Selective Adsorption of Lead in Mixed Metals Wastewater System by Lignin-Carbon-Supported Titanate Nanoflower BC@TNS Adsorbent: Performance and Mechanism DOI Open Access

Jielan Feng,

Lei Zhong, Zekun Yang

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(3), P. 317 - 317

Published: March 9, 2025

This study introduced a novel type of biochar–titanate nanosheet (BC@TNS) composite for the selective adsorption Pb(II) from wastewater containing various heavy metal ions. The biochar derived lignin–carbon pyrolysis forms scaffold, while titanate nanosheets coat it via an alkaline hydrothermal reaction. synthesis was confirmed through analytic characterizations, revealing distinctive morphology TNS nanoflowers consisting numerous incorporated into BC support. BC@TNS achieved maximum capacities 37.89 mg/g Pb(II), 13.38 Cd(II), and 8.47 Zn(II), demonstrating its remarkable selectivity Pb(II). Kinetic studies using Weber–Morris, PFO, PSO models indicated that primarily driven by chemisorption, whereas Cd(II) Zn(II) were predominantly governed physisorption. Isotherm analysis Langmuir, Freundlich, Dubinin–Radushkevich, Temkin revealed involved both monolayer multilayer processes, monolayer. Detailed insights scanning electron microscopy (SEM-EDS) X-ray photoelectron spectroscopy (XPS) analyses further elucidated these mechanisms. superior validated in multicomponent simulated HMs 10 co-existing ions, maintaining high efficiency 75.68%, highlighting potential Pb recovery. Moreover, adsorbent demonstrated excellent regeneration capacity recyclability. shows great efficient removal ions wastewater, offering sustainable solution environmental protection.

Language: Английский

Selective Adsorption of Lead in Mixed Metals Wastewater System by Lignin-Carbon-Supported Titanate Nanoflower BC@TNS Adsorbent: Performance and Mechanism DOI Open Access

Jielan Feng,

Lei Zhong, Zekun Yang

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(3), P. 317 - 317

Published: March 9, 2025

This study introduced a novel type of biochar–titanate nanosheet (BC@TNS) composite for the selective adsorption Pb(II) from wastewater containing various heavy metal ions. The biochar derived lignin–carbon pyrolysis forms scaffold, while titanate nanosheets coat it via an alkaline hydrothermal reaction. synthesis was confirmed through analytic characterizations, revealing distinctive morphology TNS nanoflowers consisting numerous incorporated into BC support. BC@TNS achieved maximum capacities 37.89 mg/g Pb(II), 13.38 Cd(II), and 8.47 Zn(II), demonstrating its remarkable selectivity Pb(II). Kinetic studies using Weber–Morris, PFO, PSO models indicated that primarily driven by chemisorption, whereas Cd(II) Zn(II) were predominantly governed physisorption. Isotherm analysis Langmuir, Freundlich, Dubinin–Radushkevich, Temkin revealed involved both monolayer multilayer processes, monolayer. Detailed insights scanning electron microscopy (SEM-EDS) X-ray photoelectron spectroscopy (XPS) analyses further elucidated these mechanisms. superior validated in multicomponent simulated HMs 10 co-existing ions, maintaining high efficiency 75.68%, highlighting potential Pb recovery. Moreover, adsorbent demonstrated excellent regeneration capacity recyclability. shows great efficient removal ions wastewater, offering sustainable solution environmental protection.

Language: Английский

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