AU2021102540A4 - Preparation method and application of biodegradable carbon granules - Google Patents
Preparation method and application of biodegradable carbon granules Download PDFInfo
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- AU2021102540A4 AU2021102540A4 AU2021102540A AU2021102540A AU2021102540A4 AU 2021102540 A4 AU2021102540 A4 AU 2021102540A4 AU 2021102540 A AU2021102540 A AU 2021102540A AU 2021102540 A AU2021102540 A AU 2021102540A AU 2021102540 A4 AU2021102540 A4 AU 2021102540A4
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- 230000000813 microbial effect Effects 0.000 claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 37
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 13
- 229920002635 polyurethane Polymers 0.000 claims abstract description 13
- 239000004814 polyurethane Substances 0.000 claims abstract description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- 239000008187 granular material Substances 0.000 claims abstract description 8
- 239000004021 humic acid Substances 0.000 claims abstract description 8
- 244000063299 Bacillus subtilis Species 0.000 claims abstract description 7
- 235000014469 Bacillus subtilis Nutrition 0.000 claims abstract description 7
- 241000881860 Paenibacillus mucilaginosus Species 0.000 claims abstract description 7
- 241000589540 Pseudomonas fluorescens Species 0.000 claims abstract description 7
- 241000223259 Trichoderma Species 0.000 claims abstract description 7
- 239000007633 bacillus mucilaginosus Substances 0.000 claims abstract description 7
- 239000010902 straw Substances 0.000 claims description 17
- HHLFWLYXYJOTON-UHFFFAOYSA-N glyoxylic acid Chemical compound OC(=O)C=O HHLFWLYXYJOTON-UHFFFAOYSA-N 0.000 claims description 10
- 239000003344 environmental pollutant Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 231100000719 pollutant Toxicity 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 16
- 238000006731 degradation reaction Methods 0.000 abstract description 16
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 11
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 239000012876 carrier material Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 12
- 239000002689 soil Substances 0.000 description 8
- 239000010865 sewage Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000123650 Botrytis cinerea Species 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- HFZWRUODUSTPEG-UHFFFAOYSA-N 2,4-dichlorophenol Chemical compound OC1=CC=C(Cl)C=C1Cl HFZWRUODUSTPEG-UHFFFAOYSA-N 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N61/00—Biocides, pest repellants or attractants, or plant growth regulators containing substances of unknown or undetermined composition, e.g. substances characterised only by the mode of action
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
- A01N63/22—Bacillus
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
- A01N63/27—Pseudomonas
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/30—Microbial fungi; Substances produced thereby or obtained therefrom
- A01N63/38—Trichoderma
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/02—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by biological methods, i.e. processes using enzymes or microorganisms
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/22—Organic substances containing halogen
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/20—Organic substances
- A62D2101/28—Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen
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- Environmental Sciences (AREA)
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- Dentistry (AREA)
- Plant Pathology (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biological Depolymerization Polymers (AREA)
- Fertilizers (AREA)
Abstract
Austracy
The present invention discloses a preparation method and an application of
biodegradable carbon granules, and belongs to the technical field of novel
environment-friendly materials. The preparation method includes the following steps:
preparing a microbial agent; mixing the microbial agent with carbon granules to
obtain a material A; adding water into polyurethane and polyvinyl alcohol to obtain
a material B; uniformly mixing the materials A and B; adding a cross-linking agent
into the mixture to react; and drying the product to obtain a biodegradable carbon
granule. The microbial agent includes thermophilc anaerobes, Bacillus
mucilaginosus, Bacillus subtilis, Trichoderma, pseudomonas fluorescens and humic
acid. In the present invention, a carrier material with excellent performance is
prepared by improving a preparation process of the carbon granules; and after the
material is combined with the microbial agent, adaptive capacity of microbial floras
in organic pollutants is increased; and degradation efficiency is increased.
Meanwhile, degradation maintenance time is increased, which is favorable for
reducing the pollution control cost.
