CN113731362B - Gamma-polyglutamic acid waste strain biomass-derived carbon material and preparation method and application thereof - Google Patents
Gamma-polyglutamic acid waste strain biomass-derived carbon material and preparation method and application thereof Download PDFInfo
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- CN113731362B CN113731362B CN202111056898.0A CN202111056898A CN113731362B CN 113731362 B CN113731362 B CN 113731362B CN 202111056898 A CN202111056898 A CN 202111056898A CN 113731362 B CN113731362 B CN 113731362B
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- 239000002028 Biomass Substances 0.000 title claims abstract description 33
- 239000002699 waste material Substances 0.000 title claims abstract description 31
- 239000003575 carbonaceous material Substances 0.000 title claims abstract description 27
- 229920002643 polyglutamic acid Polymers 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 12
- 238000009655 industrial fermentation Methods 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000006228 supernatant Substances 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims description 7
- 229940107698 malachite green Drugs 0.000 claims description 7
- FDZZZRQASAIRJF-UHFFFAOYSA-M malachite green Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](C)C)C=C1 FDZZZRQASAIRJF-UHFFFAOYSA-M 0.000 claims description 7
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 claims description 7
- 229940012189 methyl orange Drugs 0.000 claims description 7
- 229960000907 methylthioninium chloride Drugs 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 7
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 claims description 5
- 229940043267 rhodamine b Drugs 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 241000311115 Bacillus paralicheniformis ATCC 9945a Species 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 claims description 3
- 230000004151 fermentation Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- DKBXPLYSDKSFEQ-UHFFFAOYSA-L turquoise gll Chemical compound [Na+].[Na+].[Cu+2].N1=C(N=C2[N-]3)[C]4C(S(=O)(=O)[O-])=CC=CC4=C1N=C([N-]1)C4=CC=CC(S([O-])(=O)=O)=C4C1=NC(C=1C4=CC=CC=1)=NC4=NC3=C1[C]2C=CC=C1 DKBXPLYSDKSFEQ-UHFFFAOYSA-L 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims 2
- 239000013049 sediment Substances 0.000 claims 2
- -1 direct blue 86 Chemical compound 0.000 claims 1
- KUIXZSYWBHSYCN-UHFFFAOYSA-L remazol brilliant blue r Chemical compound [Na+].[Na+].C1=C(S([O-])(=O)=O)C(N)=C2C(=O)C3=CC=CC=C3C(=O)C2=C1NC1=CC=CC(S(=O)(=O)CCOS([O-])(=O)=O)=C1 KUIXZSYWBHSYCN-UHFFFAOYSA-L 0.000 claims 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 11
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 11
- 239000002244 precipitate Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000001580 bacterial effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000009777 vacuum freeze-drying Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 229920000155 polyglutamine Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a carbon material derived from biomass of gamma-polyglutamic acid waste strains, and a preparation method and application thereof, and belongs to the field of material preparation. The invention collects waste bacterial biomass produced by industrial fermentation to produce gamma-polyglutamic acid, mixes the waste bacterial biomass with nitric acid or sulfuric acid solution, adds the mixed biomass into a hydrothermal reaction kettle, and reacts for a period of time in a multipurpose microwave chemical synthesizer; and after the reaction is finished, taking out the hydrothermal reaction kettle after the multipurpose microwave synthesizer is cooled, repeatedly washing the product with deionized water until the supernatant is basically colorless, centrifuging to keep a layer of precipitate, and drying the obtained precipitate to obtain the carbon material synthesized by using the gamma-polyglutamic acid waste strain biomass hydrothermal method. The invention realizes the recycling of biomass resources of waste strains for industrial production of gamma-polyglutamic acid; the steps are simple in operation steps and low in cost; the prepared carbon material has good adsorptivity to dye, is favorable for adsorbing the dye in polluted water, and has wide application prospect and great development potential.
Description
Technical Field
The invention relates to the field of material preparation, in particular to a carbon material derived from biomass of gamma-polyglutamic acid waste strains, and a preparation method and application thereof.
Background
The waste biomass is used as renewable resources, and the recycling of the waste biomass can reduce carbon emission and protect the environment. Biomass can be directly combusted to produce energy, and can also be converted into energy and other chemicals by various conversion techniques such as pyrolysis, liquefaction, and the like. Among these conversion techniques, hydrothermal carbonization (HTC) is a very promising conversion technique. Its advantage is that it can convert wet biomass into energy and chemicals without going through a high energy drying process. The solid product hydrothermal char produced thereby has been of great interest for its ability to prepare activated carbon precursors in wastewater pollution remediation, soil remediation applications, solid fuels and other carbonaceous materials.
