CN113528141A - Modified natural mineral soil conditioner and preparation method thereof - Google Patents
Modified natural mineral soil conditioner and preparation method thereof Download PDFInfo
- Publication number
- CN113528141A CN113528141A CN202110778603.4A CN202110778603A CN113528141A CN 113528141 A CN113528141 A CN 113528141A CN 202110778603 A CN202110778603 A CN 202110778603A CN 113528141 A CN113528141 A CN 113528141A
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- roxburgh rose
- phosphate rock
- modified natural
- natural mineral
- soil conditioner
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- 239000003516 soil conditioner Substances 0.000 title claims abstract description 22
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 18
- 239000011707 mineral Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 241000220317 Rosa Species 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 25
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002367 phosphate rock Substances 0.000 claims abstract description 24
- 239000006028 limestone Substances 0.000 claims abstract description 22
- 235000019738 Limestone Nutrition 0.000 claims abstract description 18
- 238000000197 pyrolysis Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000003213 activating effect Effects 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000003738 black carbon Substances 0.000 claims description 4
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 17
- 241000209094 Oryza Species 0.000 abstract description 11
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 11
- 235000009566 rice Nutrition 0.000 abstract description 11
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 10
- 229910052793 cadmium Inorganic materials 0.000 abstract description 9
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 9
- 235000010755 mineral Nutrition 0.000 description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- 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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- 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
- C09K2101/00—Agricultural use
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention belongs to the technical field of soil conditioners, and relates to a modified natural mineral soil conditioner and a preparation method thereof, aiming at solving the problem that the content of cadmium in soil exceeds the standard; to solve the above technical problems, the present invention provides a technical solution, which comprises P2O5The ground phosphate rock, the roxburgh rose dregs and the product containing CaCO3Limestone powder of (2); firstly, activating ground phosphate rock by oxalic acid, mixing the activated ground phosphate rock with dried roxburgh rose dregs, carrying out anoxic pyrolysis to obtain a mixed material, mixing limestone powder and the mixed material according to the proportion of 1:1 to obtain a conditioner, and acting the conditioner on soil to greatly reduce the content of heavy metal cadmium in rice and realize safe production of rice on polluted plowing land.
Description
Technical Field
The invention belongs to the technical field of soil conditioners, and particularly relates to a modified natural mineral soil conditioner and a preparation method thereof.
Background
According to the national soil pollution condition survey bulletin, 19.4% of farmland soil point position pollutants exceed the standard in China, wherein the proportion of slightly, moderately and severely polluted point positions is respectively 13.7%, 2.8%, 1.8% and 1.1%, the mainly related pollution elements comprise cadmium, mercury, arsenic, lead, chromium and other elements, and the cadmium exceeds the standard most seriously. Heavy metal has the characteristics of nondegradable and irreversible properties in soil, and when the content of the heavy metal exceeds a certain concentration, the heavy metal not only affects the soil fertility and basic physicochemical properties, but also can be accumulated in soil and plants, disturbs the normal growth of the plants, affects the yield, quality and safety of crops, and even can enter a human body through a food chain to cause damage to the health of the human body.
Disclosure of Invention
The invention provides a modified natural mineral soil conditioner and a preparation method thereof, and the problems that the cadmium in soil exceeds the standard seriously, the plant can not grow normally, the crop yield, the quality and the product safety are threatened and the like are often caused.
In order to solve the above problems, the present invention provides the following technical solutions:
a modified natural mineral soil conditioner comprises P2O5The ground phosphate rock, the roxburgh rose dregs and the product containing CaCO3The limestone powder and the roxburgh rose dregs are subjected to anoxic pyrolysis and then mixed with CaCO3Mixing the limestone powder according to the following mixing proportion: the ground phosphate rock is added with roxburgh rose dregs and CaCO3The mass ratio of the limestone powder (a) to the limestone powder (b) is 1: 1.
The fructus Rosae Normalis residue is fructus Rosae Normalis residue generated in fructus Rosae Normalis juice production process.
