Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from Water
In this research, multi-walled carbon nanotubes (MWCNTs) were functionalized by oxidation with strong acids HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, and H<sub>2</sub>O<sub>2</sub>. Then, magnetite/MWCNTs nanocomposites were prepared an...
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MDPI AG
2021-09-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/19/5503 |
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| author | Thamer Adnan Abdullah Tatjána Juzsakova Rashed Taleb Rasheed Ali Dawood Salman Viktor Sebestyen Endre Domokos Brindusa Sluser Igor Cretescu |
| author_facet | Thamer Adnan Abdullah Tatjána Juzsakova Rashed Taleb Rasheed Ali Dawood Salman Viktor Sebestyen Endre Domokos Brindusa Sluser Igor Cretescu |
| author_sort | Thamer Adnan Abdullah |
| collection | DOAJ |
| description | In this research, multi-walled carbon nanotubes (MWCNTs) were functionalized by oxidation with strong acids HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, and H<sub>2</sub>O<sub>2</sub>. Then, magnetite/MWCNTs nanocomposites were prepared and polystyrene was added to prepare polystyrene/MWCNTs/magnetite (PS:MWCNTs:Fe) nanocomposites. The magnetic property of the prepared nano-adsorbent PS:MWCNTs:Fe was successfully checked. For characterization, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and BET surface area were used to determine the structure, morphology, chemical nature, functional groups, and surface area with pore volume of the prepared nano-adsorbents. The adsorption procedures were carried out for fresh MWCNTs, oxidized MWCNTs, MWCNTs-Fe, and PS:MWCNTs:Fe nanocomposites in batch experiments. Toluene standard was used to develop the calibration curve. The results of toluene adsorption experiments exhibited that the PS:MWCNTs:Fe nonabsorbent achieved the highest removal efficiency and adsorption capacity of toluene removal. The optimum parameters for toluene removal from water were found to be 60 min, 2 mg nano-sorbent dose, pH of 5, solution temperature of 35 °C at 50 mL volume, toluene concentration of 50 mg/L, and shaking speed of 240 rpm. The adsorption kinetic study of toluene followed the pseudo-second-order kinetics, with the best correlation (R<sup>2</sup>) value of 0.998, while the equilibrium adsorption study showed that the Langmuir isotherm was obeyed, which suggested that the adsorption is a monolayer and homogenous. |
| first_indexed | 2024-03-10T06:56:53Z |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:56:53Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-4be981b6e0b9497dac10b659865e791d2023-11-22T16:23:00ZengMDPI AGMaterials1996-19442021-09-011419550310.3390/ma14195503Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from WaterThamer Adnan Abdullah0Tatjána Juzsakova1Rashed Taleb Rasheed2Ali Dawood Salman3Viktor Sebestyen4Endre Domokos5Brindusa Sluser6Igor Cretescu7Sustainability Solutions Research Laboratory, Faculty of Engineering, University of Pannonia, 8200 Veszprém, HungarySustainability Solutions Research Laboratory, Faculty of Engineering, University of Pannonia, 8200 Veszprém, HungaryChemistry Branch, Applied Sciences Department, University of Technology, Baghdad 10001, IraqSustainability Solutions Research Laboratory, Faculty of Engineering, University of Pannonia, 8200 Veszprém, HungarySustainability Solutions Research Laboratory, Faculty of Engineering, University of Pannonia, 8200 Veszprém, HungarySustainability Solutions Research Laboratory, Faculty of Engineering, University of Pannonia, 8200 Veszprém, HungaryFaculty Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 73, Blvd. D. Mangeron, 700050 Iasi, RomaniaFaculty Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 73, Blvd. D. Mangeron, 700050 Iasi, RomaniaIn this research, multi-walled carbon nanotubes (MWCNTs) were functionalized by oxidation with strong acids HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, and H<sub>2</sub>O<sub>2</sub>. Then, magnetite/MWCNTs nanocomposites were prepared and polystyrene was added to prepare polystyrene/MWCNTs/magnetite (PS:MWCNTs:Fe) nanocomposites. The magnetic property of the prepared nano-adsorbent PS:MWCNTs:Fe was successfully checked. For characterization, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and BET surface area were used to determine the structure, morphology, chemical nature, functional groups, and surface area with pore volume of the prepared nano-adsorbents. The adsorption procedures were carried out for fresh MWCNTs, oxidized MWCNTs, MWCNTs-Fe, and PS:MWCNTs:Fe nanocomposites in batch experiments. Toluene standard was used to develop the calibration curve. The results of toluene adsorption experiments exhibited that the PS:MWCNTs:Fe nonabsorbent achieved the highest removal efficiency and adsorption capacity of toluene removal. The optimum parameters for toluene removal from water were found to be 60 min, 2 mg nano-sorbent dose, pH of 5, solution temperature of 35 °C at 50 mL volume, toluene concentration of 50 mg/L, and shaking speed of 240 rpm. The adsorption kinetic study of toluene followed the pseudo-second-order kinetics, with the best correlation (R<sup>2</sup>) value of 0.998, while the equilibrium adsorption study showed that the Langmuir isotherm was obeyed, which suggested that the adsorption is a monolayer and homogenous.https://www.mdpi.com/1996-1944/14/19/5503nanocompositestoluene removalwater treatmentnanomaterialspolystyrenemagnetite |
| spellingShingle | Thamer Adnan Abdullah Tatjána Juzsakova Rashed Taleb Rasheed Ali Dawood Salman Viktor Sebestyen Endre Domokos Brindusa Sluser Igor Cretescu Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from Water Materials nanocomposites toluene removal water treatment nanomaterials polystyrene magnetite |
| title | Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from Water |
| title_full | Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from Water |
| title_fullStr | Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from Water |
| title_full_unstemmed | Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from Water |
| title_short | Polystyrene-Fe<sub>3</sub>O<sub>4</sub>-MWCNTs Nanocomposites for Toluene Removal from Water |
| title_sort | polystyrene fe sub 3 sub o sub 4 sub mwcnts nanocomposites for toluene removal from water |
| topic | nanocomposites toluene removal water treatment nanomaterials polystyrene magnetite |
| url | https://www.mdpi.com/1996-1944/14/19/5503 |
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