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

Coatings, Год журнала: 2025, Номер 15(3), С. 317 - 317

Опубликована: Март 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.

Язык: Английский

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Synthesis of composites from coal gasification slag by acid leaching and NaOH activation for efficient adsorption of methylene blue

Applied Surface Science, Год журнала: 2024, Номер 679, С. 161186 - 161186

Опубликована: Сен. 7, 2024

Язык: Английский

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Pilot-scale, cost-effective waste resource recovery: Efficient reduction of trace Au(Ⅰ) from industrial wastewater via an adsorption and electrodeposition coupling process

Separation and Purification Technology, Год журнала: 2025, Номер 361, С. 131641 - 131641

Опубликована: Янв. 15, 2025

Язык: Английский

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Enhanced adsorption for aqueous lead (Ⅱ) by red mud-modified biochar via microwave-assisted hydrothermal carbonization and K2CO3 activation: Performance and mechanism

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131825 - 131825

Опубликована: Янв. 1, 2025

Язык: Английский

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Enhanced Cadmium Adsorption by Silicate-Modified Biochar Derived from Sawdust: Mechanisms and Performance Analysis

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 106430 - 106430

Опубликована: Апрель 1, 2025

Язык: Английский

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Effective and realistic sequestration of Sr2+ and B3+ ions from the aqueous environments using coral reefs based Ca-MCM-41: Gulf of Suez as case study

Frontiers in Chemistry, Год журнала: 2025, Номер 13

Опубликована: Апрель 16, 2025

A mesoporous calcium-bearing siliceous framework (Ca-MCM-41) was synthesized using natural coral reef carbonate rocks as precursors. The structural characterization, confirmed through XRD, SEM, FT-IR, and BET analyses, validated the formation of MCM-41 with well-defined properties a high surface area 159.6 m2/g. developed Ca-MCM-41 evaluated potential adsorbent for removal Sr2+ B3+ ions from both aqueous solutions real seawater samples collected Gulf Suez, Egypt. adsorption capacity at saturation reached 285.9 mg/g 86.1 B3+, demonstrating framework's affinity these contaminants. mechanisms were elucidated steric energetic parameters, derived statistical physics-based isotherm models. exhibited higher active site density (148.9 mg/g) compared to (54.8 mg/g), explaining its superior sequestration performance strontium ions. Each receptor capable accommodating up three 2 ions, indicating multi-ionic interaction process preferential vertical alignment during adsorption. Energetic analysis revealed that occurred via physical energies below 7 kJ/mol, alongside exothermic spontaneous behavior, evidenced by calculated internal energy, entropy, enthalpy values. structure demonstrated notable efficiency in applications, achieving percentages 80% 64% considering their average concentrations (24.2 mg/L 12.85 B3+) 1-L volume. These findings highlight an effective sustainable environmental water treatment applications.

Язык: Английский

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Lead adsorbent of hydroxyapatite production from self-aggregated calcium-Sualo prawn shell waste and phosphate-rich wastewater of an integrated multi-technology whiteleg shrimp aquaculture system

Aquaculture International, Год журнала: 2025, Номер 33(4)

Опубликована: Апрель 22, 2025

Язык: Английский

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Synthesis of Hydroxyapatite Mulberry Stem Biochar Composites for Efficient Pb(II) Adsorption from Aqueous Solutions

Water, Год журнала: 2025, Номер 17(9), С. 1389 - 1389

Опубликована: Май 5, 2025

In this study, two biochar composites, namely hydroxyapatite/mulberry stem (HMp) and magnesium-doped HMp (Mg0.1-HMp), were prepared using mulberry as the major raw material sol–gel process. Characterization batch experiments carried out on Mg0.1-HMp to investigate Pb(II) adsorption mechanism factors affecting adsorption, respectively. The results indicated that carboxylic compounds, phenols, carbonyl functional groups formed surfaces of Mg0.1-HMp. At an optimal pH 5, period 6 h was achieved at initial concentration 100 mg/L adsorbent quantity 2 g/L. maximum capacities 303.03 312.50 mg/g, respectively, 25 °C. capacity 2.55 times more than (MBC). by is consistent with Langmuir isotherm pseudo-second-order kinetic models, demonstrating a spontaneous, endothermic, irreversible process dominated monolayer chemical adsorption. These show mechanisms mainly involved electrostatic interaction, complexation, precipitation, ion exchange.

Язык: Английский

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Robust and anti-biofouling bio-based aerogel with Schiff base network stabilized MOFs for efficient removal of tartrazine dye and U(VI) ions

Separation and Purification Technology, Год журнала: 2024, Номер 361, С. 131277 - 131277

Опубликована: Дек. 25, 2024

Язык: Английский

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Enhanced Adsorption for Aqueous Pb (Ⅱ) by Red Mud-Modified Biochar Via Microwave-Assisted Hydrothermal Carbonation and K2co3 Activation: Performance and Mechanism

Опубликована: Янв. 1, 2024

Язык: Английский

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