KR102430858B1 - Liquid fertilizer composition and manufacturing for therof - Google Patents

Abstract

A liquid fertilizer composition of the present invention comprises: 1000 parts by weight of pig urine; 80 to 150 parts by weight of a copper nano-composition; and 40 to 100 parts by weight of a composition for quality improvement, wherein the copper nano composition is a colloidal aqueous solution including 1,500 to 2,500 ppm of nonionic copper nanoparticles having an average particle diameter (D50) of 2 to 10 nm and the composition for quality improvement includes organic acid and amino acid.

Description

Liquid fertilizer composition and its manufacturing method

The present invention relates to a liquid fertilizer composition and a method for manufacturing the same.

In general, pig manure discharged from livestock farms has a lot of discharge and a lot of water content, and there is a lot of difficulty in its treatment because it has a strong odor due to high protein content.

This pig manure accounts for about 56% of Korea's manure production, and can be treated by decomposition and dilution through biological or chemical manure treatment methods, or by transporting it to the ocean by a marine treatment company and dumping it into the sea. Alternatively, after separating the manure from the solid and liquid, the liquid manure is transported to a manure treatment plant and discharged into a river or sea through a purification facility. can

However, the above method is costly, and there is a need for a method for treating pig manure because a problem of causing marine pollution may occur.

Since pig manure is composed of organic matter, it has a high value as an organic fertilizer and can be composted. Therefore, there is a need to develop a liquid fertilizer that is easy to absorb organic matter by plants without odor by removing odors generated from pig manure.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid fertilizer composition and a method for manufacturing the same, in which plants can easily absorb organic matter by utilizing pig urine from which odor has been removed.

All of the above and other objects of the present invention can be achieved by the present invention described below.

One aspect of the present invention relates to a liquid fertilizer composition.

According to one embodiment, the liquid fertilizer composition includes 1000 parts by weight of pig urine, 80 to 150 parts by weight of the copper nano composition, and 40 to 100 parts by weight of the composition for quality improvement, and the copper nano composition has an average particle diameter (D50) of 2 nm It is a colloidal aqueous solution containing 1,500 to 2,500 ppm of nonionic copper nanoparticles of 10 nm to 10 nm, and the composition for quality improvement includes an organic acid and an amino acid.

The liquid fertilizer composition may further include at least one of 0.001 to 0.1 parts by weight of a titanium dioxide catalyst and 0.001 to 0.1 parts by weight of zinc oxide based on 100 parts by weight of the copper nanocomposition.

The titanium dioxide catalyst includes titanium dioxide (TiO ₂ ), copper (Cu), and magnesium (Mg), and the copper (Cu) and magnesium (Mg) in the titanium dioxide catalyst may be included in an amount of 5 to 50% by weight. .

The copper (Cu) and magnesium (Mg) may have a weight ratio of 10:90 to 20:80.

The quality improvement composition may include 20 to 50 parts by weight of an organic acid and 20 to 50 parts by weight of an amino acid.

The quality improvement composition may further include 0.5 to 2 parts by weight of phosphorous acid.

The organic acid may include 85 to 95% by weight of lactic acid and 5 to 15% by weight of citric acid.

The lactic acid and citric acid may have a weight ratio of 8:1 to 12:1.

The amino acid may include 50 to 70% by weight of glycine and 30 to 50% by weight of methionine.

The phosphorous acid may include at least one of potassium phosphite, calcium phosphite and sodium phosphite.

Another aspect of the present invention relates to a method for preparing a liquid fertilizer composition.

According to one embodiment, in the method for preparing the liquid fertilizer composition, the copper nanocomposition is a copper chloride (CuCl ₂ ) aqueous solution containing 1 mol to 6 mol of sodium hydroxide (NaOH) per 1 mol of copper chloride (CuCl ₂ ) A step of producing copper oxide and copper hydroxide in a solution by inputting 1 to 12 moles of hydrazine (N ₂ H ₄ ) per mole of copper chloride (CuCl ₂ ) to the produced copper oxide and copper hydroxide (N 2 H 4 ) It may include the step of preparing a colloidal aqueous solution containing copper nanoparticles by reducing the particles.

The copper nanoparticles may have an average particle diameter (D50) of 2 nm to 10 nm, and may be included in the colloidal aqueous solution at a concentration of 1,500 ppm to 2,500 ppm.

The present invention has the effect of providing a liquid fertilizer composition for plants to easily absorb organic matter by utilizing pig urine from which odor has been removed and a method for preparing the same.

