CN117903809A - Microelement-based gangue soil restoration agent and preparation method thereof - Google Patents
Microelement-based gangue soil restoration agent and preparation method thereof Download PDFInfo
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- CN117903809A CN117903809A CN202311757680.7A CN202311757680A CN117903809A CN 117903809 A CN117903809 A CN 117903809A CN 202311757680 A CN202311757680 A CN 202311757680A CN 117903809 A CN117903809 A CN 117903809A
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- Prior art keywords
- soil
- gangue
- agent
- strain
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- 239000002689 soil Substances 0.000 title claims abstract description 146
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
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- 229920002678 cellulose Polymers 0.000 claims abstract description 51
- 239000003245 coal Substances 0.000 claims abstract description 49
- 239000004088 foaming agent Substances 0.000 claims abstract description 45
- 238000003756 stirring Methods 0.000 claims abstract description 43
- 239000002131 composite material Substances 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims abstract description 36
- 229920002472 Starch Polymers 0.000 claims abstract description 31
- 239000008107 starch Substances 0.000 claims abstract description 31
- 235000019698 starch Nutrition 0.000 claims abstract description 31
- 239000004964 aerogel Substances 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 230000009286 beneficial effect Effects 0.000 claims abstract description 20
- 238000005067 remediation Methods 0.000 claims abstract description 18
- 241000894006 Bacteria Species 0.000 claims abstract description 14
- 238000000855 fermentation Methods 0.000 claims abstract description 14
- 230000004151 fermentation Effects 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000004108 freeze drying Methods 0.000 claims abstract description 12
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 10
- 239000010455 vermiculite Substances 0.000 claims abstract description 10
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 10
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 9
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- 239000000017 hydrogel Substances 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000008367 deionised water Substances 0.000 claims description 23
- 229910021641 deionized water Inorganic materials 0.000 claims description 23
- 239000011573 trace mineral Substances 0.000 claims description 22
- 235000013619 trace mineral Nutrition 0.000 claims description 22
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims description 15
- 229960001149 dopamine hydrochloride Drugs 0.000 claims description 14
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
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- 238000005406 washing Methods 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
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- 229920002101 Chitin Polymers 0.000 claims description 6
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- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 6
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- 238000000034 method Methods 0.000 claims description 6
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 6
- 239000007983 Tris buffer Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002639 bone cement Substances 0.000 claims description 5
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- 238000001816 cooling Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 241000589151 Azotobacter Species 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 3
- 229920002261 Corn starch Polymers 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 239000008120 corn starch Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 241000588914 Enterobacter Species 0.000 claims description 2
- 241000588722 Escherichia Species 0.000 claims description 2
- 241000186660 Lactobacillus Species 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 241000589180 Rhizobium Species 0.000 claims description 2
- 241000235342 Saccharomycetes Species 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 241000607598 Vibrio Species 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229940039696 lactobacillus Drugs 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
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- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims 2
- 241000186361 Actinobacteria <class> Species 0.000 claims 1
- 241000209149 Zea Species 0.000 claims 1
- 239000011261 inert gas Substances 0.000 claims 1
- 238000010298 pulverizing process Methods 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 abstract description 18
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 14
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- 230000035558 fertility Effects 0.000 abstract description 6
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 230000008635 plant growth Effects 0.000 description 6
- 230000001737 promoting effect Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
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- 238000010521 absorption reaction Methods 0.000 description 4
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- 230000001965 increasing effect Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000193401 Clostridium acetobutylicum Species 0.000 description 2
- 208000035240 Disease Resistance Diseases 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical group OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
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- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
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- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 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 description 1
- 241000186046 Actinomyces Species 0.000 description 1
- 241000187844 Actinoplanes Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 241000193468 Clostridium perfringens Species 0.000 description 1
- 241000193452 Clostridium tyrobutyricum Species 0.000 description 1
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- 241000588720 Escherichia fergusonii Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
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- 244000052616 bacterial pathogen Species 0.000 description 1
- HNYOPLTXPVRDBG-UHFFFAOYSA-N barbituric acid Chemical compound O=C1CC(=O)NC(=O)N1 HNYOPLTXPVRDBG-UHFFFAOYSA-N 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000004792 oxidative damage Effects 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000010496 root system development Effects 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 230000007226 seed germination Effects 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002688 soil aggregate Substances 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- 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
-
- 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
- C09K2101/00—Agricultural use
-
- 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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Pest Control & Pesticides (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a microelement-based gangue soil restoration agent and a preparation method thereof, belonging to the technical field of soil restoration agents, and comprising the following steps: mixing the dark fermentation strain with soil beneficial bacteria to obtain a composite strain, coating the composite strain with starch, and mixing with a bio-based foaming agent to obtain a composite foaming agent; mixing modified cellulose, a composite foaming agent, coal gangue powder and a gel agent to obtain hydrogel, and freeze-drying to obtain the loaded coal gangue particle aerogel; mixing the coal gangue particle aerogel and microelements, adding turfy soil, lignite, vermiculite and corn straw, stirring, drying and packaging to obtain the soil remediation agent. The strain encapsulated by the starch in the composite foaming agent has better stability, and can be better propagated and developed in soil; the encapsulated hydrogen-producing strain can better complete the dark fermentation reaction, increase the biological hydrogen content in the soil and restore the soil fertility.
