Organic carbon fertilizer and preparation method thereof
By combining industrial organic waste liquid with modified resin and nitrified bacteria, organic carbon fertilizer with nitrogen fixation, water retention and sustained release functions was prepared, which solved the problem of water-soluble organic carbon fertilizer loss and poor water retention ability, and significantly improved the fertilization effect and plant growth performance.
Patent Information
- Application Number
- CN202411363087.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing water-soluble organic carbon fertilizers are prone to loss with water, poor water retention ability and inability to fix nitrogen, resulting in poor fertilization effect.
An organic carbon fertilizer with nitrogen fixation, water retention and sustained release functions is prepared by ultrasonic mixing and concentration processes using a combination of industrial organic waste liquid, activation accelerator, modified resin and nitrifying bacteria. The modified resin consists of chitosan, sodium humate, acrylic monomers and potassium sulfate, and nitrified bacteria are responsible for the fixation of nitrogen elements.
The nitrogen fixation, sustained release and water retention effects of organic carbon fertilizers have been achieved, the soil's water holding capacity and nitrogen fertilizer utilization rate have been improved, and the plant's growth performance has been significantly improved.
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Figure BDA0005065410750000071
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of organic carbon fertilizers, and in particular relates to an organic carbon fertilizer and a preparation method thereof. Background Art
[0002] With the in-depth development of research, people have gradually come out of the misunderstanding of chemical nutrition on plant carbon nutrition, and no longer believe that plants only absorb carbon dioxide through the stomata of leaves to supplement carbon sources. Plant roots can absorb small molecules of organic matter. The fundamental reason for soil compaction is that the microbial content is too low, and the main energy sources for microbial reproduction are carbon and nitrogen. When the soil organic matter content is too low, it is not conducive to the growth and reproduction of soil microorganisms. The lack of microbial activity leads to soil compaction.
[0003] Ordinary organic fertilizers contain a lot of carbon, but their effectiveness is very low. Their water solubility is generally less than 10%, mostly around 2%, so they are difficult to be absorbed by the roots. Water-soluble organic carbon fertilizers use organic waste as raw materials. They are fermented or chemically decomposed into small-molecule water-soluble organic carbon compounds with a particle size of less than 800 nanometers, such as small-molecule sugars, alcohols, carboxylic acids, ketones, aldehydes and amino acids. They can be directly absorbed and used by plants and microorganisms, with quick results and high fertilizer efficiency.
[0004] Then, water-soluble organic carbon fertilizer has excellent solubility and can be quickly absorbed and utilized by plants, but it also means that its persistence in the soil is relatively short. In the case of excessive irrigation or rain erosion, water-soluble organic carbon fertilizer is easily lost with water, reducing the fertilization effect and poor water retention capacity. Nitrogen is extremely important for plant growth, but the nitrogen fixation capacity of water-soluble organic carbon fertilizer is limited, and nitrogen fertilizer is easily lost with water. Therefore, it is necessary to provide an organic carbon fertilizer with nitrogen fixation, water retention and slow release functions and a preparation method thereof. Summary of the invention
[0005] The object of the present invention is to provide an organic carbon fertilizer and a preparation method thereof, so as to solve the problems of the organic carbon fertilizer in the background art that it is easy to be lost with water, has poor water retention capacity and cannot fix nitrogen.
[0006] The purpose of the present invention can be achieved through the following technical solutions:
[0007] An organic carbon fertilizer comprises the following raw materials in parts by weight:
[0008] 100-120 parts of industrial organic waste liquid, 0.01-4 parts of activation promoter, 1-10 parts of modified resin, and 1-3 parts of nitrifying bacteria.
[0009] Wherein, the modified resin comprises the following raw materials:
[0010] Chitosan, sodium humate, acrylic acid, acrylamide, propylene sulfonic acid, hydroxyethyl acrylate.