Hereinafter, the present invention will be described in more detail.

In describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In addition, in interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In addition, in this specification, 'X to Y' representing a range means 'X or more and Y or less'.

In addition, in the present specification, parts by weight may be used to indicate the ratio between each component, and if necessary, may be based on 1000 parts by weight of pig urine, but is not limited thereto.

liquid fertilizer composition

The liquid fertilizer composition according to an embodiment of the present invention includes 1000 parts by weight of pig urine, 80 to 150 parts by weight of a copper nano composition, and 40 to 100 parts by weight of a composition for quality improvement, wherein the copper nano composition has an average particle diameter (D50) It is a colloidal aqueous solution containing 1,500 to 2,500 ppm of nonionic copper nanoparticles of 2 nm to 10 nm, and the composition for quality improvement includes an organic acid and an amino acid.

The pig urine is livestock waste generated from pigs and has a high organic content and can be used as organic fertilizer.

The liquid fertilizer composition includes pig urine, a copper nano composition, and a quality improvement composition.

The copper nanocomposition has a nano-unit size and includes non-ionized copper particles (CuO) (hereinafter, non-ionic copper nanoparticles).

The copper nanocomposition is a colloidal aqueous solution containing 1,500 to 2,500 ppm of nonionic copper nanoparticles having an average particle diameter (D50) of 2 nm to 10 nm.

The nonionic copper nanoparticles may exhibit an excellent effect in removing odors generated in pig urine at 2 nm to 10 nm, specifically 3 nm to 8 nm.

In addition, when the concentration of the nonionic copper nanoparticles contained in the colloidal aqueous solution is less than 1,500 ppm, the odor removal effect is insignificant, and when it exceeds 2,500 ppm, there is a fear that the copper nanoparticles remain as impurities.

The liquid fertilizer composition of the present invention contains 80 to 150 parts by weight, specifically, 90 to 130 parts by weight, of the copper nano composition based on 1000 parts by weight of pig urine, so that the odor generated from pig urine can be removed.

The liquid fertilizer composition may further include at least one of a titanium dioxide catalyst and zinc oxide.

The titanium dioxide (TiO ₂ ) catalyst is a catalyst for generating electrons (e) of the conduction band (CB) and holes (h) of the valence band (VB) by light of a specific wavelength. Such a titanium dioxide catalyst can further enhance the antibacterial and deodorizing effect.

In an embodiment, the titanium dioxide catalyst includes titanium dioxide (TiO ₂ ), copper (Cu) and magnesium (Mg), and the copper (Cu) and magnesium (Mg) in the titanium dioxide catalyst is 5 to 50 wt% may be included as

The titanium dioxide may have an average particle diameter (D50) of 1 nm to 100 nm, specifically 5 nm to 80 nm.

In addition, the titanium dioxide may include two or more types of titanium dioxide having different average particle diameters (D50). In this case, the catalyst efficiency according to the compactness of the catalyst is improved.

For example, the titanium dioxide (TiO ₂ ) includes first and second titanium dioxide (TiO ₂ ) having different average particle diameters (D50), and the first titanium dioxide (TiO ₂ ) has an average particle diameter (D50). 1 nm to 70 nm, specifically 10 nm to 50 nm, the second titanium dioxide (TiO ₂ ) may have an average particle diameter (D50) of 20 nm to 100 nm, specifically 20 nm to 80 nm.

The average particle diameter (D50) ratio of the first titanium dioxide (TiO ₂ ) and the second titanium dioxide (TiO ₂ ) may be 1:0.4 to 1:0.6. In the above average particle diameter ratio range, the titanium dioxide catalyst becomes more dense and the catalyst efficiency can be maximized.

The titanium dioxide (TiO ₂ ) may be included in an amount of 50 to 95 wt%, specifically 60 to 90 wt% of the titanium dioxide catalyst. In the above content range, while sufficient catalytic efficiency can be exhibited, other effects can also be exhibited at the same time.

