adsorbent preparation method for processing uranium-bearing radioactive wastewater of the present invention,
The graphite, NaNO3、KMnO4Mass ratio be 2~6：1~3：10~14；The quality and H of the graphite2SO4Volume ratio be
(2~6g):(88~96) ml；The H2SO4, water, H2O2The volume ratio of solution is (88~96):(180~190):(330~
350)；The washing is washed using HCl and deionized water；The vacuum drying temperature is 35~45 DEG C.
As an a kind of specific embodiment of the compound adsorbent preparation method for processing uranium-bearing radioactive wastewater of the present invention,
Comprise the following steps：
(1) preparation of graphene oxide：
By graphite, NaNO3And H2SO4It is blended in beaker and is placed in ice bath, KMnO is slowly added under stirring4, control addition
Speed avoid reacting liquid temperature more than 20 DEG C, remove ice bath by solution temperature rise to 30~40 DEG C holding 25~35min, slowly
Add water to be stirred for 25~35min, add H2O2Yellowish-brown product is obtained after reaction, is obtained final product after centrifugation, washing, lower vacuum drying
Graphene oxide；
(2) preparation of graphene oxide-Mn oxide compound adsorbent：
The graphene oxide of above-mentioned preparation is mixed to be placed in deionized water graphene oxide suspension is obtained in ultra sonic bath,
To adding KMnO in suspension4With dense HCl, 25~35min of ultrasound at 50~60 DEG C, this is obtained final product after centrifugation, washing, vacuum drying
Invention compound adsorbent.
As an a kind of specific embodiment of the compound adsorbent preparation method for processing uranium-bearing radioactive wastewater of the present invention,
Comprise the following steps：
(1) preparation of graphene oxide：
Take 4g graphite, 2g NaNO3With 92mL H2SO4It is blended in beaker and is placed in ice bath, is slowly added under stirring
12gKMnO4, controls the speed for adding to avoid reacting liquid temperature more than 20 DEG C, removes ice bath and solution temperature is risen into 35 DEG C of holdings
30min, is slowly added to 184mL water and is stirred for 30min, adds 340mL H2O2Solution (0.05wt%) reaction obtains Huang after terminating
Tan product, centrifugation, is repeatedly washed using 10%HCl and deionized water, is vacuum dried at 40 DEG C；
(2) preparation of graphene oxide-Mn oxide compound adsorbent：
The 0.6g graphene oxides of above-mentioned preparation are mixed with 40ml deionized waters be placed in 2h in ultra sonic bath obtain aoxidize stone
Black alkene suspension, to addition 0.9g KMnO in suspension4HCl dense with 2ml, ultrasound 30min at 50~60 DEG C, centrifugation, spend from
Sub- water and ethanol washing for several times, collect black powder product, are vacuum dried at 60 DEG C.
The present invention also provides the application of the compound adsorbent, and the compound adsorbent is in uranium-bearing radioactive wastewater is processed
Remove the application of nucleic uranium.
Used as an a kind of specific embodiment for processing uranium-bearing radioactive wastewater compound adsorbent application of the present invention, regulation contains
The pH of uranium radioactive wastewater, adds compound adsorbent, and vibration is adsorbed to nucleic uranium.
As an a kind of specific embodiment for processing uranium-bearing radioactive wastewater compound adsorbent application of the present invention, for first
Beginning concentration is the uranium-containing waste water of 10mg/L, when it is 0.5g/L that pH is 4, dosage, removal of the compound adsorbent to uranium in 5min
Rate is that can reach 97.78%, and when it is 20~30min to vibrate adsorption time, the clearance of nucleic uranium is up to 99%.
The building-up process of graphene oxide-Mn oxide compound adsorbent is in the present invention：KMnO4With dense HCl in ultrasound
In the presence of ripple, there is redox reaction, generate Mn oxide, then bonding reaction occurs with graphene oxide, as finally
The graphene oxide for obtaining-Mn oxide compound adsorbent.
The specific adsorption process of adsorbent of the present invention is：
The radioactive wastewater of uranium containing nucleic that initial concentration is 10mg/L is taken, pH is adjusted to desirable value with HCl and NaOH solution,
The compound adsorbent prepared by the present invention is added, being placed in shaking table carries out vibration and adsorb and filter, the nucleic uranium concentration in filtrate
It is measured using micro-uranium analyzer.Research pH, compound adsorbent addition and adsorption time are to nucleic uranium absorption respectively
The influence of effect.