[0011] Wherein, the modified resin comprises the following preparation steps:
[0012] Add Span 80, chitosan and sodium humate to cyclohexane, heat to 40°C under nitrogen atmosphere, stir, and record as solution a. At 0°C, add NaOH to distilled water, and then add acrylic acid, record as solution b. Add solution a dropwise to solution b, and add acrylamide, propylene sulfonic acid, hydroxyethyl acrylate, potassium persulfate and N,N"-methylenebisacrylamide in sequence, heat to 70°C, continue reaction for 3h, cool, wash and dry to obtain modified resin.
[0013] Furthermore, the usage ratio of Sban 80, chitosan, sodium humate, cyclohexane, NaOH, distilled water, acrylic acid, acrylamide, propylene sulfonic acid, hydroxyethyl acrylate, potassium persulfate and N,N"-methylenebisacrylamide is 0.8g:0.5g:1.5g:120mL:2g:10mL:1-3g:1-3g:1-3g:1-3g:0.072-0.216g:0.012-0.036g.
[0014] A method for preparing an organic carbon fertilizer comprises the following preparation steps:
[0015] The industrial organic waste liquid and the activation promoter are placed in an ultrasonic reactor at a frequency of 21kHz-75kHz and an acoustic intensity of 0.1-30W / cm 2 The mixture is subjected to ultrasonic mixing reaction for 10-50 minutes under the condition of , and after cooling to room temperature, liquid organic carbon fertilizer is obtained. Then, the mixture is concentrated to a water content of 1-3%, and modified resin and nitrifying bacteria are added and mixed to obtain organic carbon fertilizer.
[0016] Wherein, the activation promoter is fatty alcohol polyoxyethylene ether or polyoxyethylene sorbitan fatty acid ester.
[0017] Wherein, the liquid organic carbon fertilizer is concentrated under the conditions of temperature 90-125°C and vacuum degree 200-400Pa.
[0018] Among them, the industrial organic waste liquid includes but is not limited to sugar rolling production wastewater, monosodium glutamate production wastewater, yeast production wastewater, etc.
[0019] Wherein, the industrial organic waste liquid includes the following raw materials in percentage by mass:
[0020] Organic matter 30-50%, soluble humic acid 20-35%, amino acid 4-6%, N+P2O5+K2O 4-6%, and the balance is water.
[0021] Furthermore, the organic matter refers to the effective organic matter in the fertilizer measured according to the standard method HG / T 6082-2022.
[0022] Furthermore, the soluble humic acid is humic acid or humate soluble in water.
[0023] Furthermore, the amino acid is a general term for a class of organic compounds containing amino and carboxyl groups, and its content is determined according to the standard method NY1429-2010.
[0024] Further, in the N+P2O5+K2O, the nitrogen nutrient element is calculated as N element, the phosphorus nutrient element is calculated as P2O5, and the potassium nutrient element is calculated as K2O, and the content of one or two of them can be zero. The contents of nitrogen, phosphorus and potassium nutrient elements are determined according to the standard methods GB / T8572-2010, GB / T 8573-2017 and GB / T 8574-2010, respectively.
[0025] Beneficial effects of the present invention:
[0026] 1. The organic carbon fertilizer prepared by the present invention has the characteristic of nitrogen fixation. The present invention uses an acrylic monomer with a sulfonic acid group to synthesize a modified resin, which can adsorb ammonium nitrogen in the soil and air, thereby achieving the effect of nitrogen fixation; at the same time, due to the addition of nitrifying bacteria, the nitrogen-containing elements in the air and soil can be converted into nitrate nitrogen, which is then adsorbed by the modified resin with a hydrophilic group, greatly increasing the effect of nitrogen fixation.
[0027] 2. The organic carbon fertilizer prepared by the present invention has the characteristics of slow release. In the process of adding water and fertilizing, the modified resin prepared by the present invention using chitosan, sodium humate and hydrophilic acrylic monomers will absorb a large amount of water and water-soluble organic carbon fertilizer. As the modified resin slowly degrades in the soil, the sodium humate in the modified resin and the adsorbed liquid organic carbon fertilizer can be slowly released into the soil, achieving a slow release effect.
