28 results about "Pine sawdust" patented technology

The invention relates to a cavern environment-based tricholoma matsutake artificial cultivation method, and relates to the technical field of edible fungus cultivation, and the method comprises the following steps: mushroom stick preparation: mixing pine sawdust, corncob, bran, rice bran and an additive, adding water, bagging, sterilizing with high-pressure steam or normal-pressure steam, and inoculating tricholoma matsutake strains into each bag; environment construction: installing temperature and humidity regulation and light scattering equipment in cave depots, natural caves and air-raid shelters with the soil layer thickness of more than 50 m, the constant temperature of 10-20 DEG C and the humidity of 70-90%; in the hypha stage, the temperature is controlled to be 15-18 DEG C, the humidity is controlled to be 70-80%, and culture is conducted for 40-60 days; in the fruiting stage, the temperature is lowered to 12-16 DEG C in a stepped mode, the humidity is increased to 85-90%, and harvesting is conducted after fruiting bodies are induced to be formed. And recycling resources: crushing the waste mushroom sticks, and mixing the crushed waste mushroom sticks with soil according to a ratio of 1: 3 to prepare a fertilizer or mixing 10-30% of a new material for reuse. The produced tricholoma matsutake has the tricholoma matsutake alcohol content of 77.21 mg / kg and the polysaccharide content of 2.67%, the active components of the tricholoma matsutake are equal to those of wild tricholoma matsutake, the hypha germination rate is greater than or equal to 95%, the growth period is shortened to 40-60 days, and the raw material consumption is reduced by

The invention discloses preparation of biomass carbon quantum dots with pine sawdust as a raw material and an application method of the biomass carbon quantum dots in microalgae culture. According to the method, high-yield biomass carbon quantum dots are synthesized through an alkali-assisted oxidation process, and the blue light emission characteristic of the biomass carbon quantum dots is matched with the absorption spectrum of a microalgae photosynthetic system II (PSII). The method comprises the following specific steps: pretreating pine sawdust, then carrying out hydrothermal reaction to prepare pine derived hydrothermal carbon, and then carrying out alkaline oxidation stripping on the hydrothermal carbon through NaOH and H2O2 to extract the carbon quantum dots. The prepared biomass carbon quantum dots have the advantages of high yield, excellent optical performance, good water solubility and biocompatibility. In microalgae culture, the biomass concentration of microalgae and the synthesis efficiency of protein and lipid can be remarkably improved by adding a proper amount of the carbon quantum dots, and an efficient and environment-friendly solution is provided for waste recycling and microalgae high-value culture.

The invention relates to the technical field of termite trapping and killing, and particularly discloses an environment-friendly termite trapping and killing strip and a preparation method thereof. The environment-friendly termite trapping and killing strip is prepared from microcrystalline cellulose, sodium carboxymethyl cellulose, potassium sorbate, pine sawdust, tapioca flour, xanthan gum and killing microcapsules. The killing microcapsule comprises a capsule wall and a capsule core, wherein the capsule core is prepared from the following raw materials: triflumuron, diflubenzuron, ammonium chloride, petroleum ether and sodium dodecyl benzene sulfonate; the capsule wall is prepared from the following raw materials: modified chitosan, sodium alginate, modified corn straw powder, Arabic gum and a sugarcane extract. According to the environment-friendly termite trapping and killing strip, all the components are matched, the excellent insecticidal effect is achieved, the pesticide can be slowly released through the killing microcapsules, the insecticidal time is prolonged, and the prepared trapping and killing strip can kill insects for a long time.

The present invention belongs to the technical field of the cultivation of medicinal and edible fungi, and specifically relates to a fermented Poria cocos strain package with a mixed strain and its preparation method and application. The fermented Poria cocos strain package with a mixed strain provided by the present invention comprises the following components and their mass percentages: 70-96% of a mixed strain fermentation composition, 2-6% of sucrose, and 0.5-2.0% of gypsum powder; the mixed strain fermentation composition is a combination of a mixed strain fermentation of pine needles and pine branches, a mixed strain fermentation of wheat bran, and a mixed strain fermentation of pine sawdust. The fermented Poria cocos strain package with a mixed strain provided by the present invention can effectively improve the growth rate and quality of Poria cocos mycelium in the fermented strain package with a mixed strain by using different strains in combination and fermenting different raw materials, and improve the yield and quality of Poria cocos in the later underground cultivation.

