CN109160505B - Method for preparing porous carbon material by using bacterium activated waste black liquor and application of porous carbon material - Google Patents

Method for preparing porous carbon material by using bacterium activated waste black liquor and application of porous carbon material Download PDF

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CN109160505B
CN109160505B CN201811041475.XA CN201811041475A CN109160505B CN 109160505 B CN109160505 B CN 109160505B CN 201811041475 A CN201811041475 A CN 201811041475A CN 109160505 B CN109160505 B CN 109160505B
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black liquor
porous carbon
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石岩
张可菁
司梦莹
刘明人
颜旭
柴立元
杨志辉
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Central South University
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Abstract

The invention provides a method for preparing a porous carbon material by using waste black liquor activated by bacteria and application of the porous carbon material, and belongs to the technical field of carbon material preparation. The specific surface area of the obtained bacteria optimized porous carbon is high and is 1397-2240 m2Between/g. When the obtained porous carbon is used as an electrode material of a super capacitor and the current density is 0.5A/g, the specific volume of the porous carbon reaches 330F/g; when the current density is increased to 20A/g, the specific volume is kept to be 265F/g, and high charge capacity and excellent rate performance are shown.

Description

Method for preparing porous carbon material by using bacterium activated waste black liquor and application of porous carbon material
Technical Field
The invention belongs to the technical field of carbon material preparation, and particularly relates to a method for preparing a porous carbon material by using waste black liquor activated by bacteria and application of the porous carbon material.
Background
A supercapacitor is a device that realizes energy storage by electrostatic double layer capacitance or faraday pseudocapacitance, and has high power density and rapid charge and discharge rate and longer life span compared to conventional energy storage devices. In consideration of various electrode materials for a supercapacitor, studies including activated carbon, carbon nanotubes, carbon aerogel, graphene, and the like have been commonly conducted, and such carbon materials have controlled porosity, good stability, electrical conductivity, and environmental compatibility. However, carbon nanotubes, carbon aerogels, and graphene are difficult to implement on a large scale due to high cost and harsh preparation conditions. Activated carbon is widely used for preparing electrode materials due to its large surface area and relatively low cost. Usually, activated carbon is based onPrecursors of fossil fuels (e.g. coal and petroleum) by physical (steam, CO)2And air), chemical (H)3PO4，ZnCl2KOH) or physicochemical activation methods, but these conventional activation steps also add cost to the production and pose environmental problems. Therefore, the method for preparing the simple, green and environment-friendly porous carbon material has great scientific significance and social benefit.
Alkaline pretreatment is commonly applied in the biorefinery and pulp and paper industry to remove lignin from lignocellulosic biomass, thus producing large quantities of black liquor with lignin as the main component. The alkali treatment black liquor as industrial waste contains a large amount of environmental pollutants, has complex components and is difficult to treat. How to realize effective recycling of black liquor is also a problem to be solved.
Disclosure of Invention
In order to solve the above problems, a first object of the present invention is to provide a method for preparing a porous carbon material by using waste black liquor generated by alkaline pretreatment of biomass as a raw material, and performing biological activation by using bacteria, and further performing high-temperature carbonization to prepare a porous carbon material with a high specific surface area. The preparation method is simple and environment-friendly.
The second purpose of the invention is to provide the porous carbon material prepared by the method. The porous carbon material has large specific surface area and excellent electrochemical performance.
The third purpose of the invention is to provide the application of the porous carbon material, wherein the porous carbon material is applied to a super capacitor and shows high specific capacitance characteristic and excellent rate capability.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a method for preparing a porous carbon material by using bacteria to activate waste black liquor, which comprises the steps of inoculating lignin degrading bacteria into a sterile culture medium containing the waste black liquor, culturing, separating the obtained solid by acid precipitation, cleaning and drying to obtain a bacteria activated product, putting the bacteria activated product into an inert atmosphere for carbonization treatment, and purifying the obtained carbonized product to obtain the porous carbon material.
