Aprovechamiento de lignina obtenida en biorrefinería como adsorbente de metales
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2024-09-10
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[ES] Existen varios métodos para la eliminación de metales, siendo la adsorción uno de las posibles vías de tratamiento más eficientes. Sin embargo, es importante encontrar adsorbentes de origen renovable para que el tratamiento aplicado no sea solo eficiente sino también más sostenible. El objetivo de este trabajo fue revisar el aprovechamiento de la biomasa lignocelulosa para obtener materiales adsorbentes de metales pesados en el marco de biorrefinerías. Los artículos estudiados han obtenido dos tipos de lignina, lignina de pretratamiento y lignina de hidrólisis enzimática. Se ha observado que estas ligninas se pueden modificar para mejorar su capacidad de adsorción debido, por ejemplo, a la presencia de grupos que facilitan la quelación de los iones de los metales. La obtención de ligninas adsorbentes en el marco de biorrefinerías favorecería el empleo de materias primas renovables y su aprovechamiento para promover una bioeconomía circular.
[EN] There are several methods for metal removal, with adsorption being one of the most efficient possible treatment routes. However, it is important to find adsorbents of renewable origin so that the treatment applied is not only efficient but also more sustainable. The objective of this work was to review the use of lignocellulosic biomass to obtain adsorbent materials of heavy metal in the framework of biorefineries. The articles studied have obtained two types of lignin, pretreatment lignin and enzymatic hydrolysis lignin. It has been observed that these lignins can be modified to improve their adsorption capacity due, for example, to the presence of groups that facilitate chelation of metal ions. Obtaining adsorbent lignins within the framework of biorefineries would favor the use of renewable materials and their use to promote a circular bioeconomy.
[EN] There are several methods for metal removal, with adsorption being one of the most efficient possible treatment routes. However, it is important to find adsorbents of renewable origin so that the treatment applied is not only efficient but also more sustainable. The objective of this work was to review the use of lignocellulosic biomass to obtain adsorbent materials of heavy metal in the framework of biorefineries. The articles studied have obtained two types of lignin, pretreatment lignin and enzymatic hydrolysis lignin. It has been observed that these lignins can be modified to improve their adsorption capacity due, for example, to the presence of groups that facilitate chelation of metal ions. Obtaining adsorbent lignins within the framework of biorefineries would favor the use of renewable materials and their use to promote a circular bioeconomy.