At present, carbon-rich substances such as plant wastes including straws, rice straws, branches, grasses, algae and the like, organic wastes including excrement, residual sludge and the like, and bagasse and beet pulp industrial wastes are taken as matrixes for research, and biomass charcoal is obtained after low-temperature pyrolysis in a low-oxygen environment.
The lichenifelmis ATCC 9945A strain is a microorganism used for industrial production of gamma-polyglutamic acid. The gamma-polyglutamine products produced by industrial fermentation are widely used in the fields of cosmetics, foods, medicines and the like, but the subsequent treatment and application of waste biomass separated after the fermentation production of gamma-polyglutamic acid by B.licheniformis ATCC 9945A strain are reported.
Disclosure of Invention
In order to properly treat waste strain biomass generated by industrial fermentation of gamma-polyglutamic acid, reduce carbon emission, protect environment, and recycle waste biomass resources at the same time to obtain a carbon material with adsorption capacity to dye, the invention provides a method for preparing the carbon material based on waste strain biomass hydrothermal synthesis method, and the material is applied to adsorption removal of dye.
The first object of the invention is to provide a method for preparing a carbon material based on a waste strain biomass hydrothermal synthesis method, which comprises the following steps: collecting waste strain biomass for industrial fermentation production of gamma-polyglutamic acid, mixing with deionized water, nitric acid solution or sulfuric acid solution, adding into a hydrothermal reaction kettle, and reacting in a multipurpose microwave chemical synthesizer for a period of time; and after the reaction is finished, taking out the hydrothermal reaction kettle after the multipurpose microwave synthesizer is cooled, repeatedly washing the product with deionized water until the supernatant is basically colorless, centrifuging to keep a layer of precipitate, and drying the obtained precipitate to obtain the carbon material synthesized by using the gamma-polyglutamic acid waste strain biomass hydrothermal method.
In another preferred example, the waste strain biomass for producing gamma-polyglutamic acid by industrial fermentation is waste strain biomass obtained by liquid fermentation of bacillus licheniformis ATCC 9945A to produce gamma-polyglutamic acid and solid-liquid separation.
In another preferred example, the mass-volume ratio of the waste bacterial to the deionized water, nitric acid solution or sulfuric acid solution is 15g:30ml;
preferably, the nitric acid solution is 0-5% (volume fraction) nitric acid solution;
preferably, the sulfuric acid solution is a sulfuric acid solution of 0 to 50% (volume fraction).
In another preferred example, the pressure used by the multipurpose microwave chemical synthesizer is normal pressure, the set heating rate is 10 ℃/min, the temperature is raised to 200 ℃, and the reaction time is 0.5-12 h.
In another preferred embodiment, the cooling is to 60 ℃.
In another preferred example, the centrifugal speed is 8000-12000 rpm, and the centrifugal time is 10-20 min.
In another preferred embodiment, the drying is vacuum freeze drying.
In another preferred embodiment, the sulfuric acid solution is a 50% (volume fraction) sulfuric acid solution and the reaction is performed for 4 hours.
The second purpose of the invention is to provide a carbon material prepared by utilizing the biomass hydrothermal synthesis method of the gamma-polyglutamic acid waste strains.
A third object of the present invention is to provide the use of the carbon material of the present invention for adsorption removal of dyes;
preferably, the dyes used are Malachite Green (MG), methyl Orange (MO), methylene Blue (MB), rhodamine B (RhB), active blue 19 (RB 19), direct blue 86 (DB 86), solvent blue 38 (SB 38).
In a preferred embodiment, the application comprises the steps of: the carbon material and the sample are put into a constant temperature air vibration incubator for vibration adsorption;
preferably, in the oscillating process, the temperature of the shaking table is set to be 20-30 ℃, the oscillating rotation speed is 150-300 rpm, and the oscillating time is 12-48 h.
Compared with the prior art, the invention has the following beneficial effects: in the preparation method of the carbon material, the raw material is waste biomass of industrial gamma-polyglutamic acid production strains, the source is wide, and the recycling of waste biomass resources is realized. The hydrothermal synthesis method can convert wet biomass into carbon materials without high-energy drying process, and has simple operation steps and low cost. The prepared carbon material has good adsorptivity to dye, is favorable for adsorbing the dye in polluted water, and has wide application prospect and great development potential.
Drawings
FIG. 1 is a graph showing the change in absorbance at the highest peak before and after adsorption of various dyes by the carbon materials obtained in examples 1 to 9.
