Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater
Fly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Brunaue...
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2020-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/1/63 |
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| author | Maria Harja Gabriela Buema Nicoleta Lupu Horia Chiriac Dumitru Daniel Herea Gabriela Ciobanu |
| author_facet | Maria Harja Gabriela Buema Nicoleta Lupu Horia Chiriac Dumitru Daniel Herea Gabriela Ciobanu |
| author_sort | Maria Harja |
| collection | DOAJ |
| description | Fly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area, and vibrating sample magnetometer (VSM). Batch adsorption experiments were employed in order to investigate the effects of adsorbent dose, initial Cu (II) concentration and contact time over adsorption efficiency. The experimental isotherms were modeled using Langmuir (four types of its linearization), Freundlich, Temkin, and Harkins–Jura isotherm models. The fits of the results are estimated according to the Langmuir isotherm, with a maximum adsorption capacity of 17.39 mg/g. The pseudo-second-order model was able to describe kinetic results. The data obtained throughout the study prove that this novel material represents a potential low-cost adsorbent for copper adsorption with improved adsorption capacity and magnetic separation capability compared with raw fly ash. |
| first_indexed | 2024-03-10T13:46:18Z |
| format | Article |
| id | doaj.art-342b66f08c084b739d0307dd4e52ee03 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T13:46:18Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-342b66f08c084b739d0307dd4e52ee032023-11-21T02:32:43ZengMDPI AGMaterials1996-19442020-12-011416310.3390/ma14010063Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from WastewaterMaria Harja0Gabriela Buema1Nicoleta Lupu2Horia Chiriac3Dumitru Daniel Herea4Gabriela Ciobanu5Chemical Engineering Department, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 73 Prof.dr.doc. Dimitrie Mangeron Street, 700050 Iasi, RomaniaNational Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, RomaniaNational Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, RomaniaNational Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, RomaniaNational Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, RomaniaChemical Engineering Department, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 73 Prof.dr.doc. Dimitrie Mangeron Street, 700050 Iasi, RomaniaFly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area, and vibrating sample magnetometer (VSM). Batch adsorption experiments were employed in order to investigate the effects of adsorbent dose, initial Cu (II) concentration and contact time over adsorption efficiency. The experimental isotherms were modeled using Langmuir (four types of its linearization), Freundlich, Temkin, and Harkins–Jura isotherm models. The fits of the results are estimated according to the Langmuir isotherm, with a maximum adsorption capacity of 17.39 mg/g. The pseudo-second-order model was able to describe kinetic results. The data obtained throughout the study prove that this novel material represents a potential low-cost adsorbent for copper adsorption with improved adsorption capacity and magnetic separation capability compared with raw fly ash.https://www.mdpi.com/1996-1944/14/1/63copper ions adsorptionFe<sub>3</sub>O<sub>4</sub>fly ashisothermskinetic modelswastewater |
| spellingShingle | Maria Harja Gabriela Buema Nicoleta Lupu Horia Chiriac Dumitru Daniel Herea Gabriela Ciobanu Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater Materials copper ions adsorption Fe<sub>3</sub>O<sub>4</sub> fly ash isotherms kinetic models wastewater |
| title | Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater |
| title_full | Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater |
| title_fullStr | Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater |
| title_full_unstemmed | Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater |
| title_short | Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater |
| title_sort | fly ash coated with magnetic materials improved adsorbent for cu ii removal from wastewater |
| topic | copper ions adsorption Fe<sub>3</sub>O<sub>4</sub> fly ash isotherms kinetic models wastewater |
| url | https://www.mdpi.com/1996-1944/14/1/63 |
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