Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers.

Area of Science:

• Materials Science
• Environmental Chemistry
• Inorganic Chemistry

Background:

• Growing demand for rare earth elements (REE) necessitates efficient recovery methods.
• Ion exchange resins are crucial for separating and purifying REE.
• Developing advanced materials for enhanced REE sorption is vital.

Purpose of the Study:

• To investigate the sorption efficiency of a novel interpolymer system, Lewatit CNP LF@AV-17-8 (X:Y), for lutetium (Lu3+) ions.
• To evaluate the performance of varying mass ratios of the interpolymer system.
• To assess the potential of this system for rare earth element recovery.

Main Methods:

• Synthesis of the interpolymer system "Lewatit CNP LF@AV-17-8" (X:Y) at different mass ratios.
• Sorption experiments using lutetium ions in a nitrate solution.
• Analytical techniques including gravimetry, UV-VIS spectroscopy, and ICP-OES for quantification.
• Adsorption modeling using the Freundlich isotherm.

Main Results:

• The interpolymer system "Lewatit CNP LF@AV-17-8" (4:2) showed a significantly enhanced Lu3+ sorption rate (42%) compared to individual components (25% and 21%).
• The system demonstrated conformity to the Freundlich adsorption model, indicating effective sorption characteristics.
• An adsorption capacity of 221.05 mg/g was achieved with the optimized interpolymer system.

Conclusions:

• The "Lewatit CNP LF@AV-17-8" (4:2) interpolymer system is a highly effective sorbent for lutetium ions.
• This novel material offers a promising approach for enhancing rare earth element recovery from aqueous solutions.
• The findings support the development of advanced ion exchange materials for critical element extraction.