The invention belongs to the technical field of termite prevention and control, and discloses a termite trapping and killing agent and a preparation method thereof.The termite trapping and killing agent is prepared from, by weight, 25-30 parts of pine sawdust powder, 10-20 parts of dustpan, 8-12 parts of sugarcane powder, 4-6 parts of pine pollen, 6-10 parts of compound insecticide, 1-3 parts of pheromone sustained-release microcapsules, 15-25 parts of hydrogel cellulose composite carrier and 1-3 parts of hydrocarbon mixing agent; according to the termite trapping and killing agent, fipronil and hexaflumuron are compounded, the termite killing effect is improved by compounding two agents with completely different action mechanisms, and the discovery rate, the feeding rate and the agent transmission efficiency of termites can be remarkably improved by adding the pheromone sustained-release microcapsules, the hydrogel cellulose composite carrier and the hydrocarbon mixing agent; and finally, eradication prevention and control on the ant nests are achieved, the environmental adaptability is high, and the lasting period is longer.

The invention discloses a porous carbon composite material prepared through pyrolysis and an application method of the porous carbon composite material in an electrode, and belongs to the technical field of porous carbon composites.The method comprises the following steps that pine sawdust is prepared, a small amount of pine sawdust powder is taken and subjected to thermogravimetric analysis testing in the nitrogen atmosphere, and a thermogravimetric curve and a differential curve of the pine sawdust powder are obtained; determining a temperature interval corresponding to a pyrolysis weightlessness peak; based on a thermogravimetric analysis result, a water-soluble phenolic resin solution and a phosphoric acid solution are blended and mixed, then pine sawdust powder is soaked in the mixed solution, full stirring and ultrasonic treatment are conducted to enable phosphoric acid molecules to be evenly loaded, then drying is conducted, and a pine sawdust precursor pretreated with phosphoric acid is obtained; the problems of pyrolysis conflict, agglomeration and the like in a traditional process are solved, the uniformity, the conductivity and the structural stability of the composite material are improved, the performance consistency of batches is ensured, and the method is suitable for being applied to supercapacitor electrodes.

This invention discloses an intelligent cultivation device based on corn and pine sawdust fermentation medium, comprising a symmetrical mounting frame. A guide loop is provided on one side of the mounting frame, and several planting mechanisms are connected via the symmetrical guide loops. Each planting mechanism includes a horizontal plate, and a movable plate is vertically slidably connected to the inner cavity of the horizontal plate. An installation groove is provided on the upper part of the mounting frame near the guide loop, and an adjustment mechanism for adjusting the position of the horizontal plate and the movable plate is provided within the inner cavity of the installation groove. The mounting frame is equipped with an adjustment mechanism with an electric push rod. The horizontal movement of the drive plate and driven plate causes the rack to engage with the toothed ring of the positioning ring, rotating the entire planting mechanism 180°. Then, guided by a wedge block, the driven rod moves the movable plate vertically downward within the horizontal plate, allowing waste medium to fall onto the conveyor belt and be transported away. After the movable plate moves downward, it reassembles with the horizontal plate and side plates to form a supporting frame, facilitating quantitative feeding again.

