CN109967033A - A kind of modified rice husk biomass carbon and preparation method thereof - Google Patents
A kind of modified rice husk biomass carbon and preparation method thereof Download PDFInfo
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- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
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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
- B01J20/02—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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- 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
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- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
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- C02F2101/00—Nature of the contaminant
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Abstract
The present invention relates to a kind of rice husk biomass carbons and preparation method thereof comprising following steps: S1. drying: by the rice husk sieving removal impurity of collection, and being put into baking oven and dries；S2. high temperature pyrolysis: by the rice husk in step S1 it is cooling after, be put into tube furnace, heat up pyrolysis in nitrogen atmosphere, obtains biomass carbon；S3. potassium permanganate is modified: biomass carbon obtained in step S2 being ground to and sifted out little particle biomass carbon and potassium permanganate and deionized water is placed in concussion in oscillator and makes the fully oxidized biomass carbon surface of potassium permanganate, then remain in the impurity on biomass carbon after rinsing out oxidation with deionized water, modified rice husk biomass carbon is obtained after drying.It is an object of the invention to using rice husk as raw material, programmed temperature method is pyrolyzed under nitrogen atmosphere, using potassium permanganate as improved chemical, preparation is modified to rice husk biomass carbon, and it is applied in PAHs naphthalene pollution processing, the adsorption effect of biomass carbon is further increased, and the pollution control of water body and soil can be suitable for simultaneously.
Description
Technical field
The present invention relates to a kind of modified rice husk biomass carbon and preparation method thereof, belong to the preparation of biomass carbon adsorbent material,
Water pollution and soil pollution process field.
Background technique
Due to the increase of AND ENERGY RESOURCES CONSUMPTION IN CHINA in recent years and the use of a large amount of motor vehicles, China is faced with very serious
PAHs pollution, the burst size of national PAHs accounts for the 20% of the total burst size in the world, and PAHs is by the U.S. in 16 including naphthalene
Environmental Protection Agency is classified as priority pollutants, with high stability and strongly carcinogenic, teratogenesis and mutagenesis.And PAHs
It is widely distributed in the various surrounding mediums such as water, air, soil, deposit, natural environment and human health is caused seriously
Volume harm.The method of organic matter includes chemical method (such as absorption method) in traditional processing water and soil, (such as soil is burnt physical method
Burn, soil rinses), bioanalysis (microorganism remediation, phytoremediation and the plant combined reparation of microorganism -), since physical method often relates to
And complex device, it is at high cost；Bioanalysis microorganism is higher to environmental requirement, and it is longer to administer the time.Currently, physically or chemically
The equipment and instrument that is related to of absorption method it is simple, processing technique is easy, therefore cost is relatively low, and process cycle is also short, therefore obtains extensively
Concern.The adsorbent of exploitation Cheap highly effective, which is used to handle the water body of PAHs pollution and soil, also becomes a big hot spot.
All kinds of Carbon Materials are to study more organic matter adsorbent at present.Traditional Carbon Materials such as active carbon, it is main
Ingredient is carbon, and surface functional group is abundant, hole is flourishing, and large specific surface area has preferable suction-operated to organic matter, still
It is expensive, regeneration is complicated, and separation is difficult, therefore its application is restricted.It is various in order to overcome the shortcomings of traditional Carbon Materials
Novel charcoal material with graphene, carbon nanotube and chitosan etc. for raw material shows higher adsorption capacity, but it is synthesized
Method is mostly extremely complex, and price costly, and is also easy to produce secondary pollution, is difficult to widely apply at present.Therefore, price is selected
It is cheap even as the raw material of waste and easy Carbon Materials preparation process, the Carbon Materials for producing super quality and competitive price are many sections
Worker is ground all to consider the problems of.But the most adsorption effect deviation of the biomass carbon material prepared at present, and rare apply simultaneously
In water process and soil remediation, most of common biomass carbon is intended only as fertilizer or improves the soil texture, without considering
The reparation of contaminated soil.Rice husk is rice by-product, and resourceful, Yi Zaisheng, microstructure are regular, is rich in cellulose, half fiber
The ingredients such as dimension element and lignin, are a kind of desirable feedstocks for preparing Carbon Materials.Nevertheless, rice husk is still fired mainly as the energy
It burns, there are also make plate or more directly as purposes such as fertilizer.It is directly hot at present in terms of using rice husk production biomass carbon
The adsorption effect for the rice husk biomass carbon that solution obtains is limited.Therefore how to improve the adsorption effect of rice hull carbon and be preferably applied to
Real life is attract attention.