The method for preparing the modified natural mineral soil conditioner comprises the following steps:
step 1: grinding limestone to 400 mesh to obtain CaCO3Limestone powder with content of more than 50%;
step 2: grinding the phosphate ore to a 400 mesh sieve to obtain P2O5Phosphate rock powder with content over 25%;
and step 3: activating the ground phosphate rock by oxalic acid;
and 4, step 4: mixing the activated ground phosphate rock with the roxburgh rose dregs; and carrying out anoxic pyrolysis to obtain a mixed material;
and 5: mixing limestone powder and the mixed material according to the mass ratio of 1:1 to obtain the conditioner.
Compared with the prior art, the invention has the beneficial effects that: the prepared natural soil mineral soil conditioner has a developed pore structure and has good adsorption and complexing capabilities on heavy metals; the ground phosphate rock after the roxburgh rose dregs are doped and activated is pyrolyzed, so that the conditioner has better environmental stability, the adsorption effect of the conditioner on heavy metal ions can be improved, the migration capacity of heavy metals in soil is reduced, meanwhile, the material formed by pyrolysis can be used as a phosphorus slow-release carbon-based material in the soil, and the long-acting phosphorus nutrient release can obviously promote the stabilization of the heavy metals in the soil.
Drawings
FIG. 1 is a schematic diagram of the cadmium content of rice in accordance with the present invention;
FIG. 2 is a schematic representation of rice yield according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in detail below in relation to the preferred embodiment of the invention, a modified natural mineral soil conditioner comprising a P-containing composition2O5The ground phosphate rock, the roxburgh rose dregs and the product containing CaCO3The limestone powder and the roxburgh rose dregs are subjected to anoxic pyrolysis and then mixed with CaCO3Mixing the limestone powder according to the following mixing proportion: the ground phosphate rock is added with roxburgh rose dregs and CaCO3The mass ratio of the limestone powder (a) to the limestone powder (b) is 1: 1.
The fructus Rosae Normalis residue is fructus Rosae Normalis residue generated in fructus Rosae Normalis juice production process.
The method for preparing the modified natural mineral soil conditioner comprises the following steps:
step 1: grinding limestone to 400 mesh to obtain CaCO3Limestone powder with content of more than 50%;
step 2: grinding the phosphate ore to a 400 mesh sieve to obtain P2O5Phosphate rock powder with content over 25%;
and step 3: activating powdered rock phosphate by oxalic acid, wherein the concentration of the oxalic acid is 20mmol/L, and the activation time is 4 days when the solid-to-liquid ratio of the powdered rock phosphate to the oxalic acid is 1: 100;
and 4, step 4: mixing the activated ground phosphate rock with the roxburgh rose dregs; carrying out anoxic pyrolysis to obtain a mixed material, wherein the roxburgh rose dregs are roxburgh rose pomace generated in the production process of roxburgh rose juice, putting the roxburgh rose dregs into a drying oven at 50-60 ℃ for drying, and mixing 3.7g of activated phosphate rock powder with 200g of dried roxburgh rose dregs; then putting the carbon block into a nitrogen protection pyrolysis furnace for anoxic pyrolysis, taking out the black carbon block, and grinding the black carbon block to a 400-mesh sieve;
the anoxic pyrolysis temperature in the step 4 is 600 ℃, and the pyrolysis time is 2 hours.
And 5: mixing limestone powder and the mixed material according to the mass ratio of 1:1 to obtain the conditioner.
The beneficial effects of the present invention are further illustrated by experimental data as follows:
the experimental data selects rice, and the rice variety adopts Jingliangyou 534;the test is carried out on 16 soil conditioners in total, the test is repeated for 4 times, and the application amount, the application period and the application method of the test product are determined according to the use instruction of the product. Other field management measures are kept consistent, and the area of the community is 200m2. The information relating to the soil conditioner is detailed in table 1.
TABLE 1 soil conditioner tested and application information thereof
It should be noted that the white contrast in the upper surface means that the soil is normally fertilized and not repaired;
the quicklime control means that soil is subjected to conventional fertilization and quicklime is applied, and the content of CaO in the quicklime is 70%;
the modified natural mineral is the modified natural mineral soil conditioner.