[0028] 3. The organic carbon fertilizer prepared by the present invention has the characteristic of water retention. The present invention uses hydrophilic sodium humate and acrylic monomers with hydrophilic groups to further synthesize modified resins, which have extremely strong water absorption. Combined with the slow-release properties of the modified resin, it can achieve the water retention effect of keeping soil and waste moist. DETAILED DESCRIPTION
[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] Example 1
[0031] This embodiment provides a modified resin, comprising the following preparation steps:
[0032] 0.8g of Span 80, 0.5g of chitosan and 1.5g of sodium humate were added to 120mL of cyclohexane, heated to 40℃ under nitrogen atmosphere, stirred for 20min, and recorded as solution a. At 0℃, 2.0g of NaOH was added to 10mL of distilled water, and then 1g of acrylic acid was added, recorded as solution b. Solution a was added dropwise to solution b, and the addition was completed within 10min. 1g of acrylamide, 1g of propylene sulfonic acid, 1g of hydroxyethyl acrylate, 0.072g of potassium persulfate and 0.012g of N,N"-methylenebisacrylamide were added in sequence, and the temperature was raised to 70℃, and the reaction was continued for 3h. After cooling, the mixture was washed with anhydrous ethanol and dried in a vacuum drying oven at 75℃ for 12h to obtain the modified resin.
[0033] Example 2
[0034] This embodiment provides a modified resin, comprising the following preparation steps:
[0035] 0.8g of Span 80, 0.5g of chitosan and 1.5g of sodium humate were added to 120mL of cyclohexane, heated to 40℃ under nitrogen atmosphere, stirred for 20min, and recorded as solution a. At 0℃, 2.0g of NaOH was added to 10mL of distilled water, and then 2g of acrylic acid was added, recorded as solution b. Solution a was added dropwise to solution b, and the addition was completed within 10min. 2g of acrylamide, 2g of propylene sulfonic acid, 2g of hydroxyethyl acrylate, 0.14g of potassium persulfate and 0.024g of N,N"-methylenebisacrylamide were added in sequence, and the temperature was raised to 70℃, and the reaction was continued for 3h. After cooling, the mixture was washed with anhydrous ethanol, and dried in a vacuum drying oven at 75℃ for 12h, the modified resin was obtained.
[0036] Example 3
[0037] This embodiment provides a modified resin, comprising the following preparation steps:
[0038] 0.8g of Span 80, 0.5g of chitosan and 1.5g of sodium humate were added to 120mL of cyclohexane, heated to 40℃ under nitrogen atmosphere, stirred for 20min, and recorded as solution a. At 0℃, 2.0g of NaOH was added to 10mL of distilled water, and then 3g of acrylic acid was added, recorded as solution b. Solution a was added dropwise to solution b, and the addition was completed within 10min. 3g of acrylamide, 3g of propylene sulfonic acid, 3g of hydroxyethyl acrylate, 0.216g of potassium persulfate and 0.036g of N,N"-methylenebisacrylamide were added in sequence, and the temperature was raised to 70℃, and the reaction was continued for 3h. After cooling, the mixture was washed with anhydrous ethanol, and dried in a vacuum drying oven at 75℃ for 12h, the modified resin was obtained.
[0039] Example 4
[0040] This embodiment provides an organic carbon fertilizer, comprising the following preparation steps:
[0041] 1 kg of sugar rolling wastewater and 0.1 g of fatty alcohol polyoxyethylene ether were placed in an ultrasonic reactor and the reaction mixture was stirred at a frequency of 21 kHz and an intensity of 0.1 W / cm 2 The mixture was subjected to ultrasonic mixing reaction for 50 minutes, and cooled to room temperature to obtain liquid organic carbon fertilizer. The mixture was then concentrated at 90°C and vacuum degree 200Pa to a water content of 1%, and 10g of the modified resin prepared in Example 1 and 10g of nitrifying bacteria were added and mixed to obtain organic carbon fertilizer.