Summary of the invention
Insufficient to solve the prior art, the present invention relates to a kind of modified rice husk biomass carbon and preparation method thereof, the present invention
Using rice husk as raw material, programmed temperature method is pyrolyzed under nitrogen atmosphere, using potassium permanganate as improved chemical, is carried out to rice husk biomass carbon
Modified preparation, and applied in PAHs naphthalene pollution processing, the adsorption effect of biomass carbon is further increased, and can fit simultaneously
Pollution control for water body and soil.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of preparation method of modified rice husk biomass carbon, includes the following steps:
S1. it dries: by the rice husk sieving removal impurity of collection, and being put into baking oven and dry；
S2. high temperature pyrolysis: by the rice husk in step S1 it is cooling after, be put into tube furnace, heat up pyrolysis in nitrogen atmosphere,
Obtain biomass carbon；
S3. potassium permanganate is modified: biomass carbon obtained in step S2 is ground to and sifted out little particle biomass carbon and height
Potassium manganate and deionized water, which are placed in concussion in oscillator, makes the fully oxidized biomass carbon surface of potassium permanganate, is modified after drying
Rice husk biomass carbon, the bulky grain biomass carbon left carry out secondary or multiple grinding again and comply with screening requirement.
Based on the above-mentioned technical proposal, drying, the generation of flue gas when reducing pyrolysis improve charcoal yield, Ke Yijie in advance
Save the time of pyrolysis.By the way that by carrying out heating rate to tube furnace, the setting of final temperature and time realizes sequencing
Heating can precise control of temperature, potassium permanganate oxidation biomass carbon surface make biomass carbon surface generate many holes, be used in combination
Water rinses out the substances such as the free silica for remaining in biomass carbon surface, and such porous structure can be adsorbed preferably
And method is easy to implement, and is ground up, sieved to biomass carbon in order to increase its surface area, so as to increase adsorption rate.
Further, in step S1, drying temperature be 80~100 DEG C, drying time be 12~for 24 hours.
Further, in step S2, in tube furnace, heating rate is 5~10 DEG C/min, and final temperature is 500 DEG C, when pyrolysis
Between be 1~3h.
Further, step S3 further includes that the biomass carbon after oxidation is rinsed removal impurity with deionized water, is dried
Rice husk biomass carbon must be modified after dry.
Further, in step S3, according to mass ratio, the biomass carbon: potassium permanganate: deionized water 1:1:25.
Further, in step S3, the biomass carbon, potassium permanganate and deionized water, which are placed in oscillator, shakes
Even, the concussion time is 24~48h.
Further, in step S3, washing time be 3~5 times, drying temperature be 60~80 DEG C, drying time be 12~
24h。
The present invention also provides a kind of modified rice husk biomass carbons.
The modification rice husk biomass carbon adsorbent that the present invention is prepared by above-mentioned preparation method is used for the water polluted by PAHs
The improvement of body processing and soil.And preferable adsorption effect is achieved, the PAHs is naphthalene (Nap), and naphthalene is Chinese simultaneously
Chinese Ministry of Environmental Protection and door U.S.EPA are classified as priority pollutants.
The beneficial effects of the present invention are:
1. drying, the generation of flue gas when reducing pyrolysis improve charcoal yield, can save the time of pyrolysis in advance.And
And best pyrolysis temperature is reduced to 500 DEG C；
2. the present invention by dry, be pyrolyzed, being modified and etc. prepared light porous, the modified rice husk of high-specific surface area is given birth to
Substance Carbon Materials provide good adsorbent to the large amount of adsorption of naphthalene for the absorption of organic matter.