According to the technical scheme, alkaline pretreated waste black liquor is used as a carbon source, the main component of the waste black liquor is lignin, lignin degrading bacteria are introduced to degrade the waste black liquor, biological activation of the waste black liquor is achieved, and carbonization treatment is carried out on the waste black liquor subjected to biological activation treatment, so that the porous carbon material with graded pores, large specific surface area and excellent electrochemical performance can be obtained. During the activation process of bacteria, the bacteria secrete lignin to depolymerize extracellular enzymes, under the action of the enzymes, macromolecular lignin is oxidized to generate micromolecular benzene compounds and aromatic free radicals, the molecular weight of the lignin is reduced, the lignin is demethoxylated to form more phenolic hydroxyl groups, nitrogen and oxygen are doped into a carbon skeleton of the lignin by the bacteria, the hydrophilicity of the carbon material can be positively increased, pseudo-capacitance is introduced in the electrochemical process, and the electrochemical performance of the porous carbon material is improved.
Preferably, the lignin degrading bacteria are Currividus basilensis B-8 with the preservation number of CGMCC No. 4240.
In the present invention, the waste black liquor may be waste black liquor generated from an alkaline pretreatment process in a biorefining or papermaking process in the prior art. In the biorefining or papermaking process, the alkali pretreatment is only used for removing lignin from the lignocellulose biomass, and the alkali adopted by the alkali pretreatment is low in concentration, so that the alkali pretreatment cannot activate a lignin carbon source.
Preferably, the pH value of the waste black liquor is firstly adjusted to 6-10.
Preferably, the waste black liquor is obtained by adding the waste biomass into a sodium hydroxide solution, reacting at the temperature of 100-120 ℃ for 30-120min, filtering and separating, and adjusting the pH value of the obtained supernatant to 6-10 to obtain the waste black liquor.
The solid-liquid mass volume ratio of the waste biomass to the sodium hydroxide solution is 1g:5-20 ml.
In the sodium hydroxide solution, the mass fraction of sodium hydroxide is 0.5-5%.
The waste biomass is at least one selected from corn stalks, rice stalks, bagasse and switchgrass.
The particle size of the waste biomass is less than or equal to 60 meshes.
The waste biomass is firstly crushed to the particle size, then is cleaned by ultrapure water and is dried at 50-70 ℃ to constant weight.
Preferably, the culture condition of the lignin-degrading bacteria is that the inoculation amount is 5-20% (the ratio of the volume of the inoculated seed solution to the volume of the culture solution after inoculation), the temperature is 25-40 ℃, the pH value is 6-10, and the culture time is 1-5 days.
Further preferably, the culture conditions of said lignin-degrading bacteria are that the inoculum size is 10-20% (the ratio of the volume of the inoculated seed solution to the volume of the culture solution after inoculation), the temperature is 25-40 ℃, the pH is 7-9, and the culture time is 2-5 days.
In a preferred scheme, the sterile culture medium containing the waste black liquor is as follows: 5-15g/L (NH) of waste black liquor4)2SO42g/L，K2HPO4 1g/L，KH2PO4 1g/L，MgSO4·7H2O 0.2g/L，CaCl2 0.01g/L，FeSO4·7H2O 0.015g/L，MnSO4·H2O 0.01g/L。
As a further preferred, the sterile medium containing waste black liquor is: 10-15g/L (NH) of waste black liquor4)2SO4 2g/L，K2HPO4 1g/L，KH2PO4 1g/L，MgSO4·7H2O 0.2g/L，CaCl2 0.01g/L，FeSO4·7H2O 0.015g/L，MnSO4·H2O 0.01g/L。
In the invention, the concentration of the waste black liquor in the culture medium has certain influence on the activation effect of bacteria, and the excessive concentration of the black liquor can influence the osmotic pressure of bacterial cells to be unfavorable for the culture of the bacteria. Meanwhile, even if the concentration of the black liquor is in a proper range, the black liquor and the black liquor are cooperated with each other at a proper culture time and inoculation amount provided.
Preferably, the solid obtained is separated by acid precipitation, washed with ultrapure water for 3 times, and freeze-dried to constant weight to obtain the product with activated bacteria.
The process of the acid precipitation process in the invention is as follows: the pH was adjusted to 3 with HCl to precipitate the lignin from solution, and the solid was obtained by centrifugation.
