Evaluación de la eficiencia del biochar de bambú en la eliminación de microcistina-LR del agua

Autores/as

DOI:

https://doi.org/10.26461/27.06

Palabras clave:

biomasa, pirólisis, carbón, adsorción, cianotoxina

Resumen

Es fundamental desarrollar adsorbentes sostenibles y rentables para eliminar la microcistina-LR (MCLR). Se pirolizó Bambusa  Tuldoides a varias temperaturas (400, 500 y 600 °C) y tiempos de residencia (0,5 y 2 h) para producir una serie de biochares. La capacidad de adsorción de MCLR observada (219 μg g-1 para una muestra de 600B0.5) en condiciones de pH similares a las de una planta de tratamiento de agua (pH = 7.6) se atribuye principalmente a las interacciones hidrofóbicas, el apilamiento π-π y la naturaleza básica de los biochares (pHpzc > 8). Un análisis exhaustivo, que incluye FTIR, análisis elemental y próximo, TG, SEM, adsorción de N2, porosimetría de Hg y espectroscopia Raman, respalda este hallazgo. Además, para comparar el 600B0.5 con un carbón activado disponible comercialmente, se realizó un estudio dinámico utilizando agua contaminada real. La muestra 600B0.5 exhibe una eficiencia de eliminación del 99,5 %, lo que da como resultado una concentración final de 0.28 μg L-1, muy por debajo del valor de referencia de la Organización Mundial de la Salud de 1 μg L-1. 

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Citas

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Publicado

2024-06-27

Cómo citar

Castro, Y. ., Hernández, C., Pina, A. C., Míguez, D., & Casco, M. E. (2024). Evaluación de la eficiencia del biochar de bambú en la eliminación de microcistina-LR del agua. INNOTEC, (27 ene-jun), e654. https://doi.org/10.26461/27.06

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