Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium Kinetics
This work reports the preparation and application of Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN nanocomposite for the removal of Cr<sup>3+</sup>, Cu<sup>2+</sup>, Al<sup>3+</sup>, Ba<sup>2+</sup>, Zn<sup>2...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/7/5/133 |
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| author | Denga Ramutshatsha-Makhwedzha Jane Catherine Ngila Patrick G. Ndungu Philiswa Nosizo Nomngongo |
| author_facet | Denga Ramutshatsha-Makhwedzha Jane Catherine Ngila Patrick G. Ndungu Philiswa Nosizo Nomngongo |
| author_sort | Denga Ramutshatsha-Makhwedzha |
| collection | DOAJ |
| description | This work reports the preparation and application of Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN nanocomposite for the removal of Cr<sup>3+</sup>, Cu<sup>2+</sup>, Al<sup>3+</sup>, Ba<sup>2+</sup>, Zn<sup>2+</sup>, Ni<sup>2+</sup>, Mn<sup>2+</sup>, Co<sup>2+</sup>, and Ti<sup>3+</sup> from seawater. X-ray diffraction (XRD), scanning electron microscope/energy dispersive X-ray spectroscopy (SEM/EDS), transmission electron microscope (TEM), and Brunauer-Emmett-Teller (BET) characterized the synthesized composite. The following experimental parameters (Extraction time, adsorbent mass and pH) affecting the removal of major and trace metals were optimized using response surface methodology (RSM). The applicability of the RSM model was verified by performing the confirmation experiment using the optimal condition and the removal efficiency ranged from 90% to 97%, implying that the model was valid. The adsorption kinetic data was described by the pseudo-second order model. The applicability of the materials was tested on real seawater samples (initial concentration ranging from 0.270−203 µg L<sup>−1</sup>) and the results showed satisfactory percentage efficiency removal that range from 98% to 99.9%. The maximum adsorption capacities were found to be 4.36, 7.20, 2.23, 6.60, 5.06, 2.60, 6.79, 6.65 and 3.00 mg g<sup>−1</sup>, for Cr<sup>3+</sup>, Cu<sup>2+</sup>, Al<sup>3+</sup>, Ba<sup>2+</sup>, Zn<sup>2+</sup>, Ni<sup>2+</sup>, Mn<sup>2+</sup>, Co<sup>2+</sup>, and Ti<sup>4+</sup>, respectively. |
| first_indexed | 2024-12-13T18:34:00Z |
| format | Article |
| id | doaj.art-cf5c75f306e546a6b795306f2b09f5f7 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-12-13T18:34:00Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-cf5c75f306e546a6b795306f2b09f5f72022-12-21T23:35:24ZengMDPI AGJournal of Marine Science and Engineering2077-13122019-05-017513310.3390/jmse7050133jmse7050133Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium KineticsDenga Ramutshatsha-Makhwedzha0Jane Catherine Ngila1Patrick G. Ndungu2Philiswa Nosizo Nomngongo3Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg 17011, South AfricaDepartment of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg 17011, South AfricaDepartment of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg 17011, South AfricaDepartment of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg 17011, South AfricaThis work reports the preparation and application of Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN nanocomposite for the removal of Cr<sup>3+</sup>, Cu<sup>2+</sup>, Al<sup>3+</sup>, Ba<sup>2+</sup>, Zn<sup>2+</sup>, Ni<sup>2+</sup>, Mn<sup>2+</sup>, Co<sup>2+</sup>, and Ti<sup>3+</sup> from seawater. X-ray diffraction (XRD), scanning electron microscope/energy dispersive X-ray spectroscopy (SEM/EDS), transmission electron microscope (TEM), and Brunauer-Emmett-Teller (BET) characterized the synthesized composite. The following experimental parameters (Extraction time, adsorbent mass and pH) affecting the removal of major and trace metals were optimized using response surface methodology (RSM). The applicability of the RSM model was verified by performing the confirmation experiment using the optimal condition and the removal efficiency ranged from 90% to 97%, implying that the model was valid. The adsorption kinetic data was described by the pseudo-second order model. The applicability of the materials was tested on real seawater samples (initial concentration ranging from 0.270−203 µg L<sup>−1</sup>) and the results showed satisfactory percentage efficiency removal that range from 98% to 99.9%. The maximum adsorption capacities were found to be 4.36, 7.20, 2.23, 6.60, 5.06, 2.60, 6.79, 6.65 and 3.00 mg g<sup>−1</sup>, for Cr<sup>3+</sup>, Cu<sup>2+</sup>, Al<sup>3+</sup>, Ba<sup>2+</sup>, Zn<sup>2+</sup>, Ni<sup>2+</sup>, Mn<sup>2+</sup>, Co<sup>2+</sup>, and Ti<sup>4+</sup>, respectively.https://www.mdpi.com/2077-1312/7/5/133in-situ synthesisFe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN nanocompositepotential toxic metalsadsorption desalinationequilibrium kinetics |
| spellingShingle | Denga Ramutshatsha-Makhwedzha Jane Catherine Ngila Patrick G. Ndungu Philiswa Nosizo Nomngongo Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium Kinetics Journal of Marine Science and Engineering in-situ synthesis Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN nanocomposite potential toxic metals adsorption desalination equilibrium kinetics |
| title | Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium Kinetics |
| title_full | Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium Kinetics |
| title_fullStr | Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium Kinetics |
| title_full_unstemmed | Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium Kinetics |
| title_short | Ultrasound Assisted Adsorptive Removal of Cr, Cu, Al, Ba, Zn, Ni, Mn, Co and Ti from Seawater Using Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN Nanocomposite: Equilibrium Kinetics |
| title_sort | ultrasound assisted adsorptive removal of cr cu al ba zn ni mn co and ti from seawater using fe sub 2 sub o sub 3 sub sio sub 2 sub pan nanocomposite equilibrium kinetics |
| topic | in-situ synthesis Fe<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-PAN nanocomposite potential toxic metals adsorption desalination equilibrium kinetics |
| url | https://www.mdpi.com/2077-1312/7/5/133 |
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