3. rice husk cost of material is low, sequencing temperature-raising method energy precise control of temperature, potassium permanganate modification procedure is simple, made
The charcoal obtained can be prepared more accurately, and method is easy to implement.
4. modified rice husk biomass carbon provided by the invention can be used for water process and soil improvement simultaneously, have to naphthalene biggish
Adsorbance, lock out operation is convenient in water body, and the charcoal that when rehabilitating soil is added will not have secondary pollution to soil.
Detailed description of the invention
In conjunction with the following drawings, it is specifically described the embodiment of the present invention or technical solution in the prior art, but is described below
In attached drawing for the present invention be only some embodiments of the present invention, rather than limit the scope of the invention.
Fig. 1 is the XRD spectra of sample 1, sample 2 and sample 3；
The SEM figure for the sample (b) that Fig. 2 is sample 2 (a), prepared by embodiment 1；
Fig. 3 is the kinetic curve fittings figure of sample Sorption of Naphthalene prepared by embodiment 1；
Fig. 4 is adsorption isotherm fitted figure of the sample 2 to naphthalene.
Fig. 5 is adsorption isotherm fitted figure of the sample to naphthalene of the preparation of embodiment 1.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and illustrated embodiment is served only for explaining the present invention,
It is not intended to limit the scope of the present invention.
Embodiment 1
By the rice husk sieving removal impurity of collection, it is placed in 80 DEG C of baking oven and dries 12h, it is then that the rice husk of drying is cooling
It is placed in crucible and is put into tube furnace in nitrogen atmosphere to room temperature, be warming up to 500 DEG C with the heating rate of 5 DEG C/min,
And 1h is kept, biomass carbon is obtained, after ground 60 mesh sieve of biomass carbon, by the little particle biomass carbon of 1g screening, 1g
Potassium permanganate and 25g water are added in conical flask, and conical flask is placed in shaking table, and lower shake is shaken at 20 DEG C, under the conditions of 150r/min
It swings for 24 hours, is then rinsed 3 times with deionized water, and be put into baking oven at 60 DEG C, dry 12h, obtain modified rice husk biomass carbon.
Embodiment 2
By the rice husk sieving removal impurity of collection, it is placed in 100 DEG C of baking oven and dries for 24 hours, it is then that the rice husk of drying is cold
But it is placed in crucible and is put into tube furnace in nitrogen atmosphere to room temperature, be warming up to 500 with the heating rate of 10 DEG C/min
DEG C, and keep 3h, obtain biomass carbon, after ground 60 mesh sieve of biomass carbon, by the little particle biomass carbon of 1g screening,
1g potassium permanganate and 25g water are added in conical flask, and conical flask is placed in shaking table, at 20 DEG C, under shaking under the conditions of 150r/min
48h is shaken, is then rinsed 5 times with deionized water, and be put into baking oven at 80 DEG C, drying for 24 hours, obtains modified rice husk biomass
Charcoal.
Embodiment 3
By the rice husk sieving removal impurity of collection, it is placed in 95 DEG C of baking oven and dries 18h, it is then that the rice husk of drying is cooling
It is placed in crucible and is put into tube furnace in nitrogen atmosphere to room temperature, be warming up to 500 DEG C with the heating rate of 7 DEG C/min,
And keep 2.5h, obtain biomass carbon, after ground 60 mesh sieve of biomass carbon, by 1g screening little particle biomass carbon,
1g potassium permanganate and 25g water are added in conical flask, and conical flask is placed in shaking table, at 20 DEG C, under shaking under the conditions of 150r/min
48h is shaken, is then rinsed 4 times with deionized water, and be put into baking oven at 70 DEG C, 17h is dried, obtains modified rice husk biomass
Charcoal.