Description
Technical Field
The invention belongs to the technical field of soil restoration agents, and particularly relates to a microelement-based gangue soil restoration agent and a preparation method thereof.
Background
Soil remediation is a substance used to improve soil quality and solve soil pollution problems. These remediation agents can reduce the amount of contaminants in the soil, increase soil fertility, improve soil structure, and thereby increase plant growth and yield through a variety of mechanisms. The silicate repairing agent such as sodium silicate and calcium silicate can increase the structural stability of soil, improve the soil loading capacity, have a certain effect on repairing contaminated soil, and the microbial repairing agent such as degrading bacteria and antibiotic bacteria can decompose pollutants, reduce toxicity of the pollutants, promote soil repair, form a symbiotic relationship with other microorganisms in the soil, increase the biological diversity of the soil, have the effect of improving the soil structure, solve the problem of soil hardening and improve the microecological environment of the soil.
Although the soil remediation agent has the effects of improving the quality of soil and improving the growth and yield of plants, the soil remediation agent has defects that some soil remediation agents can change the physicochemical characteristics of soil, such as the influence on the air permeability, water holding capacity and water conductivity of the soil, and have side effects on the physical environment of the soil; secondly, when some repairing agents are added, the volume weight and the density of the soil can be changed to different degrees, so that the change of the water holding capacity of the soil is caused, the porosity and the air permeability of a capillary of the soil can be reduced, and the water storage capacity of the soil is reduced; furthermore, if the restorative agent is improperly used or excessively used, adverse effects on the environment and humans and animals may result. For example, some remediation agents may adversely affect plants, beneficial microorganisms in the soil, and the environment.
Disclosure of Invention
The invention aims to provide a trace element-based gangue soil remediation agent and a preparation method thereof: the starch-coated strain is mixed with the bio-based foaming agent, so that the starch-coated strain has better stability and can be better propagated and developed in soil; the dopamine hydrochloride is adopted to modify cellulose, so that metal ion coordination bonds can be formed with metal oxides in the coal gangue, and trace elements in the coal gangue can be uniformly distributed in a soil restoration agent system; the modified cellulose, the composite foaming agent, the coal gangue powder and the gel are mixed to form the loaded coal gangue particle aerogel, and the components such as alumina and silicon dioxide in the coal gangue can promote the crosslinking degree of the cellulose gel, so that the aerogel prepared from the cellulose gel has better stability and is more beneficial to the complete preservation of the soil restoration agent; mixing, stirring, drying and packaging the coal gangue particle aerogel and trace elements to obtain the soil restoration agent, wherein the soil restoration agent not only has good soil restoration performance, but also can be better dispersed in a soil system to play a restoration role.
The invention aims to provide a preparation method of a microelement-based gangue soil restoration agent, which aims to solve the problems in the background technology.
The aim of the invention can be achieved by the following technical scheme:
a preparation method of a microelement-based gangue soil restoration agent comprises the following steps:
S1, washing coal gangue with deionized water, and grinding into powder to obtain coal gangue powder;
The method comprises the steps of washing coal gangue powder by using deionized water to remove ions and minerals in the coal gangue powder, so as to obtain pure coal gangue powder, promote the growth and development of plants, and improve the yield and quality of crops; the coal gangue powder has uniform particle size distribution by grinding, improves the contact area of the coal gangue and soil, increases the porosity of the soil, improves the air permeability and drainage performance of the soil, and is beneficial to the growth and development of plants.