The copper (Cu) and magnesium (Mg) are included in the catalyst component to increase the light absorption in the visible ray region, thereby not only improving the catalytic efficiency, but also maximizing the catalytic efficiency by more easily exhibiting catalytic activity. can be

In particular, in the titanium dioxide catalyst of the present invention, the weight ratio of copper (Cu) and magnesium (Mg) is applied in the range of 10:90 to 20:80, specifically 12:88 to 16:84, so as to be close to the eutectic point. Thus, a titanium dioxide catalyst is prepared at a remarkably low temperature. This can minimize the transition to the rutile crystal structure, thereby maximizing the catalyst efficiency. In this case, the copper (Cu) and magnesium (Mg) may be eutectic or more. In this case, the copper (Cu) and magnesium (Mg) components can improve the bonding force between the titanium dioxide catalyst components, and serve to mold the titanium dioxide catalyst into a specific particle size range. Specifically, the particle size of the titanium dioxide catalyst may be determined according to the content of the copper (Cu) and magnesium (Mg) components.

The copper (Cu) and magnesium (Mg) may be included in an amount of 5 to 50% by weight, specifically 10 to 45% by weight, and more specifically 15 to 40% by weight of the titanium dioxide catalyst. In the above content range, the titanium dioxide catalyst can not only improve the catalytic efficiency in the visible region and the catalytic efficiency at a lower current, but also minimize the side effect of discoloration by the titanium dioxide catalyst.

The titanium dioxide catalyst may be prepared by a process comprising the step of forming a mixture of titanium dioxide (TiO ₂ ) powder, copper (Cu) and magnesium (Mg), and heat-treating the mixture. The heat treatment may be performed at 400° C. to 900° C., specifically 450° C. to 750° C., and more specifically 460° C. to 550° C. in an H ₂ /Ar atmosphere. Copper (Cu) and magnesium (Mg) contained in the titanium dioxide catalyst of the present invention may be applied in a weight ratio of 10:90 to 20:80, and may be eutecticated in part or more in the heat treatment temperature range, thereby forming the catalyst The bonding force between them can be sufficiently added. In particular, the content of the copper (Cu) and magnesium (Mg) components may affect the particle size of the titanium dioxide catalyst, specifically, 5 to 50 wt% of the copper (Cu) and magnesium (Mg) in the titanium dioxide catalyst. It is included to control the average particle diameter (D50) of the titanium dioxide catalyst to 1 mm to 10 mm.

The titanium dioxide catalyst may be included in an amount of 0.001 to 0.1 parts by weight, specifically 0.005 to 0.05 parts by weight, based on 100 parts by weight of the copper nanocomposition. In the above content range, the odor removal effect of the liquid fertilizer composition can be maximized.

The zinc oxide (ZnO) is a white to yellowish fine amorphous powder, has no smell and taste, and has a property of slowly absorbing carbon dioxide from the air.

The zinc oxide has a strong deodorizing effect in metals while performing a catalytic function.

The zinc oxide may be included in an amount of 0.001 to 0.1 parts by weight, specifically 0.005 to 0.05 parts by weight, based on 100 parts by weight of the copper nanocomposition. While the odor removal effect is sufficient in the above content range, it is possible to prevent an increase in manufacturing cost.

The composition for quality improvement may exhibit an effect of improving the absorbency of the soil active ingredient absorbed by the liquid fertilizer composition by plants.

The quality improvement composition may include an organic acid and an amino acid.

The organic acid is a generic term for an organic compound having acidity, and by the action of the organic acid, the fixed component in the soil is converted into a form easily absorbed by plants, and minerals in the soil can be eluted by the chelating function, Plant absorption of beneficial active ingredients can be improved. In addition, it is possible to stabilize the mixture of the liquid fertilizer composition dissolved in water.

The organic acid may include 20 to 50 parts by weight, specifically 30 to 40 parts by weight, based on 1000 parts by weight of pig urine, and in the above range, chelate beneficial components for plants in the soil to improve plant absorbency, thereby improving plant absorption. It can make growth excellent.

The organic acid may include lactic acid and citric acid.

The lactic acid can help root rooting, and can exhibit the effect of increasing the effectiveness of fertilizer components in the soil. It can also help normalize phosphate absorption by decomposing and solubilizing insoluble phosphate.

The lactic acid may be 85 to 95% by weight, specifically 87 to 92% by weight, and it is possible to improve the absorption of trace elements such as magnesium, phosphoric acid, calcium in the soil in the above range.

The citric acid is contained as a free acid in the seeds or juices of many plants, and is particularly abundant in lemons, plums, and citrus fruits, and is known as a basic organic acid.

The citric acid can implement a liquid fertilizer composition in which sediment is minimized by preventing gelation and dissolving the components included in the liquid fertilizer composition.

The citric acid may be 5 to 15% by weight, specifically 7 to 12% by weight, and in the above range, it is possible to facilitate mixing of the liquid fertilizer composition to stabilize the mixture. Therefore, it is possible to improve the plant absorption of beneficial components in the soil.