Comparative example 1
By the rice husk sieving removal impurity of collection, it is placed in 95 DEG C of baking oven and dries 18h, it is then that the rice husk of drying is cooling
It is placed in crucible and is put into tube furnace in nitrogen atmosphere to room temperature, be warming up to 300 DEG C with the heating rate of 7 DEG C/min,
And 2h is kept, obtain sample 1.
Comparative example 2
The sieve of 60 mesh of the rice husk of collection is removed into impurity, is placed in 95 DEG C of baking oven and dries 18h, then will be dried
Dry rice husk is cooled to room temperature and is placed in crucible and is put into tube furnace in nitrogen atmosphere, with the heating rate of 7 DEG C/min
500 DEG C are warming up to, and keeps 2h, obtains sample 2.
Comparative example 3
The sieve of 60 mesh of the rice husk of collection is removed into impurity, is placed in 95 DEG C of baking oven and dries 18h, then will be dried
Dry rice husk is cooled to room temperature and is placed in crucible and is put into tube furnace in nitrogen atmosphere, with the heating rate of 7 DEG C/min
700 DEG C are warming up to, and keeps 2h, obtains sample 3.
The sample that comparative example 1, comparative example 2 and comparative example 3 are obtained carries out XRD test as shown in Figure 1, can from figure
Out, sample 1, sample 2 and sample 3 all do not occur sharp crystal diffraction peak, are only 22 ° or so one disperse peaks of appearance in 2 θ, this
Show that products obtained therefrom is non crystalline structure, be free of other crystalline phases, sample 1,2 and 3 is amorphous noncrystal biomass carbon powder.
And the adsorption experiment to naphthalene is carried out respectively with sample 1, sample 2 and sample 3, the experimental results showed that adsorbance: sample 2
Adsorbance > sample 3 adsorbance > sample 1 adsorbance.
Energy spectrum analysis is carried out to the modification rice husk biomass carbon that embodiment 1 obtains, the results showed that, modification biological charcoal mainly contains
There are C, O and a small amount of Si, Cl, Ca, Mn element.The presence of Mn element shows that manganese oxidation has been gone up in the load of modification biological carbon surface
Object, potassium permanganate are reduced into nascent state MnO2(δ-MnO2), nascent state MnO2(δ-MnO2) suction of the charcoal to naphthalene can be promoted
It receives, because the content of Mn element is very low, secondary pollution can't be generated when improveing soil.
The scanning electron microscope (SEM) photograph for the modification rice husk biomass carbon that Fig. 2 is sample 2 and embodiment 1 obtains, can be with by scanning electron microscope
See, the charcoal profile of modified rice husk biomass carbon is more clear, and can clearly see pore, and fine granularity substance is reduced, this is answered
This is to have washed away ash content during cleaning as a result, the little particle of modified rear surface may be the nascent state MnO in load2
(δ-MnO2), the presence of hole and particulate matter makes modified rice husk biomass carbon have biggish specific surface area, mentions for absorption
For a large amount of active site.
Application Example 1
To the adsorption kinetic data of naphthalene in water body containing naphthalene, take the modification rice husk prepared in 0.05g embodiment 1 raw respectively
Substance charcoal is added in 50ml triangular flask, be then respectively adding concentration be 10mg/L naphthalene solution 25ml, respectively 25 DEG C,
Isothermal vibration 0.5h, 1h under the conditions of 150r/min, 2h, 4h, 8h, 12h, 18, for 24 hours, 36h, 48h take out (2 Duplicate Samples of setting and
One blank sample), it is centrifuged 20min under the conditions of 2000r/min, uses high performance liquid chromatograph after supernatant is crossed 0.45 μm of filter membrane
Its concentration is measured, its dynamic law is obtained.
