| Autor: |
Zakaria Al-Qodah, Radwan Dweiri, Maimonah Khader, Soleen Al-Sabbagh, Mohammad Al-Shannag, Saif Qasrawi, Mahmoud Al-Halawani |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Case Studies in Chemical and Environmental Engineering, Vol 7, Iss , Pp 100333- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2666-0164 |
| DOI: |
10.1016/j.cscee.2023.100333 |
| Popis: |
The objective of this study is to prepare magnetic composites as adsorbents for Cr(VI) from wastewater. The prepared composites are magnetic activated carbon (M-AC), magnetic ash (M-ASH), and magnetic sand (M-SAND). These composites were characterized using XRF, FTIR, XRD, and TGA, and then tested as adsorbents for toxic Cr(VI) ions from synthetic wastewater. The elemental analysis of the composites showed a crucial increment in the Fe content of about 6425%, 3600%, and 93% for M-SAND, M-AC, and M-Ash, respectively. Their FTIR spectrum showed the existence of the Fe–O bond vibration, indicating the presence of Fe3O4 particles as confirmed by the XRD pattern. The pseudo-second-order model best described the adsorption kinetic results and the Redlich-Peterson isotherm model accurately described the equilibrium data of ion adsorption by the three composites at 25 and 40 °C with relatively high values of R2. The composites showed their highest adsorption capacities for Cr(VI) ions at 40 °C with an average adsorption capacity of the composites was about 50 mg/g. These relatively high values demonstrate the adsorption ability of the magnetic composites and present a strategy to use the adsorption process for Cr(VI) ions by these composites as efficient adsorbents. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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