The lactic acid and citric acid may have a weight ratio of 8:1 to 12:1, specifically 9:1 to 11:1, and improve the absorption of trace elements such as magnesium, phosphoric acid, and calcium in the soil in the above range, thereby improving the absorption of plants. It can make growth excellent.

The amino acids can not only provide the efficacy of amino acids directly to plants, but also enhance the absorption of minerals by chelation and improve soil properties.

The amino acid may include 20 to 50 parts by weight, specifically 30 to 40 parts by weight, based on 1000 parts by weight of pig urine, and it is possible to improve the soil in the above range and improve the microbial efficiency in the soil. In addition, it can provide the efficacy of amino acids directly to plants and help plants to easily absorb microelements in the soil.

The amino acid may include glycine and methionine.

The glycine can help plants absorb and transport minerals by chelating minerals that are not available in the soil.

The glycine may be 50 to 70% by weight, specifically 55 to 65% by weight, and it may help plants to absorb minerals in the soil in the above range.

The methionine contains sulfur, promotes the physiological activity and growth of plants, increases the recovery of plant cells weakened by lack of sunlight and cold damage, improves rooting and elongation, and can increase the survival period of plants.

The methionine may be 30 to 50% by weight, specifically 35 to 45% by weight, and may be helpful for rooting and elongation of plants in the above range.

The quality improvement composition may further include phosphorous acid.

Phosphoric acid is the most basic component of cells and plays the most important role in cell division and is involved in various physiological processes and protein synthesis of plants. In addition, it promotes the elongation of the root and increases the nutrient absorption area of the root, thereby increasing the cold resistance and dryness of the plant. However, the plant has a weak absorption capacity of phosphoric acid itself, so when phosphoric acid is deficient, there are problems in that the nutrient growth of the plant is reduced, the root growth is poor, and the formation and maturation of fruits and seeds are inhibited.

The phosphorous acid has an excellent effect in improving photosynthesis of plants and providing nutrients in tissues as a form that plants can easily absorb.

The phosphorous acid may be 0.5 to 2 parts by weight, specifically 1 to 1.7 parts by weight, based on 1000 parts by weight of pig urine, and it is helpful for root growth and photosynthesis of plants by increasing the absorption capacity of phosphorous acid in the above range, and nutrition in plant tissues material can be provided effectively.

The phosphorous acid may include at least one of potassium phosphite, calcium phosphite, and sodium phosphite.

Method for preparing liquid fertilizer composition

Another aspect of the present invention relates to a method for preparing a liquid fertilizer composition.

In the method for preparing the liquid fertilizer composition of the present invention, the copper nanocomposition is prepared by adding 1 mol to 6 mol of sodium hydroxide (NaOH) per 1 mol of copper chloride (CuCl ₂ ) to an aqueous solution of copper (CuCl ₂ ) to obtain copper oxide and Forming copper hydroxide in a solution, and adding 1 to 12 moles of hydrazine (N ₂ H ₄ ) per 1 mole of copper chloride (CuCl ₂ ) to the produced copper oxide and copper hydroxide to reduce to nonionic copper nanoparticles to reduce copper It may include preparing a colloidal aqueous solution containing nanoparticles.

In the present invention, copper chloride (CuCl ₂ ) is used as a precursor of copper nanoparticles. Copper chloride (CuCl ₂ ), unlike copper sulfate (CuSO ₄ ), has an anionic functional group with relatively high electronegativity, so it has an anionic effect different from that of sulfate ions in the solution, further reducing the aggregation of the produced particles with each other. can be suppressed. Therefore, it is possible to manufacture finer particles, and exhibits an excellent effect of controlling the surface shape.

The step of generating copper oxide and copper hydroxide in the solution by adding sodium hydroxide (NaOH) to the copper chloride (CuCl ₂ ) aqueous solution includes adding sodium hydroxide (NaOH) to the copper chloride (CuCl ₂ ) aqueous solution to form an intermediate copper oxide ( CuO) and copper hydroxide (Cu(OH) ₂ ), which is a complex compound, may be represented by the following Chemical Reaction Formula 1 as a step.

