Humic acid reinforced bentonite fertilizer

Combining bentonite with humic acid and other nutrients addresses the inefficiencies of traditional fertilizers by enhancing water retention and nutrient availability, leading to higher crop yields and reduced environmental harm.

WO2025196475A1PCT designated stage Publication Date: 2025-09-25NOORDAD BENYAMIN +3
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Patent Information

Application Number
PCT/IB2024/052602
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-03-18
Publication Date
2025-09-25

AI Technical Summary

Technical Problem

Existing bentonite fertilizer production is energy-intensive, costly, labor-intensive, and environmentally harmful, and traditional methods require frequent irrigation, exacerbating water scarcity issues in agriculture.

Method used

A method combining bentonite with humic acid, fulvic acid, and other nutrients to create a fertilizer that enhances water retention and nutrient availability, reducing energy consumption and production costs while promoting sustainable water use and microbial activity.

Benefits of technology

The fertilizer improves soil fertility, increases crop yields by 15-50%, reduces irrigation needs, and minimizes environmental impact, offering a balanced nutrient profile for improved crop quality and growth.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a method for producing bentonite fertilizer reinforced with humic acid, which aims to reduce energy consumption, equipment and product costs, and labor while minimizing environmental damage. The method involves incorporating bentonite, fulvic acid or humic acid, naphthylacetic acid, coal ash, pulverized coal, starch, microbial agents, and various nutrients into the fertilizer. This invention addresses the challenges of water scarcity and global droughts, which negatively impact crop production. By using a combination of bentonite, humic acid, and other nutrients, the invention allows for continuous hydration of plant roots and retention of necessary solutes in the soil. The result is increased crop quality and production by 15 to 50 percent. This novel bentonite-humic acid fertilizer offers significant industrial applications across agricultural, soil remediation and land rehabilitation, and horticulture and floriculture sectors.
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Description

Humic acid-reinforced bentonite fertilizer

[0001] The current invention is related to an emerging technology of humic acid-reinforced bentonite fertilizer production to reduce consumed energy drastically, the cost of equipment and products, and labor without damage to the environment.

[0002] The invention belongs to the technical field of fertilizers, and particularly relates to a modified bentonite fertilizer and a preparation method thereof.

[0003] The production of humic acid-reinforced bentonite fertilizer involves combining high-quality bentonite with humic acid, resulting in a potent and efficient fertilizer product. Bentonite is known for its ability to retain water and improve soil structure, while humic acid enhances nutrient availability, promotes root development, and improves overall plant health. The combination of these two components provides growers with a powerful fertilizer option that enhances soil fertility and plant growth. Commercialized Articles:

[0004] 1. Humic Acid-Reinforced Bentonite Granules: These granules combine bentonite and humic acid in a specific ratio, resulting in easy-to-use fertilizer pellets that can be evenly distributed across fields or directly applied to plants. The granules release nutrients and moisture gradually, ensuring a sustained and controlled nutrient supply to the plants. These granules are well-suited for agricultural applications, and commercial plant nurseries.

[0005] 2. Humic Acid-Reinforced Bentonite Liquid Concentrate: This concentrated liquid formulation consists of bentonite clay and humic acid suspended in water. The liquid concentrate offers flexibility in application methods, allowing growers to apply it via foliar spraying or through irrigation systems. The liquid concentrate permeates the soil quickly, providing immediate access to essential nutrients and promoting faster plant absorption. This product is commonly used in horticultural practices, greenhouse cultivation, and hydroponics.

[0006] In the category of fertilizers that contain bentonite and humic acid, five products from 5 different companies have been introduced, including Sainik, Jimmy, O2H20 LLP, Aryan Crop Care, and Black Earth Humic LP.

[0007] Patent document CN105985191A relates to a modified bentonite adsorption minor element fertilizer and its preparation method. The fertilizer is made using sodium bentonite, carbon powder, starch, epoxy resin, cement, gypsum powder, zinc chloride, ammonium molybdate, sodium selenite, chitin, ferrous sulfate, shell powder, weathering coal powder, amino acid chelated manganese, boric acid, and water. The granules are mixed with a solution containing the remaining components, placed in an ultrasonic cleaner to fill the micropores, dried, and then mixed with shell powder and weathering coal powder to form a paste, which is granulated and dried. This invention aims to improve the adsorption performance of modified bentonite in the fertilizer to enhance its effectiveness.