The invention discloses a collaborative treatment method for low-concentration nickel-containing wastewater. The nickel-containing wastewater is pumped into a reaction tank, carbide slag is added under uniform stirring to carry out a neutralization precipitation reaction, copper slag is added, and ultrasonic collaborative catalysis is used to break the complex nickel, coal slag and pine sawdust are added and aged, and the pH value of the solution is adjusted to 8-9 with acid. The main components of the precipitated slag are nickel hydroxide and calcium sulfate. The precipitated slag is used as a slag-forming agent in the nickel-iron pyrometallurgy process, and the nickel in the slag is recycled to achieve the effect of no waste residue discharge. The method of the invention can reduce the concentration of nickel ions in the wastewater from 50-1500ppm to below 0.5ppm, with a nickel removal rate of more than 99.9%, and the nickel ion concentration in the wastewater meets the emission standard. The raw materials used in the invention are all general industrial solid wastes, the operation is simple, the running cost is low, and the method is economical and efficient. It complies with the national environmental protection concept of treating waste with waste and comprehensively utilizing solid waste resources, is suitable for removing nickel ions in wastewater, and has good application prospects.

The application relates to a method for preparing natural gas by taking biomass and polyhydroxy compounds as raw materials. The method comprises the following steps: mixing the raw materials with water and a catalyst, and carrying out a reduction reaction in a reducing atmosphere to obtain a product containing natural gas; the raw materials are selected from biomass raw materials or / and polyhydroxy compounds; the biomass raw materials are selected from at least one of beech sawdust, poplar sawdust, pine sawdust, birch sawdust, wheat straw or corn straw; the polyhydroxy compounds are selected from at least one of cellulose, hemicellulose, cellobiose, xylose, guaiacol, sorbitol, isosorbide, glycerol, erythritol, xylitol or glucose; the catalyst comprises a carrier and an active component loaded on the surface of the carrier; the active component is selected from metal elements; the metal elements are selected from at least one of the single elements of ruthenium, rhodium, platinum, palladium or iridium. The method provides a path for converting biomass such as sawdust and polyhydroxy compounds to prepare natural gas, and has important industrial application prospects.

The invention belongs to the technical field of waste wood chip derived carbon, and particularly relates to a wood-based porous carbon solar evaporator and a preparation method. The solar evaporator provided by the invention is mainly prepared from pine sawdust and carboxymethyl cellulose (CMC), and the material has excellent hydrophilicity, strong light absorption and rapid water delivery capacity. The evaporation rate under irradiation of one sun reaches 3.41 kg m <-2 > h <-1 >, and the evaporation efficiency is 93.49%. Even in a high-salt environment (20 wt% of NaCl solution), the evaporation rate can still reach 2.83 kg m <-2 > h <-1 >. Good evaporation performance is maintained in a high-salt environment, and excellent self-cleaning capability and long-term operation stability are achieved. And the preparation method is simple, convenient, economical and environment-friendly, and a new material with a wide prospect is developed for an efficient solar desalination and water purification technology.

The invention relates to the technical field of edible fungus cultivation, in particular to an external nutrient source for manually increasing the yield of dictyophora rubrovolvata and a use method of the external nutrient source. The special external nutrient source for dictyophora rubrovolvata cultivation is prepared by fermenting raw materials such as pine sawdust, bran, corn flour, turfy soil and trace elements before planting; when dictyophora rubrovolvata is planted, a certain proportion of external nutrient source is added after the fungus sticks are debagged, the pretreated external nutrient source can be quickly infected by dictyophora indusiata hyphae, and fermented pine sawdust has the characteristics of decomposition resistance and difficulty in generating diseases and pests, so that the nutrient source can be provided for fruiting of the dictyophora indusiata fungus sticks in the later period; according to the invention, the special external nutrient source for dictyophora rubrovolvata prepared by using pine wood which cannot be used on other edible mushrooms as a main raw material is provided, and the method for reducing the unit area cultivation cost of dictyophora rubrovolvata and increasing the yield of dictyophora rubrovolvata is provided.

This invention discloses a method for cultivating Ganoderma lucidum using pine sawdust as a substrate, belonging to the field of edible and medicinal fungi cultivation technology. This invention uses pine sawdust and decayed pine sawdust as the main cultivation materials, combined with rice bran and various nutrient supplements to prepare a special culture medium. The total triterpenoid content of the cultivated Ganoderma lucidum can reach up to 1.408%, which is 2.01 times that of conventional broadleaf tree sawdust culture medium and 2.56 times that of straw culture medium. This invention not only improves the medicinal quality of Ganoderma lucidum but also realizes the high-value utilization of agricultural and forestry waste such as pine and fir sawdust, alleviating the pressure of raw material shortage in the edible and medicinal fungi industry, reducing production costs, and is suitable for large-scale promotion and application.