Compound adsorbent is prepared in the present invention and uses ultrasonic, the method has that generated time is short, energy consumption is low, green
The advantages of colour circle is protected, simple and easy to apply and required synthesis material lacks.Obtained adsorbent has excellent suction to uranium-bearing low level waste water
Attached effect, can obtain up to 99% uranium clearance within the short time under the conditions of optimal adsorption.
Beneficial effects of the present invention：
Graphene oxide of the present invention-Mn oxide compound adsorbent use ultrasonic prepare, with it is with low cost,
The advantage such as environment-friendly, synthesis material is few and easy to operate.Compound adsorbent of the present invention is to the nucleic in low-activity waste water
Uranium has excellent absorption property, and the separation of solid and liquid process after treatment are relatively simple, is the uranium-bearing of 10mg/L for initial concentration
Waste water, when it is 0.5g/L that pH is 4, dosage, compound adsorbent is that can reach 97.78% to the clearance of uranium in 5min, when
When vibration adsorption time is 20~30min, the clearance of nucleic uranium is up to 99%.
The present invention provide not only a kind of preparation method of more environmentally friendly and simple and feasible compound adsorbent, and to have
The nucleic uranium that effect is rapidly removed in nuclear industry waste water provides preferable technological approaches and experiment basis, is the sustainable development of the energy
Exhibition strategy lays the foundation, with important theory significance and engineering application value.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
The preparation method of the present embodiment graphene oxide-Mn oxide compound adsorbent is as follows：
(1) preparation of graphene oxide：
Take 4g graphite, 2g NaNO3With 92mL H2SO4It is blended in beaker and is placed in ice bath, is slowly added under stirring
12gKMnO4, control the speed for adding to avoid reacting liquid temperature more than 20 DEG C, remove ice bath and solution temperature is risen into 35 DEG C of holdings
30min, is slowly added to 184mL water and is stirred for 30min, adds 340mL H2O2Solution (0.05wt%) reaction obtains Huang after terminating
Tan product, centrifugation, is repeatedly washed using 10%HCl and deionized water, is vacuum dried at 40 DEG C；
(2) preparation of graphene oxide-Mn oxide compound adsorbent：
The 0.6g graphene oxides of above-mentioned preparation are mixed with 40ml deionized waters be placed in 2h in ultra sonic bath obtain aoxidize stone
Black alkene suspension, to addition 0.9g KMnO in suspension4HCl dense with 2ml, ultrasound 30min at 55 DEG C, centrifugation, use deionized water
With ethanol washing for several times, black powder product is collected, vacuum drying obtains final product the present embodiment compound adsorbent at 60 DEG C.
Embodiment 2
The preparation method of the present embodiment graphene oxide-Mn oxide compound adsorbent is as follows：
(1) preparation of graphene oxide：
Take 5g graphite, 3g NaNO3With 94mL H2SO4It is blended in beaker and is placed in ice bath, 10g is slowly added under stirring
KMnO4, control the speed for adding to avoid reacting liquid temperature more than 20 DEG C, remove ice bath and solution temperature is risen into 40 DEG C of holdings
25min, is slowly added to 185mL water and is stirred for 25min, adds 335mL H2O2Solution (0.05wt%) reaction obtains Huang after terminating
Tan product, centrifugation, is repeatedly washed using 10%HCl and deionized water, is vacuum dried at 40 DEG C；
(2) preparation of graphene oxide-Mn oxide compound adsorbent：
The 0.5g graphene oxides of above-mentioned preparation are mixed with 40ml deionized waters be placed in 2h in ultra sonic bath obtain aoxidize stone
Black alkene suspension, to addition 1.0g KMnO in suspension4HCl dense with 3ml, ultrasound 25min at 60 DEG C, centrifugation, use deionized water
With ethanol washing for several times, black powder product is collected, vacuum drying obtains final product the present embodiment compound adsorbent at 60 DEG C.
