Silver Salt Purification of Polyunsaturated Fatty Acids
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Solution Overview
Problem
The existing silver complex-forming technique for purifying polyunsaturated fatty acid derivatives is inefficient due to the rapid deterioration of silver salts, leading to increased purification costs and impurities in the final product, as it requires frequent preparation of new silver salt solutions.
Innovation Solution
A method involving the recycling of silver salt aqueous solutions by adjusting the free fatty acid content to 0.2 meq or less per gram of silver, achieved through contact with adsorbents, allowing for repeated use and maintaining the quality of polyunsaturated fatty acid derivatives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a silver salt aqueous solution is reused for purification, then purification cost is reduced, but the silver salt deteriorates and impurities mix into the product
Solution Approach 1:
The patent applies preliminary action by adjusting the free fatty acid content of the silver salt aqueous solution to 0.2 meq/g or less before reuse. This pre-treatment step ensures the solution is in optimal condition for purification, preventing deterioration and maintaining product quality across multiple reuse cycles
Solution Approach 2:
The patent changes the critical parameter of free fatty acid content to a specific range (0.2 meq/g or less) to resolve the contradiction. By controlling this parameter, the silver salt solution maintains both its purification effectiveness and stability, allowing cost-effective reuse without compromising product quality
2Reliability
If a new silver salt aqueous solution is prepared for each purification process, then product quality is maintained, but purification cost significantly increases
Solution Approach 1:
The patent applies discarding and recovering by extending the usable life of the silver salt aqueous solution through multiple purification cycles. By maintaining free fatty acid content at 0.2 meq/g or less, the solution can be recovered and reused many times, reducing the frequency of preparing new solutions while maintaining consistent product quality
3Ease of operation
If the free fatty acid content in silver salt aqueous solution is not controlled, then recycling is simpler, but the silver salt deteriorates rapidly and requires frequent replacement
Solution Approach 1:
The patent applies feedback by establishing a control mechanism where the free fatty acid content is monitored and adjusted to maintain levels at 0.2 meq/g or less. This feedback loop ensures the silver salt solution remains stable and reusable, extending its lifespan while maintaining a straightforward recycling 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
This method enables the cost-effective recycling of silver salt solutions, ensuring the production of high-quality polyunsaturated fatty acid derivatives with improved recycling efficiency and reduced impurities.
Implementation Method 1
The silver complex-forming technique utilizes a property in which a polyunsaturated fatty acid and derivatives thereof become water-soluble as a result of forming a complex with a silver ion
Implementation Method 2
the free fatty acid content is adjusted to 0.2 meq or less per gram of silver by contacting the silver salt aqueous solution with an adsorbent
Data Source
AI summary
A method of obtaining a polyunsaturated fatty acid derivative comprises contacting a mixture of fatty acid derivatives with a silver salt aqueous solution, and adjusting the free fatty acid content in the silver salt aqueous solution 0.2 meq or less per gram of silver when repeatedly using the silver salt aqueous solution. A polyunsaturated fatty acid derivative having high purity and excellent quality can thus be economically obtained.