CN113648973A - Preparation method of sludge-based biochar doped with mushroom bran - Google Patents
Preparation method of sludge-based biochar doped with mushroom bran Download PDFInfo
- Publication number
- CN113648973A CN113648973A CN202111098405.XA CN202111098405A CN113648973A CN 113648973 A CN113648973 A CN 113648973A CN 202111098405 A CN202111098405 A CN 202111098405A CN 113648973 A CN113648973 A CN 113648973A
- Authority
- CN
- China
- Prior art keywords
- sludge
- mushroom bran
- biochar
- mushroom
- doped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
-
- 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
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
Abstract
The invention relates to the field of research and development and application of environment restoration materials, and discloses a preparation method of sludge-based biochar doped with mushroom bran, which comprises the following process steps: respectively naturally drying the sludge and the mushroom bran; respectively putting the air-dried sludge and the fungus chaff into a grinder for grinding and then sieving by a 60-mesh sieve; uniformly mixing the sludge and the mushroom bran; putting the sludge and the mushroom bran into a muffle furnace according to a certain raw material ratio, and pyrolyzing for a certain time under a certain temperature condition to obtain the sludge-mushroom bran composite biochar. The yield of the biochar is 51-60%, the methylene blue adsorption value is 18-25 mg/g, and the adsorption rate is 61-84%. The sludge-mushroom bran composite biochar adsorbing material is developed by taking two solid wastes, namely dewatered sludge of an urban sewage treatment plant and mushroom bran which is a waste material in edible mushroom production, as raw materials and adopting an oxygen-limited pyrolysis technology, so that the cost can be saved, the quality of the sewage peat can be improved, and a new material can be provided for environmental remediation; but also can realize the reduction, the resource and the harmless treatment of the two.
Description
Technical Field
The invention relates to the field of research, development and application of environment restoration materials, in particular to a preparation method of sludge-based biochar doped with mushroom bran.
Background
In recent years, with the acceleration of urbanization and the improvement of industrialization level, people generate a large amount of domestic and industrial sewage in production and life, the government of China continuously strengthens the intensity of environmental protection, the municipal sewage treatment rate is continuously improved, and the amount of residual sludge discharged from municipal sewage treatment plants is also rapidly increased.
The components of the sludge are complex and changeable, besides rich nitrogen, phosphorus, potassium and various nutrient substances and trace elements, heavy metals such as cadmium (Cd), lead (Pb), copper (Cu), zinc (Zn), nickel (Ni), chromium (Cr) and the like, organic pollutants such as Polycyclic Aromatic Hydrocarbons (PAHs), phthalate esters (PAEs) and the like, zoogloea and parasites formed by various microorganisms and the like can be concentrated, and if the sludge is not properly treated, the sludge can cause serious secondary pollution to the environment. The water control and mud control, which is equal to the water control, has become a consensus in the industry, and the reasonable and effective treatment of the sludge with huge amount has become an irreparable task for environmental protection workers.
At present, common sludge treatment and recycling technologies at home and abroad mainly comprise landfill, incineration, composting, building material utilization, biochar preparation and the like. Compared with other technologies, the treatment mode of preparing the sludge into the biochar can realize reduction, stabilization, harmless and recycling treatment of the sludge, achieve the purpose of waste utilization, and simultaneously has the advantages of low treatment cost, no secondary pollution and the like.
The biochar is a very high-efficiency adsorbent which is widely accepted and used, and has the advantages that due to the fact that the biochar is rich in surface functional groups, large specific surface area and high porosity are achieved, the specific surface area of the biochar is greatly increased through the pores, and due to the structural characteristics, the biochar has excellent adsorption capacity and has a good removal effect on antibiotics, heavy metal ions, organic pollutants, dyes and the like in sewage and wastewater. Meanwhile, the composite biochar prepared from the sludge and other materials has great application potential in the aspects of environmentality, materials science, agriculture and the like, and has attracted wide attention of various industries at present.