[0042] The sugar rolling wastewater includes the following raw materials in mass percentage: 45% organic matter, 35% soluble humic acid, 5% amino acid, 5% N+P2O5+K2O, and the balance is water. The mass ratio of nitrogen, P2O5, and K2O in N+P2O5+K2O is 2:1:2.
[0043] Example 5
[0044] This embodiment provides an organic carbon fertilizer, comprising the following preparation steps:
[0045] 1 kg of monosodium glutamate production wastewater and 0.1 g of polyoxyethylene sorbitan fatty acid ester were placed in an ultrasonic reactor and the frequency was 21 kHz and the sound intensity was 0.1 W / cm 2 The mixture was subjected to ultrasonic mixing reaction for 50 minutes, and then cooled to room temperature to obtain liquid organic carbon fertilizer. The mixture was then concentrated at 100° C. and vacuum degree 300 Pa to a water content of 2%, and 50 g of the modified resin prepared in Example 2 and 15 g of nitrifying bacteria were added and mixed to obtain organic carbon fertilizer.
[0046] The monosodium glutamate production wastewater includes the following raw materials in mass percentage: 30% organic matter, 20% soluble humic acid, 4% amino acid, 6% N+P2O5+K2O, and the balance is water. The mass ratio of nitrogen, P2O5, and K2O in N+P2O5+K2O is 2:1:2.
[0047] Example 6
[0048] This embodiment provides an organic carbon fertilizer, comprising the following preparation steps:
[0049] 1 kg yeast production wastewater and 0.1 g fatty alcohol polyoxyethylene ether were placed in an ultrasonic reactor and the reaction mixture was stirred at a frequency of 21 kHz and an intensity of 0.1 W / cm 2 The mixture was subjected to ultrasonic mixing reaction for 50 minutes, and then cooled to room temperature to obtain liquid organic carbon fertilizer. The mixture was then concentrated at a temperature of 125° C. and a vacuum degree of 400 Pa to a water content of 3%, and 100 g of the modified resin prepared in Example 3 and 30 g of nitrifying bacteria were added and mixed to obtain organic carbon fertilizer.
[0050] The yeast production wastewater includes the following raw materials in mass percentage: 50% organic matter, 33% soluble humic acid, 6% amino acid, 4% N+P2O5+K2O, and the remainder is water. The mass ratio of nitrogen, P2O5, and K2O in N+P2O5+K2O is 2:1:2.
[0051] Comparative Example 1
[0052] This embodiment provides an organic carbon fertilizer, comprising the following preparation steps:
[0053] Compared with Example 4, on the basis of Example 4, 10 g of nitrifying bacteria was replaced by 10 g of rhizobia, and the remaining raw materials and preparation steps were the same as those in Example 4.
[0054] Comparative Example 2
[0055] This embodiment provides an organic carbon fertilizer, comprising the following preparation steps:
[0056] Compared with Example 4, on the basis of Example 4, 10 g of nitrifying bacteria were removed, and the remaining raw materials and preparation steps were the same as those of Example 4.
[0057] Comparative Example 3
[0058] This embodiment provides an organic carbon fertilizer, comprising the following preparation steps:
[0059] Compared with Example 4, on the basis of Example 4, 10 g of the modified resin prepared in Example 1 was removed, and the remaining raw materials and preparation steps were the same as those in Example 4.
[0060] The organic carbon fertilizers obtained in Examples 4-6 and Comparative Examples 1-3 were applied to Kyoho grapes. 5 kg of organic carbon fertilizers obtained in each example and each comparative example were used per mu. The Kyoho grape field was divided into 24 plots, and each example and each comparative example was applied in three plots. The field management of each plot was the same, and the organic carbon fertilizer was applied once in the fruit setting period and the young fruit period.
[0061] The test method for single-grain weight and ear weight is as follows: select 10 typical fully mature ears, weigh the mass (g), and express the result as the average value, accurate to 0.01; test the single-grain weight using a similar method.
