Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods
The organic synthetic dyes employed in industries are carcinogenic and harmful. Dyes must be removed from wastewater to limit or eliminate their presence before dumping into the natural environment. The current study aims to investigate the use of MgO nanoparticles to eliminate basic fuchsine (BF),...
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MDPI AG
2022-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/6/1023 |
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| author | Monira Galal Ghoniem Fatima Adam Mohamed Ali Babiker Yagoub Abdulkhair Mohamed Rahmt Allah Elamin Arwa Mofareh Alqahtani Seyfeddine Rahali Mohamed Ali Ben Aissa |
| author_facet | Monira Galal Ghoniem Fatima Adam Mohamed Ali Babiker Yagoub Abdulkhair Mohamed Rahmt Allah Elamin Arwa Mofareh Alqahtani Seyfeddine Rahali Mohamed Ali Ben Aissa |
| author_sort | Monira Galal Ghoniem |
| collection | DOAJ |
| description | The organic synthetic dyes employed in industries are carcinogenic and harmful. Dyes must be removed from wastewater to limit or eliminate their presence before dumping into the natural environment. The current study aims to investigate the use of MgO nanoparticles to eliminate basic fuchsine (BF), as a model cationic dye pollutant, from wastewater. The MgO nanorods were synthesized through a coprecipitation method. The obtained nanocomposite was characterized using various techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Brunauer–Emmett–Teller (BET), and FTIR spectroscopy. It was found that the variation of dye concentration and pH influenced the removal of BF by MgO. The adsorption capacity of 493.90 mg/g is achieved under optimum operating conditions (pH = 11, contact time = 236 min, and initial BF concentration = 200 ppm). Pseudo-second-order adsorption kinetics and Freundlich isotherm models best fitted BF sorption onto MgO nanorods. The BF sorption mechanism is associated with the electrostatic attractions and hydrogen bond between the O–H group of MgO and the NH<sub>2</sub> groups of BF, as indicated by the pH, isotherms, and FTIR studies. The reusability study indicates that MgO was effectively used to eliminate BF in at least four continuous cycles. The investigation of MgO with different dyes suggests the high adsorption selectivity of BF, crystal violet (CV), and malachite green (MG) dyes compared with methyl orange (MO) dye. Overall, MgO nanorods can act as a potential and promising adsorbent for the efficient and rapid removal of cationic dyes (CV, MG, and BF) from wastewater. |
| first_indexed | 2024-03-09T13:06:23Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T13:06:23Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-23f39f872562468aaabbe902a3bb48852023-11-30T21:47:08ZengMDPI AGNanomaterials2079-49912022-03-01126102310.3390/nano12061023Highly Selective Removal of Cationic Dyes from Wastewater by MgO NanorodsMonira Galal Ghoniem0Fatima Adam Mohamed Ali1Babiker Yagoub Abdulkhair2Mohamed Rahmt Allah Elamin3Arwa Mofareh Alqahtani4Seyfeddine Rahali5Mohamed Ali Ben Aissa6Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi ArabiaDepartment of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi ArabiaDepartment of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi ArabiaDepartment of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi ArabiaDepartment of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi ArabiaDepartment of Chemistry, College of Science and Arts, Qassim University, Ar Rass, Saudi ArabiaDepartment of Chemistry, College of Science and Arts, Qassim University, Ar Rass, Saudi ArabiaThe organic synthetic dyes employed in industries are carcinogenic and harmful. Dyes must be removed from wastewater to limit or eliminate their presence before dumping into the natural environment. The current study aims to investigate the use of MgO nanoparticles to eliminate basic fuchsine (BF), as a model cationic dye pollutant, from wastewater. The MgO nanorods were synthesized through a coprecipitation method. The obtained nanocomposite was characterized using various techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Brunauer–Emmett–Teller (BET), and FTIR spectroscopy. It was found that the variation of dye concentration and pH influenced the removal of BF by MgO. The adsorption capacity of 493.90 mg/g is achieved under optimum operating conditions (pH = 11, contact time = 236 min, and initial BF concentration = 200 ppm). Pseudo-second-order adsorption kinetics and Freundlich isotherm models best fitted BF sorption onto MgO nanorods. The BF sorption mechanism is associated with the electrostatic attractions and hydrogen bond between the O–H group of MgO and the NH<sub>2</sub> groups of BF, as indicated by the pH, isotherms, and FTIR studies. The reusability study indicates that MgO was effectively used to eliminate BF in at least four continuous cycles. The investigation of MgO with different dyes suggests the high adsorption selectivity of BF, crystal violet (CV), and malachite green (MG) dyes compared with methyl orange (MO) dye. Overall, MgO nanorods can act as a potential and promising adsorbent for the efficient and rapid removal of cationic dyes (CV, MG, and BF) from wastewater.https://www.mdpi.com/2079-4991/12/6/1023MgO nanomaterialsbasic fuchsine eliminationpH influencekinetics experiment |
| spellingShingle | Monira Galal Ghoniem Fatima Adam Mohamed Ali Babiker Yagoub Abdulkhair Mohamed Rahmt Allah Elamin Arwa Mofareh Alqahtani Seyfeddine Rahali Mohamed Ali Ben Aissa Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods Nanomaterials MgO nanomaterials basic fuchsine elimination pH influence kinetics experiment |
| title | Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods |
| title_full | Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods |
| title_fullStr | Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods |
| title_full_unstemmed | Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods |
| title_short | Highly Selective Removal of Cationic Dyes from Wastewater by MgO Nanorods |
| title_sort | highly selective removal of cationic dyes from wastewater by mgo nanorods |
| topic | MgO nanomaterials basic fuchsine elimination pH influence kinetics experiment |
| url | https://www.mdpi.com/2079-4991/12/6/1023 |
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