In the preferable scheme, the temperature of the carbonization treatment is 700-900 ℃, the time of the carbonization treatment is 1-3h, and the temperature rise speed is 2-5 ℃/min.
Preferably, the inert atmosphere is a nitrogen atmosphere or an argon atmosphere.
Preferably, the purification treatment process comprises: cleaning the carbonized product to be neutral by using hydrochloric acid and deionized water in sequence; drying at 50-80 deg.C for 8-12h to obtain porous carbon material.
The porous carbon material prepared by the method.
The porous carbon material is applied to a super capacitor.
The preparation method provided by the invention has the advantages that:
(1) the waste black liquor is degraded by introducing lignin degrading bacteria to realize the biological activation of the waste black liquor, and the waste black liquor subjected to the biological activation treatment is carbonized to obtain the porous carbon material with a hierarchical pore structure and a high specific surface area.
(2) At present, no relevant report exists for using bacterial activation derived porous carbon for the super capacitor. The specific surface area of the hierarchical porous carbon prepared by the method is 1397-2240 m2Between/g.
(3) The specific volume of the porous carbon electrode material derived from the alkaline pretreated black liquor activated by bacteria can reach 330F/g under the current density of 0.5A/g, the specific volume of the porous carbon electrode material can reach 265F/g under the current density of 20A/g, good speed performance is shown, meanwhile, the specific capacitance can still keep more than 90% after 3000 cycles under the current density of 20A/g, and good cycle stability is achieved.
(4) The porous carbon electrode material has the characteristics of good electrochemical energy storage capacity, high specific capacitance, good cycling stability and environmental protection, so the porous carbon electrode material has wide application prospect in the technical field of novel supercapacitor electrode materials as a high-efficiency and light porous carbon electrode material.
The conception, specific material structure and technical effects of the present invention will be further described in conjunction with the accompanying drawings to fully understand the objects, features and effects of the present invention.
Drawings
FIG. 1: scanning Electron Microscope (SEM) images of the porous carbon material prepared by the present invention: (a) the bacterial-activated alkali prepared in example 1 pre-treated black liquor-derived porous carbon; (b) the alkaline pretreated black liquor-derived porous carbon prepared in comparative example 1;
FIG. 2: the bacterial activation alkali pretreatment black liquor derived porous carbon electrode material prepared in the embodiment 1 of the invention and the alkali pretreatment black liquor derived porous carbon electrode material prepared in the comparative example have constant current charge-discharge curves at the current density of 0.5A/g. In the figure, the abscissa represents time, and the ordinate represents voltage.
FIG. 3: the rate performance graph of the porous carbon electrode material derived from the bacteria activation alkaline pretreatment black liquor prepared in the embodiment 1 of the invention.
FIG. 4: the cycle life diagram of the bacterial activation alkaline pretreatment black liquor derived porous carbon electrode material prepared in example 1 of the invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the examples, but without limiting the invention.
Example 1
(1) Pulverizing corn stalk, sieving with 60 mesh sieve, cleaning with ultrapure water twice, and oven drying at 60 deg.C to constant weight.
(2) Waste biomass is placed in a container with proper size, NaOH solution with the concentration of 2 percent is added according to the solid-to-liquid ratio of 1:10(g/ml), the mixture is stood in a constant temperature environment of 120 ℃ for reaction for 1 hour, supernatant fluid is obtained by filtration and separation, and HCl is used for adjusting the pH value to 9, so that the alkali pretreatment black liquor is obtained.
