Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from Wastewater
In this study, maghemite and magnetite nanoparticles were functionalized with cetyl trimethyl ammonium bromide(CTAB) surfactants, in order to obtain effective chromium removal from wastewater. X-ray diffractometry (XRD), transmission electron microscopy (TEM), and Fourier-transform infrared spectrop...
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Iranian Environmental Mutagen Society
2024-01-01
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| Series: | Journal of Water and Environmental Nanotechnology |
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| Online Access: | https://www.jwent.net/article_710768_2be1c0d7c93c2b110848579071fee069.pdf |
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| author | Mohamed Naous Ahmed Halfadji |
| author_facet | Mohamed Naous Ahmed Halfadji |
| author_sort | Mohamed Naous |
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| description | In this study, maghemite and magnetite nanoparticles were functionalized with cetyl trimethyl ammonium bromide(CTAB) surfactants, in order to obtain effective chromium removal from wastewater. X-ray diffractometry (XRD), transmission electron microscopy (TEM), and Fourier-transform infrared spectrophotometry (FTIR) were used to characterize the functionalized nanoparticles. Various parameters, including pH, initial chromium concentration, added salt, and adsorbent dose, were evaluated in batch experiments to evaluate chromium removal efficiency. Adsorbent dose and chromium ions show a synergistic relationship with pH and the chemical and electrostatic interactions between cationic surfactant and negatively charged Cr(VI) ions. In both types of functionalized nanoparticles, Cr(VI) was efficiently removed at low pH values with CTAB@MNPs, but the pH increased negatively impacted the removal process. Additionally, Fe3O4@CTAB mainly adsorbs chromium chemically, reducing Cr(VI) to Cr(III), with less impact from competitive ions compared with γ-Fe2O3@CTAB.At pH = 2, adsorbent dose = 5 g/L, and initial chromium concentration = 1 mg/L, maghemite@CTAB achieved a high chromium removal efficiency of 95%. In contrast, magnetite@CTAB achieved a chromium removal efficiency of 95.77% in 7 minutes and 30 seconds at pH = 4, adsorbent dose = 12 g/L, and initial chromium concentration = 98 mg/L. Notably, magnetite outperformed maghemite by a factor of 100 in chromium elimination, which can be attributed to the presence of two adsorption mechanisms, chemical and physisorption, in magnetite nanoparticles, whereas maghemite only had physisorption. |
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| id | doaj-art-dbf5a82910594d12a4ddb7ba1626fd64 |
| institution | Kabale University |
| issn | 2476-7204 2476-6615 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Iranian Environmental Mutagen Society |
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| series | Journal of Water and Environmental Nanotechnology |
| spelling | doaj-art-dbf5a82910594d12a4ddb7ba1626fd642025-01-12T09:34:19ZengIranian Environmental Mutagen SocietyJournal of Water and Environmental Nanotechnology2476-72042476-66152024-01-0191738910.22090/jwent.2024.01.05710768Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from WastewaterMohamed Naous0Ahmed Halfadji1Department of Sciences and Technology, Faculty of Applied Sciences, Ibn Khaldoun University of Tiaret, Tiare 14000, AlgeriaDepartment of Sciences and Technology, Faculty of Applied Sciences, Ibn Khaldoun University of Tiaret, Tiare 14000, AlgeriaIn this study, maghemite and magnetite nanoparticles were functionalized with cetyl trimethyl ammonium bromide(CTAB) surfactants, in order to obtain effective chromium removal from wastewater. X-ray diffractometry (XRD), transmission electron microscopy (TEM), and Fourier-transform infrared spectrophotometry (FTIR) were used to characterize the functionalized nanoparticles. Various parameters, including pH, initial chromium concentration, added salt, and adsorbent dose, were evaluated in batch experiments to evaluate chromium removal efficiency. Adsorbent dose and chromium ions show a synergistic relationship with pH and the chemical and electrostatic interactions between cationic surfactant and negatively charged Cr(VI) ions. In both types of functionalized nanoparticles, Cr(VI) was efficiently removed at low pH values with CTAB@MNPs, but the pH increased negatively impacted the removal process. Additionally, Fe3O4@CTAB mainly adsorbs chromium chemically, reducing Cr(VI) to Cr(III), with less impact from competitive ions compared with γ-Fe2O3@CTAB.At pH = 2, adsorbent dose = 5 g/L, and initial chromium concentration = 1 mg/L, maghemite@CTAB achieved a high chromium removal efficiency of 95%. In contrast, magnetite@CTAB achieved a chromium removal efficiency of 95.77% in 7 minutes and 30 seconds at pH = 4, adsorbent dose = 12 g/L, and initial chromium concentration = 98 mg/L. Notably, magnetite outperformed maghemite by a factor of 100 in chromium elimination, which can be attributed to the presence of two adsorption mechanisms, chemical and physisorption, in magnetite nanoparticles, whereas maghemite only had physisorption.https://www.jwent.net/article_710768_2be1c0d7c93c2b110848579071fee069.pdfmaghemite nanoparticlesmagnetite nanoparticlescetyl trimethyl ammonium bromide (ctab) surfactantschromium removaladsorption efficiency |
| spellingShingle | Mohamed Naous Ahmed Halfadji Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from Wastewater Journal of Water and Environmental Nanotechnology maghemite nanoparticles magnetite nanoparticles cetyl trimethyl ammonium bromide (ctab) surfactants chromium removal adsorption efficiency |
| title | Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from Wastewater |
| title_full | Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from Wastewater |
| title_fullStr | Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from Wastewater |
| title_full_unstemmed | Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from Wastewater |
| title_short | Comparative Adsorption Study of Functionalized Magnetite and Maghemite Nanoparticles Coated with CTAB Surfactant for Efficient Chromium Removal from Wastewater |
| title_sort | comparative adsorption study of functionalized magnetite and maghemite nanoparticles coated with ctab surfactant for efficient chromium removal from wastewater |
| topic | maghemite nanoparticles magnetite nanoparticles cetyl trimethyl ammonium bromide (ctab) surfactants chromium removal adsorption efficiency |
| url | https://www.jwent.net/article_710768_2be1c0d7c93c2b110848579071fee069.pdf |
| work_keys_str_mv | AT mohamednaous comparativeadsorptionstudyoffunctionalizedmagnetiteandmaghemitenanoparticlescoatedwithctabsurfactantforefficientchromiumremovalfromwastewater AT ahmedhalfadji comparativeadsorptionstudyoffunctionalizedmagnetiteandmaghemitenanoparticlescoatedwithctabsurfactantforefficientchromiumremovalfromwastewater |