CN108380178A - A kind of preparation method of restoration of the ecosystem agent and its absorbing process to radionuclide - Google Patents

A kind of preparation method of restoration of the ecosystem agent and its absorbing process to radionuclide Download PDF

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Publication number
CN108380178A
CN108380178A CN201810201321.6A CN201810201321A CN108380178A CN 108380178 A CN108380178 A CN 108380178A CN 201810201321 A CN201810201321 A CN 201810201321A CN 108380178 A CN108380178 A CN 108380178A
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Prior art keywords
biological carbon
restoration
agent
magnetic
algae
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CN201810201321.6A
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Chinese (zh)
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秋晓东
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秋晓东
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Priority to CN201810201321.6A priority Critical patent/CN108380178A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28009Magnetic properties
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other processes not covered before; Features of destructive distillation processes in general
    • C10B57/08Non-mechanical pretreatment of the charge, e.g. desulfurization
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other processes not covered before; Features of destructive distillation processes in general
    • C10B57/08Non-mechanical pretreatment of the charge, e.g. desulfurization
    • C10B57/10Drying
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04Treating liquids
    • G21F9/06Processing
    • G21F9/12Processing by absorption; by adsorption; by ion-exchange
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00Aspects relating to sorbent materials
    • B01J2220/40Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/4843Algae, aquatic plants or sea vegetals, e.g. seeweeds, eelgrass
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel

Abstract

Include the two big step of preparation that carbonization and magnetic biological carbon are carried out to natural biomass the invention discloses a kind of preparation method of restoration of the ecosystem agent and its to the absorbing process of radionuclide;It can be generated under nitrogen calcining containing there are many biological carbons of surface functional groups using water plants biomass such as algae; there is high efficiency of additive capability to U (VI); it the U (VI) of absorption and it can be reduced into U (IV) by magnetite nanometric particles in magnetic biological carbon generates the sediments such as U (IV) O2 (s); to reach fixed suction-operated; and; the raw material sources of biological carbon are abundant; generally existing; turn waste into wealth; integrated artistic is simple, application easy to spread.