(3) Inoculating the Cupriavidus basilenus B-8 thallus stored on an LB inclined plane into an LB liquid culture medium, and culturing at the temperature of 30 ℃ for 18h to obtain a seed solution of the Cupriavidus basilenus B-8; wherein the LB liquid culture medium comprises the following components in percentage by weight: 10g of peptone, 5g of yeast powder, 10g of sodium chloride and 1L of distilled water; the LB inclined plane is formed by adding 15g/L agar on the basis of the formula;
(4) centrifuging the seed solution of Cupriavidus basilensis B-8 obtained in the last step for 5 minutes under the condition of 10000rpm, discarding supernatant, and collecting thalli;
(6) inoculating the collected Cupriavidus basilensis B-8 thalli into an alkaline pretreatment black liquor culture medium according to the inoculation amount of 10% (the ratio of the volume of the transferred seed liquor to the volume of the culture solution after inoculation), culturing for 2 days at the temperature of 30 ℃ and with the pH value of 9, and performing acid precipitation, precipitation and separation to obtain the alkaline pretreatment black liquor activated by bacteria; the alkaline pretreatment black liquid culture medium comprises the following components in parts by weight: alkaline pretreatment black liquor 10g/L, (NH)4)2SO4 2g/L，K2HPO4 1g/L，KH2PO4 1g/L，MgSO4·7H2O 0.2g/L，CaCl2 0.01g/L，FeSO4·7H2O 0.015g/L，MnSO4·H2O 0.01g/L。
(7) The bacterial activated alkali pretreated black liquor obtained by repeatedly washing, filtering and separating with distilled water is placed in a vacuum freeze dryer to constant weight.
(8) Placing the bacteria-activated alkali pretreatment black liquor solid in a tubular furnace, staying for 2h at 900 ℃ at the heating speed of 5 ℃/min under the nitrogen atmosphere, naturally cooling to room temperature, washing the obtained product with dilute hydrochloric acid and deionized water until the pH value of the solution is 7, and drying the obtained precipitate for 12h at 80 ℃ to obtain the bacteria-activated alkali pretreatment black liquor-derived porous carbon.
The specific surface area of the porous carbon obtained by the practice of this example was 2240m2In g, and from FIG. 1 it can be seen that the porous carbon after activation with bacteria has been compared with the non-activated comparative exampleDeveloped pore structure.
The electrode material, the binder and the conductive carbon black are uniformly ground according to the ratio of 8:1:1, then coated on foamed nickel (1 x 1cm) to be dried (80 ℃) to prepare a working electrode, and the electrochemical performance of the working electrode is tested under a three-electrode system (a platinum sheet is used as a counter electrode, a Hg/HgO electrode is used as a reference electrode, and 6M KOH aqueous solution is used as electrolyte). Fig. 2 shows that bacterial activation leads to a significant increase in the specific capacitance of the porous carbon electrode material, and that the voltage drop on discharge has almost disappeared, indicating that the material has excellent electrical conductivity. The specific capacitance of the composite electrode is up to 330F/g under the condition that the current density is 0.5A/g; when the current density is increased to 20A/g, the capacitance value is 265F/g, the capacitance attenuation is small, 80% of capacitance can be reserved, and excellent rate performance is shown (figure 3).
The cyclic voltammogram was measured under a three-electrode system, and the results after 3000 cycles of the experiment are shown in FIG. 4. As can be seen from FIG. 4, the porous carbon electrode material derived from the bacterial activation alkaline pretreatment black liquor has good cycling stability, and the specific capacitance is still kept above 90% after 3000 cycles under the current density of 20A/g.
Example 2
(1) An alkali pretreated black liquor was prepared according to the steps (1) and (2) in example 1, and the pH of the black liquor was adjusted to 8 with HCl.
(2) Inoculating the Cupriavidus basilenus B-8 thallus stored on an LB inclined plane into an LB liquid culture medium, and culturing at the temperature of 30 ℃ for 18h to obtain a seed solution of the Cupriavidus basilenus B-8; wherein the LB liquid culture medium comprises the following components in percentage by weight: 10g of peptone, 5g of yeast powder, 10g of sodium chloride and 1L of distilled water; the LB inclined plane is formed by adding 15g/L agar on the basis of the formula;
(3) centrifuging the seed solution of Cupriavidus basilensis B-8 obtained in the last step for 5 minutes under the condition of 10000rpm, discarding supernatant, and collecting thalli;
(4) inoculating the collected Cupriavidus basilensis B-8 thallus in an alkaline pretreatment black liquid culture medium according to the inoculation amount of 10% (the ratio of the volume of the transferred seed liquid to the volume of the culture liquid after inoculation), culturing for 5 days at the temperature of 30 ℃ and the pH value of 8, and performing acid precipitation, precipitation and separation to obtain fine powderAlkaline pretreatment black liquor activated by bacteria; the alkaline pretreatment black liquid culture medium comprises the following components in parts by weight: alkaline pretreatment black liquor 15g/L, (NH)4)2SO4 2g/L，K2HPO4 1g/L，KH2PO4 1g/L，MgSO4·7H2O 0.2g/L，CaCl2 0.01g/L，FeSO4·7H2O 0.015g/L，MnSO4·H2O 0.01g/L
(7) The bacterial activated alkali pretreated black liquor obtained by repeatedly washing, filtering and separating with distilled water is placed in a vacuum freeze dryer to constant weight.