Adsorbance calculation formula provided by the invention is qe=V (Co-Ce)/m.(1)
Wherein: qeFor the equilibrium adsorption capacity mg/g of adsorbate；V is the volume of naphthalene solution, mL；CoFor the initial dense of naphthalene solution
Spend mg/L；CeFor the equilibrium concentration mg/L. of naphthalene solution
Modified rice husk biomass carbon material is calculated to the adsorbance of naphthalene using formula (1), does modified biomass rice hull carbon pair
The curve of adsorption kinetics of naphthalene, as a result as shown in Figure 3.Modified rice husk biomass carbon shows preferably absorption property to naphthalene,
Adsorption rate is very fast, reaches adsorption equilibrium state in 18h, equilibrium adsorption capacity is 4.82mg/g when reaching balance, is in 8h
Reach the 87.5% of saturated extent of adsorption.The initial stage is adsorbed, the rate of adsorption is larger, and with the progress of reaction, the rate of adsorption is gradually
Reduce, adsorption capacity tends to balance, this is because adsorbent surface has a large amount of adsorption site, with the time at absorption initial stage
Extension, adsorption site gradually occupied, and is adsorbed close to saturation.
Kinetics model of biosorption fitting parameter of the modified rice husk biomass carbon of table 1 to naphthalene
Pseudo-first-order kinetic model q=qe(1-e-k1t)
Pseudo-second order kinetic model q=k2·qe 2·t/(1+k2·qe·t)
Intra-particle diffusion model q=kt0.5+C
Wherein:
qeIt is respectively the adsorbance of adsorbate saturated extent of adsorption on the sorbent and t moment, mg/g with q---；
k1And k2--- it is respectively level-one, the rate constant of second order dynamic model, h-1；k3--- intra-particle diffusion model
Rate constant, mgg-1·h-0.5
The thickness in the boundary layer C---, mg/g
Using pseudo-first-order kinetic model, pseudo-second order kinetic model, intra-particle diffusion model to dynamic absorption data
It is fitted.Fitting result is as shown in table 1.By table as it can be seen that the modified rice husk biomass carbon of pseudo-second order kinetic modeling is to naphthalene
Adsorption process coefficient R2It is higher, and theoretical value (4.83mg/g) shows standard two closer to measured value (4.82mg/g)
Grade kinetic model can better describe modified rice husk biomass carbon to the adsorption process of naphthalene.
Application Example 2
It takes respectively and prepares modified rice husk biomass carbon and sample 2 in 0.05g embodiment 1, be added in 50ml triangular flask, so
It is separately added into the naphthalene solution that 25ml concentration is 5,10,15,20,25mg/L afterwards, isothermal vibration (equilibration time for 24 hours is carried out after sealing
Reach adsorption equilibrium (3 Duplicate Samples of setting and a blank sample) for 18h), to be centrifuged under the conditions of 2000r/min in centrifuge
Supernatant is crossed after 0.45 μm of filter membrane and measures its concentration with high performance liquid chromatograph by 20min.Rice husk biomass carbon pair after before modified
The adsorption isotherm of naphthalene is as shown in Figure 4 and Figure 5.As seen from the figure, in solution naphthalene initial concentration constantly increase, rice husk biomass
Charcoal also constantly increases the adsorbance of naphthalene, but its amplitude increased is smaller and smaller.Modified rice hull carbon adsorbance is apparently higher than
Unmodified, equilibrium concentration is also wanted low in aqueous solution.
Table 2Langmuir, Freundlich and linear model fitting parameter
Langmuir model qe=KL·Q0·Ce/(1+KL·Ce)
Freundlich model qe=KF·Ce 1/n
Linear model qe=Kd·Ce
Wherein: qe--- equilibrium adsorption capacity of the adsorbent to adsorbate, mg/g
Q0--- Langmuir saturated extent of adsorption, mg/g
The concentration of adsorbate solution, mg/L when Ce--- reaches adsorption equilibrium；
KL--- Langmuir absorption constant represents the power of adsorption capacity, L/g；
KFAnd Kd--- adsorption capacity, mg/g
N--- measures the Freundlich absorption constant of adsorption strength, and 1 < n < 10 shows that absorption is advantageous.