The invention discloses a preparation method of hydrogen by taking agricultural and forestry wastes as raw materials, which comprises the following steps: mixing the raw materials containing the agricultural and forestry wastes, a catalyst, an auxiliary agent and water, and reacting in a closed container in an inert gas atmosphere to obtain a product containing hydrogen; the forestry and agricultural residues are selected from at least one of beech sawdust, pine sawdust, birch sawdust, poplar sawdust, corncob and wheat straw. According to the method, the forestry and agricultural residues are directly catalytically converted under mild conditions to prepare the hydrogen, the yield of the hydrogen can reach 70 mmol, efficient and clean utilization of the forestry and agricultural residues can be achieved, the wastes are recycled, the process is environmentally friendly, equipment is simple, operation is easy, the treatment efficiency is high, and the method is suitable for industrial production. The method has great social benefits and economic benefits from the aspects of clean energy development and waste utilization.

The application discloses a preparation method and application of an oil spill remediation agent for treating marine oil spills, and the preparation method comprises the following steps: (1) mixing pine sawdust powder and an iron salt solution under oxygen limitation, pyrolyzing at 500-600 DEG C, and drying to obtain magnetic pine sawdust biochar; the mass-volume ratio (g:mL) of the pine sawdust powder and the iron salt solution is 1:10-20; the iron salt is composed of FeCl3 and FeSO4, and the molar ratio of FeCl3 to FeSO4 is 1:1-3; (2) mixing the magnetic pine sawdust biochar obtained in step (1), myristic acid and 10% (v / v) methanol aqueous solution, stirring, washing and drying to obtain the oil spill remediation agent; the oil spill remediation agent has higher adsorption capacity and suspension reuse performance, is beneficial to the removal of marine oil, reduces the treatment and recovery difficulty of traditional adsorption materials, and finally achieves the purpose of energy saving and environmental protection.

The invention discloses a continuous cropping obstacle soil conditioner based on subcritical hydrothermal biomass liquid and application of the continuous cropping obstacle soil conditioner. The biomass liquid is prepared by taking pine sawdust as a raw material, drying and crushing the pine sawdust, mixing the crushed pine sawdust with water in proportion, and carrying out hydrothermal reaction at 180-300 DEG C. The bacterial strain is added into continuous cropping obstacle soil according to a specific proportion for culture, soil-borne pathogenic bacteria can be effectively inhibited, beneficial microorganisms are enriched, the synergistic effect of bacteriostasis and growth promotion is achieved by regulating and controlling the microbial community structure and activating related functional genes, and a new technical approach is provided for green prevention and control of soil-borne diseases.

The invention discloses a preparation method of a microbial carrier, a microbial carrier introduction and domestication method and application, and the preparation method of the microbial carrier comprises the following steps: sequentially carrying out alkali treatment, washing, acid treatment and washing on a pine sawdust raw material to obtain neutral degreased pine sawdust; and drying the degreased pine sawdust to obtain the microbial carrier. The microbial carrier is applied to sewage treatment, sewage treatment is simulated, culture is performed for a period of time, microorganisms adsorbed on pine sawdust are gradually proliferated, extracellular enzyme slowly wraps the pine sawdust, active sawdust is formed, the active sawdust can serve as a microbial denitrification carbon source, the carbon source adding cost is saved, and the microbial denitrification effect is enhanced; the total nitrogen removal efficiency is relatively high. Meanwhile, the active sawdust is not easy to disintegrate, has a'mass center ', is large in specific gravity and high in precipitation speed, the precipitation speed is more than two times that of active sludge with the same sludge concentration, the solid-liquid separation effect is good, the sewage proportion in a treatment tank is favorably increased, and the productivity is improved.