S2, mixing the dark fermentation strain with soil beneficial bacteria to obtain a composite strain, coating the composite strain with starch, and mixing the composite strain with a bio-based foaming agent to obtain a composite foaming agent; the preparation method comprises the following steps:
A1. Adding 8.5g of corn starch into 80mL of deionized water, stirring at 80 ℃ for 3min until the starch is completely gelatinized, cooling to room temperature, adding dark fermentation strain and soil beneficial bacteria, stirring at 600rpm for 3min to enable the strain to be in full contact with the starch, and drying overnight in a dark environment to obtain a strain coated with the starch;
The hydroxyl in the starch can be combined with the oxygen-containing functional group of clostridium strain through hydrogen bond, and the starch has better adsorptivity and film forming property, so that the strain can be effectively wrapped to form a layer of protective film, thereby protecting the strain from the influence of external environment, the starch can also provide a certain nutrient substance, promote the growth and propagation of microorganisms, improve the stress resistance and disease resistance of plants, and promote the growth and development of plants.
Further, the dark fermentation strain is at least one of clostridium, vibrio desulphurizing, enterobacter and escherichia.
Further, the clostridium is formed by mixing clostridium butyricum, clostridium acetobutylicum, clostridium butyricum and clostridium baronii according to the dosage ratio of (0.1-0.3): (0.2-0.4): (0.3-0.4): (0.4-0.6): (0.1-0.2).
Further, the soil beneficial bacteria are at least one of azotobacter, rhizobium, actinomyces, lactobacillus, saccharomycetes and mould.
Further, the dosage ratio of the dark fermentation strain to the soil beneficial bacteria is (1.3-1.7) g (1.5-1.7).
A2. 5g of rosin, 2g of natural cellulose, 2.5g of chitin and 1.5g of gelatin are prepared, washed by deionized water, dried, placed in a grinder and crushed into particles, 6.5g of sodium hydroxide is added into 20mL of deionized water, the temperature is raised to 75 ℃, 2.5g of particles are added, placed in a water bath kettle with the temperature of 100 ℃, stirred for 2 hours, the volume of the reaction system is added with the deionized water to be 20mL, cooled to 45 ℃, 1.25g of bone glue is added, stirred until small bubbles exist on the surface, and then the bio-based foaming agent is obtained, and 0.7g of starch-coated strain is mixed with 8g of bio-based foaming agent, thus obtaining the composite foaming agent.
In the mixing process, the hydroxyl groups of the starch on the surface of the strain coated with the starch are combined with hydrogen bonds in the molecules of the foaming agent to form a compound, the compound foaming agent can release hydrogen gas to play a role in foaming when being stimulated by high temperature or other stimuli, and the compound foaming agent also has better biodegradability and is environment-friendly due to the existence of the starch.
Further, the dosage ratio of rosin, natural cellulose, chitin and gelatin is (4-6): (1-3): (2-3): (1-2).
Further, the dosage ratio of sodium hydroxide, deionized water and particles is (6-7) g (10-30) mL (2-3) g.
Further, the dosage ratio of the starch-coated strain to the bio-based foaming agent is (0.5-0.9) g (7-9);
S3, modifying cellulose by using dopamine hydrochloride to obtain modified cellulose, mixing the modified cellulose, a composite foaming agent, coal gangue powder and epichlorohydrin to obtain hydrogel, and freeze-drying to obtain the loaded coal gangue particle aerogel;
Further, the modified cellulose is specifically: adding 6.5g of cellulose and 2g of dopamine hydrochloride into 50mL of Tris buffer with pH of 8, uniformly stirring, introducing argon, stirring for 12 hours at 50 ℃, and freeze-drying the obtained solution in a freeze dryer to obtain modified cellulose;
The hydroxyl contained on the surface of the cellulose can react with the amino in the dopamine hydrochloride, so that the dopamine hydrochloride is grafted on the surface of the cellulose, catechol functional groups are provided, and the gangue powder and the composite foaming agent can be uniformly dispersed in a cellulose gel system through metal ion coordination bond and hydrogen bond interaction.
Further, the dosage ratio of the cellulose, the dopamine hydrochloride and the Tris buffer is (6-7) g (1-3) g (1-2) mL.