With Langmuir, Freundlich and linear model are fitted experimental data, and the results are shown in Table 2.By table
As it can be seen that Freundlich model can more preferable simulation before modified, rear rice husk biomass carbon to the adsorption process of naphthalene, illustrate the suction of naphthalene
Attached process is mono layer adsorption, and interionic is without interaction.In Freundlich model, n=4.131 and n=
4.500, between 1-10, show that absorption is easy to carry out.The equilibrium adsorption capacity q of sample 4e=10.633, the balance of sample 2 is inhaled
Attached amount qe=8.959, the adsorbance of modified rice husk biomass carbon increases 18.7%, in Langmuir model, implements
The K of modification rice husk biomass carbon prepared by example 1L=8.527, greater than the K of sample 2L=4.413, in Freundlich model
In, the K of modification rice husk biomass carbon prepared by embodiment 1F=8.560, greater than the K of sample 2F=6.259, all show to implement
The adsorption capacity of rice husk biomass carbon after modification rice husk biomass carbon sample modification prepared by example 1 is better than unmodified sample
2 rice husk biomass carbon of product.
Application Example 3
Influence experiment of the modified rice husk biomass carbon to adsorption by soil naphthalene.Tested soil comes in Jianghan Plain farmland depth
Layer soil (wherein PAHs concentration can be ignored).Taking two 100ml conical flasks is respectively A, B, the A bottles of tested soil of addition 5g
Earth, B bottles of mixture (the biomass carbonaceous for being added the modification rice husk biomass carbon being prepared in the tested soil of 5g and embodiment 1
Amount ratio 5%), while 3 Duplicate Samples are set, it is then respectively adding each 50ml of naphthalene solution of 10mg/L.Concussion, centrifugation, detection
Step is identical as 2 step of Application Example.
Soil is 0.532mg/g to the adsorbance of naphthalene, and the mixture of soil and modified biomass charcoal is to the adsorbance of naphthalene
1.251mg/g.Adsorbance improves 135.2%.The result shows that a small amount of (5%) modified rice husk biomass carbon is added, can significantly mention
Adsorption capacity of the high soil to naphthalene.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of preparation method of modified rice husk biomass carbon, which comprises the steps of:
S1. it dries: by the rice husk sieving removal impurity of collection, and being put into baking oven and dry；
S2. high temperature pyrolysis: by the rice husk in step S1 it is cooling after, be put into tube furnace, heat up pyrolysis in nitrogen atmosphere, obtains life
Substance charcoal；
S3. potassium permanganate is modified: biomass carbon obtained in step S2 being ground and sifts out little particle biomass carbon and permanganic acid
Potassium and deionized water, which are placed in concussion in oscillator, makes the fully oxidized biomass carbon surface of potassium permanganate, and modified rice husk is obtained after drying
Biomass carbon.
2. being modified the preparation method of rice husk biomass carbon according to claim 1, which is characterized in that in step S1, drying temperature
Degree be 80~100 DEG C, drying time be 12~for 24 hours.
3. being modified the preparation method of rice husk biomass carbon according to claim 1, which is characterized in that in step S2, in tubular type
In furnace, heating rate is 5~10 DEG C/min, and final temperature is 500 DEG C, and pyrolysis time is 1~3h.
4. being modified the preparation method of rice husk biomass carbon according to claim 1, which is characterized in that step S3 further includes by oxygen
Biomass carbon after change is rinsed removal impurity with deionized water, and rice husk biomass carbon must be modified after drying.
5. being modified the preparation method of rice husk biomass carbon according to claim 1, which is characterized in that in step S3, according to matter
Measure ratio, the biomass carbon: potassium permanganate: deionized water 1:1:25.
6. being modified the preparation method of rice husk biomass carbon according to claim 1, which is characterized in that in step S3, the life
Substance charcoal, potassium permanganate and deionized water, which are placed in oscillator, shakes uniformly, and the concussion time is 24~48h.
