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Biominería Urbana de Elementos de Tierras Raras: Estado Actual y Oportunidades Futuras
1Department of Civil and Environmental Engineering, School of Engineering and Applied Science, The George Washington University, 800 22nd Street NW, Washington, D.C. 20052, United States.
ACS environmental Au
|January 26, 2026
Resumen
El reciclaje de elementos de tierras raras (ETR) de los residuos electrónicos es un desafío. Esta revisión explora métodos innovadores de base biológica que utilizan microorganismos y biomoléculas para una recuperación eficiente y sostenible de ETR.
Área de la Ciencia:
- Ciencia de materiales
- Ciencia ambiental
- Biotecnología
Sus antecedentes:
- Los elementos de tierras raras (ETR) son cruciales para las tecnologías avanzadas, pero son difíciles de extraer convencionalmente.
- Los residuos electrónicos (e-waste) presentan una fuente importante para la recuperación de ETR a través de la minería urbana.
- Los métodos actuales de reciclaje de ETR consumen mucha energía, son químicamente agresivos e ineficientes.
Objetivo del estudio:
- Revisar y destacar los avances en la biorrecuperación de ETR de residuos electrónicos basada en microorganismos.
- Identificar áreas clave para mejorar la eficiencia y sostenibilidad de la extracción de ETR.
- Proporcionar información para el desarrollo de sistemas integrados de lixiviación biológica y bioseparación.
Principales métodos:
- Utilización de compuestos orgánicos derivados de bacterias para la lixiviación biológica de ETR.
- Empleo de biomoléculas recombinantes (proteínas, péptidos, ácidos nucleicos) para la biosorción y bioprecipitación selectiva de ETR.
- Desarrollo de sistemas microbianos y sistemas no chassis avanzados para mejorar la biorrecuperación.
Principales resultados:
- La lixiviación biológica y la biosorción ofrecen alternativas más ecológicas al reciclaje convencional de ETR.
- Las biomoléculas diseñadas muestran una gran promesa para la recuperación selectiva de ETR.
- Los sistemas microbianos pueden mejorar significativamente la eficiencia de la extracción de ETR de los residuos electrónicos.
Conclusiones:
- Las tecnologías de biorrecuperación son esenciales para la explotación sostenible de ETR de residuos electrónicos.
- Se necesita un mayor desarrollo de enfoques microbianos y biomoleculares para una recuperación robusta de ETR.
- Los sistemas integrados de lixiviación biológica y bioseparación son clave para avanzar en la biominería urbana de ETR.
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