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, Год журнала: 2024, Номер 348, С. 127598 - 127598

Опубликована: Апрель 20, 2024

Язык: Английский

---

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

Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 152848 - 152848

Опубликована: Июнь 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.

Язык: Английский

---

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

Separation and Purification Technology, Год журнала: 2024, Номер 352, С. 128146 - 128146

Опубликована: Май 27, 2024

Язык: Английский

---

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

iScience, Год журнала: 2025, Номер 28(2), С. 111762 - 111762

Опубликована: Янв. 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.

Язык: Английский

---

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

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 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.

Язык: Английский

---

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

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 141414 - 141414

Опубликована: Фев. 1, 2025

Язык: Английский

---

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

Journal of Water Process Engineering, Год журнала: 2025, Номер 71, С. 107347 - 107347

Опубликована: Март 1, 2025

Язык: Английский

---

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

Journal of Molecular Structure, Год журнала: 2025, Номер unknown, С. 141964 - 141964

Опубликована: Март 1, 2025

Язык: Английский

---

Screening of metal-modified biochars for practical phosphorus recovery

The Science of The Total Environment, Год журнала: 2024, Номер 956, С. 177342 - 177342

Опубликована: Ноя. 7, 2024

Язык: Английский

---

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

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132205 - 132205

Опубликована: Фев. 1, 2025

Язык: Английский

---