(8) Placing the bacteria-activated alkali pretreatment black liquor solid in a tubular furnace, staying for 2h at 800 ℃ at a heating speed of 5 ℃/min under the nitrogen atmosphere, naturally cooling to room temperature, washing the obtained product with dilute hydrochloric acid and deionized water until the pH value of the solution is 7, and drying the obtained precipitate for 12h at 80 ℃ to obtain the bacteria-activated alkali pretreatment black liquor-derived porous carbon.
The porous carbon prepared in this example had a specific surface area of 1856m2(ii) in terms of/g. The electrochemical properties were measured in the same manner as in example 1. The specific capacitance of the porous carbon electrode is up to 307F/g under the condition that the current density is 0.5A/g; when the current density is increased to 20A/g, the capacitance value is 257F/g, the capacitance attenuation is small, 83.7 percent of capacitance can be reserved, and excellent rate performance is shown.
Example 3
(1) An alkali pretreated black liquor was prepared according to the steps (1) and (2) in example 1, and the pH of the black liquor was adjusted to 7 with HCl.
(2) Inoculating the Cupriavidus basilenus B-8 thallus stored on an LB inclined plane into an LB liquid culture medium, and culturing at the temperature of 30 ℃ for 18h to obtain a seed solution of the Cupriavidus basilenus B-8; wherein the LB liquid culture medium comprises the following components in percentage by weight: 10g of peptone, 5g of yeast powder, 10g of sodium chloride and 1L of distilled water; the LB inclined plane is formed by adding 15g/L agar on the basis of the formula;
(3) centrifuging the seed solution of Cupriavidus basilensis B-8 obtained in the last step for 5 minutes under the condition of 10000rpm, discarding supernatant, and collecting thalli;
(4) inoculating the collected Cupriavidus basilensis B-8 thalli into an alkaline pretreatment black liquor culture medium according to the inoculation amount of 20% (the ratio of the volume of the transferred seed liquor to the volume of the culture solution after inoculation), culturing for 2 days at the temperature of 30 ℃ and with the pH value of 7, and performing acid precipitation, precipitation and separation to obtain the alkaline pretreatment black liquor activated by bacteria; the alkaline pretreatment black liquid culture medium comprises the following components in parts by weight: alkaline pretreatment black liquor 15g/L, (NH)4)2SO4 2g/L，K2HPO4 1g/L，KH2PO4 1g/L，MgSO4·7H2O 0.2g/L，CaCl2 0.01g/L，FeSO4·7H2O 0.015g/L，MnSO4·H2O 0.01g/L
(7) The bacterial activated alkali pretreated black liquor obtained by repeatedly washing, filtering and separating with distilled water is placed in a vacuum freeze dryer to constant weight.
(8) Placing the bacteria-activated alkali-pretreated black liquor solid in a tubular furnace, staying for 2h at 700 ℃ at a heating speed of 5 ℃/min under the nitrogen atmosphere, naturally cooling to room temperature, washing the obtained product with dilute hydrochloric acid and deionized water until the pH value of the solution is 7, and drying the obtained precipitate for 12h at 80 ℃ to obtain the bacteria-activated alkali-pretreated black liquor-derived porous carbon.
The specific surface area of the porous carbon prepared in this example was 1397m2(ii) in terms of/g. The electrochemical properties were measured in the same manner as in example 1. The specific capacitance of the porous carbon electrode reaches 285F/g under the condition that the current density is 0.5A/g; when the current density is increased to 20A/g, the capacitance value is 230F/g, the capacitance attenuation is small, 80.7% of capacitance can be reserved, and excellent rate performance is shown.