[Chemical Scheme 1]

In Chemical Reaction Formula 1, the role of sodium hydroxide (NaOH) is to separate chlorine from copper atoms of copper chloride (CuCl ₂ ) and input it so that copper oxide and copper hydroxide are produced, and the amount of sodium hydroxide (NaOH) input is copper chloride It may be added in the range of 1 to 6 moles per 1 mole. When the amount of added sodium hydroxide exceeds 6 mol, the atmosphere in the solution changes to a strong basicity, so the reduction reaction of hydrazine added later does not occur smoothly, and it is not economical because a lot of unreacted substances are generated, and residual ions in the solution This is because there is also an aspect that impurities increase as there are many. On the other hand, when the amount of sodium hydroxide (NaOH) to be added is less than 1 mol, the form of copper oxide (Cu _x O), which is an intermediate, is not completely formed, so that the reaction is difficult to be performed smoothly.

The temperature of the copper chloride (CuCl ₂ ) aqueous solution to which the sodium hydroxide (NaOH) is added is preferably adjusted to be in the range of 25°C to 60°C. If the temperature of the aqueous copper chloride solution is less than 25 ℃, it is difficult to form the intermediate, and if it exceeds 60 ℃, the intermediate is generated too quickly and the intermediate may aggregate, as well as the reduction reaction proceeds at excessively high temperature. The thermal stability of the intermediate may be reduced.

In the step of reducing the copper nanoparticles by adding hydrazine (N ₂ H ₄ ) to the produced copper oxide and copper hydroxide, hydrazine (N ₂ H ₄ ) is added to form an intermediate copper oxide (CuO) and complex compound. By reducing phosphorus copper hydroxide (Cu(OH) ₂ ), copper nanoparticles (Cu ⁰ ) deposited in a non-ionic state may be prepared, and may be represented by Chemical Reaction Formula 2 below.

[Chemical Scheme 2]

In Chemical Reaction Formula 2, the amount of hydrazine (N ₂ H ₄ ) is added in the range of 1 to 12 moles per 1 mole of copper chloride. When added in excess of moles, the reduction reaction occurs at a fast rate due to the use of an excess of hydrazine, but the aggregation of the obtained copper nanoparticles may be severe.

The temperature of the aqueous solution to which the hydrazine (N ₂ H ₄ ) is added is preferably maintained in the range of 35°C to 60°C. When the temperature of the aqueous solution to be introduced is less than 35 °C, not only the reaction rate of the reduction reaction is low, but also the conversion rate of the reduction reaction is low, so that complete reduction may not be achieved. On the other hand, when it exceeds 60° C., the reaction rate of the reduction reaction may be somewhat increased, but the aggregation phenomenon of copper nanoparticles produced by the reaction proceeds at a high temperature may be severe.

In addition, the copper nanoparticles may have an average particle diameter (D50) of 2 nm to 10 nm, and may be included in the colloidal aqueous solution at a concentration of 1,500 ppm to 2,500 ppm.

In another embodiment, the liquid fertilizer manufacturing method may further include a step of adding and mixing at least one of 0.001 to 0.1 parts by weight of a titanium dioxide catalyst and 0.001 to 0.1 parts by weight of zinc oxide based on 100 parts by weight of the copper nanocomposition. can

The titanium dioxide catalyst and zinc oxide are substantially the same as those described in the liquid fertilizer composition according to one aspect of the present invention.

Hereinafter, the configuration and operation of the present invention will be described in more detail through preferred embodiments of the present invention. However, this is presented as a preferred example of the present invention and cannot be construed as limiting the present invention in any sense.

Content not described here will be omitted because it can be technically inferred sufficiently by those skilled in the art.

Example

Example 1

(1) Preparation of copper nano-composition

Prepare 100 ml of a 2M aqueous solution of copper chloride (CuCl2) and keep the temperature at 35°C by vigorous stirring while heating. When the temperature of the aqueous copper chloride solution is kept constant in the above temperature range, 6M of sodium hydroxide (NaOH) is added at once. After adding sodium hydroxide (NaOH), 15M of hydrazine (N2H4) was added at once while maintaining the temperature of the solution at 45° C. to reduce copper particles to obtain a colloidal aqueous solution to prepare a copper nanocomposition, as shown in Table 1 below. A liquid fertilizer composition was prepared according to the content. The concentration of copper nanoparticles in the colloidal aqueous solution was about 2,000 ppm.

The average particle diameter (D50) of the copper nanoparticles included in the finally prepared liquid fertilizer composition was measured to be 3 nm.

