CN109046247A - Strengthen the modification biological charcoal and preparation method thereof of absorption organic dyestuff - Google Patents
Strengthen the modification biological charcoal and preparation method thereof of absorption organic dyestuff Download PDFInfo
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- CN109046247A CN109046247A CN201811046722.5A CN201811046722A CN109046247A CN 109046247 A CN109046247 A CN 109046247A CN 201811046722 A CN201811046722 A CN 201811046722A CN 109046247 A CN109046247 A CN 109046247A
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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
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
- B01J20/0229—Compounds of Fe
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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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- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid 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 form
- B01J20/28016—Particle form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3021—Milling, crushing or grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3206—Organic carriers, supports or substrates
- B01J20/3208—Polymeric carriers, supports or substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3234—Inorganic material layers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—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
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- 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
- B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
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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
- 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
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Abstract
The invention belongs to Organic Dyestuff Wastewater Treatments and biomass recycling use field, it is related to strengthening the modified biomass charcoal and preparation method thereof of absorption organic dyestuff, method includes the following steps: (1) stalk removes the peel to obtain straw core, slice, washs, dries, pulverizing and sieving and to obtain powder stalk；(2) powder stalk is impregnated in FeCl3In solution, 1~2h is impregnated, filtration drying must impregnate stalk；(3) dipping stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, keep 1h, closes heating, be cooled to room temperature, take out to obtain iron modification biological charcoal；(4) iron modification biological charcoal is ground, washing to pH is neutrality, dry, the modification biological charcoal for the absorption organic dyestuff that is sieved to strengthen.The preparation method simple process, it is time-consuming short, it can efficiently prepare the charcoal for strengthening organic dyestuff absorption.
Description
Technical field
The invention belongs to Organic Dyestuff Wastewater Treatment and biomass recycling use field, it is related to strengthening absorption organic dyestuff
Modified biomass charcoal and preparation method thereof.
Background technique
China's dyestuff annual output ranks first in the world, with the fast development of the relevant industries such as printing, coating, plastics, fiber, dye
Material demand constantly expands.Comprising largely with the organic dyestuff of chromophoric group, usual dyeing waste water complicated component, matter in dyeing waste water
Amount concentration is high, is difficult to degrade, and is discharged into water environment if dealing with improperly, can reduce water body translucency, reduces oxygen in water, serious to endanger
Evil aquatic ecosystem (Pego M F F, Carvalho J, Borges W, et al.Impact of corona treated
activated carbon in anionic and cationic dye adsorption[J].Cerne,2017,23(2):
219-228.)；And the health of people may be directly or indirectly influenced by food chain.
Charcoal is a kind of carbon containing solid matter of stable height aromatization, can pass through the agriculture and forestry organic waste materials such as animals and plants
Biomass carbonization crack synthesis, there is pore structure abundant, huge specific surface area, chemistry and biology high stability etc.
Advantage has good prospect in sewage treatment.Charcoal has the advantages that cheap and raw material sources are extensive compared with active carbon,
But charcoal is undesirable to the adsorption effect of organic dyestuff, so a kind of side for improving its organic dyestuff adsorption effect need to be studied
Method.And past Improvement method is complex, it need to be through multiple steps such as overactivation-load-carbonizations；Or in limit oxygen carbon
Change process warming temperature is complicated, and patent CN103480331A discloses a kind of biomass magnetic carbon material of degradating organic dye,
It is put into rotary tube furnace, in N2Under protection, 400~500 DEG C are warming up to the heating rate of 2~3 DEG C/min, heat preservation 20~
30min, is continuously heating to 750~800 DEG C, keeps the temperature 60~80min, furnace temperature is down to room temperature after 2h~8h, temperature-rise period is multiple
It is miscellaneous, it takes a long time, production cost is higher.
Summary of the invention
To solve the above problems, the present invention provides a kind of modification biological charcoal preparation method of reinforcing organic dyestuff absorption, it should
Preparation method simple process, it is time-consuming short, it can efficiently prepare the charcoal for strengthening organic dyestuff absorption.
Method includes the following steps:
(1) stalk removes the peel to obtain straw core, washs, dries, pulverizing and sieving and to obtain powder stalk；
(2) powder stalk is impregnated in FeCl3In solution, 1~2h is impregnated, filtration drying must impregnate stalk；
(3) dipping stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, keep 1h, closes
Heating, is cooled to room temperature, takes out to obtain iron modification biological charcoal；
(4) iron modification biological charcoal to be ground, washing to pH is neutrality, it is dry, it is sieved to strengthen changing for absorption organic dyestuff
Property charcoal.
Preferably, in the step (2), the FeCl3The substance withdrawl syndrome of solution is 1~5mol/L.
