Hierarchical ZnO/ZnFe2O4 yolk-shell adsorbent as a promising material for phosphate recovery and adsorption of organic pollutants from the simulated wastewater

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 348, P. 127598 - 127598

Published: April 20, 2024

Language: Английский

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Lanthanum and cerium functionalised forestry waste biochar for phosphate removal: Mechanisms and real-world applications

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 152848 - 152848

Published: June 6, 2024

Phosphorus as a diminishing resource, is an essential element for the growth of biota. However elevated concentrations in water imbalance ecosystem and cause eutrophication. To address both problems, two highly efficient biochars, namely La-OB CeLa-OB were synthesised by lanthanum cerium doping. The performance evaluated both, batch dynamic regimes with synthetic phosphate (PO43--P) solutions eutrophic lake water. PO43--P adsorption mechanisms investigated terms pH, kinetics, isotherms, activation energy, thermodynamics in-depth characterisation (XPS, FTIR, XRD, BET, pHpzc SEM-EDX); feasibility using biochar 'real life' was studied column filtration low high concentrations, along reusability/desorption toxicity trials environment. mechanistic study showed that biochars dominantly made inner-sphere complexes La Ce ligands (as monolayer), while outer-sphere complexation less common. exothermic process followed Elovich kinetic Langmuir isotherm models maximum capacity 112 mg/g 40 CeLa-OB. In reached 78 mg/g, metal leaching (0.08 mg/L) to Lepidium sativum germination detected. results indicated these especially could be used circular economy-based treatment.

Language: Английский

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High-efficiency lanthanum-modified zeolite adsorbents for phosphorus control and algal suppression: Preparation, characterization and mechanistic insights

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 352, P. 128146 - 128146

Published: May 27, 2024

Language: Английский

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Recyclable adsorbents of iron and lanthanum co-modified clam shells for phosphorus removal from domestic sewage: characterization and mechanisms

iScience, Journal Year: 2025, Volume and Issue: 28(2), P. 111762 - 111762

Published: Jan. 6, 2025

This research focused on creating a recyclable magnetic adsorbent, termed La@Fe-CCS, which was modified with lanthanum (La) to improve its efficiency in removing phosphate. The process involved integrating into an iron (Fe)-based clam shell matrix (Fe-CCS). study showed that La@Fe-CCS demonstrated superior adsorption capabilities within pH range of 3-8 compared Fe-CCS. Coexisting ions and humic acid (HA) had limited effects. also exhibited rapid kinetics, achieving equilibrium 20 min. It theoretical maximum capacity 43.61 mg/g, substantially higher than Fe-CCS (5.79 mg/g). XPS FTIR analyses indicated phosphate removal by involves ligand exchange between surface hydroxyl groups phosphate, as well intrasphere complexation. In real domestic sewage, achieved over 95% total phosphorus (P) removal. These results suggest is highly efficient adsorbent for practical P remediation applications.

Language: Английский

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Preparation of efficient and reusable lanthanum and iron co-modified soda residue for selective phosphate removal from domestic sewage

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 24, 2025

The selection of suitable raw materials as adsorbents is a key factor in effectively removing phosphorus from water. As an industrial by-product, soda residue exhibits high porosity and surface area, which can adsorb pollutants. Magnetic lanthanum-iron (La-Fe-CSR) was synthesized using the co-precipitation method, its characterization mechanism for phosphate were thoroughly investigated. La-Fe-CSR exhibited good adsorption performance under acidic conditions (3 < pH 7). A concentration HCO3− (100 mg/L) reduced by 8.3% ± 2.5%, whereas presence other coexisting ions had smaller impact. controlled chemisorption reached saturation after approximately 120 min. significantly higher than that (43.65 3.39 mg/g), reaching 74.87 2.46 mg/g. Ligand exchange inner-sphere complexation constituted primary mechanisms through L-Fe-CSR removed phosphate. After 5 consecutive cycles, maintained removal efficiency 74.5 1.6%. It demonstrated total real domestic sewage, with rate 94.9 0.5%. These research findings held significant promise highly effective adsorbent practical applications.

Language: Английский

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Lanthanum-loaded biochar-based alginate hydrogels for efficient phosphate adsorption from wastewater

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 141414 - 141414

Published: Feb. 1, 2025

Language: Английский

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High efficiency of phosphate adsorption by yolk-shell Mn–La binary nanocomposites from aqueous solution: Adsorption and mechanism studies

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 71, P. 107347 - 107347

Published: March 1, 2025

Language: Английский

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Adsorption behaviors and mechanisms of phosphate adsorption from wastewater using new oil sludge-based carbon by Fe-Zr co-modified

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141964 - 141964

Published: March 1, 2025

Language: Английский

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Screening of metal-modified biochars for practical phosphorus recovery

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 956, P. 177342 - 177342

Published: Nov. 7, 2024

Language: Английский

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Hierarchical porous carbon electrodes derived from bimetallic MOF on cellulose fibers for Electrical-Assisted adsorption of phosphate

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132205 - 132205

Published: Feb. 1, 2025

Language: Английский

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