Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water
This work investigated the effectiveness of zerovalent iron and Fe/Ni bimetallic nanoparticles in the treatment of water polluted by a high concentration of nitrates. Nanoparticle synthesis was carried out by a sodium borohydride reduction method in the presence of sodium oleate as a surfactant. The...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/9/8/1130 |
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| author | Gunay G. Valiyeva Irene Bavasso Luca Di Palma Sevinj R. Hajiyeva Mahammadali A. Ramazanov Flora V. Hajiyeva |
| author_facet | Gunay G. Valiyeva Irene Bavasso Luca Di Palma Sevinj R. Hajiyeva Mahammadali A. Ramazanov Flora V. Hajiyeva |
| author_sort | Gunay G. Valiyeva |
| collection | DOAJ |
| description | This work investigated the effectiveness of zerovalent iron and Fe/Ni bimetallic nanoparticles in the treatment of water polluted by a high concentration of nitrates. Nanoparticle synthesis was carried out by a sodium borohydride reduction method in the presence of sodium oleate as a surfactant. The particles were characterized by XRD and SEM. Batch experiments were conducted on water samples contaminated by 300 mg L<sup>−1</sup> of nitrate. The parameters investigated were the Fe/Ni dosage (0.05, 0.1, 0.2, 0.3, and 0.4 g L<sup>−1</sup>) and the reaction pH (unbuffered; buffered at pH = 3; initial pH = 3, 5, and 10). The results showed that almost complete nitrate removal (>99.8%) was always achieved after 15 min at a concentration of bimetallic nanoparticles higher than 0.2 g L<sup>−1</sup>. The optimization of bimetallic nanoparticle dosage was carried out at a fixed pH. Kinetic study tests were then performed at different temperatures to assess the effect of temperature on the nitrate removal rate. By fixing the pH at acidic values and with an operating temperature of 303 K, nitrates were completely removed after 1 min of treatment. |
| first_indexed | 2024-12-19T06:50:28Z |
| format | Article |
| id | doaj.art-9a5bfe9341f146d8b6bf43b670cfbe55 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-19T06:50:28Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-9a5bfe9341f146d8b6bf43b670cfbe552022-12-21T20:31:45ZengMDPI AGNanomaterials2079-49912019-08-0198113010.3390/nano9081130nano9081130Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from WaterGunay G. Valiyeva0Irene Bavasso1Luca Di Palma2Sevinj R. Hajiyeva3Mahammadali A. Ramazanov4Flora V. Hajiyeva5Department of Ecological Chemistry, Faculty of Ecology and Soil Science, Baku State University, Baku AZ1000, AzerbaijanDepartment of Chemical Engineering Materials & Environment, Sapienza University of Rome, Via Eudossiana, 00184 Rome, ItalyDepartment of Chemical Engineering Materials & Environment, Sapienza University of Rome, Via Eudossiana, 00184 Rome, ItalyDepartment of Ecological Chemistry, Faculty of Ecology and Soil Science, Baku State University, Baku AZ1000, AzerbaijanDepartment of Chemical Physics of Nanomaterials, Faculty of Physics, Baku State University, Baku AZ1000, AzerbaijanDepartment of Chemical Physics of Nanomaterials, Faculty of Physics, Baku State University, Baku AZ1000, AzerbaijanThis work investigated the effectiveness of zerovalent iron and Fe/Ni bimetallic nanoparticles in the treatment of water polluted by a high concentration of nitrates. Nanoparticle synthesis was carried out by a sodium borohydride reduction method in the presence of sodium oleate as a surfactant. The particles were characterized by XRD and SEM. Batch experiments were conducted on water samples contaminated by 300 mg L<sup>−1</sup> of nitrate. The parameters investigated were the Fe/Ni dosage (0.05, 0.1, 0.2, 0.3, and 0.4 g L<sup>−1</sup>) and the reaction pH (unbuffered; buffered at pH = 3; initial pH = 3, 5, and 10). The results showed that almost complete nitrate removal (>99.8%) was always achieved after 15 min at a concentration of bimetallic nanoparticles higher than 0.2 g L<sup>−1</sup>. The optimization of bimetallic nanoparticle dosage was carried out at a fixed pH. Kinetic study tests were then performed at different temperatures to assess the effect of temperature on the nitrate removal rate. By fixing the pH at acidic values and with an operating temperature of 303 K, nitrates were completely removed after 1 min of treatment.https://www.mdpi.com/2079-4991/9/8/1130nitratewastewater treatmentbimetallic nanoparticleskinetics |
| spellingShingle | Gunay G. Valiyeva Irene Bavasso Luca Di Palma Sevinj R. Hajiyeva Mahammadali A. Ramazanov Flora V. Hajiyeva Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water Nanomaterials nitrate wastewater treatment bimetallic nanoparticles kinetics |
| title | Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water |
| title_full | Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water |
| title_fullStr | Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water |
| title_full_unstemmed | Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water |
| title_short | Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water |
| title_sort | synthesis of fe ni bimetallic nanoparticles and application to the catalytic removal of nitrates from water |
| topic | nitrate wastewater treatment bimetallic nanoparticles kinetics |
| url | https://www.mdpi.com/2079-4991/9/8/1130 |
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