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Constructing electro-Fenton PVDF membrane with Fe/Cu doped CNTs using lignin as green dispersant for efficient dye removal efficiency and sustainable antifouling and self-cleaning performance.

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Title:	Constructing electro-Fenton PVDF membrane with Fe/Cu doped CNTs using lignin as green dispersant for efficient dye removal efficiency and sustainable antifouling and self-cleaning performance.
Authors:	Zhao, Luwen¹ (AUTHOR), Zhu, Boxuan¹ (AUTHOR), Lv, Li¹ (AUTHOR), Zhu, Yuan¹ (AUTHOR), Zhao, Gege¹ (AUTHOR), Du, Tianqi¹ (AUTHOR), Zhang, Miao¹ (AUTHOR), Li, Chengcheng¹ (AUTHOR), Cai, Zaisheng¹ (AUTHOR), Zhao, Yaping^1,2 (AUTHOR) zhaoyping@dhu.edu.cn
Source:	Separation & Purification Technology. Apr2026, Vol. 388, pN.PAG-N.PAG. 1p.
Subjects:	Wastewater treatment, Membrane separation, Liquid membranes, Dispersing agents, Composite membranes (Chemistry), Color removal (Sewage purification), Carbon nanotubes
Abstract:	The membrane with exceptional selectivity, permeability, and stability shows excellent potential for wastewater treatment. However, their practical implementation faces persistent challenges of membrane fouling and low separation efficiency. Hence, we developed a lignin-dispersed Fe/Cu@CNTs/PVDF(PVDF@L-CFC) electrically conductive composite membrane fabricated via a facile method to address these problems. The conductive PVDF@L-CFC membranes exhibited a high water flux of 189.2 L·m−2·h−1 and a favorable separation efficiency (>90 %) for Methylene Blue (MB). Moreover, the membrane demonstrated outstanding antifouling performance under an applied electric field, maintaining 95.1 % of its normalized flux after five consecutive filtration cycles following MB treatment. With its integrated advantages of electrocatalytic activity, efficient separation, and strong fouling resistance, the PVDF@L-CFC membrane shows great promise for the purification of textile printing and dyeing wastewater. [Display omitted] • The Fe/Cu@CNTs enhances the separation performance and self-cleaning capability of membranes. • Lignin enhances membrane hydrophilicity, porosity, and disperses Fe/Cu@CNTs for improved electrocatalysis. • PVDF@L-CFC shows notable antifouling and self-cleaning capabilities, retaining 0.951 flux over 5 cycles. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	The membrane with exceptional selectivity, permeability, and stability shows excellent potential for wastewater treatment. However, their practical implementation faces persistent challenges of membrane fouling and low separation efficiency. Hence, we developed a lignin-dispersed Fe/Cu@CNTs/PVDF(PVDF@L-CFC) electrically conductive composite membrane fabricated via a facile method to address these problems. The conductive PVDF@L-CFC membranes exhibited a high water flux of 189.2 L·m−2·h−1 and a favorable separation efficiency (>90 %) for Methylene Blue (MB). Moreover, the membrane demonstrated outstanding antifouling performance under an applied electric field, maintaining 95.1 % of its normalized flux after five consecutive filtration cycles following MB treatment. With its integrated advantages of electrocatalytic activity, efficient separation, and strong fouling resistance, the PVDF@L-CFC membrane shows great promise for the purification of textile printing and dyeing wastewater. [Display omitted] • The Fe/Cu@CNTs enhances the separation performance and self-cleaning capability of membranes. • Lignin enhances membrane hydrophilicity, porosity, and disperses Fe/Cu@CNTs for improved electrocatalysis. • PVDF@L-CFC shows notable antifouling and self-cleaning capabilities, retaining 0.951 flux over 5 cycles. [ABSTRACT FROM AUTHOR]
ISSN:	13835866
DOI:	10.1016/j.seppur.2026.136782