[0008] A saline-alkaline bentonite slow-release fertilizer and its preparation method described in patent document CN108083906A consists of bentonite, decomposed straw powder, sulfuric acid solution, urea, potassium dihydrogen phosphate, potassium nitrate, humic acid, and methyl acrylate. The addition of methyl acrylate to the sulfuric acid solution creates an acidic emulsion, which enhances the adhesion of the fertilizer to the soil. This helps to reduce soil pH, improve soil structure, and enhance water and fertilizer retention capacity. The addition of humic acid reduces the salt content in the soil. Overall, this slow-release fertilizer has higher nutrient utilization, lower salt and alkali content, and improved soil structure.

[0009] The patent document CN106831243A provides a highly absorbent resin-reinforced biomass carbon-based slow release fertilizer and a method for preparing it. The fertilizer exhibits good sustained release performance and high water absorption and retention. The fertilizer is prepared using a combination of raw materials including rice straw, urea, kaolin, itaconic acid, acrylamide, cerium ammonium nitrate, attapulgite soil, N, N-diisopropylacrylamide, bentonite, humic acid, zeolite, Bacillus, NaOH solution, and distilled water. The resulting product is a slow release fertilizer that is enhanced by the inclusion of highly absorbent resin and exhibits improved water absorption and retention capabilities. Additionally, the fertilizer also has the ability to improve soil structure and fertility, regulate pH, and increase crop yields.

[0010] Also, another patent document CN108516894A provides a composite melon and fruit organic fertilizer that aims to overcome the deficiencies observed in traditional fertilizers. The fertilizer is made up of a combination of various raw materials including straw, kelp residue, sodium carboxymethyl cellulose, vinegar grains, bentonite, humic acid, zeolite powder, reinforced bone grass, strain powder, sodium selenite, and metalaxyl, among others. The fertilizer comprises 90 parts of straw, 15 parts of kelp residue, 12 parts of sodium carboxymethyl cellulose, 9 parts of vinegar grains, 3 parts of bentonite, 15 parts of humic acid, 6 parts of zeolite powder, 7 parts of reinforced bone grass, 4 parts of strain powder, 3 parts of sodium selenite, and 3 parts of metalaxyl. The fertilizer is prepared by mixing and stirring the raw materials for two weeks, adding metalaxyl, crushing the mixture through a 100 mesh sieve, and finally granulating it. The invention has shown positive effects in promoting the growth and development of melon and fruit crops, increasing their yield, and enhancing their resistance to diseases and insects.

[0011] The invention relates to a method for producing bentonite fertilizer reinforced with humic acid, which aims to reduce energy consumption, equipment and product costs, and labor while minimizing environmental damage. The method involves incorporating bentonite, fulvic acid or humic acid, naphthylacetic acid, coal ash, pulverized coal, starch, microbial agents, and various nutrients into the fertilizer. The primary challenge addressed by this invention is water scarcity, a growing concern affecting global agriculture. Traditional fertilizers often require frequent irrigation, placing a strain on water resources. This invention offers a sustainable solution by promoting efficient water use within the soil. By using a combination of bentonite, humic acid, and other nutrients, the invention allows for continuous hydration of plant roots and retention of necessary solutes in the soil. The result is increased crop quality and production by 15 to 50 percent. By combining these elements with a balanced nutrient profile, the invention creates a fertilizer that optimizes water utilization and fosters a thriving rhizosphere (the zone around plant roots) for superior crop growth.

[0012] The existing technical problems are as follows:

[0013] Water shortages and global droughts, coupled with the annual increase in global temperature, have resulted in irreversible effects on the Earth's climate cycle. These factors have led to negative impacts on agriculture, resulting in reduced per capita wheat production and other crops. Most plants require long-term irrigation to enhance crop quality. However, farmers currently irrigate their plants for only 15 to 20 days, which negatively affects the crop's quality.