Preferably, in the step (2), every 100mL FeCl3 solution is for impregnating 2~3g powder stalk.
Preferably, in the step (1), the stalk is corn stover or broomcorn straw.
Preferably, the temperature of the drying is 60~100 DEG C；
Preferably, the detergent of the washing is deionized water；
The modification biological charcoal of the reinforcing absorption organic dyestuff of above-mentioned preparation method preparation also belongs to protection scope of the present invention.
The beneficial effects of the present invention are:
(1) in limit oxygen carbonisation, 600 DEG C directly are warming up to 10 DEG C/min, is not necessarily to multiple ladder-elevating temperature, it is entire to heat up
Carbonisation only needs two hours, so that limit oxygen carbonisation time-consuming is short, consumes energy low, technological operation requires low；
(2) present invention selects infusion process, equal without adding sodium hydroxide or reducing agent compared with being co-precipitated with reduction method
Outer reagent, and without heating, stirring, ultrasonic treatment and etc. can be obtained preferable modified effect, it is easy to operate, be easier to reality
Now it is mass produced；
(3) yield for the modification biological charcoal that the present invention obtains is higher, and the charcoal compared to unused method of modifying is compared,
Yield is improved from 30.64% to 76.3%, and wherein yield refers to the ratio of biomass carbon quality and powder stalk quality after carbonization
Value.
Detailed description of the invention
Fig. 1 be original straw biomass, unmodified biomass charcoal and the present invention prepare modification biological charcoal Fourier it is infrared
Spectrogram；
Fig. 2 is that original straw biomass, unmodified biomass charcoal and the present invention prepare the XRD of modification biological charcoal (X-ray spread out
Penetrate) spectrogram.
Specific embodiment
The present invention is further detailed below in conjunction with drawings and examples.
Reagent employed in the present invention and equipment, if can be bought and be obtained by market without specified otherwise.
Embodiment 1
Strengthen the preparation method of the modification biological of absorption organic dyestuff, comprising the following steps:
(1) stalk removes the peel to obtain straw core, is cut into evenly sized sheet, deionized water washing, and 60 DEG C of drying are then placed in
It is crushed in pulverizer, be sieved to obtain powder stalk；
(2) powder stalk is impregnated in the FeCl of 1mol/L3In solution, 2h, filtering are impregnated, 60 DEG C of dryings obtain dipping straw
Stalk；
(3) dipping stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, is kept for 600 DEG C
1h closes heating, is cooled to room temperature, and closes nitrogen, takes out to obtain iron modification biological charcoal；
(4) iron modification biological charcoal is ground, washing is neutral, 60 DEG C of dryings to filtrate pH for several times, and 100 meshes of sieving obtain by force
Change the modification biological charcoal of absorption organic dyestuff.
Embodiment 2
Strengthen the preparation method of the modification biological of absorption organic dyestuff, comprising the following steps:
(1) stalk removes the peel to obtain straw core, is cut into evenly sized sheet, deionized water washing, and 60 DEG C of drying are then placed in
It is crushed in pulverizer, be sieved to obtain powder stalk；
(2) powder stalk is impregnated in the FeCl of 3mol/L3In solution, 2h, filtering are impregnated, 60 DEG C of dryings obtain dipping straw
Stalk；
(3) dipping stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, is kept for 600 DEG C
1h closes heating, is cooled to room temperature, and closes nitrogen, takes out to obtain iron modification biological charcoal；
(4) iron modification biological charcoal is ground, washing is neutral, 60 DEG C of dryings to filtrate pH for several times, and 100 meshes of sieving obtain by force
Change the modification biological charcoal of absorption organic dyestuff.
Embodiment 3
Strengthen the preparation method of the modification biological of absorption organic dyestuff, comprising the following steps:
(1) stalk removes the peel to obtain straw core, is cut into evenly sized sheet, deionized water washing, and 60 DEG C of drying are then placed in
It is crushed in pulverizer, be sieved to obtain powder stalk；
(2) powder stalk is impregnated in the FeCl of 3mol/L3In solution, 2h is impregnated, filtering, 60 DEG C are dried overnight, then
80 DEG C of baking 2h, obtain dipping stalk；
(3) dipping stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, is kept for 600 DEG C
1h closes heating, is cooled to room temperature, and closes nitrogen, takes out to obtain iron modification biological charcoal；
(4) iron modification biological charcoal is ground, washing is neutral, 60 DEG C of dryings to filtrate pH for several times, and 100 meshes of sieving obtain by force
Change the modification biological charcoal of absorption organic dyestuff.