Further, the coal gangue particle loaded aerogel is specifically prepared by the following steps: adding 0.8g of modified cellulose and 0.5g of sodium hydroxide into 80mL of ethanol, carrying out ultrasonic treatment at 30 ℃ for 5min to obtain a modified cellulose solution, adding 1.2g of epichlorohydrin, 1.6g of composite foaming agent and 1.3g of coal gangue powder into the modified cellulose solution, stirring for 20min, continuing stirring to form gel, filtering, washing by deionized water, and freeze-drying at-12 ℃ to obtain the loaded coal gangue particle aerogel.
The cellulose can be combined with hydroxyl groups in the composite foaming agent through hydrogen bonds, and the formed cellulose gel has better stability under the action of the crosslinking agent epichlorohydrin, so that the soil restoration agent is more beneficial to complete preservation, catechol groups on the surface of the modified cellulose can be combined with components such as alumina and silicon dioxide in the gangue powder, the crosslinking degree of the cellulose gel can be promoted, and the gangue powder is uniformly dispersed in the cellulose gel.
Further, the mass ratio of the modified cellulose to the sodium hydroxide to the epichlorohydrin to the composite foaming agent to the coal gangue powder is (0.7-0.9) g (0.3-0.7) g (1.1-1.3) g (1.4-1.8) g (1.2-1.4) g.
S4, mixing the coal gangue particle aerogel and microelements, adding turfy soil, lignite, vermiculite and corn straw, stirring, drying and packaging to obtain the soil remediation agent.
Further, the trace elements are selected from boron, zinc, iron, molybdenum, copper, manganese or titanium.
Further, the stirring speed is 700-900rpm, and the stirring time is 20-30min.
Further preferably, the stirring rate is 800rpm and the stirring time is 25 minutes.
The invention has the beneficial effects that:
In the technical scheme of the invention, turfy soil, lignite, coal gangue, vermiculite and corn straw are used as basic components of the soil remediation agent. The turfy soil is a natural material rich in organic matters, and has good water retention and air permeability. It also contains a large number of microorganisms and beneficial bacteria which promote the decomposition of organic matter, the decomposition of enzymes and the growth of microorganisms in the soil, thereby promoting the growth of plants and increasing crop yield. Lignite contains humic acid and other organic substances, and the substances can be used as a supplement of soil organic substances to increase the fertility of soil, and can neutralize the pH value of the soil and adjust the structure and air permeability of the soil, so that the growth of plants is facilitated. Vermiculite is a silicate mineral with good water retention and air permeability, so that the vermiculite can be used as a soil conditioner. It can improve soil structure, increase soil air permeability and water retention property, promote plant root system development, and enhance plant stress resistance, thereby being beneficial to plant growth. The corn stalk can increase organic matters of soil and microelements such as nitrogen, phosphorus, potassium and the like, can improve soil aggregate structure, and can increase the porosity of the soil and the water and fertilizer retaining capacity, thereby being beneficial to the growth of plants. The microbial agent which is matched with gangue powder and modified cellulose loaded strains and is used for promoting soil restoration capacity for a long time can be used for keeping soil fertility for a long time through the activity of microorganisms in soil, and the soil is prevented from being hardened again or losing fertility under the influence of chemical fertilizers. In addition, as microorganisms in the soil slowly decompose the system, the coal gangue slowly flows into the soil, active groups such as carboxyl, hydroxyl and the like on the surface of the coal gangue can react with mineral substances in the soil, so that the air permeability and the water retention property are improved, and the hardening of the soil is prevented. And the pH value in the soil can be neutralized to adjust the pH value of the soil, so that the effect of long-acting recovery is achieved.
The cellulose is modified by using dopamine hydrochloride to prepare modified cellulose gel, and an amide bond is formed by amino groups on the dopamine hydrochloride and carboxyl groups on the cellulose, so that the strain and gangue components have uniform distribution effect in the system. The coal gangue powder has uniform particle size distribution by grinding, the contact area of the coal gangue and soil is improved, the porosity of the soil is increased, the air permeability and the drainage performance of the soil are improved, and the modified cellulose can interact with hydroxyl contained on the surface of the coal gangue component through hydrogen bonds to form metal ion coordination bonds with metal oxides in the coal gangue, so that the metal ions are uniformly dispersed, and a better restoration promoting effect is achieved in the soil.