[0014] Traditional methods of producing bentonite fertilizer involve energy-intensive processes such as grinding, drying, and granulating. These processes require costly machinery and equipment. Additionally, conventional fertilizer production methods often involve labor-intensive steps like grinding, mixing, and granulating. This not only increases production costs but also poses environmental risks, including the release of greenhouse gases and the depletion of natural resources.

[0015] In addition to these challenges, the irreversible effects on the Earth's climate cycle, including the annual increase in global temperature, continue to have adverse impacts on agriculture.

[0016] This alleged plan is intended with these main objectives. Significantly decrease energy consumption by implementing a more efficient approach. Decrease the overall cost of equipment and final products, ensuring that they are affordable for farmers. Streamline the production process to reduce the dependence on manual labor and increase efficiency. Develop a method that minimizes environmental harm, potentially through the utilization of organic and eco-friendly materials. Improve water retention in the soil and enhance crop yields even in water-stressed conditions.

[0017] The best solution for optimal use of water and reducing the irrigation interval to plants to increase crop quality is to use effective methods for water retention in the soil and continuous watering of the plant roots. Using a mixture of bentonite, humic acid, and other nutrients leads to continuous hydration of the plant roots. Bentonite retains the solutes needed by the plant in its structure and provides the plant with a continuous interval. Depending on the plant type, each plant's required salts can be loaded into the bentonite structure. Humic acid-reinforced bentonite fertilizer has good effects on the activity effect action of microbial, the long residual action of organic fertilizer, the quick results action of inorganic fertilization, and the good effect action of microelement fertilizer. Because the product contains the demanded element of crops with overall balance nutrition, therefore, the crops' average growth is advanced, and soil fertility is raised. The invention provides a preparation method for biology organic-inorganic multivariant environmental protection compound fertilizers, which comprises bentonite This invention relates to a method for preparing a biology organic inorganic multivariant environmental protection compound fertilizer. This fertilizer composition comprises bentonite, fulvic acid (water soluble), humic acid (soluble in base) and / or humins (insoluble), a plant growth regulator, a source of additional nutrients, a bulking agent, a wetting agent, a microbial inoculant, a source of chitin, a plant nutrient enhancer, micronutrients, an amino acid, an oxidizing agent, a B vitamin, a boron source, a nitrogen source, and water. Additionally, the invention incorporates the use of uniquely modified porous stone powder particles. The method for preparing the fertilizer composition comprises the following steps:

[0018] S1: Preparation of Dry Ingredients:Bentonite Clay: A desired amount of bentonite clay is obtained and optionally subjected to grinding and purification processes to achieve a specific particle size distribution.Humic Substances: Fulvic acid (water-soluble), humic acid (soluble in base), and / or humins (insoluble) are obtained from a suitable source like leonardite or compost. The desired type and amount of humic substance is chosen based on the targeted benefits for the fertilizer.Plant Growth Regulator: Naphthylacetic acid is included in a predetermined amount to promote plant growth.Additional Nutrients: Coal ash, pulverized coal, or other suitable sources are used to provide additional macro and micronutrients to the fertilizer composition. The specific source and amount are chosen based on the desired nutrient profile.Bulking Agent: Starch is used as a bulking agent to adjust the final volume and consistency of the fertilizer. The amount of starch can be adjusted to achieve the desired granulation or pelleting properties.Wetting Agent: PERSILA A70 or a similar wetting agent is added to improve the wetting and dispersion characteristics of the fertilizer in water.Microbial Inoculant: EM microbial agent is incorporated to enhance soil microbial activity and promote plant health.Chitin Source: Chitin is included to stimulate beneficial soil microbes and improve plant disease resistance. The chitin source can be derived from crustacean shells or fungal cell walls.Plant Nutrient Enhancer: Nicotinic acid is used to improve nutrient uptake and utilization by plants.Micronutrients: Iron (Fe), Copper (Cu), and other essential micronutrients are added in suitable forms and quantities to address potential plant deficiencies.Amino Acid: Glycine is included as an additional source of readily available nitrogen for plant growth.Oxidizing Agent: Potassium permanganate is optionally added to promote soil aeration and potentially enhance nutrient availability.B Vitamin: Vitamin B1 is included to support plant growth and stress tolerance.Boron Source: Boric acid is added to provide boron, a crucial micronutrient for many plant functions.Nitrogen Source: Urea or another suitable nitrogen source is incorporated to provide readily available nitrogen for plant growth.Modified Porous Stone Powder: A unique feature of this invention is the inclusion of a predetermined amount of specially modified porous stone powder particles. The specific properties of the modified powder, such as porosity and surface area, can be tailored to enhance nutrient adsorption and slow release characteristics of the fertilizer.

