Macroalgae Clay Intercalation via Shear Mixing
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Solution Overview
Problem
Current methods for preparing intercalated and exfoliated organophilic clays are environmentally unfriendly, costly, complex, and inefficient, often leaving residual chemical agents and having slow sorption rates, which limits their application in industries like fertilizer and animal feed production.
Innovation Solution
A process involving the mixing of macroalgae with clay under shear, followed by drying under vacuum, to create an intercalated and exfoliated organophilic clay without chemical intermediates, achieving a higher interlayer spacing and increased adsorption capacity for complex organic compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If chemical treatment methods are used to prepare intercalated organophilic clay, then the organophilic character and interfoliar space are improved, but environmental pollution and residual chemical agents increase
Solution Approach 1:
The invention extracts and eliminates harmful chemical agents and solvents from the treatment process. Instead of using synthetic organic molecules and chemical reaction agents, the method uses only water and natural macroalgae, extracting the beneficial intercalation function while removing the polluting components entirely.
Solution Approach 2:
The invention replaces expensive, persistent chemical agents with inexpensive, biodegradable macroalgae that can be easily disposed of after use. The macroalgae serve as a temporary intercalating agent that fulfills its function and then can be removed without environmental consequence.
2Quantity of substance
If chemical treatment methods are used to prepare intercalated organophilic clay, then the interfoliar space is increased, but the treatment cost and complexity increase
Solution Approach 1:
The invention extracts only the essential function of chemical treatment (increasing interfoliar space) while removing the complex chemical procedures. The method keeps only the mixing and drying steps, eliminating all chemical reaction stages, solvent removal procedures, and purification processes.
Solution Approach 2:
Instead of using complex chemical methods to achieve simple intercalation, the invention inverts the approach by using simple physical mixing of natural materials that spontaneously achieve the desired interfoliar expansion through natural macroalgae components.
3Speed
If conventional mixing methods are used to prepare intercalated clay, then the mixing speed is improved, but the sorption rate of organic cations remains slow
Solution Approach 1:
The invention changes the physical parameters of the mixing process by applying shear forces through specific mixing apparatus. This mechanical action disrupts the clay structure and creates channels that significantly accelerate the sorption rate of organic cations while maintaining efficient mixing speed.
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
This method reduces costs, simplifies the process, and produces an effective, environmentally friendly intercalated and exfoliated organophilic clay suitable for various applications, including fertilizers and animal feed, with enhanced adsorption capabilities.
Implementation Method 1
organophilic clays treated with organic components, in which organic cations have been adsorbed in the interfoliar space... To obtain sufficient interfoliar space to allow effective exfoliation of an intercalated organic clay
Implementation Method 2
drying under vacuum, to create an intercalated and exfoliated organophilic clay
Implementation Method 3
mixing of macroalgae with clay under shear... exfoliated form, or in other words delaminated, where the layers are separated and dispersed
Data Source
Figure 1~2
AI summary
Preparing intercalated and/or exfoliated organophilic clay comprises: producing microalgae comprising 0.2-20%, preferably 6-20% of dry material; grinding the macroalgae; and shear mixing the macroalgae with a mass of clay that is 0.25-1.6 times the mass of the macroalgae for 1 hour to permit the intercalation and/or exfoliation of the proper clay. An independent claim is included for an intercalated and/or exfoliated organophilic clay spacing sheet of 10Å , preferably 30Å and 10% of exfoliated platelets.