The present invention relates to the technical field of urns, and specifically to a degradable and environmentally friendly urn processing equipment and a processing method thereof, comprising a main frame, wherein a raw pulp storage tank is fixedly connected to the interior of the main frame, and a plug with a handle is provided on the top surface of the raw pulp storage tank through a threaded insertion; a liquid storage tank is fixedly connected to the interior of the main frame, and a plug is provided on the top surface of the liquid storage tank through a threaded insertion; a first stirring rod is inserted through a bearing at the center position of the inner bottom surface of the raw pulp storage tank, and a second stirring rod is inserted through a bearing at the center position of the inner bottom surface of the liquid storage tank. In the present invention, the urn is biodegradable and its raw materials are mainly prepared from pine sawdust, so that a large amount of sawdust generated in the process of processing wooden equipment is utilized, which greatly saves the cost of producing the urn. At the same time, the added red sandalwood extract makes the urn itself have a slight fragrance, thereby improving the quality of the urn.

The invention relates to the technical field of separation of high-value chemicals in plant-derived bio-oil, and discloses a molecular distillation separation method of plant-derived bio-oil, which comprises the following steps: preparing bio-oil by using plant-derived pine sawdust as a biomass raw material; the method comprises the following steps: separating a component rich in levodextran from bio-oil by a molecular distillation method; the preparation method comprises the following steps: by taking an alkenylation multiple hydrogen bond type grafting monomer modified on a PVDF microfiltration membrane by a chemical grafting method and methacrylic acid as a composite functional monomer, pre-assembling the functional monomer and template molecule L-glucan through hydrogen bond interaction to form a polymeric monomer, and reacting under the action of a cross-linking agent and an initiator, so as to prepare the PVDF microfiltration membrane. The polymeric monomer is subjected to a polymerization reaction on the PVDF micro-filtration membrane to form a polymer, and the L-glucan molecularly imprinted PVDF micro-filtration membrane is prepared after template molecules are removed; the levo-glucan monomer is separated from a component rich in levo-glucan through the levo-glucan molecularly imprinted PVDF microfiltration membrane, and the purity of the obtained levo-glucan monomer is greater than or equal to 99.5%.

The invention belongs to the technical field of termite monitoring, prevention and control, discloses a preparation process of a pine-extraction high attractant, and aims to solve the problem of silence failure caused by microbial contamination due to attenuation of an attraction signal in long-term application of an existing termite attractant. The process comprises the following steps: loading a core attractant longifolene, a eucalyptus essential oil precursor, thymol and cellulase on a pine sawdust carrier together, and forming a co-adsorption and co-volatilization state by utilizing the eucalyptus essential oil precursor and thymol in cooperation with the longifolene, so as to inhibit the oxidative inactivation of the longifolene and prolong the action time of the longifolene. According to the invention, a volatile signal-ingestion interface coupling state is constructed and maintained, so that the long-term purity and stability of an inducing signal are ensured, and a chemical-biological synergistic amplification effect is formed, so that the problem of inducing failure is solved.

The present invention discloses a method for preserving Boletus aereus strains and a preservation medium, belonging to the field of preservation of fungal strains. The preservation medium for Boletus aereus sclerotia comprises the following raw materials in parts by weight: 45 - 48 parts of wheat grains, 15 - 18 parts of miscellaneous sawdust, 15 - 17 parts of pine sawdust, 18 - 19 parts of wheat bran, 1 - 2 parts of gypsum, and 1 - 2 parts of white sugar. The present invention also discloses a method for preserving Boletus aereus strains, which includes the step of inoculating Boletus aereus strains into the above-mentioned preservation medium for Boletus aereus sclerotia to culture sclerotia, and then preserving them under the condition of 15 - 18 °C. The preservation method of the present invention is simple to operate, the components of the preservation medium are easy to obtain, and the production cost is low. Moreover, by using the preservation method of the present invention, the viability and excellent properties of Boletus aereus sclerotia can be preserved for up to four and a half years, solving the problem that Boletus aereus is not easy to be simply and long-term preserved, and providing technical guarantee for the large-scale subculture and propagation of Boletus aereus.

