Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal
A novel beads adsorbent, consisting of calcium alginate entrapped on magnetic nanoparticles functionalized with methionine (MFMNABs), was developed for effective elimination of arsenic from water. The material was characterized by FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electr...
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MDPI AG
2021-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/5/1345 |
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| author | Surbhi Lilhare Sunitha B. Mathew Ajaya K. Singh Sónia A. C. Carabineiro |
| author_facet | Surbhi Lilhare Sunitha B. Mathew Ajaya K. Singh Sónia A. C. Carabineiro |
| author_sort | Surbhi Lilhare |
| collection | DOAJ |
| description | A novel beads adsorbent, consisting of calcium alginate entrapped on magnetic nanoparticles functionalized with methionine (MFMNABs), was developed for effective elimination of arsenic from water. The material was characterized by FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopic), XRD (X-ray Diffraction) and TEM (Transmission Electron Microscopy). The arsenic removal capacity of the material was studied by altering variables such as pH of the solution, contact time, adsorbent dose and adsorbate concentration. The maximal removal of As(III) was 99.56% under optimal conditions with an equilibrium time of 110 min and pH 7.0–7.5. The adsorption followed a second order kinetics and data best fitted the Langmuir isotherm with a correlation coefficient of R<sup>2</sup> = 0.9890 and adsorption capacity (q<sub>m</sub>) of 6.6533 mg/g. The thermodynamic study showed entropy change (∆S) and enthalpy change (∆H) to be 34.32 J mol<sup>−1</sup> K and 5.25 kJ mol<sup>−1</sup>, respectively. This study proved that it was feasible to treat an As(III) solution with MFMNABs. The synthesized adsorbent was cost-effective, environmentally friendly and versatile, compared to other adsorbents. The adsorption study was carried by low cost spectrophotometric method using N- bromosuccinimide and rhodamine-B developed in our laboratory. |
| first_indexed | 2024-03-10T11:13:50Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T11:13:50Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj.art-0ee57c2ef4bc4ab78bdcd201acf6277f2023-11-21T20:33:14ZengMDPI AGNanomaterials2079-49912021-05-01115134510.3390/nano11051345Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic RemovalSurbhi Lilhare0Sunitha B. Mathew1Ajaya K. Singh2Sónia A. C. Carabineiro3Department of Chemistry, Govt. V. Y. T. PG Autonomous College, Durg, Chhattisgarh 491001, IndiaDepartment of Chemistry, Govt. V. Y. T. PG Autonomous College, Durg, Chhattisgarh 491001, IndiaDepartment of Chemistry, Govt. V. Y. T. PG Autonomous College, Durg, Chhattisgarh 491001, IndiaLAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, PortugalA novel beads adsorbent, consisting of calcium alginate entrapped on magnetic nanoparticles functionalized with methionine (MFMNABs), was developed for effective elimination of arsenic from water. The material was characterized by FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopic), XRD (X-ray Diffraction) and TEM (Transmission Electron Microscopy). The arsenic removal capacity of the material was studied by altering variables such as pH of the solution, contact time, adsorbent dose and adsorbate concentration. The maximal removal of As(III) was 99.56% under optimal conditions with an equilibrium time of 110 min and pH 7.0–7.5. The adsorption followed a second order kinetics and data best fitted the Langmuir isotherm with a correlation coefficient of R<sup>2</sup> = 0.9890 and adsorption capacity (q<sub>m</sub>) of 6.6533 mg/g. The thermodynamic study showed entropy change (∆S) and enthalpy change (∆H) to be 34.32 J mol<sup>−1</sup> K and 5.25 kJ mol<sup>−1</sup>, respectively. This study proved that it was feasible to treat an As(III) solution with MFMNABs. The synthesized adsorbent was cost-effective, environmentally friendly and versatile, compared to other adsorbents. The adsorption study was carried by low cost spectrophotometric method using N- bromosuccinimide and rhodamine-B developed in our laboratory.https://www.mdpi.com/2079-4991/11/5/1345arsenic (III)adsorptionmagnetic nanoparticlesmethionine functionalizedcalcium alginatespectrophotometric method |
| spellingShingle | Surbhi Lilhare Sunitha B. Mathew Ajaya K. Singh Sónia A. C. Carabineiro Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal Nanomaterials arsenic (III) adsorption magnetic nanoparticles methionine functionalized calcium alginate spectrophotometric method |
| title | Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal |
| title_full | Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal |
| title_fullStr | Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal |
| title_full_unstemmed | Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal |
| title_short | Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal |
| title_sort | calcium alginate beads with entrapped iron oxide magnetic nanoparticles functionalized with methionine a versatile adsorbent for arsenic removal |
| topic | arsenic (III) adsorption magnetic nanoparticles methionine functionalized calcium alginate spectrophotometric method |
| url | https://www.mdpi.com/2079-4991/11/5/1345 |
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