The foaming system mixed by the bio-based foaming agent and the composite strain is added into the gel system, and the foaming system can enable the gel to form a rich system after the subsequent freeze drying process, so that the soil restoration agent has a better effect of preventing soil hardening, and the strain and the coal gangue can enter the soil better to exert the effects of the soil restoration agent. The strain is encapsulated by starch, and the starch-encapsulated strain has better stability and can be better propagated and developed in soil. Wherein, the encapsulated hydrogen-producing strain can better complete dark fermentation reaction in an encapsulation environment, increase the biological hydrogen content in soil, and recover the soil fertility under the condition of no organic fertilizer.
The soil restoration agent contains a plurality of compound microorganisms, including a hydrogen-producing strain and plant growth beneficial bacteria which are carried by starch and are produced by dark fermentation, and soil strains existing in turfy soil. The bacteria capable of producing hydrogen by dark fermentation are microorganisms capable of growing and reproducing in an anoxic environment, and can utilize organic substances as energy to produce hydrogen and carbon dioxide for plant utilization and promote the growth and development of plants. The hydrogen obtained by the hydrogen-producing strain can increase the content of biological hydrogen in soil, help promote seed germination, improve germination rate, promote seedling growth and improve plant biomass. Meanwhile, the biological hydrogen can also improve photosynthesis and respiration of plants, and improve stress resistance of the plants, such as cold resistance, drought resistance, salt resistance and the like; can inhibit the growth and propagation of pathogenic bacteria, improve the activity of antioxidant enzyme in plants, remove active oxygen free radicals, protect plant cells from oxidative damage, reduce the occurrence and spread of plant diseases, and improve the disease resistance of plants. In addition, the biological hydrogen can form a complex with metal ions to promote the absorption and utilization of metal ions such as iron, copper, zinc and the like by plants, and can promote the absorption and utilization of nutrient elements such as nitrogen, phosphorus and the like by plants by adjusting oxidation-reduction balance in plants.
In a separate hydrogen production system, organic acid secreted by the dark fermentation strain can damage the acid-base property in the soil, thereby adversely affecting the soil environment. In the soil restoration agent system, the metal oxide contained in the gangue in the composite foaming agent can react with the organic acid in the bacterial secretion to form metal salt, so that the metal salt is fixed in soil, and compared with the metal oxide, the metal salt can be better utilized by plants, and the organic acid can be effectively prevented from flowing into the soil by loading aerogel particles and starch.
Under the action of the strain in the soil restoration agent, the plant has higher absorption capacity of trace elements, so that antagonism among the trace elements in the soil is more obvious, and trace elements such as sulfur, iron, zinc and the like contained in the coal gangue can inhibit absorption of trace elements such as manganese, copper and the like by the plant, so that relative copper deficiency or manganese deficiency and other symptoms are caused, therefore, the dosage of the trace elements is additionally regulated in the formula, and the best restoration promoting effect is achieved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples and comparative examples, the reagents used were analytical grade. Wherein the dopamine hydrochloride is provided by Shanghai Ala Biochemical technology Co., ltd, and the CAS number is CAS number 62-31-7.
The component contents of the gangue used in the examples of the present invention are shown in table 1:
TABLE 1
| Component (A) | SiO2 | Al2O3 | Fe2O3 | CaO | K2O | MgO | Na2O |
| Content of | 51.3 | 19.2 | 3.02 | 2.38 | 1.51 | 0.43 | 0.49 |
Example 1
The composite foaming agent is prepared by the following steps:
A1. Adding 8.5g of corn starch into 80mL of deionized water, stirring at 80 ℃ for 3min until the starch is completely gelatinized, cooling to room temperature, adding 1.5X10 9 CFU of clostridium secretum and 1.6X10 9 CFU of soil beneficial bacteria azotobacter CICC 20837, stirring at 600rpm for 3min to enable the strain to be fully contacted with the starch, and drying overnight in a light-proof environment to obtain a strain coated with the starch, wherein the clostridium secretum is prepared by mixing clostridium butyricum, clostridium acetobutylicum, clostridium tyrobutyricum and clostridium barbituric according to the dosage ratio of 0.2X10 9CFU:0.3×109CFU:0.35×109CFU:0.5×109CFU:0.15×109 CFU;
A2. 5g of rosin, 2g of natural cellulose, 2.5g of chitin and 1.5g of gelatin are prepared, washed by deionized water, dried, placed in a grinder, crushed into particles, 6.5g of sodium hydroxide is added into 20mL of deionized water, the temperature is raised to 75 ℃, 2.5g of particles are added, placed in a water bath kettle with the temperature of 100 ℃, stirred for 2 hours, the volume of the reaction system is added with the deionized water to be 20mL, cooled to 45 ℃, 1.25g of bone glue is added, stirred until small bubbles exist on the surface, and then the bio-based foaming agent is obtained, and 0.7g of starch-coated strain is mixed with 8g of bio-based foaming agent, thus obtaining the composite foaming agent.
