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Procesos sinérgicos no faradaicos y faradaicos para la recuperación eficiente de fosfato y el control de

Jun Wei¹, Ying Mei¹, Ce Wang²

¹Research and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, PR China; State Key Laboratory of Wetland Conservation and Restoration, Beijing Normal University, Zhuhai 519087, PR China; School of Environment, Beijing Normal University, Beijing 100875, PR China.

|February 28, 2026

Resumen

Este estudio presenta un nuevo electrodo para la desionización capacitiva (CDI) que recupera eficientemente el fósforo (P) y degrada la materia orgánica. El nuevo material demuestra una alta adsorción de P y eficiencia de eliminación, incluso en presencia de ácido húmico (HA).

Área de la Ciencia:

Ciencias Ambientales
Ciencia de Materiales
Electroquímica

Sus antecedentes:

La desionización capacitiva (CDI) para la recuperación de fósforo se ve obstaculizada por el rendimiento del electrodo y la interferencia de la materia orgánica natural.
El desarrollo de materiales de electrodo eficientes es crucial para la eliminación práctica de fósforo de las aguas residuales.

Objetivo del estudio:

Desarrollar un nuevo material de electrodo para la adsorción sinérgica de fósforo y la degradación de contaminantes orgánicos en CDI.
Investigar el rendimiento de los electrodos de aleación CoFe (CoFeMC-X) incrustados en carbono mesoporoso derivados de análogos de azul de Prusia.

Principales métodos:

Fabricación de electrodos CoFeMC-X mediante pirólisis de análogos de azul de Prusia.
Optimización de la temperatura de pirólisis para mejorar el rendimiento del electrodo.
Pruebas electroquímicas para la adsorción, desorción de fósforo y degradación de ácido húmico.
Validación utilizando efluente secundario real y pruebas de estabilidad cíclica.

Principales resultados:

El electrodo optimizado CoFeMC-900 exhibió una alta capacidad de adsorción de P (6,65 mg P·g⁻¹) y una tasa de reacción (0,011 min⁻¹).
La adsorción sinérgica y la degradación faradaica eliminaron eficazmente el 97,2 % de P en presencia de ácido húmico a 3 V.
El electrodo demostró una buena estabilidad cíclica y aplicabilidad en aguas residuales reales.

Conclusiones:

El nuevo electrodo CoFeMC-900 ofrece una recuperación eficiente de fósforo y degradación de contaminantes orgánicos en sistemas CDI.
El estudio destaca la importancia de las reacciones sinérgicas no faradaicas y faradaicas para el tratamiento de aguas residuales complejas.
Este trabajo proporciona un material y una estrategia prometedores para la recuperación práctica de fósforo de aguas residuales reales que contienen materia orgánica natural.

Palabras clave:

desionización capacitiva reacción faradaica control de incrustaciones recuperación de fosfato pseudocapacitancia

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