Detailed Description
The following examples are further illustrative of the invention and are not intended to be limiting thereof.
Example 1
And collecting waste strains generated after industrial fermentation of gamma-polyglutamic acid, and weighing 15g in a reaction kettle. 30mL of deionized water is added for simple and even mixing, and the mixture is put into a stirrer. A temperature-raising program is set for the multipurpose microwave chemical synthesizer, and the temperature is raised to 200 ℃ at a speed of 10 ℃/min. And then placing the reaction kettle into a multipurpose microwave chemical synthesizer to react for 0.5h at 200 ℃, closing the instrument after the instrument is cooled to about 60 ℃, taking out the reaction kettle, transferring the product into a 50mL centrifuge tube, repeatedly washing the product with deionized water until the supernatant is basically colorless, centrifuging (10000 rpm,15 min), keeping the layer precipitate, and performing vacuum freeze drying. Then accurately weighing the obtained product, grinding the product into powder by using a mortar, and putting the powder into a dryer for standby. The dyes selected were Malachite Green (MG), methyl Orange (MO), methylene Blue (MB), rhodamine B (RhB), active blue 19 (RB 19), direct blue 86 (DB 86), and solvent blue 38 (SB 38), respectively. Because of the different properties of the various dyes, the concentrations used were slightly different, respectively: MG 50MG/L, MO 50MG/L, MB 50MG/L, rhB 50MG/L, RB19 100MG/L, DB86 100MG/L, SB38 200MG/L. 10mL of the dye solution prepared above was taken into a 15mL centrifuge tube, an equal amount of the obtained carbon material (5 mg) was added, and a single dye solution without carbon material was used as a control group, and the sample was dispersed by auxiliary ultrasound, and then all the sample solutions were put together into a constant temperature air shaker for adsorption reaction, wherein the shaking speed was 200rpm. After 24h, all samples were centrifuged simultaneously (10000 rpm,15 min), 2mL of supernatant was taken respectively, and the absorbance of the samples was measured using an ultraviolet-visible absorption spectrometer, the peak absorption peak of each dye was as follows: MG (618 nm), MO (464 nm), MB (665 nm), rhB (554 nm), RB19 (665 nm), DB86 (623 nm), SB38 (616 nm).
Example 2
Experimental procedure reference is made to example 1, wherein the reaction vessel is placed in a multipurpose microwave chemical synthesizer at 200 ℃ for 1h, the remainder of the procedure being the same as in example 1.
Example 3
Experimental procedure reference is made to example 1, wherein the reaction vessel is placed in a multipurpose microwave chemical synthesizer at 200 ℃ for 2h, the remainder of the procedure being the same as in example 1.
Example 4
Experimental procedure reference is made to example 1, wherein the reaction vessel is placed in a multipurpose microwave chemical synthesizer at 200 ℃ for 3h, the remainder of the procedure being the same as in example 1.
Example 5
Experimental procedure reference is made to example 1, wherein the reaction vessel is placed in a multipurpose microwave chemical synthesizer at 200 ℃ for 4 hours, the remainder of the procedure being the same as in example 1.
Example 6
Experimental methods referring to example 1, wherein 30mL of 1% nitric acid solution was added and mixed well, and placed into a stirrer; the reaction vessel was placed in a multipurpose microwave chemical synthesizer at 200℃for 3 hours, and the rest of the procedure was the same as in example 1.
Example 7
Experimental methods referring to example 1, wherein 30mL of 1% nitric acid solution was added and mixed well, and placed into a stirrer; the reaction vessel was placed in a multipurpose microwave chemical synthesizer at 200℃for 4 hours, and the rest of the procedure was the same as in example 1.
Example 8
Experimental methods referring to example 1, wherein 30mL of 5% nitric acid solution was added and mixed well, and placed into a stirrer; the reaction vessel was placed in a multipurpose microwave chemical synthesizer at 200℃for 4 hours, and the rest of the procedure was the same as in example 1.
Example 9
Experimental methods referring to example 1, wherein 30mL of 50% sulfuric acid solution was added and mixed well, and placed into a stirrer; the reaction vessel was placed in a multipurpose microwave chemical synthesizer at 200℃for 4 hours, and the rest of the procedure was the same as in example 1.