The mushroom bran is a culture medium residue obtained after edible mushroom cultivation and delivery are carried out by using wood chips, straws and other raw materials, is a main solid waste in the edible mushroom industry, is commonly called edible mushroom cultivation waste, mushroom residue or excess material, and is a compound of components such as edible mushroom mycelium residues and crude fibers with qualitative changes through the enzymolysis of the edible mushrooms. It is a waste material with annual output more than 6000 million tons, and contains a large amount of crude fiber such as cellulose and lignin, nutrient substances such as crude fat and crude protein, and mineral elements. A large amount of crude fibers such as cellulose, lignin and the like contained in the biological carbon can just make up for the deficiency of low carbon content of the biological carbon in the sludge, and the quality of the biological carbon in the sludge is improved.
Disclosure of Invention
The invention aims to provide a preparation method of sludge-based biochar doped with mushroom bran, which aims to solve the problems of reduction, recycling and harmless treatment of excess sludge and agricultural wastes in sewage treatment plants and obtain a sludge-based biochar adsorbing material with excellent performance.
The technical scheme adopted by the invention is carried out according to the following steps:
(1) respectively naturally drying the municipal sludge and the mushroom bran;
(2) respectively putting the air-dried municipal sludge and the mushroom bran into a pulverizer to be pulverized and then sieving the pulverized municipal sludge and the mushroom bran with a 60-mesh sieve;
(3) uniformly mixing the sludge and the mushroom bran;
(4) putting the sludge and the mushroom bran into a muffle furnace according to a certain raw material ratio, and pyrolyzing for a certain time under a certain temperature condition to obtain the sludge-mushroom bran composite biochar.
In the method, the municipal sludge in the step (1) is dewatered sludge of a municipal sewage treatment plant.
In the method, the mushroom bran in the step (1) is mushroom bran which is a waste material in edible mushroom production.
In the method, the sludge in the step (3) accounts for 40-60% of the total amount of the sludge and the fungus chaff.
In the above method, the pyrolysis conditions in the step (4) are as follows: the pyrolysis temperature is 500-700 ℃, and the pyrolysis time is 2-4 h.
In the method, the yield of the biochar is 51-60%, the methylene blue adsorption value is 18-25 mg/g, and the adsorption rate is 61-84%.
The invention has the advantages that:
the sludge-mushroom bran composite biochar adsorbing material is developed by taking two solid wastes, namely dewatered sludge of an urban sewage treatment plant and mushroom bran which is a waste material in edible mushroom production, as raw materials and adopting an oxygen-limited pyrolysis technology, so that the cost can be saved, the quality of the sewage peat can be improved, and a new material can be provided for environmental remediation; but also can realize the reduction, the resource and the harmless treatment of the two.
Drawings
FIG. 1 is an SEM photograph of biochar prepared in example 1 of the present invention.
Fig. 2 is an SEM image of biochar prepared in example 2 of the present invention.
FIG. 3 is an SEM photograph of biochar prepared in example 3 of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the following figures and specific examples, which are intended to illustrate the invention and are not to be construed as limiting the scope of the invention, except that materials or processing techniques not specifically described are all conventional commercially available materials or conventional processing techniques in the art.
In the following examples, the biochar yield is defined as:
in the following examples, the adsorption properties of biochar towards methylene blue are defined as: according to the national standard of methylene blue value determination of wood activated carbon test method (GB/T12496.8-1999), the adsorption value, adsorption rate and total adsorption amount of methylene blue of the biochar are determined, and each sample is provided with 3 replicates.
Example 1
And respectively naturally air-drying the sludge and the mushroom bran, then putting the sludge and the mushroom bran into a grinder for grinding, sieving by a 60-mesh sieve, mixing the sludge and the mushroom bran according to the proportion of 50 percent of the total amount of the sludge and the mushroom bran, putting the mixture into a muffle furnace for pyrolysis for 4 hours at 500 ℃ to obtain a sludge-mushroom bran composite biochar sample.
The yield of the biochar sample prepared by the step of the embodiment is 53.55%; the methylene blue adsorption value is 25.17 mg/g; the adsorption rate was 83.90%. Fig. 1 provides an SEM image of the biochar sample prepared in this example, and it can be seen that the biochar exhibits a regular long duct-like porous structure with rich, clear and well-developed pore structure.