Example 2
The difference between this example and example 1 is that the use of Escherichia coli ESCHERICHIA FERGUSONII as the dark fermentation broth in this example; the soil beneficial bacteria are actinoplanes mizuli CICC11008.
Comparative example 1
This comparative example differs from example 1 in that no starch was added.
Preparing 5g of rosin, 2g of natural cellulose, 2.5g of chitin and 1.5g of gelatin, washing with deionized water, drying, putting into a grinder, grinding into particles, adding 6.5g of sodium hydroxide into 20mL of deionized water, heating to 75 ℃, adding 2.5g of particles, putting into a water bath kettle at 100 ℃, stirring for 2 hours, supplementing deionized water until the volume of the reaction system is 20mL, cooling to 45 ℃, adding 1.25g of bone glue, stirring until the surface has small bubbles, obtaining a bio-based foaming agent, and mixing 1.5X10 9 CFU of clostridium secretum and 1.6X10 9 CFU of soil beneficial bacteria azotobacter CICC 20837 with 8g of the bio-based foaming agent to obtain a composite foaming agent; wherein the Clostridium perfringens is prepared by mixing Clostridium butyricum, clostridium acetobutyrate, clostridium clostridium, clostridium casei and Clostridium bararyophyllum according to the dosage ratio of 0.2X10 9CFU:0.3×109CFU:0.35×109CFU:0.5×109CFU:0.15×109 CFU.
Comparative example 2
This comparative example differs from example 1 in that no starch-coated bacterial species were added.
5G of rosin, 2g of natural cellulose, 2.5g of chitin and 1.5g of gelatin are prepared, washed by deionized water, dried, placed in a grinder, crushed into particles, 6.5g of sodium hydroxide is added into 20mL of deionized water, the temperature is raised to 75 ℃, 2.5g of particles are added, placed in a water bath kettle with the temperature of 100 ℃, stirred for 2 hours, the volume of the reaction system is 20mL, cooled to 45 ℃, 1.25g of bone glue is added, and stirred until small bubbles exist on the surface, thus obtaining the composite foaming agent.
Example 3
The coal gangue particle loaded aerogel is prepared by the following steps:
B1. adding 6.5g of cellulose and 2g of dopamine hydrochloride into 50mL of Tris buffer with pH of 8, uniformly stirring, introducing argon, stirring for 12 hours at 50 ℃, and freeze-drying the obtained solution in a freeze dryer to obtain modified cellulose;
B2. Adding 0.8g of modified cellulose and 0.5g of sodium hydroxide into 80mL of ethanol, carrying out ultrasonic treatment at 30 ℃ for 5min to obtain a modified cellulose solution, adding 1.2g of epichlorohydrin, 1.6g of composite foaming agent and 1.3g of coal gangue powder into the modified cellulose solution, stirring for 20min, continuing stirring to form gel, filtering, washing by deionized water, and freeze-drying at-12 ℃ to obtain the loaded coal gangue particle aerogel.
Comparative example 3
This comparative example differs from example 3 in that the composite blowing agent was replaced with the material prepared in comparative example 1.
Comparative example 4
This comparative example differs from example 3 in that the composite blowing agent was replaced with the material prepared in comparative example 2.
Comparative example 5
This comparative example differs from example 3 in that the modified cellulose was replaced with cellulose.
Adding 0.8g of cellulose and 0.5g of sodium hydroxide into 80mL of ethanol, carrying out ultrasonic treatment at 30 ℃ for 5min to obtain a modified cellulose solution, adding 1.2g of epichlorohydrin, 1.6g of composite foaming agent and 1.3g of coal gangue powder into the modified cellulose solution, stirring for 20min, continuing stirring to form gel, filtering, washing with deionized water, and freeze-drying at-12 ℃ to obtain the loaded coal gangue particle aerogel.
Comparative example 6
This comparative example differs from example 3 in that no gangue powder was added.
