Hydrothermally Modified Potassium Fertilizer for Controlled Release
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Solution Overview
Problem
Conventional fertilizers, such as KCl, often lead to sudden soil saturation and excessive leaching, failing to provide sustained potassium release and residual effects beneficial for crop nutrition and soil health.
Innovation Solution
Development of hydrothermally modified materials that release potassium and other micronutrients in a controlled and extended manner, utilizing feedstocks like ultrapotassic syenite, CaO, and water, and incorporating processes that minimize waste and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional fertilizers like KCl are used, then immediate potassium availability is achieved, but sudden soil saturation and excessive leaching occur
Solution Approach 1:
The patent applies dynamics by transforming static potassium minerals into dynamically releasing materials through hydrothermal treatment. The process creates a material that adapts its potassium release rate to crop needs, transitioning from immediate release (KCl) to controlled sustained release, resolving the contradiction between speed and loss.
Solution Approach 2:
The invention changes physical and chemical parameters of potassium-bearing materials through hydrothermal treatment at elevated temperatures and pressures. This transforms the crystal structure and surface properties, enabling controlled potassium release that prevents both sudden saturation and excessive leaching, addressing the speed-loss contradiction.
2Duration of action of moving object
If controlled potassium release materials are developed, then sustained release and reduced leaching are achieved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-treating potassium-bearing materials through hydrothermal processing before field application. This advance treatment creates the controlled-release properties needed for sustained potassium release, eliminating the need for complex release mechanisms during field conditions while maintaining manufacturing feasibility.
Solution Approach 2:
The invention replaces complex mechanical release systems with chemical and physical transformations achieved through hydrothermal treatment. The controlled release is accomplished through inherent material property changes rather than mechanical structures, reducing manufacturing complexity while extending duration of action.
3Reliability
If hydrothermal processing is applied, then controlled release properties are achieved, but energy consumption and processing cost increase
Solution Approach 1:
The patent utilizes phase transitions during hydrothermal processing, where water exists in liquid and vapor phases at elevated temperatures and pressures. This phase transition behavior enables efficient heat transfer and material transformation, achieving reliable controlled release properties while managing energy consumption through the natural thermodynamics of the phase change process.
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 materials provide continuous potassium release, high residual effect, improved soil pH buffering, enhanced cation exchange capacity, and increased water holding capacity, while being environmentally friendly and cost-effective.
Implementation Method 1
exposing a first composition to water and conditions selected from heat and pressure, thereby forming a combination that comprises water and a second composition
Implementation Method 2
an amount of potassium released from the third composition is at least about two about times greater than an amount of potassium released from the first composition
Data Source
AI summary
The present disclosure, in various embodiments, discloses hydrothermal methods, hydrothermally modified materials and dried hydrothermally modified materials. Certain dried hydrothermally modified materials can readily releases ionic species such as alkali metal ions (K+, Na+), silicate salts, and alkaline earth metal ions (Mg2+, Ca2+). Some dried hydrothermally modified materials can readily release aluminum ions and/or silicon, such as in the form of soluble silicates. Such processes and materials are useful, for example in economically preparing potassium releasing fertilizers.