Membrane Chromatography Media for Metal and Chiral Separation
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Solution Overview
Problem
Current separation technologies, such as resin-based chromatography, face challenges with binding capacity at high flow rates, leading to low productivity and potential target molecule degradation, especially in chiral separations.
Innovation Solution
The development of a separation media comprising a support substrate with immobilized separation ligands, specifically designed for membrane chromatography, which includes affinity groups capable of binding metals and enantiomers of chiral molecules, enhancing separation efficiency and specificity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resin-based chromatography is used for metal and chiral molecule separation, then separation capability is achieved, but binding capacity decreases at high flow rates leading to low productivity
Solution Approach 1:
The patent employs thin film membranes as the support substrate for separation ligands, replacing traditional bulk resin beads. This thin film structure provides a large surface area-to-volume ratio, enabling high binding capacity while maintaining excellent flow-through characteristics. The membrane format allows rapid mass transfer kinetics, supporting high flow rates without sacrificing binding capacity, thus simultaneously improving productivity and maintaining reliability.
Solution Approach 2:
The patent utilizes porous membrane structures with controlled pore sizes and distributions to facilitate rapid diffusion of target molecules through the separation media. The porous architecture provides both mechanical support and transport pathways, enabling high flow rates while maintaining sufficient residence time for binding interactions, thereby resolving the contradiction between productivity and binding capacity.
2Reliability
If traditional resin-based chromatography is used, then separation is performed, but target molecule degradation occurs due to prolonged contact time
Solution Approach 1:
The thin film membrane format dramatically reduces the diffusion path length for target molecules, enabling rapid equilibration and separation in minutes rather than hours. This short contact time minimizes degradation of sensitive target molecules while maintaining high separation efficiency, thus protecting molecule stability without sacrificing productivity.
Solution Approach 2:
The patent enables rapid flow rates through the membrane structure, allowing the process to 'rush through' the separation quickly. This fast flow regime reduces the time target molecules are exposed to potentially degrading conditions while still achieving complete separation, thereby preserving target molecule integrity and improving productivity simultaneously.
3Speed
If high flow rates are used to improve productivity, then separation speed increases, but binding capacity decreases in resin-based systems
Solution Approach 1:
The membrane format with its large surface area and thin structure allows high flow rates to pass through while maintaining sufficient binding sites accessible to target molecules. The geometry enables simultaneous high-speed flow and effective binding, decoupling the trade-off that plagues traditional resin systems.
Solution Approach 2:
The patent transitions from a three-dimensional resin bead structure to a two-dimensional membrane structure. This dimensional change provides a continuous surface for binding interactions, eliminating the internal diffusion limitations of beads. The 2D format allows rapid flow parallel to the membrane surface while maintaining consistent binding capacity across the entire flow profile, enabling high speed without sacrificing reliability.
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 proposed separation media effectively isolates metals and enantiomers, improving separation efficiency and productivity while minimizing target molecule degradation, even at higher flow rates compared to traditional resin-based methods.
Implementation Method 1
The plurality of separation ligands includes an affinity group, Z. The affinity group is capable of binding a metal, a compound that includes a metal, an enantiomer of a chiral molecule, or any combination thereof
Implementation Method 2
The affinity group comprises a crown ether, a dithiocarbamate, ethylenediaminetetraacetic acid, a chiral biological molecule, a chiral polymer, a helical polymer, a macrocyclic antibiotic, or any combination thereof
Data Source
AI summary
Separation media and separation devices containing the same are disclosed. Separation media includes a support substrate and a plurality of separation ligands. The separation ligands include an affinity group capable of binding a metal, capable of binding an enantiomer of a chiral molecule, or both. Methods of using the separation media are also disclosed.