Embodiment 3
The preparation method of the present embodiment graphene oxide-Mn oxide compound adsorbent is as follows：
(1) preparation of graphene oxide：
Take 6g graphite, 1g NaNO3With 96mL H2SO4It is blended in beaker and is placed in ice bath, 11g is slowly added under stirring
KMnO4, control the speed for adding to avoid reacting liquid temperature more than 20 DEG C, remove ice bath and solution temperature is risen into 40 DEG C of holdings
30min, is slowly added to 184mL water and is stirred for 25min, adds 345mL H2O2Solution (0.05wt%) reaction obtains Huang after terminating
Tan product, centrifugation, is repeatedly washed using 10%HCl and deionized water, is vacuum dried at 45 DEG C；
(2) preparation of graphene oxide-Mn oxide compound adsorbent：
The 0.7g graphene oxides of above-mentioned preparation are mixed with 40ml deionized waters be placed in 2h in ultra sonic bath obtain aoxidize stone
Black alkene suspension, to addition 1.2g KMnO in suspension4HCl dense with 3ml, ultrasound 25min at 60 DEG C, centrifugation, use deionized water
With ethanol washing for several times, black powder product is collected, vacuum drying obtains final product the present embodiment compound adsorbent at 60 DEG C.
Embodiment 4
The preparation method of the present embodiment graphene oxide-Mn oxide compound adsorbent is as follows：
(1) preparation of graphene oxide：
Take 6g graphite, 3g NaNO3With 96mL H2SO4It is blended in beaker and is placed in ice bath, 14g is slowly added under stirring
KMnO4, control the speed for adding to avoid reacting liquid temperature more than 20 DEG C, remove ice bath and solution temperature is risen into 35 DEG C of holdings
30min, is slowly added to 190mL water and is stirred for 30min, adds 340mL H2O2Solution (0.05wt%) reaction obtains Huang after terminating
Tan product, centrifugation, is repeatedly washed using 10%HCl and deionized water, is vacuum dried at 35 DEG C；
(2) preparation of graphene oxide-Mn oxide compound adsorbent：
The 0.7g graphene oxides of above-mentioned preparation are mixed with 40ml deionized waters be placed in 2h in ultra sonic bath obtain aoxidize stone
Black alkene suspension, to addition 1.5g KMnO in suspension4HCl dense with 3ml, ultrasound 30min at 60 DEG C, centrifugation, use deionized water
With ethanol washing for several times, black powder product is collected, vacuum drying obtains final product the present embodiment compound adsorbent at 65 DEG C.
Application example of the graphene oxide of the present invention-Mn oxide compound adsorbent in nucleic uranium is removed.
The radiation waste water of uranium containing nucleic that initial activity is 10mg/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 uranium concentration in filtrate uses micro-uranium analyzer
It is measured.Influences of the research pH, compound adsorbent addition and adsorption time to nucleic uranium absorption effect respectively.Different pH
Under to the removal effect of nucleic uranium, (result of table 1 is only to change pH, the addition of compound adsorbent and absorption as shown in table 1
Time is all identical).
Removal effect under the different solutions pH of table 1 to nucleic uranium is contrasted
| pH | 2 | 3 | 4 | 5 | 6 |
| Go uranium rate (%) | 50.30 | 86.50 | 99.59 | 88.50 | 85.30 |
From upper table 1, when radioactive wastewater pH is 4, graphene oxide of the present invention-Mn oxide compound adsorbent pair
The clearance of nucleic uranium can reach 99.59%, and compound adsorbent only has 80% to the clearance of nucleic uranium under other pH
It is many, illustrate that compound adsorbent is influenceed larger by pH, and can be reached in the case where pH is 4 to nucleic uranium most up to absorption.
The pH of radioactive wastewater is adjusted to 4, the addition of graphene oxide-Mn oxide compound adsorbent of the present invention is studied
The removal effect to nucleic uranium is measured, its result is as shown in table 2 below, and (result of table 2 is addition, the pH for only changing compound adsorbent
And adsorption time is all identical).
The different composite adsorbent addition of table 2 is contrasted to the removal effect of uranium
| Adsorbent dosage (g/L) | 0.05 | 0.25 | 0.50 | 0.75 | 1.00 | 1.25 |
| Go uranium rate (%) | 75.00 | 94.80 | 99.59 | 99.66 | 99.71 | 99.79 |
From upper table 2, when compound adsorbent is when being incorporated as 0.5g/L, graphene oxide-Mn oxide of the present invention is multiple
Closing adsorbent can reach 99.59% to the clearance of nucleic uranium, and when the addition of compound adsorbent is less than 0.5g/L, with
The raising of adsorbent addition, the clearance of nucleic uranium increases obvious, but addition is when being more than 0.5g/L, although with
The increase clearance of adsorbent addition can be incremented by, but its incremental speed slows down.The composite adsorption dosage of input is more, nucleic
Uranium removal cost is also higher, in order to take into account cost and removal efficiency, the dosage of compound adsorbent is set as into 0.5g/L.