Example 2
And respectively naturally air-drying the sludge and the mushroom bran, then putting the sludge and the mushroom bran into a grinder for grinding, sieving by a 60-mesh sieve, mixing the sludge and the mushroom bran according to the proportion of 50 percent of the total amount of the sludge and the mushroom bran, putting the mixture into a muffle furnace for pyrolysis for 2 hours at 600 ℃ to obtain a sludge-mushroom bran composite biochar sample.
The yield of the biochar sample prepared by the step of the embodiment is 53.65%; the methylene blue adsorption value is 23.12 mg/g; the adsorption rate was 77.07%. Fig. 2 provides an SEM image of the biochar sample prepared in this example, and it can be seen from the image that the biochar surface is rough, has a relatively obvious granular feel, has a lamellar structure, has a large pore size, and appears to be more loose and wrinkled as a whole.
Example 3
And respectively naturally air-drying the sludge and the mushroom bran, then putting the sludge and the mushroom bran into a grinder for grinding, sieving by a 60-mesh sieve, uniformly mixing the sludge and the mushroom bran according to the proportion of 50 percent of the total amount of the sludge and the mushroom bran, putting the mixture into a muffle furnace for pyrolysis for 2 hours at 700 ℃ to obtain a sludge-mushroom bran composite biochar sample.
The yield of the biochar sample prepared by the step of the embodiment is 51.6 percent; the methylene blue adsorption value is 22.04 mg/g; the adsorption rate was 73.47%. Fig. 3 provides an SEM image of the biochar sample prepared in this example, and it can be seen from the image that the biochar surface is very rough, has a relatively obvious granular feel, and has a disordered pore distribution, and exhibits an irregular pinhole structure with different sizes.
Claims (6)
1. A preparation method of sludge-based biochar doped with mushroom bran is characterized by comprising the following steps:
(1) respectively naturally drying the sludge and the mushroom bran;
(2) respectively putting the air-dried sludge and the fungus chaff into a grinder for grinding and then sieving by a 60-mesh sieve;
(3) uniformly mixing the sludge and the mushroom bran according to a certain raw material ratio;
(4) and (3) putting the sludge and the mushroom bran into a muffle furnace, and pyrolyzing for a certain time at a certain temperature to obtain the sludge-mushroom bran composite biochar.
2. The method for preparing mushroom bran-doped sludge-based biochar according to claim 1, wherein the sludge in the step (1) is dewatered sludge of a municipal sewage treatment plant.
3. The method for preparing municipal sludge-based biochar doped with mushroom bran according to claim 1, wherein the mushroom bran in the step (1) is mushroom bran which is a waste material in edible mushroom production.
4. The method for preparing the mushroom bran-doped sludge-based biochar as claimed in claim 1, wherein the sludge in the step (3) accounts for 40-60% of the total amount of the sludge and the mushroom bran.
5. The preparation method of mushroom bran-doped sludge-based biochar as claimed in claim 1, wherein the pyrolysis conditions in the step (4) are as follows: the pyrolysis temperature is 500-700 ℃, and the pyrolysis time is 2-4 h.
