| Title |
Nanocobalt based (Co@Co(OH)2) sand nanocomposite applied to manganese extraction from contaminated water |
| ID_Doc |
23994 |
| Authors |
Kumar, R; Rauwel, P; Kriipsalu, M; Wragg, D; Rauwel, E |
| Title |
Nanocobalt based (Co@Co(OH)2) sand nanocomposite applied to manganese extraction from contaminated water |
| Year |
2023 |
| Published |
Journal Of Environmental Chemical Engineering, 11, 3 |
| DOI |
10.1016/j.jece.2023.109818 |
| Abstract |
This study presents the adsorption capability of a filter composed of sand coated with cobalt nanomaterials (CoNM) for the extraction of manganese ions from aqueous media. The study was performed in both batch and dynamic modes in order to evaluate the adsorption capabilities of free-standing CoNM and CoNM-coated sand. The Langmuir and Freundlich isotherm models were applied to the adsorption of manganese ions in batch-mode. The Langmuir model estimated a maximum adsorption capacity of 17.86 mg/g corresponding to a single layer adsorption. Nevertheless, the Freundlich model also characterized the adsorption with a high coefficient of determination, suggesting a multilayered adsorption mechanism of Mn on CoNM. Dynamic mode studies were conducted with different influent Mn concentrations, pH and in the presence of foreign or competing ions (Fe3+, As3+, As5+ and Cu2+). The experimental data was fitted with linearized Thomas and Yoon-Nelson models in order to determine adsorption capacities. The multilayered adsorption mechanism was confirmed owing to a high adsorption capacity of 3360 mg/g of active nanomaterials at pH = 6. |
| Author Keywords |
Nanoparticles; Nanocomposites; Cobalt; Manganese; Water remediation; Circular economy |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001043809700001 |
| WoS Category |
Engineering, Environmental; Engineering, Chemical |
| Research Area |
Engineering |
| PDF |
https://doi.org/10.1016/j.jece.2023.109818
|