Comparative example 1
The preparation method of the porous carbon adopted in the comparative example only comprises the processes of alkali pretreatment and carbonization, and comprises the following specific steps:
(1) an alkali pretreated black liquor was prepared according to the steps (1) and (2) in example 1, and the pH of the black liquor was adjusted to 9 with HCl.
(2) And (3) putting the alkali pretreatment black liquor into a vacuum freeze dryer to constant weight. And placing the obtained solid in a tubular furnace, standing at 900 ℃ for 2h at a heating speed of 5 ℃/min in the nitrogen atmosphere, naturally cooling to room temperature, washing the obtained product with dilute hydrochloric acid and deionized water until the pH value of the solution is 7, and drying the obtained precipitate at 80 ℃ for 12h to obtain the alkali pretreatment black liquor derived porous carbon.
The porous carbon prepared by this comparative example had a specific surface area of 704m2(iv) much lower than bacterial activated alkali pretreated black liquor derived porous carbon (-1818 m)2In terms of/g). Fig. 1 is an SEM image of the prepared alkali-pretreated black liquor-derived porous carbon, and it can be seen that the porous carbon prepared by bacterial activation is not developed in its pore structure.
The electrochemical properties were measured in the same manner as in example 1. FIG. 2 shows that the mass specific capacitance of the porous carbon electrode is 170F/g under the current density of 0.5A/g, the capacitance value is obviously lower than that of example one (330F/g), and the pressure drop appearing during discharging of the comparative example is obviously larger than that of example 1, which shows that the specific surface area, the pore structure and the electrochemical performance of the bacteria on the alkali pretreatment black liquor activation can be obviously improved.
Comparative example 2
(1) An alkali pretreated black liquor was prepared according to the steps (1) and (2) in example 1, and the pH of the black liquor was adjusted to 9 with HCl.
(2) Inoculating the Cupriavidus basilenus B-8 thallus stored on an LB inclined plane into an LB liquid culture medium, and culturing at the temperature of 30 ℃ for 18h to obtain a seed solution of the Cupriavidus basilenus B-8; wherein the LB liquid culture medium comprises the following components in percentage by weight: 10g of peptone, 5g of yeast powder, 10g of sodium chloride and 1L of distilled water; the LB inclined plane is formed by adding 15g/L agar on the basis of the formula;
(3) centrifuging the seed solution of Cupriavidus basilensis B-8 obtained in the last step for 5 minutes under the condition of 10000rpm, discarding supernatant, and collecting thalli;
(4) inoculating the collected Cupriavidus basilensis B-8 thalli into an alkali pretreatment black liquor culture medium according to the inoculation amount of 20%, culturing for 2 days at the temperature of 30 ℃ and the pH value of 9, and performing acid precipitation, precipitation and separation to obtain bacteria-activated alkali pretreatment black liquor; wherein the base is pre-treatedThe black liquid treatment culture medium comprises the following components in percentage by weight: alkaline pretreatment black liquor 50g/L, (NH)4)2SO4 2g/L，K2HPO4 1g/L，KH2PO4 1g/L，MgSO4·7H2O 0.2g/L，CaCl2 0.01g/L，FeSO4·7H2O 0.015g/L，MnSO4·H2O 0.01g/L。
(7) The bacterial activated alkali pretreated black liquor obtained by repeatedly washing, filtering and separating with distilled water is placed in a vacuum freeze dryer to constant weight.
(8) Placing the bacteria-activated alkali pretreatment black liquor solid in a tubular furnace, staying for 2h at 900 ℃ at the heating speed of 5 ℃/min under the nitrogen atmosphere, naturally cooling to room temperature, washing the obtained product with dilute hydrochloric acid and deionized water until the pH value of the solution is 7, and drying the obtained precipitate for 12h at 80 ℃ to obtain the bacteria-activated alkali pretreatment black liquor-derived porous carbon.
The porous carbon obtained by this comparative example had a specific surface area of 969m2Lower than in the examples (. about.1818 m)2In terms of/g). The electrochemical properties were measured in the same manner as in example 1. The mass specific capacitance of the porous carbon electrode is 215F/g under the current density of 0.5A/g, and the capacity value of the porous carbon electrode is lower than that of the porous carbon electrode in the embodiment (307F/g), which shows that the black liquor loading capacity which needs to be adapted by the bacteria to the activation of the alkaline pretreatment black liquor is required.

