Triacylglycerol Purification via Continuous Regenerable Adsorbent
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Solution Overview
Problem
Conventional edible oil refining processes consume large amounts of fresh water and generate significant waste effluent and solid waste, with batch processing and the use of extensive filter media leading to environmental and economic inefficiencies.
Innovation Solution
A continuous regenerable adsorbent process using a powdered, granulated, or extruded adsorbent in columns for the purification of triacylglycerols, which reduces water usage and waste production by regenerating and reusing the adsorbent, eliminating the need for fresh water and minimizing solid waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional water washing and filtration methods are used to remove soaps and impurities from triacylglycerol, then purification effectiveness is improved, but water consumption increases and solid waste is generated
Solution Approach 1:
The spent adsorbent material is regenerated through a multi-step process involving extraction with non-polar solvent to recover adsorbed triacylglycerol, followed by treatment with polar solvent and acid to remove soaps and impurities. The regenerated adsorbent is then reused, eliminating the need for continuous disposal and reducing waste generation while maintaining purification effectiveness.
Solution Approach 2:
Adsorbent material acts as an intermediary substance that selectively adsorbs soaps and impurities from triacylglycerol in a continuous flow process. This mediator enables purification without direct contact between water and oil phases, avoiding emulsion formation and reducing water consumption compared to conventional washing methods.
2Manufacturing precision
If batch processing with extensive filter media is used, then impurity removal is improved, but processing time increases and equipment complexity increases
Solution Approach 1:
The system operates continuously with multiple columns in series, allowing uninterrupted processing of triacylglycerol. While one column is being regenerated, others continue purification, eliminating batch processing interruptions and reducing overall processing time while maintaining effective impurity removal.
Solution Approach 2:
The purification system is divided into multiple sequential columns, each performing a specific function (adsorption, regeneration, extraction). This segmentation allows parallel operation of different columns, enabling continuous processing without requiring complete shutdown for maintenance or media replacement.
3Manufacturing precision
If conventional refining processes are used, then product purity is improved, but environmental impact increases due to effluent and waste disposal
Solution Approach 1:
The adsorbent material is continuously regenerated and reused through extraction and treatment processes, eliminating the need for continuous disposal of spent filter media. This recovery process prevents solid waste generation while maintaining product purity through consistent adsorption performance.
Solution Approach 2:
The spent adsorbent, which would normally be disposed of as waste, is converted into a valuable resource through regeneration. The regeneration process recovers adsorbed triacylglycerol and restores the adsorbent's purification capacity, turning a harmful waste stream into a beneficial cyclic process that reduces environmental impact.
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 process significantly reduces water and solid waste generation, enhances economic efficiency by reusing adsorbents, and provides an environmentally friendly method for edible oil purification, allowing for continuous operation without the need for fresh water or new adsorbents.
Implementation Method 1
a continuous process for the removal of soaps and other impurities from triacylglycerol (TAG) using an adsorbent material contained in one or more columns
Implementation Method 2
regeneration of the adsorbent for re-use... This process significantly reduces water and solid waste generation, enhances economic efficiency by reusing adsorbents
Data Source
AI summary
The process utilizes the adsorbent column system as a treatment after chemical refining or before physical refining rather than water or filtration, respectively, to remove soaps and other impurities entrained in a crude triacylglycerol. The CDTAG or ORTAG is contacted with an adsorbent packed into a column, or multiple columns in series, for a sufficient amount of time to remove impurities such as, but not limited to, soaps, metals, chlorophyll, and many of the other compounds that reduce the stability of the TAG. The resulting TAG exiting the column(s) is ready for the deodorization process. Once the adsorbent no longer removes the desired amount of impurities, it is regenerated for reuse. Such a continuous regenerable adsorbent refining process substantially reduces the amount of fresh water required and the amount of waste water generated to purify TAG and reduces the amount of solid waste produced.