[0019] S2: Mixing: All the dry ingredients listed above are thoroughly mixed in a suitable blender or mixer to achieve a homogenous blend. The mixing time and intensity can be adjusted based on the desired consistency and particle size distribution of the final product.

[0020] S3: Granulation or Pelleting (Optional): The dry blend can be optionally granulated or pelletized using appropriate equipment and techniques. This step improves handling characteristics and allows for controlled release of nutrients.

[0021] S4: Water Addition and Adjustment: Water is gradually added to the dry blend or granules / pellets while continuing mixing to achieve a desired moisture content. The optimal moisture content will depend on the chosen method of application (e.g., spreading, spraying) and the desired shelf life of the final product.

[0022] S5: Drying and Packaging: The final fertilizer composition is then dried to a suitable moisture level using appropriate drying methods (e.g., tray drying, rotary drying). The dried fertilizer is then packaged in suitable containers for storage and distribution.

[0023] Using this model of fertilizers, in addition to reducing water losses, increasing plant productivity, and increasing crops, prevents the inevitable effects of chemical fertilizers on human health. So, the most important advantages of this fertilizer are that it is non-harmful for the human body and can be regarded as an organic fertilizer. Other benefits of this fertilizer:

[0024] - Reduce salinity and drought stress

[0025] - Increase plant resistance to disease and cold

[0026] - Balance soil and plant nutrients

[0027] - Increase soil buffering properties for better absorption

[0028] - Save chemical fertilizer consumption and reduce the current costs of farms and gardens

[0029] - Increasing the amount of fruit and fruit Brix index as a result of growing corps and quality

[0030] - Stimulating enzymatic activity and photosynthesis, maintaining transpiration and increasing cell membrane permeability, balancing soil acidity, improving soil structure

[0031] - Bentonite-induced soil quality improvements to enhance the establishment of agricultural field crops such as maize, millet, and squash.

[0032] - Humic acid is a chemical constituent of soil organic matter.

[0033] - This product has a manorial effect and strong aftereffect, which belongs to disposable fertilize, thereby saving fertilizer, labor, cost, energy, and lowering power.Fig.1

[0034] is a flow chart showing the production process of invention. starting materials such as Bentonite and Humic acid and / or Addetive and water due to this process result in Fertilizer.

[0035] S1: Preparation of Dry IngredientsEquipment: This step typically doesn't require specific equipment for simple mixing. However, if grinding or purification of bentonite clay is needed:Grinding / Purification Equipment: Hammer Mill, Ball MillS2: MixingEquipment: Blender or Mixer (High Shear Mixer preferred)S3: Granulation or Pelleting (Optional)Granulation:Rotary Drum GranulatorPan GranulatorFluidized Bed GranulatorPelleting:Pellet Mill (uses pressure rollers)Extruder (uses extrusion dies)S4: Water Addition and AdjustmentEquipment: Mixing tank or blender (same equipment from S2: Mixing) can be used with water addition capabilities.S5: Drying and PackagingDrying:Tray DryerRotary DryerPackaging: Packaging line with filling equipment (not specific equipment, depends on chosen container type)Examples

[0036] In the production of a bentonite-humic acid fertilizer specifically formulated to enhance water retention in row crops like corn and soybeans. All dry ingredients, except for modified porous stone powder and water, were thoroughly mixed in a blender for 30 minutes to achieve a homogenous blend. The modified porous stone powder is then added and mixed for an additional 10 minutes to ensure even distribution. Water is gradually added while continuing to mix until a desired moisture content of 20% is achieved. This moisture content is suitable for granulation and storage. The wet mixture is then granulated using a rotary drum granulator to form uniform granules with a diameter of 2-3 mm. The granules are dried in a tray dryer at 50°C for 24 hours to achieve a final moisture content of 10%. The dried granules are cooled and packaged in moisture-proof bags for storage and distribution.

