Humic Acid Extraction via pH Gradient and Molturation
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Solution Overview
Problem
Conventional methods for extracting humic acids from leonardites result in humic acids with limited metal ion complexation capacity, which hinders their effectiveness in improving nutrient absorption and plant growth.
Innovation Solution
A procedure involving selective activation and purification of humic acids through a pH gradient extraction process, including molturation to reduce particle size, initial extraction with potassium carbonate at pH 10, filtration, and a second extraction with a strong base at pH 12-13, followed by centrifugation, to enhance the functional groups' capacity for metal ion complexation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional extraction methods using basic medium are used, then humic acids can be obtained, but their metal ion complexation capacity is limited
Solution Approach 1:
The patent applies preliminary action by conducting a first molturation stage before extraction to activate the leonardite material and expose functional groups. This preliminary activation enhances the subsequent extraction efficiency and metal ion complexation capacity, resolving the contradiction by preparing the material in advance to achieve better performance without complicating the overall process
Solution Approach 2:
The patent changes physical parameters by reducing particle size through molturation and controlling pH gradients during extraction. These parameter changes increase the surface area and reactivity of humic acids, thereby improving metal ion complexation capacity while maintaining process feasibility through systematic parameter optimization
2Productivity
If particle size is reduced through molturation, then extraction efficiency and complexation capacity increase, but processing time and energy consumption increase
Solution Approach 1:
The patent applies partial action by performing molturation to a specific particle size range rather than reducing all particles to the minimum size. This selective size reduction achieves sufficient surface area for efficient extraction and complexation while avoiding excessive processing time and energy consumption associated with ultra-fine grinding
Solution Approach 2:
The patent ensures continuity by integrating molturation directly into the extraction workflow without separate intermediate steps. The activated particles are immediately subjected to pH gradient extraction, maintaining continuous useful action and minimizing idle time that would otherwise increase total processing duration
3Reliability
If pH gradient extraction is used, then selective purification and complexation capacity are improved, but process complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the extraction process into distinct pH stages: first extraction at pH 10-11, then adjustment to pH 12-13 for second extraction. This segmentation allows selective purification of different humic acid fractions with varying complexation capacities, improving overall purification quality while keeping each individual stage relatively simple and manageable
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
Significantly increases the complexation capacity of humic acids with metal ions such as iron, manganese, and zinc, leading to improved nutrient absorption and plant growth, with enhanced reactivity and reduced processing time compared to conventional methods.
Implementation Method 1
A procedure involving selective activation and purification of humic acids through a pH gradient extraction process, including molturation to reduce particle size, initial extraction with potassium carbonate at pH 10, filtration, and a second extraction with a strong base at pH 12-13
Implementation Method 2
followed by centrifugation, to enhance the functional groups' capacity for metal ion complexation
Implementation Method 3
initial extraction with potassium carbonate at pH 10, filtration
Data Source
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AI summary
The invention provides a procedure for obtaining humic acids extracted from leonardites which have greater capacity to form complexes with metal ions, said procedure including selective activation, extraction and purification that increases the capacity of the complex-forming functional groups present in humic acids to form complexes with said metal ions. The procedure of the invention essentially includes a first molturation stage in leonardite liquid and two extraction stages based on a basic pH gradient.