Liquid Fertilizer Additive Formulations for Controlled Nitrogen Release
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Solution Overview
Problem
Existing fertilizer technologies suffer from low efficiency and environmental impact due to rapid dissolution of nitrogen, phosphorous, and potassium components, leading to nutrient loss and pollution, with current coating methods being costly, complex, and unsuitable for small-scale applications.
Innovation Solution
Development of liquid formulations containing hydrophobic, biodegradable polymers dispersed in a Non-aqueous Organic Solvent Delivery System (NOSDS) to coat fertilizer granules, using aldehyde reactions with cyano-containing nitrification inhibitors, ensuring the cyano-group is conserved and allowing for simple application with mixers, blenders, and tumblers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If fertilizer components are made highly water-soluble for rapid nutrient availability, then plant uptake speed is improved, but nutrient loss through leaching and environmental pollution increases
Solution Approach 1:
The patent applies preliminary action by pre-coating fertilizer granules with hydrophobic polymer formulations before application. The coating is applied in advance to create a protective barrier that controls subsequent water dissolution, allowing the fertilizer to release nutrients at a controlled rate rather than all at once, thereby preventing leaching while maintaining availability.
Solution Approach 2:
The patent uses flexible shells and thin films by applying a hydrophobic polymer coating film on the surface of fertilizer granules. This thin film acts as a selective barrier that allows controlled water penetration and nutrient release, flexibly regulating the dissolution rate to balance rapid availability with reduced leaching loss.
2Object-generated harmful factors
If complex coating methods are used to improve fertilizer efficiency and reduce leaching, then nutrient retention is improved, but manufacturing cost and process complexity increase
Solution Approach 1:
The patent merges multiple functions into a single coating formulation that combines hydrophobic polymers, nitrification inhibitors, and biostimulants in one liquid composition. This unified formulation can be applied in a single coating step using simple equipment, eliminating the need for multiple separate coating processes and reducing overall manufacturing complexity while maintaining effective nutrient retention.
Solution Approach 2:
The patent applies self-service by using formulations that require minimal processing equipment and can be applied using existing simple machinery like mixers, blenders, and tumblers. The coating system is designed to be self-applicable without requiring specialized coating devices or complex process control, thereby reducing manufacturing complexity while achieving effective leaching prevention.
3Manufacturing precision
If specialized coating equipment is used to apply coatings uniformly on fertilizer granules, then coating quality and nutrient release control are improved, but manufacturing cost and scalability for small-scale applications worsen
Solution Approach 1:
The patent achieves universality by developing a coating formulation and application method that works effectively across multiple scales and equipment types. The same liquid formulation can be applied using simple mixers for small-scale operations or larger tumblers for commercial production, eliminating the need for specialized coating equipment while maintaining consistent coating quality and nutrient release control across different manufacturing settings.
4Object-generated harmful factors
If hydrophobic coatings are applied to reduce water dissolution, then nutrient leaching is reduced, but the cost of coating materials and application processes increases
Solution Approach 1:
The patent uses composite materials by combining hydrophobic polymers with functional additives like nitrification inhibitors and biostimulants in a single coating formulation. This composite approach allows the use of lower quantities of coating material while achieving multiple benefits simultaneously - reducing leaching, preventing nitrification, and providing biostimulation - thereby reducing overall material cost compared to applying separate coatings for each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances fertilizer efficiency by impeding water dissolution, reducing nutrient loss, and minimizing environmental pollution, while being cost-effective and adaptable for various application techniques, including coating granules and dispersing into aqueous nitrogen sources.
Implementation Method 1
This film can impede the dissolution of fertilizer components by water improving fertilizer efficiency
Implementation Method 2
the reaction of aldehyde(s) with cyano-containing nitrification inhibitors that have one or more aldehyde reactive groups
Data Source
AI summary
Disclosed are compositions and methods of making a liquid fertilizer additive solution of polymeric and/or oligomeric heterocyclic nitrogen containing nitrification inhibitors comprising a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with heterocyclic nitrogen containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols. Fertilizer compositions are disclosed comprising of a) one or more polymeric and/or oligormeric heterocyclic nitrogen containing nitrification inhibitors adducts from the reaction of aldehyde(s) with heterocyclic nitrogen containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols b) a non-aqueous organo solvent delivery system (NOSDS), and c) one or more nitrogen sources.