The pH of radioactive wastewater is set as 4, the dosage of compound adsorbent is set as 0.5g/L, and adsorption time is to nucleic
The removal effect of uranium, its result is as shown in table 3 below.
The different adsorption times of table 3 compare the removal effect of nucleic uranium
| Adsorption time (min) | 5 | 15 | 20 | 30 | 45 | 60 | 90 | 120 |
| Go uranium rate (%) | 97.78 | 98.07 | 99.17 | 99.59 | 99.04 | 99.20 | 99.60 | 99.40 |
From upper table 3, when adsorption time is 5min, graphene oxide of the present invention-Mn oxide compound adsorbent pair
The clearance of nucleic uranium can reach 97.78%, when adsorption time is 20~30min, go uranium rate to be up to more than 99%.And work as
When adsorption time is less than 30min, with the growth of adsorption time, the clearance of nucleic uranium increases obvious, but adsorption time
During more than 30min, the clearance of nucleic uranium is maintained at a stable level, not prominent raising effect.Adsorption time
More long, nucleic uranium removal cost is also higher, in order to take into account cost and removal efficiency, the adsorption time of compound adsorbent is set
It is 20~30min.
In sum, it is 10mg/L containing uranium solution, when it is 0.5g/L that pH is 4, dosage, 5min for initial concentration
Interior compound adsorbent of the present invention is that can reach 97.78% to the clearance of uranium, when it is 20~30min to adsorb duration of oscillation, is gone
Uranium rate is up to more than 99%.
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. a kind of compound adsorbent for processing uranium-bearing radioactive wastewater, it is characterised in that the adsorbent by graphene oxide and
Mn oxide is constituted.
2. as claimed in claim 1 it is a kind of process uranium-bearing radioactive wastewater compound adsorbent, it is characterised in that the adsorbent
By including graphene oxide, KMnO4And the raw material of dense HCl ultrasound at 50~60 DEG C is prepared.
3. as claimed in claim 1 it is a kind of process uranium-bearing radioactive wastewater compound adsorbent preparation method, it is characterised in that
Including：Graphene oxide is mixed into the prepared graphene oxide suspension of ultrasound with deionized water, to adding KMnO in suspension4With
And dense HCl, and in 50~60 DEG C of 25~35min of ultrasound, of the invention being combined is obtained after centrifugation, washing, vacuum drying successively and is inhaled
Attached dose.
4. as claimed in claim 3 it is a kind of process uranium-bearing radioactive wastewater compound adsorbent preparation method, it is characterised in that
The graphene oxide, KMnO4And the additional proportion of dense HCL is (0.4~0.8) g：(0.5~1.5) g：(1~4) ml；Institute
Washing is stated to be washed using deionized water and ethanol；The vacuum drying temperature is 55~65 DEG C.
5. as claimed in claim 3 it is a kind of process uranium-bearing radioactive wastewater compound adsorbent preparation method, its feature son exists
In the preparation method of the graphene oxide is：By graphite, NaNO3And H2SO4After mixing as ice bath in, be slowly added to
KMnO4, and control reacting liquid temperature to be less than 20 DEG C；Ice bath is removed temperature is increased into 30~40 DEG C and 25~35min is kept, according to
It is secondary to add water and H2O2Yellowish-brown product is obtained after solution reaction, graphene oxide is obtained final product after centrifugation, washing, vacuum drying.
6. as claimed in claim 5 it is a kind of process uranium-bearing radioactive wastewater compound adsorbent preparation method, it is characterised in that
The graphite, NaNO3、KMnO4Mass ratio be 2~6：1~3：10~14；The quality and H of the graphite2SO4Volume ratio be
(2~6g):(88~96) ml；The H2SO4, water, H2O2The volume ratio of solution is (88~96):(180~190):(330~
350)；The washing is washed using HCl and deionized water；The vacuum drying temperature is 35~45 DEG C.
