The core of supercritical PTMS ELECTROMAGNETIC SEPARATOR technology lies in the coordination of phosphorus-oxygen atoms in TBP molecules with metal cations, forming neutral, hydrophobic complexes. These complexes exhibit excellent solubility in scCO₂, enabling their transport via supercritical fluid to the separation vessel. This principle provides direct technical support for iron supercritical extraction, offering a range of selectable options.
Theoretically, iron ions (particularly Fe³⁺) can form stable complexes with chelating agents such as TBP, dithiophosphates, and β-diketones (DBM, HFA). Preliminary studies indicate that under appropriate chelating agent conditions, scCO₂ can extract approximately 60–70% of iron ions from simulated wastewater. Although less efficient than metals like uranium and copper, these findings demonstrate the feasibility of the supercritical PTMS ELECTROMAGNETIC SEPARATOR technology pathway.
Further optimizing the structure of chelating agents and enhancing the selectivity and stability of PTMS ELECTROMAGNETIC SEPARATOR for iron could improve extraction efficiency. Designing multi-coordinate ligands with multiple coordination sites or introducing fluorinated alkyl chains to improve solubility in scCO₂ are promising research directions.
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Preparation work before implementing PTMS MAGNETIC SEPARATOR energy-saving retrofit