Referring to the attached drawings 1 and 2, and the table above, the limit value of cadmium (0.2mg/kg) in rice of the pollutant limit in national food Standard for food safety (GB 2762-; referring to the above table, the product number of the invention is P15, and it can be seen from fig. 1 and fig. 2 that the content of cadmium is the lowest after the soil conditioner of the invention is used for conditioning heavy metals in soil in fig. 1; with the help of the attached figure 2, the yield of the rice adopting the soil conditioner is over 600 kg/mu.
Based on the analysis and the attached figures 1 and 2, the soil conditioner provided by the invention can greatly reduce the content of heavy metal cadmium in rice, realize safe production of rice on polluted farmland, and increase the yield of rice by applying the modified natural mineral soil conditioner prepared by the invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A modified natural mineral soil conditioner is characterized in that: comprises P2O5The ground phosphate rock, the roxburgh rose dregs and the product containing CaCO3The limestone powder and the roxburgh rose dregs are subjected to anoxic pyrolysis and then mixed with CaCO3Mixing the limestone powder according to the following mixing proportion: the mass ratio of the mixed material of the ground phosphate rock and the roxburgh rose dregs to the limestone powder is 1: 1.
2. A method of preparing a modified natural mineral soil conditioner of claim 1, wherein: the method comprises the following steps:
step 1: grinding limestone to 400 mesh to obtain CaCO3Limestone powder with content of more than 50%;
step 2: grinding the phosphate ore to a 400 mesh sieve to obtain P2O5Phosphate rock powder with content over 25%;
and step 3: activating the ground phosphate rock by oxalic acid;
and 4, step 4: mixing the activated ground phosphate rock with the roxburgh rose dregs; and carrying out anoxic pyrolysis to obtain a mixed material;
and 5: mixing limestone powder and the mixed material according to the mass ratio of 1:1 to obtain the conditioner.
3. A method of preparing a modified natural mineral soil conditioner according to claim 2, wherein: the concentration of the oxalic acid in the step 3 is 20mmol/L, the solid-to-liquid ratio of the phosphate rock powder to the oxalic acid is 1:100, and the activation time of the phosphate rock powder is 4 days.
4. A method of preparing a modified natural mineral soil conditioner according to claim 2, wherein: the roxburgh rose dregs in the step 4 are roxburgh rose pomace in the production process of roxburgh rose juice, the roxburgh rose dregs are put into a baking oven at 50-60 ℃ to be baked, and then 3.7g of activated ground phosphate rock is mixed with 200g of dried roxburgh rose dregs; and then putting the carbon block into a nitrogen protection pyrolysis furnace for anoxic pyrolysis, taking out the black carbon block, and grinding the black carbon block to a 400-mesh sieve.
5. A process for preparing a modified natural mineral soil conditioner according to any one of claims 2 to 4, wherein: the anoxic pyrolysis temperature in the step 4 is 600 ℃, and the pyrolysis time is 2 hours.
Priority Applications (1)
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| CN202110778603.4A CN113528141A (en) | 2021-07-09 | 2021-07-09 | Modified natural mineral soil conditioner and preparation method thereof |
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| CN202110778603.4A CN113528141A (en) | 2021-07-09 | 2021-07-09 | Modified natural mineral soil conditioner and preparation method thereof |
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| CA2761816A1 (en) * | 2009-05-15 | 2010-11-18 | Anthroterra Pty Ltd | Biochar complex |
| CN102559198A (en) * | 2010-12-14 | 2012-07-11 | 华中农业大学 | Passivator for controlling pollutions of heavy metals copper, lead and cadmium on soil and applications thereof |
| WO2017147979A1 (en) * | 2016-03-01 | 2017-09-08 | 广东省生态环境与土壤研究所（广东省土壤科学博物馆） | Method for preparing iron silicon sulfur multi-element composite biochar soil heavy metal conditioner |
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- 2021-07-09 CN CN202110778603.4A patent/CN113528141A/en active Pending
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