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Comprehensive Compositional Analysis of Plant Cell Walls Lignocellulosic biomass Part I: Lignin
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Adaptación de Derivados de Lignina de Organosolv Derivados de Biomasa para la Adsorción de Alta Capacidad de Rodamina
Sayantani Bhattacharya1, Maxim Galkin1, Michelle Åhlén1
1Division of Nanotechnology and Functional Materials, Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden.
ChemSusChem
|February 13, 2026
Resumen
Este estudio desarrolló nuevos adsorbentes a base de lignina para la eliminación eficiente del colorante Rodamina B del agua. La lignina modificada con resorcinol (ReL) exhibió una capacidad de adsorción y reciclabilidad superiores, mostrando su potencial para el tratamiento sostenible de aguas residuales.
Área de la Ciencia:
- Ciencia de Materiales
- Química Ambiental
- Valorización de Biomasa
Sus antecedentes:
- Los sorbentes sintéticos convencionales plantean preocupaciones ambientales.
- La valorización de la biomasa ofrece alternativas sostenibles para el desarrollo de adsorbentes.
- Los derivados de lignina presentan un recurso renovable prometedor para la síntesis de adsorbentes.
Objetivo del estudio:
- Investigar derivados de lignina como adsorbentes eficientes para la eliminación del colorante Rodamina B (RhB).
- Sintetizar y caracterizar cinco derivados de lignina de organosolv utilizando varios modificadores fenólicos.
- Evaluar la influencia de las modificaciones estructurales en el rendimiento de la adsorción y las propiedades fisicoquímicas.
Principales métodos:
- Síntesis de cinco derivados de lignina de organosolv mediante modificación en un solo paso.
- Caracterización mediante RMN de 31P, análisis de área superficial BET, SEC, TGA y DLS.
- Experimentos de adsorción para la eliminación de RhB, seguidos de análisis cinéticos y de isoterma.
Principales resultados:
- La lignina modificada con resorcinol (ReL) demostró la mayor capacidad de adsorción de RhB (101,2 mg g⁻¹).
- La alta área superficial, el volumen de poros y la disponibilidad de grupos funcionales en ReL contribuyeron a una mejor adsorción.
- La adsorción siguió la cinética de segundo orden pseudo y los modelos de isoterma de Langmuir, lo que indica quimisorción y adsorción de monocapa.
- ReL retuvo el 62% de la eficiencia de adsorción después de cinco ciclos, demostrando una buena reciclabilidad.
Conclusiones:
- Los adsorbentes de ingeniería estructural a base de lignina son eficaces para la eliminación de RhB.
- ReL muestra un potencial significativo como material rentable, eficiente y reutilizable para el tratamiento sostenible de aguas residuales.
- Esta investigación contribuye a la valorización de la biomasa para aplicaciones de remediación ambiental.
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