1
Description
Austracy
The present invention discloses a preparation method and an application of biodegradable carbon granules, and belongs to the technical field of novel environment-friendly materials. The preparation method includes the following steps: preparing a microbial agent; mixing the microbial agent with carbon granules to obtain a material A; adding water into polyurethane and polyvinyl alcohol to obtain a material B; uniformly mixing the materials A and B; adding a cross-linking agent into the mixture to react; and drying the product to obtain a biodegradable carbon granule. The microbial agent includes thermophilc anaerobes, Bacillus mucilaginosus, Bacillus subtilis, Trichoderma, pseudomonas fluorescens and humic acid. In the present invention, a carrier material with excellent performance is prepared by improving a preparation process of the carbon granules; and after the material is combined with the microbial agent, adaptive capacity of microbial floras in organic pollutants is increased; and degradation efficiency is increased. Meanwhile, degradation maintenance time is increased, which is favorable for reducing the pollution control cost.
Description
Technical Field
The present invention relates to the technical field of novel environment-friendly materials, and particularly relates to a preparation method and an application of biodegradable carbon granules.
Background
At present, treatment of municipal solid wastes has always been one of the problems that trouble sustainable development. Ecological security of soil and human health are severely threatened by organic pollutants. A microbial preparation can be used for removing the organic pollutants. However, the current microbial soil remediation technology is poor in degradation effect and low in reaction speed; and heavy metals are often mixed in the organic pollutants, thereby inhibiting biodegradation. Activated carbon (charcoal) is a carbon that is specially treated, and is prepared by heating organic raw materials (such as husks, coal and wood) under the condition of air isolation to decrease non-carbon components (this process is called carbonization) and then making the materials react with gas to erode the surface and produce a highly developed micro-pore structure. A combination of a microbial agent and the activated carbon is used for biodegrading the organic pollutants, and thus degradation efficiency may be significantly increased and a long-term degradation effect may be maintained. Therefore, how to provide a biodegradable carbon granule is a problem that urgently needs to be solved by those skilled in the art.
Description
Summary In view of this, the present invention provides a preparation method and an application of biodegradable carbon granules. In the present invention, by optimizing a ratio of a microbial agent and improving a preparation process of carbon granules, the prepared biodegradable carbon granules have relatively persistent degradation effects. To achieve the above purpose, technical solutions of the present invention are as follows: A preparation method of the biodegradable carbon granules includes the following steps: (1) preparing a microbial agent; (2) mixing the microbial agent with carbon granules to obtain a material A; (3) adding water into polyurethane and polyvinyl alcohol to obtain a material B; (4) uniformly mixing the materials A and B; adding a cross-linking agent into the mixture to react; and drying the product to obtain a biodegradable carbon granule. The microbial agent includes the following components in parts by mass: -15 parts of thermophilc anaerobes, 10-15 parts of Bacillus mucilaginosus, 5-10 parts of Bacillus subtilis, 5-10 parts of Trichoderma, 5-10 parts of pseudomonas fluorescens and 50-100 parts of humic acid. Optionally, a preparation method of the microbial agent includes: activating various strains; and mixing the activated strains according to a ratio to obtain the microbial agent. The present invention has beneficial effects as follows: in combination of the above microbes, capacity of degrading the organic pollutants may be significantly increased; and pollution control cost is reduced; meanwhile, the added humic acid may stimulate growth and reproduction of beneficial microbes in soil and increase
Description
natural disease and pest resistance of plants, can inhibit pathogenic bacteria in multiple soil environments, and achieves an effect of further improving the soil. Optionally, a preparation method of the carbon granules includes: 1) heating straws to 450-500°C for 3-4 h; cooling the straws to 20-25°C; and crushing the straws and screening through a sieve of 150-200 meshes to obtain powder; 2) adding sodium ferrate and water; stirring the mixture for 15-20 h; and drying the mixture in an environment of 50-60°C for 12-20 h to obtain a mixture; 3) heating the mixture at 800-850°C for 3-3.5 h; then heating the mixture at 900-1000°C for 1-1.5 h; and drying the mixture for 18-22 h to obtain the carbon granules. Optionally, a mass ratio of the microbial agent to the carbon granules is (3-5):(70-80). The present invention has beneficial effects as follows: the carbon granules achieve physical absorption effects on the organic pollutants; meanwhile, by improving the preparation process, a carrier protection effect on the microbial agent is enhanced; pore size distribution of the carbon granules is increased; a microbial adaptation environment is facilitated; and a repair effect and duration are further increased. Moreover, the straws are wide in sources, low in cost and easily available; and the preparation cost of the carbon granules can be reduced. Optionally, a mass ratio of the polyurethane to the polyvinyl alcohol to the water is (5-10):(10-15):(70-80). The present invention has beneficial effects as follows: by adding the polyurethane and the polyvinyl alcohol, mechanical property and mechanical strength of the carbon granules are improved. Optionally, the cross-linking agent in step (4) is glyoxylic acid having a concentration of 30-50 g/L; and reaction time is 10-15 h.