[0037] This novel bentonite-humic acid fertilizer offers significant industrial applications across various sectors, particularly those facing challenges related to water scarcity and sustainable agriculture:

[0038] Agricultural sector:Crop farming: this fertilizer directly addresses the agricultural industry's need for water-efficient solutions. By improving soil water retention and promoting healthy root systems, it can benefit a wide range of crops, including grains, fruits, vegetables, and cash crops. Farmers can potentially achieve higher yields while reducing irrigation requirements.Organic farming: the organic composition of the fertilizer aligns perfectly with the principles of organic farming. It provides essential nutrients for plant growth without introducing harmful chemicals into the soil ecosystem. This caters to the growing consumer demand for organic produce.Greenhouses and nurseries: controlled environments like greenhouses and nurseries require precise water management and soil conditioning. This fertilizer excels in these settings by promoting efficient water utilization and fostering healthy root development, ultimately leading to improved plant quality and production within these facilities.

[0039] Soil remediation and land rehabilitation:Mined lands and construction sites: industries involved in land restoration can leverage this fertilizer to accelerate the recovery of degraded soils. The improved water retention and enhanced microbial activity facilitated by the fertilizer can expedite vegetation establishment, leading to faster land rehabilitation and ecosystem restoration.

[0040] Horticulture and floriculture:Nurseries and flower growers: by promoting healthy root systems and optimizing water use, this fertilizer can significantly benefit the horticulture and floriculture industries. Nurseries and flower growers can expect improved plant health, enhanced root development, and overall superior crop quality for their ornamental plants, flowering shrubs, and indoor potted varieties.

Claims

A method for preparing a biology organic inorganic multivariant environmental protection compound fertilizer composition, comprising the steps of:a) obtaining bentonite clay; b) obtaining humic substances selected from the group consisting of fulvic acid, humic acid, and humins; c) obtaining a plant growth regulator; d) obtaining a source of additional nutrients; e) obtaining a bulking agent; f) obtaining a wetting agent; g) obtaining a microbial inoculant; h) obtaining a source of chitin; i) obtaining a plant nutrient enhancer; j) obtaining micronutrients; k) obtaining an amino acid; l) obtaining an oxidizing agent (optional); m) obtaining a B vitamin; n) obtaining a boron source; o) obtaining a nitrogen source; p) obtaining modified porous stone powder particles; and q) adding water;wherein the steps further comprise:optionally grinding and purifying the bentonite clay;mixing all the obtained ingredients in predetermined amounts to achieve a homogenous blend;optionally granulating or pelleting the blend;adjusting the moisture content of the blend or granules / pellets with water;drying the composition to a desired moisture level; andpackaging the dried composition.The method of claim 1, wherein the plant growth regulator is naphthylacetic acid.The method of claim 1, wherein the source of additional nutrients is selected from the group consisting of coal ash and pulverized coal.The method of claim 1, wherein the bulking agent is starch.The method of claim 1, wherein the wetting agent is PERSILA A70.The method of claim 1, wherein the microbial inoculant is an EM microbial agent.The method of claim 1, wherein the source of chitin is derived from crustacean shells or fungal cell walls.The method of claim 1, wherein the plant nutrient enhancer is nicotinic acid.The method of claim 1, wherein the micronutrients include iron and copper.The method of claim 1, wherein the amino acid is glycine.The method of claim 1, wherein the B vitamin is vitamin B1.The method of claim 1, wherein the nitrogen source is urea.A biology organic inorganic multivariant environmental protection compound fertilizer composition prepared by the method of claim 1.

Citation Information

Patent Citations

  • Modified-bentonite-adsorption minor element fertilizer and preparation method thereof

    CN105985191A

  • Biomass carbon based slow release fertilizer enhanced by high water absorbing resin and preparation method thereof

    CN106831243A

  • Use of bentonite for improving plant growth-related traits

    US20170156337A1