Example 4
A preparation method of a microelement-based gangue soil restoration agent comprises the following steps:
30g of the coal gangue particle aerogel and 0.9g of trace element boron are added with 1.5g of turfy soil, 1g of lignite, 2g of vermiculite and 1g of corn stalk, and the mixture is stirred under the condition that the stirring speed is 800rpm and the stirring time is 25min, and the mixture is dried in a baking oven at 30 ℃ for 10min and then packaged, so that the soil restoration agent is obtained.
Example 5
A preparation method of a microelement-based gangue soil restoration agent comprises the following steps:
Mixing 35g of the coal gangue particle loaded aerogel with 1.1g of trace element zinc, adding 1.7g of turfy soil, 1.2g of lignite, 2.5g of vermiculite and 1.5g of corn straw, stirring under the condition that the stirring speed is 800rpm and the stirring time is 25min, drying in a baking oven at 30 ℃ for 10min, and packaging to obtain the soil restoration agent.
Example 6
A preparation method of a microelement-based gangue soil restoration agent comprises the following steps:
Mixing 40g of the loaded gangue particle aerogel with 1.3g of trace element iron, adding 1.9g of turfy soil, 1.4g of lignite, 3g of vermiculite and 2g of corn straw, stirring under the condition that the stirring speed is 800rpm and the stirring time is 25min, drying in a baking oven at 30 ℃ for 10min, and packaging to obtain the soil restoration agent.
Comparative example 7
This comparative example differs from example 5 in that the loaded gangue particle aerogel was replaced with the material prepared in comparative example 3.
Comparative example 8
This comparative example differs from example 5 in that the loaded gangue particle aerogel was replaced with the material prepared in comparative example 4.
Comparative example 9
This comparative example differs from example 5 in that the loaded gangue particle aerogel was replaced with the material prepared in comparative example 5.
Comparative example 10
This comparative example differs from example 5 in that the loaded gangue particle aerogel was replaced with the material prepared in comparative example 6.
The soil restoration agents prepared in examples 4 to 6 and comparative examples 7 to 10 were now tested for yield increasing effect. The rice is used as a test crop, shen Daosi seventeen varieties of rice and twenty-eight varieties of Longjing rice are respectively tested, 10m 2 test fields are respectively used for rice planting, the soil restoration agents prepared in examples 4-6 and comparative examples 7-10 are respectively applied, the soil restoration agents are harvested after 130 days, the yield is calculated, the yield increase effect of the fertilizer is judged, and the test results are shown in the following table 2:
TABLE 2
The soil restoration agents prepared in examples 4 to 6 and comparative examples 7 to 10 were now tested for yield increasing effect. Cabbage seeds are planted in the greenhouse by using potting cabbage as an example, and the cabbage seeds are planted in the existing soil and five soil sprayed with the repairing agent prepared in the example, and experimental results and comparison data are shown in the following table 3:
TABLE 3 Table 3
| Group of | Height of plant (cm) | Fresh weight (kg) |
| Example 4 | 32.5 | 2.5 |
| Example 5 | 32.8 | 2.6 |
| Example 6 | 32.2 | 2.4 |
| Comparative example 7 | 20.3 | 1.6 |
| Comparative example 8 | 26.9 | 1.9 |
| Comparative example 9 | 25.6 | 1.8 |
| Comparative example 10 | 26.3 | 2.1 |
From tables 2 and 3, it can be seen that the soil remediation agents prepared in the three examples have better yield-increasing effect than the samples in the comparative examples, and the starch-coated strain has the greatest effect on the crop yield and the bio-based foaming agent, the coal gangue powder and the composite strain have promoting effect on the crop yield from the comparison of the yields of comparative examples 7 to 10 and the plant heights and fresh weights of the cultivated cabbages.
