Published: April 4, 2025
The field of study rare earth element (REE) adsorption by metal–organic frameworks (MOFs) has emerged relatively recently. Recovering REEs from industrial, mining, and end-of-life electronics recycling effluents offers a sustainable approach to mitigating their unrestricted release into the environment. MOFs, known for exceptional porosity modifiability, have demonstrated significant potential as efficient adsorbents REE recovery aqueous environments. To propel advancement this promising technology, review fragmented research conducted over past decade on MOFs been undertaken. Functionalization combination proven effective in enhancing adsorbent capacity, stability, rate, reusability. Notably, 3D-agaric-like core–shell U6N@ZIF-8-20 MOF, MOF-bonded silica amine polymer, phosphonic acid–functionalized ZIF-67@SiO2 MOF exhibited capacities 341.0, 426.0, 342.5 mg/g Er3+, Y3+, Ce3+, respectively. Eluents such HCl, HNO3, acetonitrile successfully achieved up five adsorption–desorption cycles with minimal loss efficiency. While are highly adsorption, further advancements needed reducing equilibrium time, conducting fixed-bed column studies, evaluating real-world wastewater support continued development.
Language: Английский