Description
Optionally, in step (4), a volume ratio of the material A to the material B to the cross-linking agent is (10-15):(2-4):(0.5-1). The present invention further provides an application of the biodegradable carbon granules in environmental protection and control. Optionally, a pH value of to-be-treated pollutants is regulated to be 6-8; then the biodegradable carbon granules are added; and the pollutants are degraded at a rate of 30-50 r/min for 24-120 h. Optionally, the pollutants include soil polluted by organic matters, domestic sewage and farmland with outbreak of soil-borne diseases. The present invention has beneficial effects as follows: microbial colonization is facilitated by regulating the pH value; and the degradation effect is further enhanced. Through the above technical solutions, compared with the prior art, the present invention discloses the preparation method and the application of the biodegradable carbon granules. Compared with the prior art, the present invention obtains the carrier material with excellent performance by improving the preparation process of the carbon granules; and after the material is combined with the microbial agent, adaptive capacity of microbial floras in organic pollutants is increased; and degradation efficiency is increased. Meanwhile, degradation maintenance time is increased, which is favorable for reducing the pollution control cost.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and fully described below. Apparently, the described embodiments are merely part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other
Description
embodiments obtained by those ordinary skilled in the art without contributing creative labor will belong to the protection scope of the present invention. Embodiments of the present invention disclose a preparation method and an application of biodegradable carbon granules. Microbial raw materials in the embodiments are commercially available. Straws are common agricultural wastes and are wide in sources. Process equipment refers to common production equipment, such as a tube furnace for heating. Unnecessary details are not given herein. Embodiment 1 A preparation method of biodegradable carbon granules includes the following steps: (1) a microbial agent was prepared; (2) the microbial agent was mixed with carbon granules to obtain a material A; (3) water was added into polyurethane and polyvinyl alcohol to obtain a material B; (4) the materials A and B were uniformly mixed; a cross-linking agent was added into the mixture to react; and the product was dried to obtain a biodegradable carbon granule. The microbial agent includes the following components in parts by mass: 10 parts of thermophilc anaerobes, 10 parts of Bacillus mucilaginosus, 5 parts of Bacillus subtilis, 10 parts of Trichoderma, 5 parts of pseudomonas fluorescens and 100 parts of humic acid. To further optimize the technical solutions, a preparation method of the microbial agent in step (1) includes: various strains were activated; and the activated strains were mixed according to a ratio to obtain the microbial agent. To further optimize the technical solutions, a preparation method of the carbon granules in step (2) includes:
Description
1) straws were heated to 450°C for 3 h; the straws were cooled to 25°C; and the straws were crushed and screened through a sieve of 150 meshes to obtain powder; 2) sodium ferrate and water were added; the mixture was stirred for 15 h; and the mixture was dried in an environment of 50°C for 12 h to obtain a mixture; 3) the mixture was heated at 800°C for 3 h; then the mixture was heated at 900°C for 1 h; and the mixture was dried for 18 h to obtain the carbon granules. To further optimize the technical solutions, a mass ratio of the microbial agent to the carbon granules in step (2) is 3:70. To further optimize the technical solutions, a mass ratio of the polyurethane to the polyvinyl alcohol to the water in step (3) is 5:10:71. To further optimize the technical solutions, the cross-linking agent in step (4) is glyoxylic acid having a concentration of 30 g/L; and reaction time is 10 h. To further optimize the technical solutions, a volume ratio of