The data in tables 2 and 3 show that the soil restoration agents prepared in examples 4-6 have good soil restoration performance, and the added auxiliary agents can be better dispersed in a soil system to play a restoration role. Coating the composite strain with starch, and mixing with a bio-based foaming agent to obtain a composite foaming agent; modifying cellulose by adopting dopamine hydrochloride to obtain modified cellulose, mixing the modified cellulose, a composite foaming agent, coal gangue powder and a gel to obtain hydrogel, and freeze-drying to obtain the loaded coal gangue particle aerogel; mixing the coal gangue particle aerogel and trace elements, adding turfy soil, lignite, vermiculite and corn straw, stirring, drying and packaging to obtain the soil restoration agent which meets the requirement of test performance, wherein the soil restoration agent prepared in comparative examples 3-5 does not meet the standard of performance requirement, which indicates that the soil restoration agent prepared in the invention has good soil restoration performance, and the added auxiliary agent can be better dispersed in a soil system to play a restoration role.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (10)
1. The preparation method of the trace element-based gangue soil restoration agent is characterized by comprising the following steps of:
S1, washing and grinding gangue into powder to obtain gangue powder;
S2, mixing the dark fermentation strain with soil beneficial bacteria to obtain a composite strain, coating the composite strain with starch, and mixing the composite strain with a bio-based foaming agent to obtain a composite foaming agent;
S3, modifying cellulose by using dopamine hydrochloride to obtain modified cellulose, mixing the modified cellulose, a composite foaming agent, coal gangue powder and epichlorohydrin to obtain hydrogel, and freeze-drying to obtain the loaded coal gangue particle aerogel;
S4, mixing the coal gangue granule aerogel and microelements, adding turfy soil, lignite, vermiculite and corn straw, stirring, drying and packaging to obtain the soil restoration agent.
2. The preparation method of the trace element-based gangue soil remediation agent as claimed in claim 1, wherein the compound foaming agent is prepared by the following steps:
A1. Adding corn starch into deionized water, stirring at 80deg.C until starch is completely gelatinized, cooling to room temperature, adding dark fermentation strain and soil beneficial bacteria, stirring, and drying overnight in dark environment to obtain starch coated strain;
A2. Preparing rosin, natural cellulose, chitin and gelatin, washing with deionized water, drying, and pulverizing in a grinder to obtain granule; adding sodium hydroxide into deionized water, heating to 75 ℃, adding particles, placing in a water bath kettle for stirring, replenishing deionized water to the volume of 20mL of the reaction system during the stirring, cooling to 45 ℃, adding bone glue, stirring to obtain a bio-based foaming agent, and mixing the starch-coated strain with the bio-based foaming agent to obtain the composite foaming agent.
3. The method for preparing the microelement-based gangue soil remediation agent according to claim 2, wherein the dark fermentation strain is at least one of clostridium, vibrio desulphurized, enterobacter and escherichia.
4. The method for preparing the trace element-based gangue soil restoration agent according to claim 2, wherein the soil beneficial bacteria are at least one of azotobacter, rhizobium, actinomycetes, lactobacillus, saccharomycetes and mould.
5. The preparation method of the trace element-based gangue soil remediation agent as claimed in claim 1, wherein the loaded gangue particle aerogel is prepared by the following steps:
B1. adding cellulose and dopamine hydrochloride into Tris buffer solution, uniformly stirring, introducing inert gas, stirring at 50 ℃, and freeze-drying the obtained solution in a freeze dryer to obtain modified cellulose;
B2. Adding modified cellulose and sodium hydroxide into ethanol, performing ultrasonic treatment to obtain modified cellulose solution, adding epichlorohydrin, a composite foaming agent and coal gangue powder into the modified cellulose solution, continuously stirring to form gel, filtering, washing and freeze-drying to obtain the loaded coal gangue particle aerogel.
6. The preparation method of the trace element-based coal gangue soil restoration agent as claimed in claim 5, wherein in the step B1, the dosage ratio of the cellulose, the dopamine hydrochloride and the Tris buffer solution is (6-7) g (1-3) g (1-2) mL.
7. The preparation method of the trace element-based gangue soil restoration agent according to claim 5, wherein in the step B2, the mass ratio of the modified cellulose to the sodium hydroxide to the epichlorohydrin to the composite foaming agent to the gangue powder is (0.7-0.9) g (0.3-0.7) g (1.1-1.3) g (1.4-1.8) g (1.2-1.4) g.
8. The method for preparing the microelement-based gangue soil remediation agent according to claim 1, wherein the microelement is selected from boron, zinc, iron, molybdenum, copper, manganese or titanium.
9. The preparation method of the trace element-based gangue soil remediation agent according to claim 1, wherein the stirring speed is 700-900rpm, and the stirring time is 20-30min.
10. A trace element-based gangue soil remediation agent, which is characterized by being prepared by the trace element-based gangue soil remediation agent preparation method according to any one of claims 1-9.
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