6. The method for preparing the mushroom bran-doped sludge-based biochar as claimed in claim 1, wherein the yield of the biochar is 51-60%, the methylene blue adsorption value is 18-25 mg/g, and the adsorption rate is 61-84%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098405.XA CN113648973A (en) | 2021-09-18 | 2021-09-18 | Preparation method of sludge-based biochar doped with mushroom bran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098405.XA CN113648973A (en) | 2021-09-18 | 2021-09-18 | Preparation method of sludge-based biochar doped with mushroom bran |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113648973A true CN113648973A (en) | 2021-11-16 |
Family
ID=78483911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111098405.XA Pending CN113648973A (en) | 2021-09-18 | 2021-09-18 | Preparation method of sludge-based biochar doped with mushroom bran |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113648973A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512947A (en) * | 2016-12-21 | 2017-03-22 | 福建师范大学 | Preparation method of sludge-based charcoal doped with bamboo and wood powder |
| CN106544037A (en) * | 2016-10-21 | 2017-03-29 | 吴迪 | A kind of preparation method of biological soil conditioner |
| CN106732361A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of the paper powder that adulterates |
| CN107088399A (en) * | 2017-05-25 | 2017-08-25 | 东北农业大学 | A kind of preparation method and applications of germ bran biological carbon adsorbent |
| CN108996697A (en) * | 2018-07-06 | 2018-12-14 | 淮阴师范学院 | A kind of method of mushroom bran absorption degradation waste water from dyestuff |
| CN111218286A (en) * | 2020-01-17 | 2020-06-02 | 上海理工大学 | Pigeon manure-based biochar material and preparation method and application thereof |
-
2021
- 2021-09-18 CN CN202111098405.XA patent/CN113648973A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106544037A (en) * | 2016-10-21 | 2017-03-29 | 吴迪 | A kind of preparation method of biological soil conditioner |
| CN106512947A (en) * | 2016-12-21 | 2017-03-22 | 福建师范大学 | Preparation method of sludge-based charcoal doped with bamboo and wood powder |
| CN106732361A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal of the paper powder that adulterates |
| CN107088399A (en) * | 2017-05-25 | 2017-08-25 | 东北农业大学 | A kind of preparation method and applications of germ bran biological carbon adsorbent |
| CN108996697A (en) * | 2018-07-06 | 2018-12-14 | 淮阴师范学院 | A kind of method of mushroom bran absorption degradation waste water from dyestuff |
| CN111218286A (en) * | 2020-01-17 | 2020-06-02 | 上海理工大学 | Pigeon manure-based biochar material and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 黄建立: "印染污泥与废弃菌糠协同热处置特性及Cl/S 转化机制研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016176906A1 (en) | Method for producing canna indica biochar capable of adsorbing ammonia nitrogen and cadmium simultaneously | |
| CN112374941B (en) | Soil remediation agent prepared from crop straws and biochar | |
| CN105126756A (en) | Preparation method for papermaking argillaceous activated carbon adsorption material | |
| CN109534432B (en) | Preparation method of biochar modified material for removing phosphorus in eutrophic water body | |
| CN107252676A (en) | A kind of preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant | |
| CN104511272A (en) | Preparation and application methods of adsorbent for removing cadmium in wastewater | |
| CN109500062B (en) | Preparation method of waste tire resource material improved by excess sludge | |
| CN112126437B (en) | Composite modified biomass charcoal stabilizer and preparation method and application thereof | |
| CN111468078A (en) | Reed stem biochar composite material and application thereof in remediation of cadmium-polluted soil | |
| CN109173999A (en) | A kind of preparation method and applications of biology carbon microspheres | |
| CN112337033B (en) | Harmless treatment method of abamectin slag, product and application of product as sandy soil modifier | |
| CN105498691A (en) | Method for preparing ramie biochar for treating hexavalent chromium wastewater | |
| CN110947364A (en) | Heavy metal contaminated soil remediation agent and application thereof | |
| CN113750962A (en) | Method for preparing modified biochar by co-pyrolyzing red mud and pennisetum hydridum straws and application of modified biochar | |
| CN113171750B (en) | Method for preparing biochar from bottom mud and garden garbage and application of biochar | |
| CN110922010A (en) | Benthic microorganism ecological restoration agent for black and odorous water body sediment and preparation method thereof | |
| CN108569768B (en) | Method for preparing constructed wetland substrate from corn straws | |
| Chen et al. | Remediation of Soil Contaminated by Heavy Metals Using Biochar: Strategies and Future Prospects. | |
| CN113648973A (en) | Preparation method of sludge-based biochar doped with mushroom bran | |
| CN109158083B (en) | Preparation method and application of biomass-based carbon material | |
| CN112979394B (en) | Method for preparing soil improvement matrix from solid waste of coal-fired power plant | |
| CN115672276A (en) | Method for enhancing copper ion adsorption of biochar by utilizing magnesium chloride modification | |
| CN115744902A (en) | High-performance sludge activated carbon and preparation method and application thereof | |
| CN115007632A (en) | Preparation method and application of heavy metal pollution repairing agent | |
| CN115093088A (en) | Preparation method of sludge synergistic decrement attenuation treatment agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |