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Ferrous Magnetic Nanoparticles for Arsenic Removal from Groundwater
| Content Provider | MDPI |
|---|---|
| Author | Mar, ía T. Alarcón-Herrera Pablo, D. Astudillo-Sánchez Liliana, Licea-Jiménez Morales-Amaya, Corazón G. Lozano-Morales, Samuel A. Reynoso-Cuevas, Liliana |
| Copyright Year | 2021 |
| Description | Arsenic in water is currently a global concern due to the long-term exposure that could affect human health. In this study, magnetic nanoparticles (MNPs), $CoFe_{2}O_{4}$, and $MnFe_{2}O_{4}$ were successfully synthesized and applied to remove arsenic (As) from water. The MNPs were characterized using different techniques, such as scanning electron microscope (SEM), Brunauer–Emmet–Teller (BET), and photoelectron spectroscopy (XPS). The nanoscale size and the specific surface area achieved a fast, selective, and high As adsorption capacity. MNPs have a mesoporous structure with a mean pore diameter of 5 nm and a mean particle size of 30 nm. The adsorption capacity of these MNPs was determined through kinetic and equilibrium experiments, multilayer adsorption that obeyed the Freundlich model equation was observed, and the maximum adsorption capacities reached were 250 mg/g for $CoFe_{2}O_{4}$ and 230 mg/g for $MnFe_{2}O_{4}$. Furthermore, MNPs characteristics like regeneration and reuse, several pH tolerances, non-ion interference, and effective As removal from groundwater samples confirms the nanomaterials’ potential for future applications in water treatment systems combined with magnetic separation. |
| Starting Page | 2511 |
| e-ISSN | 20734441 |
| DOI | 10.3390/w13182511 |
| Journal | Water |
| Issue Number | 18 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-09-13 |
| Access Restriction | Open |
| Subject Keyword | Water Environmental Engineering Environmental Sciences Selective Adsorption Rate Maximum Adsorption Capacities External Magnetic Field Arsenite Removal Water Purification Systems |
| Content Type | Text |
| Resource Type | Article |