Coated Fertilizer Granule for Nutrient Retention

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Solution Overview

Problem

Conventional fertilizers face inefficiencies in nutrient delivery due to segregation, volatilization, denitrification, leaching, and immobilization, leading to reduced crop yields and environmental concerns such as eutrophication, with only about 60% or less of macronutrients being efficiently delivered to plants.

Innovation Solution

A fertilizer granule is coated with a composition comprising complexing agents and coating agents like fatty acids, fatty acid esters, or mineral oils, which reduces segregation, volatilization, and immobilization, ensuring even nutrient distribution and increased availability for plant uptake.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If granular fertilizers are applied to supply nutrients to plants, then plant growth requirements are addressed, but nutrient delivery efficiency is reduced due to segregation, volatilization, leaching, and immobilization

Engineering Contradiction:

Improvenutrient delivery efficiencyVSAvoidnutrient loss

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

A coating composition is applied as an intermediary layer between the fertilizer granule and the environment. This coating includes complexing agents that bind nutrients and coating agents that control release, serving as a mediator that prevents direct exposure to harmful environmental factors while enabling controlled nutrient delivery to plants

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The fertilizer system is transformed from a simple granule into a composite structure with multiple functional layers. The coating composition combines complexing agents, coating agents, and potentially other functional materials to create a multi-component system that addresses multiple problems (segregation, volatilization, leaching, immobilization) simultaneously

Inventive Principle:

Principle #40Composite materials

2Ease of operation

If fertilizers are processed into granule form for distribution, then ease of application is improved, but segregation and dusting problems occur when multiple nutrients are blended

Engineering Contradiction:

Improveease of applicationVSAvoidnutrient distribution uniformity

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

Multiple nutrients that would otherwise segregate when blended are merged into a single integrated granule structure. The coating composition binds these different nutrients together, preventing segregation during handling and application while maintaining uniform nutrient distribution throughout the granule

Inventive Principle:

Principle #5Merging (Combining)

3Speed

If fertilizers are made water-soluble for quick release, then plant root uptake speed is improved, but nutrient loss through leaching and run-off increases

Engineering Contradiction:

Improvenutrient release speedVSAvoidnutrient loss through leaching

Core Design Contradiction:

SpeedVSLoss of substance

Solution Approach 1:

The nutrient release mechanism is made dynamic and adaptive. The coating composition allows quick release when water is present (enabling rapid plant uptake) but prevents leaching when excess water occurs. The system dynamically adjusts between rapid dissolution for plant availability and controlled release to prevent environmental loss

Inventive Principle:

Principle #15Dynamics

4Productivity

If conventional fertilizers are applied to meet crop nutrient demands, then crop growth is supported, but environmental concerns such as eutrophication and hypoxia arise

Engineering Contradiction:

Improvecrop nutrient supplyVSAvoidenvironmental pollution

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The coating composition converts potentially harmful rapid dissolution into a beneficial controlled release mechanism. What would normally cause quick nutrient release and subsequent leaching pollution is transformed into a controlled process that delivers nutrients to plants efficiently while preventing environmental contamination through the intermediary coating layer

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 coated granule achieves significant increases in nutrient retention and uptake, with up to 95% more extractable phosphorus and reduced ammonia volatility, enhancing crop yields while minimizing environmental impact.

Implementation Method 1

A fertilizer granule is coated with a composition comprising complexing agents and coating agents

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 2

The coating comprises one or more complexing agents and a coating agent

Methodology Applied

Scientific EffectComplexation: Chemical Bonding

Data Source

PatentUS9938202B2Coating for improved granular fertilizer efficiency

Publication Date: 2018.04.10 LAND VIEW INC

AI summary

A fertilizer granule having a coating on at least of portion of a surface of the granule. The coating is made of one or more complexing agents and a coating agent of one or more of a fatty acid, fatty acid ester, organic oil mineral oil or combinations thereof. The coating may optionally include a surfactant and micronutrients. The coated fertilizer granules demonstrates a noted improvement in the utilization of the nutrients of plants and crops.