Embodiment 4
Strengthen the preparation method of the modification biological of absorption organic dyestuff, comprising the following steps:
(1) stalk removes the peel to obtain straw core, is cut into evenly sized sheet, deionized water washing, and 60 DEG C of drying are then placed in
It is crushed in pulverizer, be sieved to obtain powder stalk；
(2) powder stalk is impregnated in the FeCl of 5mol/L3In solution, 2h, filtering are impregnated, 60 DEG C of dryings obtain dipping straw
Stalk；
(3) dipping stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, is kept for 600 DEG C
1h closes heating, is cooled to room temperature, and closes nitrogen, takes out to obtain iron modification biological charcoal；
(4) iron modification biological charcoal is ground, washing is neutral, 60 DEG C of dryings to filtrate pH for several times, and 100 meshes of sieving obtain by force
Change the modification biological charcoal of absorption organic dyestuff.
Comparative example 1
(1) stalk removes the peel to obtain straw core, is cut into evenly sized sheet, deionized water washing, and 60 DEG C of drying are then placed in
It is crushed in pulverizer, be sieved to obtain powder stalk；
(2) dry powder stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, keeps
600 DEG C of 1h close heating, are cooled to room temperature, and close nitrogen, take out to obtain iron modification biological charcoal；
(3) charcoal is ground, washing is neutral, 60 DEG C of dryings to filtrate pH for several times, and 100 meshes of sieving obtain charcoal.
For the absorption principle for investigating modified biomass charcoal prepared by the present invention, inventor is not to original straw biomass, change
Property biomass carbon and the present invention prepare modification biological charcoal and carried out BET characterization, FTIR spectrum analysis and XRD diffraction point
Analysis.The BET data of three is all reduced referring to table 1, the specific surface area and pore volume of iron modification biological charcoal, this may be success
Supported ferriferous oxide and caused by；It also indicates that simultaneously, specific surface area and pore volume are not to influence charcoal to Dye Adsorption effect
Deciding factor；The Fourier transform infrared spectroscopy figure of three referring to Fig. 1, original straw biomass after high temperature cabonization, by
In the decomposition of the organic molecules such as cellulose, the functional groups such as C=O, C-O-C disappear, and pass through the modified biology of the method for the present invention
Charcoal is compared with primitive organism charcoal, the characteristic peak (564cm with Fe-O-1), this shows that ferriferous oxide is successfully supported on life
Object carbon surface；The XRD spectrum of three referring to fig. 2, further confirms the presence of magnetic iron oxide, 30.076 °,
35.426 °, 43.053 °, 56.935 ° and 62.520 ° obtained characteristic peaks are respectively Fe3O4Different crystal faces, and unmodified biology
Above-mentioned peak value is not present in charcoal and straw biomass, shows that this method successfully synthesizes Fe3O4/ biology carbon composite, this result
It is consistent with FTIR spectrum result.
1 charcoal structural parameters of table
To investigate the effect that modification biological charcoal of the invention adsorbs organic dyestuff, adsorption test is carried out, concrete operations are such as
Under: in the organic dye solution for taking 0.015g adsorbent investment 25mL, pH=6 is adjusted with sodium hydroxide or hydrochloric acid, is placed into past
Complex oscillator keeps 180rpm revolving speed, room temperature (25 ± 0.5 DEG C).After reacting and reaching balance, after solution is filtered with it is ultraviolet can
Light-exposed analytical photometry analyzes remaining organic dyestuff concentration.The present invention has investigated adsorbent respectively, and to methylene blue, (cation contaminates
Material) and acid orange 7 (anionic dye) adsorption effect, the adsorbate initial concentration is respectively 100mg/L and 40mg/L, respectively
Embodiment experimental result is as shown in table 2.
The adsorption effect of the bio-modification charcoal of 2 various embodiments of the present invention of table preparation
| Embodiment | 1 | 2 | 3 | 4 | Comparative example 1 |
| Methylene blue adsorption number capacity (mg/g) | 23.91 | 133.32 | 126.12 | 43.32 | 49.85 |
| Methylene blue removal rate (%) | 14.35 | 80.06 | 75.67 | 26.00 | 29.73 |
| Acid orange 7 adsorption capacity (mg/g) | 12.00 | 37.10 | 33.13 | 23.75 | 8.22 |
| Acid orange 7 removal rate (mg/g) | 18.01 | 55.66 | 49.70 | 35.63 | 12.33 |
Inventor has also measured without the modified protozoa charcoal (comparative example 1) obtained in same Carbonization Conditions to methylene
Blue and acid orange 7 equilibrium adsorption capacities are respectively 49.85mg/g and 8.22mg/g, and under the conditions of identical carbonization, embodiment 2
The equilibrium adsorption capacities maximum for preparing modification biological charcoal can reach 133.32mg/g and 37.10mg/g, it can thus be appreciated that the present invention changes
Property method is remarkably improved straw biological charcoal to the adsorption effect of organic dyestuff.