the material A to the material B to the cross-linking agent in step (4) is 10:2:0.5. Embodiment 2 A preparation method of biodegradable carbon granules includes the following steps: (1) a microbial agent was prepared; (2) the microbial agent was mixed with carbon granules to obtain a material A; (3) water was added into polyurethane and polyvinyl alcohol to obtain a material B; (4) the materials A and B were uniformly mixed; a cross-linking agent was added into the mixture to react; and the product was dried to obtain a biodegradable carbon granule. The microbial agent includes the following components in parts by mass: 13 parts of thermophilc anaerobes, 12 parts of Bacillus mucilaginosus, 7 parts of
Description
Bacillus subtilis, 8 parts of Trichoderma, 8 parts of pseudomonas fluorescens and parts of humic acid. To further optimize the technical solutions, a preparation method of the microbial agent in step (1) includes: various strains were activated; and the activated strains were mixed according to a ratio to obtain the microbial agent. To further optimize the technical solutions, a preparation method of the carbon granules in step (2) includes: 1) straws were heated to 480°C for 3.5 h; the straws were cooled to 23°C; and the straws were crushed and screened through a sieve of 180 meshes to obtain powder; 2) sodium ferrate and water were added; the mixture was stirred for 18 h; and the mixture was dried in an environment of 55°C for 16 h to obtain a mixture; 3) the mixture was heated at 830°C for 3.5 h; then the mixture was heated at 950°C for 1 h; and the mixture was dried for 20 h to obtain the carbon granules. To further optimize the technical solutions, a mass ratio of the microbial agent to the carbon granules in step (2) is 4:75. To further optimize the technical solutions, a mass ratio of the polyurethane to the polyvinyl alcohol to the water in step (3) is 7:11:75. To further optimize the technical solutions, the cross-linking agent in step (4) is glyoxylic acid having a concentration of 40 g/L; and reaction time is 12 h. To further optimize the technical solutions, a volume ratio of the material A to the material B to the cross-linking agent in step (4) is 13:3:0.75. Embodiment 3 A preparation method of biodegradable carbon granules includes the following steps: (1) a microbial agent was prepared; (2) the microbial agent was mixed with carbon granules to obtain a material A;
'7
Description
(3) water was added into polyurethane and polyvinyl alcohol to obtain a material B; (4) the materials A and B were uniformly mixed; a cross-linking agent was added into the mixture to react; and the product was dried to obtain a biodegradable carbon granule. The microbial agent includes the following components in parts by mass: 15 parts of thermophilc anaerobes, 15 parts of Bacillus mucilaginosus, 5 parts of Bacillus subtilis, 5 parts of Trichoderma, 10 parts of pseudomonas fluorescens and parts of humic acid. To further optimize the technical solutions, a preparation method of the microbial agent in step (1) includes: various strains were activated; and the activated strains were mixed according to a ratio to obtain the microbial agent. To further optimize the technical solutions, a preparation method of the carbon granules in step (2) includes: 1) straws were heated to 500°C for 4 h; the straws were cooled to 25°C; and the straws were crushed and screened through a sieve of 200 meshes to obtain powder; 2) sodium ferrate and water were added; the mixture was stirred for 20 h; and the mixture was dried in an environment of 60°C for 20 h to obtain a mixture; 3) the mixture was heated at 850°C for 3.5 h; then the mixture was heated at 1000°C for 1.5 h; and the mixture was dried for 22 h to obtain the carbon granules. To further optimize the technical solutions, a mass ratio of the microbial agent to the carbon granules in step (2) is 5:79. To further optimize the technical solutions, a mass ratio of the polyurethane to the polyvinyl alcohol to the water in step (3) is 10:15:71. To further optimize the technical solutions, the cross-linking agent in step (4) is glyoxylic acid having a concentration of 50 g/L; and reaction time is 15 h.