7. being modified the preparation method of rice husk biomass carbon according to claim 1, which is characterized in that in step S3, rinse secondary
Number be 3~5 times, drying temperature be 60~80 DEG C, drying time be 12~for 24 hours.
8. a kind of modification rice husk that the preparation method of -7 any modified rice husk charcoals according to claim 1 is prepared is raw
Substance charcoal.
9. a kind of application for being modified rice husk biomass carbon according to claim 8 in improvement soil.
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Cited By (6)
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| CN110408416A (en) * | 2019-09-11 | 2019-11-05 | 中国农业科学院农业环境与可持续发展研究所 | A kind of modified biomass charcoal and the preparation method and application thereof |
| CN111389897A (en) * | 2020-03-13 | 2020-07-10 | 广东东华园林绿化工程有限公司 | Soil pollution treatment method for ecological environment restoration |
| CN111569831A (en) * | 2020-04-21 | 2020-08-25 | 哈尔滨工业大学 | Long-term stable biochar-zero-valent iron composite material and one-step preparation method thereof |
| CN114632494A (en) * | 2022-04-08 | 2022-06-17 | 中山大学 | Preparation method of bagasse biochar |
| CN115121223A (en) * | 2022-06-06 | 2022-09-30 | 湖北省生态环境科学研究院(省生态环境工程评估中心) | High-cadmium biochar-based adsorbent and preparation method thereof |
| CN115646435A (en) * | 2022-11-18 | 2023-01-31 | 中国水产科学研究院黄海水产研究所 | Marine heavy metal adsorbent, preparation and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108686622A (en) * | 2018-08-24 | 2018-10-23 | 合肥德博生物能源科技有限公司 | The preparation facilities and preparation method of a kind of modified biomass charcoal for soil remediation |
| CN108940200A (en) * | 2018-07-24 | 2018-12-07 | 启东创潞新材料有限公司 | A kind of preparation method of potassium permanganate modification biological charcoal |
| CN109179410A (en) * | 2018-09-26 | 2019-01-11 | 南京天博环境检测技术有限公司 | A kind of preparation method of biomass-based active carbon |
-
2019
- 2019-03-20 CN CN201910213657.9A patent/CN109967033A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108940200A (en) * | 2018-07-24 | 2018-12-07 | 启东创潞新材料有限公司 | A kind of preparation method of potassium permanganate modification biological charcoal |
| CN108686622A (en) * | 2018-08-24 | 2018-10-23 | 合肥德博生物能源科技有限公司 | The preparation facilities and preparation method of a kind of modified biomass charcoal for soil remediation |
| CN109179410A (en) * | 2018-09-26 | 2019-01-11 | 南京天博环境检测技术有限公司 | A kind of preparation method of biomass-based active carbon |
Non-Patent Citations (1)
| Title |
|---|
| 陈昆柏: "《农业固体废物处理与处置》", 30 November 2016, 河南科学技术出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408416A (en) * | 2019-09-11 | 2019-11-05 | 中国农业科学院农业环境与可持续发展研究所 | A kind of modified biomass charcoal and the preparation method and application thereof |
| CN111389897A (en) * | 2020-03-13 | 2020-07-10 | 广东东华园林绿化工程有限公司 | Soil pollution treatment method for ecological environment restoration |
| CN111569831A (en) * | 2020-04-21 | 2020-08-25 | 哈尔滨工业大学 | Long-term stable biochar-zero-valent iron composite material and one-step preparation method thereof |
| CN114632494A (en) * | 2022-04-08 | 2022-06-17 | 中山大学 | Preparation method of bagasse biochar |
| CN115121223A (en) * | 2022-06-06 | 2022-09-30 | 湖北省生态环境科学研究院(省生态环境工程评估中心) | High-cadmium biochar-based adsorbent and preparation method thereof |
| CN115646435A (en) * | 2022-11-18 | 2023-01-31 | 中国水产科学研究院黄海水产研究所 | Marine heavy metal adsorbent, preparation and use method thereof |
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