Claims (9)

1. A method for preparing a porous carbon material by using waste black liquor activated by bacteria is characterized by comprising the following steps: inoculating lignin degrading bacteria into a sterile culture medium containing waste black liquor, separating the obtained solid by acid precipitation after culture, cleaning and drying to obtain a bacterium activated product, putting the bacterium activated product into an inert atmosphere for carbonization treatment, and purifying the obtained carbonized product to obtain the porous carbon material;
the lignin-degrading bacteria are the lignin-degrading bacteria Cupriavidus basilensis B-8 with the preservation number of CGMCC No. 4240.
2. The method for preparing a porous carbon material using the waste black liquor activated by bacteria according to claim 1, wherein: the pH value of the waste black liquor is firstly adjusted to 6-10.
3. The method for preparing a porous carbon material using the waste black liquor activated by bacteria according to claim 1, wherein: the waste black liquor is obtained by adding waste biomass into sodium hydroxide solution, reacting at the temperature of 100-120 ℃ for 30-120min, filtering and separating, and adjusting the pH value of the obtained supernatant to 6-10 to obtain the waste black liquor;
the solid-liquid mass volume ratio of the waste biomass to the sodium hydroxide solution is 1g:5-20 ml;
in the sodium hydroxide solution, the mass fraction of sodium hydroxide is 0.5-5%.
4. The method for preparing a porous carbon material using the waste black liquor activated by bacteria according to claim 1, wherein: the culture conditions of the lignin-degrading bacteria are that the inoculation amount is 5-20%, the temperature is 25-40 ℃, the pH value is 6-10, and the culture time is 1-5 days.
5. The method for preparing a porous carbon material using the waste black liquor activated by bacteria according to claim 1, wherein: the sterile culture medium containing the waste black liquor comprises: 5-15g/L (NH) of waste black liquor4)2SO42g/L，K2HPO4 1g/L，KH2PO4 1g/L，MgSO4·7H2O 0.2g/L，CaCl2 0.01g/L，FeSO4·7H2O 0.015g/L，MnSO4·H2O 0.01g/L。
6. The method for preparing a porous carbon material using the waste black liquor activated by bacteria according to claim 1, wherein: the temperature of the carbonization treatment is 700-900 ℃, the time of the carbonization treatment is 1-3h, and the temperature rising speed is 2-5 ℃/min.
7. The method for preparing a porous carbon material using the waste black liquor activated by bacteria according to claim 1, wherein: the purification treatment process comprises the following steps: cleaning the carbonized product to be neutral by using hydrochloric acid and deionized water in sequence; drying at 50-80 deg.C for 8-12h to obtain porous carbon material.
8. A porous carbon material prepared by the method of any one of claims 1 to 7.
9. The use of the hierarchical pore carbon according to claim 8, wherein: the porous carbon material is applied to a super capacitor.
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CN102093971A (en) * 2010-12-08 2011-06-15 中南大学 Bacterial strain Cupriavidus sp. B-8 for processing high-density papermaking black liquor and application thereof
CN102745689A (en) * 2012-07-30 2012-10-24 重庆工商大学 Method for preparing activated carbon by catalyzing and activating microorganism white-rot fungi or enzymes
CN108043359A (en) * 2017-11-30 2018-05-18 华南理工大学 A kind of lignin-degrading bacteria is modified lotus leaf and prepares the method for multi-stage porous charcoal and the application of the multi-stage porous charcoal

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CN102093971A (en) * 2010-12-08 2011-06-15 中南大学 Bacterial strain Cupriavidus sp. B-8 for processing high-density papermaking black liquor and application thereof
CN102745689A (en) * 2012-07-30 2012-10-24 重庆工商大学 Method for preparing activated carbon by catalyzing and activating microorganism white-rot fungi or enzymes
CN108043359A (en) * 2017-11-30 2018-05-18 华南理工大学 A kind of lignin-degrading bacteria is modified lotus leaf and prepares the method for multi-stage porous charcoal and the application of the multi-stage porous charcoal

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