(2) Preparation of liquid fertilizer composition

A liquid fertilizer composition was prepared by mixing 120 parts by weight of the copper nano composition prepared above, 35 parts by weight of an organic acid as a quality improvement composition, and 35 parts by weight of an amino acid based on 1000 parts by weight of pig urine. Here, the organic acid contained 90% by weight of lactic acid and 10% by weight of citric acid, and the amino acid contained 60% by weight of glycine and 40% by weight of methionine.

Example 2

A liquid fertilizer composition was prepared in the same manner as in Example 1, except that the titanium dioxide catalyst and potassium phosphite were further included in the contents shown in Table 1 below.

The titanium dioxide catalyst is a mixture of 80 wt% of titanium dioxide (TiO ₂ , Aldrich), 2.8 wt% of copper (Cu), and 17.2 wt% of magnesium (Mg), and the mixture is put into a tube furnace, and H ₂ /Ar atmosphere After heating at 530° C. for 5 hours, the mixture was stirred in 1.0M HCl solution for 24 hours, washed with water to remove acid, and then dried. At this time, the average particle diameter (D50) of the titanium dioxide catalyst was 5.2 mm.

The titanium dioxide catalyst was included in an amount of 0.01 parts by weight based on 100 parts by weight of the copper nanocomposition.

Comparative Examples 1 - 3

A liquid fertilizer composition was prepared in the same manner as in Example 1, except that each component was included in the content shown in Table 1 below.

Experimental Example 1- Effect of removing odor

200ml of the liquid fertilizer composition prepared in Examples and Comparative Examples was placed in a container, air was automatically collected, and ammonia, hydrogen sulfide and volatile organic compounds (VOCs) were measured using a complex odor meter (MultiRAE LITE, RAE SYSTEMS, USA). , the results are shown in Table 2 below.

As can be seen from the results in Table 2, the liquid fertilizer compositions of Examples 1 and 2 containing the copper nano composition and the composition for quality improvement were Comparative Example 1, which lacked the composition for quality improvement, and the copper nano composition. It can be seen that the odor removal effect is superior to that of the liquid fertilizer compositions of Comparative Examples 2 and 3.

Experimental Example 2- Improvement of soil characteristics and fertilizer absorption of plants

50m of 100L of the liquid fertilizer composition prepared in Examples and Comparative Examples²to mix well with soil with an area of Samples were treated by fertilizing the entire layer. Tomatoes were planted as a cultivated crop on September 23, 2021, and for chemical fertilizer treatment and growth management, a crop cultivation test was performed according to the Rural Development Administration standard cultivation method, and the final harvest was carried out on November 17. The test results are shown in Table 3 below.

As can be seen from the results in Table 3, the liquid fertilizer compositions of Examples 1 and 2 containing the copper nano composition and the composition for quality improvement were Comparative Example 1, which lacked the composition for quality improvement, and the copper nano composition. Compared with the liquid fertilizer compositions of Comparative Examples 2 and 3, it can be confirmed that the growth is excellent and the compost effect is high.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, but may be manufactured in a variety of different forms, and those of ordinary skill in the art to which the present invention pertains will appreciate the technical spirit of the present invention. However, it will be understood that the invention may be embodied in other specific forms without changing essential features. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (6)

1000 parts by weight of pig urine;
80 to 150 parts by weight of the copper nano composition;
40 to 100 parts by weight of a composition for improving quality; and
0.001 to 0.1 parts by weight of a titanium dioxide catalyst,
The copper nano composition is a colloidal aqueous solution containing 1,500 to 2,500 ppm of nonionic copper nanoparticles having an average particle diameter (D50) of 2 nm to 10 nm,
The quality improvement composition comprises 20 to 50 parts by weight of an organic acid; 20 to 50 parts by weight of amino acids; and 0.5 to 2 parts by weight of phosphorous acid;
The organic acid is 85 to 95% by weight of lactic acid; and 5 to 15% by weight of citric acid.
delete delete delete delete In the method for preparing the liquid fertilizer composition of claim 1,
The copper nano composition,
Copper chloride (CuCl ₂ ) copper chloride (CuCl ₂ ) 1 mole to 6 moles of sodium hydroxide (NaOH) per 1 mole in an aqueous solution to generate copper oxide and copper hydroxide in the solution; and
1 to 12 mol of hydrazine (N ₂ H ₄ ) per 1 mol of copper chloride (CuCl ₂ ) was added to the produced copper oxide and copper hydroxide to reduce to nonionic copper nanoparticles to prepare a colloidal aqueous solution containing copper nanoparticles to do;
A method for producing a liquid fertilizer composition, characterized in that it is prepared including