Examples 1 to 9 experiments were carried out by setting 9 groups (experimental groups) according to the reaction time and the kind of the solution and the concentration thereof, as shown in table 1:
TABLE 1
| Examples | Kind of solution | Solution concentration (volume fraction) | Reaction time at 200 ℃ (h) |
| 1 | Deionized water | - | 0.5 |
| 2 | Deionized water | - | 1 |
| 3 | Deionized water | - | 2 |
| 4 | Deionized water | - | 3 |
| 5 | Deionized water | - | 4 |
| 6 | Nitric acid | 1％ | 3 |
| 7 | Nitric acid | 1％ | 4 |
| 8 | Nitric acid | 5％ | 4 |
| 9 | Sulfuric acid | 50％ | 4 |
As a result, as shown in fig. 1, the carbon materials obtained in examples 1 to 9 (experimental group) all had the ability to adsorb and remove dye; particularly, when sulfuric acid with the concentration of 50% is added to react with waste strains, the obtained carbon material has obviously stronger removal capability on dye. Therefore, the carbon material can be applied to industry, and the recycling of waste biomass resources is realized.
Claims (4)
1. The method for preparing the carbon material by utilizing the gamma-polyglutamic acid waste strain biomass is characterized by comprising the following steps of: collecting waste strain biomass for industrial fermentation production of gamma-polyglutamic acid, mixing with sulfuric acid solution, adding into a hydrothermal reaction kettle, and reacting for a period of time in a multipurpose microwave chemical synthesizer; after the reaction is finished, taking out the hydrothermal reaction kettle after the multipurpose microwave chemical synthesizer is cooled, repeatedly washing the product with deionized water until the supernatant is colorless, centrifuging to keep a layer of sediment, drying the obtained sediment to obtain the carbon material,
the waste strain biomass for producing the gamma-polyglutamic acid by industrial fermentation is waste strain biomass obtained by liquid fermentation of bacillus licheniformis ATCC 9945A to produce the gamma-polyglutamic acid and solid-liquid separation;
the mass volume ratio of the waste strain biomass to the sulfuric acid solution is 15g:30mL, wherein the sulfuric acid solution is a sulfuric acid solution with a volume fraction of 50%;
the reaction is carried out in a multipurpose microwave chemical synthesizer under normal pressure, the set heating rate is 10 ℃/min, the temperature is raised to 200 ℃, and the reaction time is 4 hours.
2. The method of claim 1, wherein the centrifugation speed is 8000 to 12000rpm and the centrifugation time is 10 to 20 minutes.
3. A carbon material prepared by the method of any one of claims 1-2.
4. The use of the carbon material of claim 3 for adsorption removal of dye selected from one or more of malachite green, methyl orange, methylene blue, rhodamine B, reactive blue 19, direct blue 86, solvent blue 38.
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| CN113731362B true CN113731362B (en) | 2024-02-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001009275A1 (en) * | 1999-07-31 | 2001-02-08 | Henkel Ecolab Gmbh & Co. Ohg | Removal of pigment-containing residues in the pharmaceutical or cosmetics industry |
| CN101864073A (en) * | 2010-05-25 | 2010-10-20 | 上海应用技术学院 | Method for extracting Gamma-polyglutamic acid from fermentation broth |
| CN104984733A (en) * | 2015-07-30 | 2015-10-21 | 浙江农林大学 | Production method for waste bacteria stick hydrothermal biomass carbon adsorption material |
| CN108751162A (en) * | 2018-07-05 | 2018-11-06 | 北京中富瑞科环保科技有限公司 | A kind of carbonizing treatment method of antibiotic bacterium dregs |
| CN108987122A (en) * | 2018-09-04 | 2018-12-11 | 中南大学 | A kind of preparation method and applications of the porous nitrogen-doped carbon material based on fungal organism matter |
-
2021
- 2021-09-09 CN CN202111056898.0A patent/CN113731362B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001009275A1 (en) * | 1999-07-31 | 2001-02-08 | Henkel Ecolab Gmbh & Co. Ohg | Removal of pigment-containing residues in the pharmaceutical or cosmetics industry |
| CN101864073A (en) * | 2010-05-25 | 2010-10-20 | 上海应用技术学院 | Method for extracting Gamma-polyglutamic acid from fermentation broth |
| CN104984733A (en) * | 2015-07-30 | 2015-10-21 | 浙江农林大学 | Production method for waste bacteria stick hydrothermal biomass carbon adsorption material |
| CN108751162A (en) * | 2018-07-05 | 2018-11-06 | 北京中富瑞科环保科技有限公司 | A kind of carbonizing treatment method of antibiotic bacterium dregs |
| CN108987122A (en) * | 2018-09-04 | 2018-12-11 | 中南大学 | A kind of preparation method and applications of the porous nitrogen-doped carbon material based on fungal organism matter |
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