The present application relates to the technical field of high-value chemical separation in plant source biological oil, and discloses a molecular distillation separation method of plant source biological oil, wherein pine sawdust of plant source is used as a biomass raw material to prepare biological oil; a component rich in levoglucosan is separated from the biological oil through a molecular distillation method; a functional monomer is pre-assembled with a template molecule levoglucosan through hydrogen bond action, using an alkenyl type multiple hydrogen bond grafting monomer and methyl methacrylate modified on a PVDF microfiltration membrane as a composite functional monomer; under the action of a crosslinking agent and an initiator, the polymerization monomer is polymerized on the PVDF microfiltration membrane to form a polymer; after removing the template molecule, a levoglucosan molecularly imprinted PVDF microfiltration membrane is prepared; the levoglucosan monomer is separated from the component rich in levoglucosan through the levoglucosan molecularly imprinted PVDF microfiltration membrane, and the purity of the obtained levoglucosan monomer is greater than or equal to 99.5%.

The invention discloses a preparation method of flavanone polyphenol nutritional wine with pine fragrance. The larch tree sawdust is used as a raw material source of flavanone polyphenol, and is a breathable and loose auxiliary material in wine brewing. The method comprises the following steps: mixing pine sawdust with wine brewing grains, steaming and moistening, adding distiller's yeast and combined enzyme, and gradually dissolving dihydroquercetin and other dihydroflavone polyphenol substances separated out from cellulose of the pine sawdust subjected to enzymolysis by the combined enzyme into fermented grains along with fermentation by adopting a pure grain white wine solid-state wine brewing process in the brewing fermentation process; introducing saturated steam to promote the transfer of the extract; and carrying out the procedures of distilling to take wine, separating vinasse, regulating acid, crystallizing, redissolving and the like to prepare the flavanone polyphenol nutritional wine with pine fragrance. Flavonoid polyphenols generated in the wine brewing process are redissolved in the wine, so that the wine is rich in dihydroquercetin, soft in taste, easy to accept and unique in pine aroma, pollution of reagents such as industrial ethanol and methanol is avoided in the whole preparation process, and the food safety is high.

The invention relates to the technical field of fuels, and provides a high-calorific-value biomass pellet fuel and a preparation method thereof. The invention relates to a preparation method of a high-calorific-value biomass pellet fuel. The preparation method comprises the following steps: soaking pine sawdust and straws in a mixed solution of citric acid and hydrochloric acid, and then carrying out wet ball milling to obtain a main fuel base material; the preparation method comprises the following steps: carrying out dry mixing on a main fuel base material and biomass charcoal at 100-120rpm for 10-15min; preparing a coating solution from sodium lignin sulfonate, nano silicon dioxide, a silane coupling agent, polyethylene glycol 400, water and ethanol; extruding, discharging, drying, spraying a coating liquid, stirring, and coating, so as to obtain the product. According to the high-calorific-value biomass pellet fuel and the preparation method thereof, the problem that the biomass pellet fuel absorbs moisture in the storage process is solved, and the quality stability of the biomass pellet fuel is improved.

The application provides an artificial material substrate for cultivation of Phaeolus gilvus and a cultivation method, and belongs to the technical field of cultivation of Phaeolus gilvus. The artificial material substrate comprises the following raw materials in percentage by weight: pine sawdust 78-85%, bran 11-15%, corn flour 3-8%, and gypsum 0.5-2%. The cultivation method of Phaeolus gilvus comprises the following steps: preparation of cultivation species, mycelium culture, punching and germination culture, development of fruiting bodies and harvesting; the preparation of cultivation species is to inoculate liquid strains into the aforementioned artificial material substrate in a bag, and then to send the obtained inoculated bag into a constant-temperature incubation room for culture. The cultivation substrate can support the whole growth cycle of Phaeolus gilvus from liquid strains to mature fruiting bodies, significantly shortens the mycelium full-bag and fruiting body development cycle, and has high utilization efficiency. The cultivation method of Phaeolus gilvus based on the above cultivation substrate is simple in operation, stable in yield, easy to manage and replicable in process.