[0062] The soluble solids content of Kyoho grapes was determined according to NY / T 2637-2014 "Determination of soluble solids content of fruits and vegetables - refractometer method", and the test was performed 10 times and the average value was taken;
[0063] According to NY / T 3943-2021 "Ion chromatography for the determination of glucose, fructose, sucrose and sorbitol in fruits", the total content of glucose, fructose and sucrose in Kyoho grapes was determined, and the sugar percentage was calculated based on the total mass of the tested sample. The test was conducted 10 times and the average value was taken.
[0064] The results are shown in Table 1:
[0065] Table 1
[0066]
[0067] As can be seen from Table 1, compared with Comparative Examples 2 and 3, Examples 4-6 can be seen that when the modified resin and nitrifying bacteria coexist, the single grain weight, bunch weight, soluble solid content, and sugar content of Kyoho grapes are greatly improved, which greatly improves the quality of Kyoho grapes, which is inseparable from its nitrogen fixation effect on nitrate nitrogen. When compared with Comparative Example 1, it can be seen that the fertilizer effect of the modified resin absorbing ammonium nitrogen and the nitrate nitrogen absorbed in combination with nitrifying bacteria is better than the nitrogen fixation effect of rhizobia.
[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An organic carbon fertilizer, characterized in that: The following raw materials are included by mass: 100-120 parts of industrial organic waste liquid, 0.01-4 parts of activation promoter, 1-10 parts of modified resin, and 1-3 parts of nitrifying bacteria.
2. An organic carbon fertilizer according to claim 1, characterized in that: The modified resin comprises the following raw materials: Chitosan, sodium humate, acrylic acid, acrylamide, propylene sulfonic acid, hydroxyethyl acrylate.
3. An organic carbon fertilizer according to claim 1, characterized in that: The modified resin comprises the following preparation steps: Add Span 80, chitosan and sodium humate to cyclohexane, heat to 40°C under nitrogen atmosphere, stir, and record as solution a; add NaOH to distilled water at 0°C, and then add acrylic acid, record as solution b; add solution a dropwise to solution b, and add acrylamide, propylene sulfonic acid, hydroxyethyl acrylate, potassium persulfate and N,N"-methylenebisacrylamide in sequence, heat to 70°C, continue the reaction for 3h, cool, wash and dry to obtain the modified resin.
4. An organic carbon fertilizer according to claim 3, characterized in that: The dosage ratio of Sban 80, chitosan, sodium humate, cyclohexane, NaOH, distilled water, acrylic acid, acrylamide, propylene sulfonic acid, hydroxyethyl acrylate, potassium persulfate and N,N"-methylenebisacrylamide is 0.8g:0.5g:1.5g:120mL:2g:10mL:1-3g:1-3g:1-3g:1-3g:0.072-0.216g:0.012-0.036g.
5. A method for preparing an organic carbon fertilizer as described in any one of claims 1 to 4, characterized in that: The method comprises the following preparation steps: The industrial organic waste liquid and the activation promoter are placed in an ultrasonic reactor, ultrasonically mixed and reacted, and liquid organic carbon fertilizer is obtained after cooling to room temperature; after concentration, modified resin and nitrifying bacteria are added and mixed, the organic carbon fertilizer is obtained.
6. The method for preparing an organic carbon fertilizer according to claim 5, characterized in that: The industrial organic waste liquid comprises the following raw materials in percentage by mass: Organic matter 30-50%, soluble humic acid 20-35%, amino acid 4-6%, N+P2O5+K2O 4-6%, and the balance is water.
7. The method for preparing an organic carbon fertilizer according to claim 5, characterized in that: The liquid organic carbon fertilizer is concentrated under the conditions of a temperature of 90-125° C. and a vacuum degree of 200-400 Pa.
8. The method for preparing an organic carbon fertilizer according to claim 6, characterized in that: The liquid organic carbon fertilizer is concentrated under the conditions of temperature of 90-125° C. and vacuum degree of 200-400 Pa to a water content of 1-3%.