Description

A kind of preparation method of restoration of the ecosystem agent and its absorbing process to radionuclide
Technical field
The present invention relates to ecological agent technical field, the preparation method of specially a kind of restoration of the ecosystem agent and its to radioactivity The absorbing process of nucleic.
Background technology
The uranium of oxidation state is (for example, UO2 2+) be the neighbouring earth's surface generally existing of uranium mine a kind of pollutant.Due to UO2 2+Water Dissolubility is good, and can form various water-soluble complex compounds with CO2 in hydrone and air at low and high pH, therefore, Uranyl is easy to find migration and conversion in earth's surface.At present it has been proven that it is one that shallow-layer, which is polluted U (VI) the reduction U (IV) of aquifer, The effective ways of the fixed uranium of kind, and Fe (II) can well restore uranium in nano ferriferrous oxide.Then, nanometer four aoxidizes Three-iron is easy to reunite in aqueous solution and aoxidize since surface energy is big and chemism is strong.Meanwhile the major lake eutrophication in China Change is very long serious, thus generates the water plants such as a large amount of algae and has become reluctant pollutant.However, these biomass exist The lower biological carbon that can generate the surface functional groups containing there are many of nitrogen calcining, has fine adsorption effect to U (VI).
Invention content
The purpose of the present invention is to provide a kind of preparation method of restoration of the ecosystem agent and its to the absorption work of radionuclide Skill, the magnetic biological carbon prepared has absorption and reducing power well to U (VI), while the raw material sources of biological carbon are rich Richness, generally existing turn waste into wealth, and this is simple for process, application easy to spread, to solve mentioned above in the background art ask Topic.
To achieve the above object, the present invention provides the following technical solutions:A kind of preparation method of restoration of the ecosystem agent, including with Lower step:
S1:A large amount of fresh algae are collected in the serious Chaohu of eutrophication, and by the algae centrifugal dehydration of collection, then made It is repeatedly washed with distilled water and is centrifugally separating to obtain the high algae of purity;
S2:The biomass purified in S1 is dissolved in 100mL deionized waters and obtains dirty solution, is then being sufficiently stirred lower incite somebody to action 5.0g frerrous chlorides are added in above-mentioned mixed liquor, react 24 hours, are centrifuged after adsorption equilibrium, finally in vacuum at room temperature Freeze-drying;
S3:The solid that will be dried in S2 grinds and stirs evenly, and uniformly mixed solid is then placed on quartz surfaces ware In, it is placed in tubular type Muffle furnace, and two sections of sealings are passed through the air in 30 minutes drains of nitrogen;
S4:In the case where being continuously passed through condition of nitrogen gas by 2.5ml/min, 700 ° are heated rapidly to the heating speed of 5 °/s, so Reaction 1h rapid cleavages convert biomass into biological carbon afterwards, meanwhile, Fe (II) is converted into magnetic under high temperature and nitrogen Fe3O4, a small amount of chlorion is at high temperature with HCl (g) or Cl2(g) form volatilization;
S5:It is cooled to room temperature under nitrogen protection and obtains the restoration of the ecosystem agent of magnetic biological carbon.
Preferably, the restoration of the ecosystem agent of the magnetic biological carbon is made of the element of following mass fraction accounting: 036.93%, C 21.53, N 8.74%, H 4.25%, Fe 28.68%.
The present invention provides another technical solution:A kind of restoration of the ecosystem agent utilizes the absorbing process of radionuclide Biological carbon surface exhibiting high surface functional group has a high efficiency of additive capability to U (VI) in restoration of the ecosystem agent, the U (VI) of absorption and can be with It is reduced into U (IV) by magnetite nanometric particles in magnetic biological carbon and generates U (IV) O2 (s) sediments, to reach fixed absorption Effect.
Compared with prior art, the beneficial effects of the invention are as follows:
The preparation method of this restoration of the ecosystem agent and its absorbing process to radionuclide utilize the water plants such as algae Biomass nitrogen calcining under can generate containing there are many surface functional groups biological carbon, to U (VI) have well absorption and Reducing power, while the raw material sources of biological carbon are abundant, generally existing turns waste into wealth, and integrated artistic is simple, easy to spread to answer With.
Description of the drawings
Fig. 1 is the magnetic biological carbon phenogram of the synthesis of the present invention;
Fig. 2 is the scanning electron microscope (SEM) photograph of the present invention;
Fig. 3 is the magnetization curve figure of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Embodiment one:
- 3 are please referred to Fig.1, a kind of preparation method of restoration of the ecosystem agent includes the following steps:
The first step:It is carbonized to natural biomass, a large amount of fresh algae is collected in the serious Chaohu of eutrophication;It will Then the algae centrifugal dehydration of collection is repeatedly washed centrifugation using distilled water and waits until the high algae of purity, by above-mentioned purifying Biomass dissolve in 100mL deionized waters and obtain dirty solution, then be sufficiently stirred lower by 5.0g frerrous chlorides and be added it is above-mentioned In mixed liquor, reacts 24 hours, centrifuged after adsorption equilibrium, finally in vacuum freeze drying at room temperature;
Second step:Prepare the restoration of the ecosystem agent of magnetic biological carbon;By the solid of above-mentioned drying, grinds and stir evenly;So Uniformly mixed solid is placed in quartz surfaces ware afterwards, is placed in tubular type Muffle furnace;Two sections of sealings are passed through nitrogen to arrange within 30 minutes Except the air in pipe;Then it is continuously being passed through under condition of nitrogen gas (2.5ml/min), is being heated rapidly to the heating speed of 5 °/s It 700 °, then reacts 1h rapid cleavages and converts biomass into biological carbon, meanwhile, Fe (II) is converted into magnetic under high temperature and nitrogen The Fe of property3O4, a small amount of chlorion is at high temperature with HCl (g) or Cl2(g) form volatilization, it is finally cold under nitrogen protection But it arrives room temperature and obtains magnetic biological carbon.
Embodiment two:
It is described based on above-described embodiment one, a kind of absorbing process of restoration of the ecosystem agent to radionuclide, profit is also provided There is high efficiency of additive capability to U (VI) with biological carbon surface exhibiting high surface functional group in restoration of the ecosystem agent, the U (VI) of absorption and can U (IV) O2 (s) sediments are generated to be reduced into U (IV) by magnetite nanometric particles in magnetic biological carbon, to reach fixed suction Attached effect.
In summary:The preparation method of restoration of the ecosystem agent provided by the invention and its absorbing process to radionuclide, It can generate the biological carbon of the surface functional groups containing there are many using water plants biomass such as algae under nitrogen calcining, to U (VI) there is absorption and reducing power well, while the raw material sources of biological carbon are abundant, generally existing turns waste into wealth, whole Body technology is simple, application easy to spread.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (3)