Description
To further optimize the technical solutions, a volume ratio of the material A to the material B to the cross-linking agent in step (4) is 15:2:1. Embodiment 4 Treatment of pollutants: A pH value of to-be-treated pollutants was regulated to be 6-8; then the biodegradable carbon granules were added; and the pollutants were degraded at a rate of 30-50 r/min for 24-120 h. Embodiment 5 Inhibitory effects on soil-borne diseases: Biodegradable carbon granules were uniformly applied to soil at a dose of 300-500 kg per mu, and matched with conventional compound fertilizers and irrigated. Experimental effects: Soil polluted by an organic pollutant, that is, 2, 4-dichlorophenol, was degraded with the biodegradable carbon granules prepared in embodiment 2; degradation steps were the same as those in embodiment 4; and within 24 h after degradation, a degradation rate was up to 98.8%-100%. Domestic sewage was degraded with the biodegradable carbon granules prepared in embodiment 2; and within 120 h after degradation, contents of ammonia and nitrogen in the sewage were respectively decreased by 25-27% and 22-31%. A plot with outbreak of botrytis cinerea was treated with the biodegradable carbon granules prepared in embodiment 2 according to the method in embodiment 5. The results show that, an effect of keeping a full stand of seedlings may be significantly increased; and compared with that in blank control, the number of seedlings suffered from botrytis cinerea is decreased by 67-74% (without applying the biodegradable carbon granules prepared in the present invention).
Description
The biodegradable carbon granules provided by the present invention can achieve effects of degrading and inhibiting the organic pollutants and the common soil-borne pathogenic bacteria. Contrast experiments In reference example 1, the microbial agent in embodiment 2 was directly applied to the domestic sewage. In reference example 2, the carbon granules in embodiment 2 were replaced with commercially available activated carbon powder; and then the prepared biodegradable activated carbon granules were applied to the domestic sewage. The domestic sewage was treated in references 1 and 2 and embodiment 2; and total N content was detected after 72 h, wherein the total N content was 21 mg/L in embodiment 2, 63 mg/L in reference example 1 and 34 mg/L in reference 2. The results show that, the microbial agent has a relatively poor effect when directly applied to sewage treatment; while due to poor particle size distribution, the commercially available carbon granules affect degradation abilities of the microbes. Each embodiment in the description is described in a progressive way. The difference of each embodiment from each other is the focus of explanation. The same and similar parts among all of the embodiments can be referred to each other. The above description of the disclosed embodiments enables those skilled in the art to realize or use the present invention. Many modifications to these embodiments will be apparent to those skilled in the art. The general principle defined herein can be realized in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principle and novel features disclosed herein.
1 )
Claims (9)
1. A preparation method of biodegradable carbon granules, comprising the following steps: (1) preparing a microbial agent; (2) mixing the microbial agent with carbon granules to obtain a material A; (3) adding water into polyurethane and polyvinyl alcohol to obtain a material B; (4) uniformly mixing the materials A and B; adding a cross-linking agent into the mixture to react; and drying the product to obtain a biodegradable carbon granule, wherein the microbial agent comprises the following components in parts by mass: 10-15 parts of thermophilc anaerobes, 10-15 parts of Bacillus mucilaginosus, -10 parts of Bacillus subtilis, 5-10 parts of Trichoderma, 5-10 parts of pseudomonas fluorescens and 50-100 parts of humic acid.
2. The preparation method of biodegradable carbon granules according to claim 1, wherein a preparation method of the microbial agent in step (1) comprises: activating various strains; and mixing the activated strains according to a ratio to obtain the microbial agent.