And as seen from the results in Table 1, FeCl3Solution concentration is too high or too low be to modification it is unfavorable, the present invention emphasizes this
The FeCl that method uses3Solution optium concentration is 3mol/L.And example 2 and example 3 distinguish the aqueous journey for being only that powder stalk
Degree, from its experimental data it is found that stalk raw material are not necessarily to be completely dried before carbonization, maintains certain moisture to its carbonisation
It does not make significant difference.
Claims (8)
1. strengthening the modification biological charcoal preparation method of organic dyestuff absorption, comprising the following steps:
(1) stalk removes the peel to obtain straw core, washs, dries, pulverizing and sieving and to obtain powder stalk；
(2) powder stalk is impregnated in FeCl3In solution, 1~2h is impregnated, filtration drying must impregnate stalk；
(3) dipping stalk is placed under nitrogen atmosphere, rises to 600 DEG C with the heating rate of 10 DEG C/min, keep 1h, closes and add
Heat is cooled to room temperature, and takes out to obtain iron modification biological charcoal；
(4) iron modification biological charcoal is ground, washing to pH is neutrality, dry, the modified life for the absorption organic dyestuff that is sieved to strengthen
Object charcoal.
2. preparation method as described in claim 1, which is characterized in that in the step (2), the FeCl3The substance of solution
Amount concentration is 1~5mol/L.
3. preparation method as claimed in claim 2, which is characterized in that in the step (2), the FeCl3The substance of solution
Amount concentration is 3mol/L
4. preparation method as claimed in claim 2, which is characterized in that in the step (2), every 100mL FeCl3Solution is used for
Impregnate 2~3g powder stalk.
5. preparation method as described in claim 1, which is characterized in that in the step (1), the stalk be corn stover or
Broomcorn straw.
6. preparation method as described in claim 1, which is characterized in that the temperature of the drying is 60~100 DEG C；
7. preparation method as described in claim 1, which is characterized in that the detergent of the washing is deionized water；
8. the modification biological charcoal of the reinforcing absorption organic dyestuff of the described in any item preparation method preparations of claim 1~7.
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Cited By (14)
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| CN110064368A (en) * | 2019-05-22 | 2019-07-30 | 青岛科技大学 | The preparation method of silicomanganese modification biological carbon composite |
| CN110102256A (en) * | 2019-04-22 | 2019-08-09 | 中国科学院东北地理与农业生态研究所 | A kind of preparation method and applications of Fe modification biological carbon composite |
| CN110508265A (en) * | 2019-08-20 | 2019-11-29 | 武汉纺织大学 | A kind of magnetism luffa charcoal and its preparation method and application |
| CN110538639A (en) * | 2019-09-24 | 2019-12-06 | 信阳学院 | Preparation and application of high-purity magnetic peanut shell biomass adsorbing material |
| CN110773126A (en) * | 2019-11-12 | 2020-02-11 | 中南大学 | Biochar pellets and preparation method and application thereof |
| CN110975835A (en) * | 2019-12-19 | 2020-04-10 | 东北农业大学 | Preparation method of biochar-ferroferric oxide-chitosan composite material |
| CN111468070A (en) * | 2020-03-24 | 2020-07-31 | 杭州市富阳区浙工大银湖创新创业研究院 | Simple, convenient and efficient preparation method of magnetically separable biomass dye adsorbent |
| CN112080280A (en) * | 2019-06-13 | 2020-12-15 | 天津大学 | Application of modified charcoal material in degrading dichloro-diphenyl-trichloroethane |
| CN112263989A (en) * | 2020-09-15 | 2021-01-26 | 南京林业大学 | Method for preparing magnetic biochar by one-step method |
| CN112845494A (en) * | 2020-12-04 | 2021-05-28 | 南京斯博伏特新材料有限公司 | Method for preparing sewage treatment material by utilizing agricultural waste |
| CN113663645A (en) * | 2021-09-26 | 2021-11-19 | 重庆大学 | Preparation method of bamboo reed biochar and sewage treatment method |
| CN113731358A (en) * | 2021-08-18 | 2021-12-03 | 暨南大学 | Tobacco straw core biochar material and preparation method and application thereof |
| CN114425303A (en) * | 2022-03-01 | 2022-05-03 | 广东石油化工学院 | Preparation method and application of alkali-soluble fly ash modified straw stalk biochar |
| CN115010524A (en) * | 2022-05-25 | 2022-09-06 | 上海勘测设计研究院有限公司 | Modified biochar for reducing greenhouse gas emission in sludge composting process and preparation method and application method thereof |
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