1. a kind of preparation method of restoration of the ecosystem agent, which is characterized in that include the following steps:
S1:A large amount of fresh algae are collected in the serious Chaohu of eutrophication, and by the algae centrifugal dehydration of collection, reuse steaming Repeatedly washing is centrifugally separating to obtain the high algae of purity to distilled water;
S2:The biomass purified in S1 is dissolved in 100mL deionized waters and obtains dirty solution, then be sufficiently stirred it is lower by 5.0g Frerrous chloride is added in above-mentioned mixed liquor, reacts 24 hours, is centrifuged after adsorption equilibrium, finally in vacuum refrigeration at room temperature It is dry;
S3:The solid that will be dried in S2 grinds and stirs evenly, and then uniformly mixed solid is placed in quartz surfaces ware, It is placed in tubular type Muffle furnace, and two sections of sealings are passed through the air in 30 minutes drains of nitrogen;
S4:In the case where being continuously passed through condition of nitrogen gas by 2.5ml/min, 700 ° are heated rapidly to the heating speed of 5 °/s, then instead 1h rapid cleavages are answered to convert biomass into biological carbon, meanwhile, Fe (II) is converted into magnetic Fe under high temperature and nitrogen3O4, few The chlorion of amount is at high temperature with HCl (g) or Cl2(g) form volatilization;
S5:It is cooled to room temperature under nitrogen protection and obtains the restoration of the ecosystem agent of magnetic biological carbon.
2. a kind of preparation method of restoration of the ecosystem agent as described in claim 1, it is characterised in that:The life of the magnetic biological carbon State renovation agent is made of the element of following mass fraction accounting:O 36.93%, C 21.53, N 8.74%, H 4.25%, Fe 28.68%.
3. a kind of restoration of the ecosystem agent as described in claim 1 is to the absorbing process of radionuclide, which is characterized in that utilize life Biological carbon surface exhibiting high surface functional group has a high efficiency of additive capability to U (VI) in state renovation agent, the U (VI) of absorption and can be by Magnetite nanometric particles are reduced into U (IV) and generate U (IV) O2 (s) sediments in magnetic biological carbon, make to reach fixed absorption With.
CN201810201321.6A 2018-03-12 2018-03-12 A kind of preparation method of restoration of the ecosystem agent and its absorbing process to radionuclide Pending CN108380178A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109126719A (en) * 2018-11-06 2019-01-04 肖志宇 A kind of cyanobacteria agent for capturing and preparation method thereof containing the magnetic rice husk that is carbonized
CN109589913A (en) * 2018-11-09 2019-04-09 广州润方环保科技有限公司 A kind of magnetic bio charcoal and the preparation method and application thereof of quick removal methylene blue

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109126719A (en) * 2018-11-06 2019-01-04 肖志宇 A kind of cyanobacteria agent for capturing and preparation method thereof containing the magnetic rice husk that is carbonized
CN109589913A (en) * 2018-11-09 2019-04-09 广州润方环保科技有限公司 A kind of magnetic bio charcoal and the preparation method and application thereof of quick removal methylene blue

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