Driven by the expanding clean energy and advanced electronics sectors, the sustained increase in global demand for rare earth elements (REEs) necessitates more sustainable extraction methods. Studies indicate that mining tailings in north-central Chile represent a promising alternative source, containing significant concentrations of REEs like neodymium (Nd) and dysprosium (Dy).
To address this challenge, the present project focuses on advancing a technological solution for the selective capture of these elements from complex matrices. The approach involves the combined use of polymer fibers and functionalized mesoporous nanomaterials. “This proposal contributes to the recovery of mining waste, the reduction of the environmental impact of mining, and the strengthening of the national capacity to recover strategic resources with high added value,” explained Dr. Jaime Pizarro, an academic in the Department of Geospatial and Environmental Engineering.
Led by the University of Santiago, Chile, the project will be executed through its Environmental Chemistry and Remediation Laboratory in the Department of Geospatial and Environmental Engineering. The project team is well-equipped for this work, with significant experience in synthesizing functionalized nanomaterials and producing electrospun fibers.
Backed by a strong track record of scientific publications and patents, the group possesses the necessary experience to successfully develop this proposal. Critical to the project’s success is the participation of mining company Pucobre S.A. as an associate entity. They will supply mining tailings samples and collaborate in evaluating the proposed system under real conditions, thereby significantly advancing university-industry connections.
Anticipated Results
This project aims to develop an innovative hybrid material: electrospun fibers featuring functionalized mesoporous material with a high adsorption capacity for neodymium and dysprosium. The anticipated results will include detailed physicochemical characterization of the fibers and the functionalized mesoporous material, coupled with a thorough evaluation of the hybrid material’s capture capabilities. Crucially, the project will also generate technical data essential for demonstrating the viability of this technology for future implementation in mining waste recovery.
“This project offers multiple benefits, strengthening the research and development capabilities of our Department of Geospatial and Environmental Engineering and the wider Faculty of Engineering at the University of Santiago, Chile,” explained Dr. Pizarro. “It will achieve this by integrating expertise in nanomaterials, remediation, and mining waste recovery. We also anticipate consolidating laboratory infrastructure and methodologies, advancing human capital training, and producing results ripe for technology transfer. Crucially, the project will build and reinforce connections with the industrial sector, ensuring our applied research addresses real-world challenges for environmental sustainability and national technological progress.”
This project effectively articulates knowledge of nanomaterials, physicochemical characterization, and adsorption processes with environmental challenges in mining waste management. “Recovering rare earths from secondary sources like mining tailings using functionalized materials offers a sustainable alternative to conventional, high-impact extraction methods that generate hazardous waste,” stated Dr. Pizarro. “By integrating environmental chemistry, nanomaterials, and impact assessment, this proposal also trains professionals capable of applying technological solutions in contexts prioritizing resource recovery and environmental liability reduction.”
This Fondef IDeA project award underscores the unwavering commitment of the Faculty of Engineering (FING) and the University of Santiago, Chile to fostering the country’s technological and industrial advancement.