The invention discloses a process for cultivating sparassis crispa by using multiple layers of different culture materials, and relates to the technical field of edible fungus cultivation. The process comprises the following steps: preparing a culture material, preparing a cultivation fungus bottle or fungus bag, culturing the fungus bottle or fungus bag, performing primordium induction culture, and performing fruiting management. According to the method, the culture material is divided into the growth layer and the induction layer by adopting an innovative fungus bottle or fungus bag preparation mode, the induction layer is composed of the culture medium which is more favorable for inducing the formation of the sparassis crispa primordium, the growth layer is composed of the culture material such as pine sawdust which is commonly used for cultivation, and industrial cultivation of the sparassis crispa is realized in a bottle cultivation or bag cultivation mode. According to the cultivation method, the primordium is easy and fast to form and good in consistency, and the problems that hyphae are difficult to climb on the wall, the primordium is slow to form and the consistency is poor in an existing industrial cultivation mode can be effectively solved.

The application discloses a preparation method of high specific capacitance surface modified activated carbon and application thereof, and belongs to the technical field of biomass pyrolysis methods. Biomass such as pine sawdust is used as a raw material, and clean energy is fully utilized by using the biomass to prepare the activated carbon, so that renewable resources are fully utilized; and the preparation process comprises drying, crushing, pyrolysis, washing and surface modification. The activated carbon provided by the application is used to prepare a working electrode for specific capacitance test, the surface functional groups are regulated, and the specific capacitance is improved; hot hydrochloric acid is used for acid washing during washing, can effectively remove ash, HNO3 is a strong oxidant and has corrosivity, strongly corrodes internal pores of the biochar, changes pore size structure of the biochar, and forms a large number of oxygen-containing functional groups in the internal pores of the biochar. After HNO3 modification, the content of C=O in the biochar is increased, more pseudo capacitance can be provided for the biochar, the specific capacitance of the biochar is increased, and therefore, the electrochemical performance of the biochar is good.

The invention discloses a rapid preparation method of poria cocos bagged material guiding sclerotium and a poria cocos factory-like bagged material cultivation method. The method comprises the following steps: firstly, preparing a fungus bag, inoculating a poria cocos strain, culturing until concentrated white hyphae cover the surface of the fungus bag, and inducing the formation and expansion of sclerotia through temperature difference and high dissolved oxygen stimulation to obtain poria cocos bag material meat guiding sclerotia; secondly, a cultivation material with the low pine sawdust proportion is adopted for preparing fungus bags, inoculated cultivation is conducted till the fungus bags are full of dense white hyphae, the prepared meat guiding sclerotium and the cultivation material are fused, then the mixture is moved into a room for soil covering cultivation, harvesting can be completed after 35-40 days, and the obtained poria cocos sclerotium is regular in shape and uniform in size. The poria cocos bag material cultivation method is short in period, high in biotransformation rate and beneficial to ecology, pine sawdust in the cultivation material is reduced to 30%, cutting of pine resources is greatly reduced, meanwhile, soil covering materials can be recycled for three rounds, and the problem of continuous cropping obstacles of poria cocos cultivation is effectively solved.

The present invention discloses a pyrite inhibitor, its preparation method, and application. The preparation method specifically comprises: grinding sawdust and then pyrolyzing it under a nitrogen atmosphere; condensing and collecting the gas from the pyrolysis product to obtain a pyrolysis liquid, namely the pyrite inhibitor. The present invention innovatively uses pine sawdust pyrolysis liquid as a pyrite inhibitor and applies it to the flotation separation of lead-sulfur or copper-sulfur. This not only achieves excellent flotation separation effects, but also enables high-value utilization of biomass pyrolysis products, helps save mineral processing costs, and has good social, environmental, and economic benefits.