Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability Potential
A new low-cost material with a polymeric base formed from sodium silicate was developed. The material presents a nanostructured, highly rich iron surface with a large phosphorus retention capacity and potential reuse as a crop fertilizer. In the present study, we demonstrate that iron is the element...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/7/1167 |
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| author | David Gómez-Carnota José L. Barriada Pilar Rodríguez-Barro Manuel E. Sastre de Vicente Roberto Herrero |
| author_facet | David Gómez-Carnota José L. Barriada Pilar Rodríguez-Barro Manuel E. Sastre de Vicente Roberto Herrero |
| author_sort | David Gómez-Carnota |
| collection | DOAJ |
| description | A new low-cost material with a polymeric base formed from sodium silicate was developed. The material presents a nanostructured, highly rich iron surface with a large phosphorus retention capacity and potential reuse as a crop fertilizer. In the present study, we demonstrate that iron is the element that acts as an adsorbent for phosphate, while the polymeric base functions exclusively as a support for iron. The iron is uniformly adsorbed on the surface of the material, forming nanostructures, which ensure that iron works similarly to nanoparticles in solution but avoid other problems, such as particle agglomeration or the difficulty of separating them after the removal process. Materials were characterised by SEM, EDS, N<sub>2</sub> sorption, and image processing, and the effect of pH, ionic strength, and temperature was studied. Sorption kinetics were analysed using Boyd’s diffusion model, and adsorption equilibria were studied using several adsorption models. A maximum iron adsorption on the polymeric base of 23.9 ± 0.3 mg Fe∙g<sup>−1</sup> was found, while maximum phosphorus adsorption was 366 ± 21 mg P∙g<sup>−1</sup> Fe. Thus, phosphorus is recovered from the aqueous medium with an inexpensive material that has the potential to be used directly as a fertilizer. |
| first_indexed | 2024-03-11T05:29:11Z |
| format | Article |
| id | doaj.art-d6f9aa45d48440e792fd5d262fd64a47 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T05:29:11Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-d6f9aa45d48440e792fd5d262fd64a472023-11-17T17:16:39ZengMDPI AGNanomaterials2079-49912023-03-01137116710.3390/nano13071167Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability PotentialDavid Gómez-Carnota0José L. Barriada1Pilar Rodríguez-Barro2Manuel E. Sastre de Vicente3Roberto Herrero4Departamento de Química and CICA—Centro Interdisciplinar de Química e Bioloxía, Universidade da Coruña, As Carballeiras, s/n, 15071 A Coruña, SpainDepartamento de Química and CICA—Centro Interdisciplinar de Química e Bioloxía, Universidade da Coruña, As Carballeiras, s/n, 15071 A Coruña, SpainDepartamento de Química and CICA—Centro Interdisciplinar de Química e Bioloxía, Universidade da Coruña, As Carballeiras, s/n, 15071 A Coruña, SpainDepartamento de Química and CICA—Centro Interdisciplinar de Química e Bioloxía, Universidade da Coruña, As Carballeiras, s/n, 15071 A Coruña, SpainDepartamento de Química and CICA—Centro Interdisciplinar de Química e Bioloxía, Universidade da Coruña, As Carballeiras, s/n, 15071 A Coruña, SpainA new low-cost material with a polymeric base formed from sodium silicate was developed. The material presents a nanostructured, highly rich iron surface with a large phosphorus retention capacity and potential reuse as a crop fertilizer. In the present study, we demonstrate that iron is the element that acts as an adsorbent for phosphate, while the polymeric base functions exclusively as a support for iron. The iron is uniformly adsorbed on the surface of the material, forming nanostructures, which ensure that iron works similarly to nanoparticles in solution but avoid other problems, such as particle agglomeration or the difficulty of separating them after the removal process. Materials were characterised by SEM, EDS, N<sub>2</sub> sorption, and image processing, and the effect of pH, ionic strength, and temperature was studied. Sorption kinetics were analysed using Boyd’s diffusion model, and adsorption equilibria were studied using several adsorption models. A maximum iron adsorption on the polymeric base of 23.9 ± 0.3 mg Fe∙g<sup>−1</sup> was found, while maximum phosphorus adsorption was 366 ± 21 mg P∙g<sup>−1</sup> Fe. Thus, phosphorus is recovered from the aqueous medium with an inexpensive material that has the potential to be used directly as a fertilizer.https://www.mdpi.com/2079-4991/13/7/1167phosphorusadsorptionnanostructuresrecoveryironenvironmental remediation |
| spellingShingle | David Gómez-Carnota José L. Barriada Pilar Rodríguez-Barro Manuel E. Sastre de Vicente Roberto Herrero Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability Potential Nanomaterials phosphorus adsorption nanostructures recovery iron environmental remediation |
| title | Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability Potential |
| title_full | Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability Potential |
| title_fullStr | Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability Potential |
| title_full_unstemmed | Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability Potential |
| title_short | Sustainable Low-Cost Phosphorus Recovery Using Nanostructured Materials with Reusability Potential |
| title_sort | sustainable low cost phosphorus recovery using nanostructured materials with reusability potential |
| topic | phosphorus adsorption nanostructures recovery iron environmental remediation |
| url | https://www.mdpi.com/2079-4991/13/7/1167 |
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