7. as described in any one of claim 2 to 6 it is a kind of process uranium-bearing radioactive wastewater compound adsorbent preparation method, its
It is characterised by, comprises the following steps：
1) preparation of graphene oxide：By graphite, NaNO3And H2SO4Be blended in beaker and be placed in ice bath, stirring it is lower slow plus
Enter KMnO4, control the speed for adding to avoid reacting liquid temperature more than 20 DEG C, remove ice bath and solution temperature is risen into 30~40 DEG C of guarantors
25~35min is held, water is slowly added to and is stirred for 25~35min, add H2O2Yellowish-brown product is obtained after reaction, be centrifuged, wash,
Graphene oxide is obtained final product after lower vacuum drying；
2) preparation of graphene oxide-Mn oxide compound adsorbent：The graphene oxide of above-mentioned preparation and deionized water are mixed
Conjunction is placed in and graphene oxide suspension is obtained in ultra sonic bath, to adding KMnO in suspension4With dense HCl, ultrasound at 50~60 DEG C
25~35min, compound adsorbent of the present invention is obtained final product after centrifugation, washing, vacuum drying.
8. a kind of application of the compound adsorbent for processing uranium-bearing radioactive wastewater as claimed in claim 1, it is characterised in that described
Compound adsorbent removes the application of nucleic uranium in uranium-bearing radioactive wastewater is processed.
9. a kind of application of the compound adsorbent for processing uranium-bearing radioactive wastewater as claimed in claim 8, it is characterised in that regulation
The pH of uranium-bearing radioactive wastewater, adds compound adsorbent, and vibration is adsorbed to nucleic uranium.
10. a kind of application of the compound adsorbent for processing uranium-bearing radioactive wastewater as claimed in claim 9, it is characterised in that right
It is the uranium-containing waste water of 10mg/L in initial concentration, when it is 0.5g/L that pH is 4, dosage, compound adsorbent is to uranium in 5min
Clearance is that can reach 97.78%, and when it is 20~30min to vibrate adsorption time, the clearance of nucleic uranium is up to 99%.
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| CN108620035A (en) * | 2018-05-24 | 2018-10-09 | 中国工程物理研究院材料研究所 | A kind of the removal adsorbent and its application process of nucleic uranium |
| CN110102258A (en) * | 2019-05-15 | 2019-08-09 | 华北电力大学 | The synthetic method and application of three-dimensional manganese dioxide and graphene oxide compound adsorbent |
| CN110449131A (en) * | 2019-08-20 | 2019-11-15 | 福建省长汀金龙稀土有限公司 | Remove the adsorbent and minimizing technology of radiothorium and uranium impurity in high pure rare earth product |
| CN110787778A (en) * | 2019-11-01 | 2020-02-14 | 中国工程物理研究院材料研究所 | Modified fiber ball filtering and adsorbing material and preparation method and application thereof |
| CN112973640A (en) * | 2021-03-24 | 2021-06-18 | 兰州大学 | Preparation method of 3D printing reduced graphene oxide filter element for treating uranium-containing wastewater |
| CN113908807A (en) * | 2021-11-29 | 2022-01-11 | 北京师范大学 | Nitrogen-doped modified graphene electrode material for adsorbing electroreduction radionuclide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108620035A (en) * | 2018-05-24 | 2018-10-09 | 中国工程物理研究院材料研究所 | A kind of the removal adsorbent and its application process of nucleic uranium |
| CN108620035B (en) * | 2018-05-24 | 2020-09-18 | 中国工程物理研究院材料研究所 | Nuclide uranium removal adsorbent and application method thereof |
| CN110102258A (en) * | 2019-05-15 | 2019-08-09 | 华北电力大学 | The synthetic method and application of three-dimensional manganese dioxide and graphene oxide compound adsorbent |
| CN110449131A (en) * | 2019-08-20 | 2019-11-15 | 福建省长汀金龙稀土有限公司 | Remove the adsorbent and minimizing technology of radiothorium and uranium impurity in high pure rare earth product |
| CN110449131B (en) * | 2019-08-20 | 2022-10-28 | 福建省长汀金龙稀土有限公司 | Adsorbent for removing radioactive thorium and uranium impurities in high-purity rare earth product and removing method |
| CN110787778A (en) * | 2019-11-01 | 2020-02-14 | 中国工程物理研究院材料研究所 | Modified fiber ball filtering and adsorbing material and preparation method and application thereof |
| CN112973640A (en) * | 2021-03-24 | 2021-06-18 | 兰州大学 | Preparation method of 3D printing reduced graphene oxide filter element for treating uranium-containing wastewater |
| CN112973640B (en) * | 2021-03-24 | 2022-04-15 | 兰州大学 | Preparation method of 3D printing reduced graphene oxide filter element for treating uranium-containing wastewater |
| CN113908807A (en) * | 2021-11-29 | 2022-01-11 | 北京师范大学 | Nitrogen-doped modified graphene electrode material for adsorbing electroreduction radionuclide |
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