3. The preparation method of biodegradable carbon granules according to claim 1, wherein a preparation method of the carbon granules in step (2) comprises: 1) heating straws to 450-500°C for 3-4 h; cooling the straws to 20-25°C; and crushing the straws and screening through a sieve of 150-200 meshes to obtain powder; 2) adding sodium ferrate and water; stirring the mixture for 15-20 h; and drying the mixture in an environment of 50-60 0C for 12-20 h to obtain a mixture; 3) heating the mixture at 800-850 0C for 3-3.5 h; then heating the mixture at 900-1000C for 1-1.5 h; and drying the mixture for 18-22 h to obtain the carbon granules.
Claims
4. The preparation method of biodegradable carbon granules according to claim 1, wherein a mass ratio of the microbial agent to the carbon granules in step (2) is (3-5):(70-80).
5. The preparation method of biodegradable carbon granules according to claim 1, wherein a mass ratio of the polyurethane to the polyvinyl alcohol to the water in step (3) is (5-10):(10-15):(70-80).
6. The preparation method of biodegradable carbon granules according to claim 1, wherein the cross-linking agent in step (4) is glyoxylic acid having a concentration of 30-50 g/L; and reaction time is 10-15 h.
7. The preparation method of biodegradable carbon granules according to claim 1, wherein in step (4), a volume ratio of the material A to the material B to the cross-linking agent is (10-15):(2-4):(0.5-1).
8. An application of the biodegradable carbon granules in environmental protection and control.
9. The application according to claim 8, wherein a pH value of to-be-treated pollutants is regulated to be 6-8; then the biodegradable carbon granules are added; and the pollutants are degraded at a rate of 30-50 r/min for 24-120 h.
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| CN202110514395.7A CN113214840A (en) | 2021-05-12 | 2021-05-12 | Preparation method and application of biodegradable carbon particles |
| CN202110514395.7 | 2021-05-12 |
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| CN103789296A (en) * | 2014-01-13 | 2014-05-14 | 华东理工大学 | Immobilized microorganism spherule for repairing field and preparation method thereof |
| CN104208841A (en) * | 2014-08-25 | 2014-12-17 | 徐州工程学院 | Method for degrading organophosphorus pesticide in soil by immobilized engineering bacteria |
| CN104789226B (en) * | 2015-03-13 | 2018-04-24 | 迪斯科科技集团（宜昌）有限公司 | Charcoal base microbe soil conditioner and preparation method thereof |
| CN107759322A (en) * | 2017-10-31 | 2018-03-06 | 浙江省农业科学院 | A kind of charcoal base microbe composite fertilizer and preparation method thereof |
| CN109292883B (en) * | 2018-10-23 | 2021-07-13 | 湖南大学 | Graphitized biochar and method for degrading organic pollutants in water body by graphitized biochar |
| CN109536173B (en) * | 2018-12-04 | 2020-11-13 | 苏州科技大学 | Composite material for simultaneously repairing heavy metal and glyphosate and preparation method thereof |
| CN109749750A (en) * | 2018-12-27 | 2019-05-14 | 天津天丰泽田生物科技有限公司 | A kind of heavy metal pollution of soil renovation agent and preparation method thereof |
| CN109851450A (en) * | 2019-01-30 | 2019-06-07 | 叶荫人 | A kind of microbial degradation method of coal waste and application |
| CN110330082A (en) * | 2019-07-12 | 2019-10-15 | 北京师范大学 | A kind of room temperature preparation method and applications of iron carbon particle |
| CN110577442A (en) * | 2019-10-08 | 2019-12-17 | 吉林省汇泉农业科技有限公司 | carbon-based soil environment restoration agent and preparation method thereof |
| CN111440786A (en) * | 2020-03-31 | 2020-07-24 | 青岛农业大学 | Method for removing soil 2,4, 6-trichlorophenol by biomass charcoal immobilized high-efficiency degrading strain |
| CN111909925A (en) * | 2020-08-13 | 2020-11-10 | 青岛农业大学 | Method for removing soil 2,4, 6-trichlorophenol by porous biomass charcoal immobilized degrading strain |
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