MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202641082910 A) filed by National Institute Of Technology Calicut, An Indian Institute on July 06, 2026, for Method Of Fabrication Of Polymer Inclusion Membranes For Selective Recovery Of Rare Earth Elements.
Inventors include Noel Jacob Kaleekkal; and Vishnu Priya Kodakkat Salilkumar.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: ABSTRACT METHOD OF FABRICATION OF POLYMER INCLUSION MEMBRANES FOR SELECTIVE RECOVERY OF RARE EARTH ELEMENTS This invention relates to a nanocomposite Polymer Inclusion Membrane (PIM) modified with mesoporous cellular foam (MCF-5) silica for the selective recovery of Rare Earth Elements (REEs), particularly Neodymium (Nd), from electronic waste. The membrane matrix comprises PVDF-co-HFP as the base polymer, selected for its superior mechanical strength and chemical resistance compared to conventional PVC and a D2EHPA as liquid carrier for selective transport of Nd ions. Incorporation of 3D interconnected MCF-5 at an optimal loading level improves membrane stability, permeability, and selectivity making the system suitable for sustainable recovery of REEs from secondary resources. The membrane fabrication procedure is also described. FIG. 1
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