Surface Complexes of Cr(VI) by Eucalyptus Barks
The sorption mechanism of hexavalent chromium sorption on eucalyptus barks was evaluated as a function of solution pH for different adsorbent dosages, surface coverage, and the amount of adsorbent. The chromium retention was evaluated based on the distribution coefficient (D), and this retention is...
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| Format: | Article |
| Language: | English |
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Department of Chemistry, Universitas Gadjah Mada
2022-08-01
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| Series: | Indonesian Journal of Chemistry |
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| Online Access: | https://jurnal.ugm.ac.id/ijc/article/view/72358 |
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| author | Hind Khalil Fatima Ezzahra Maarouf Mariam Khalil Sanaa Saoiabi Saidati Bouhlassa Ahmed Saoiabi Mhamed Hmamou Khalil Azzaoui |
| author_facet | Hind Khalil Fatima Ezzahra Maarouf Mariam Khalil Sanaa Saoiabi Saidati Bouhlassa Ahmed Saoiabi Mhamed Hmamou Khalil Azzaoui |
| author_sort | Hind Khalil |
| collection | DOAJ |
| description | The sorption mechanism of hexavalent chromium sorption on eucalyptus barks was evaluated as a function of solution pH for different adsorbent dosages, surface coverage, and the amount of adsorbent. The chromium retention was evaluated based on the distribution coefficient (D), and this retention is attributed to species, which is predominant between pH 1 and 6.5. The biosorption of Cr(VI) ions onto barks achieved at pH 2.0 in the highest sorbet conditions corresponding to [Cr(VI)] = 10–5 mol (V = 100 mL) is examined for various surface coverage. The surface complexes formed between chromate and eucalyptus barks were found to be > S (HCrO4) and > S (CrO4). Logarithmic stability for log K1–1 and the log K10 values of the complexes were measured and found to be -5.93 in acidic medium and -0.76 in alkaline medium, respectively. Pointed out that the adsorption of Cr(VI) on eucalyptus bark was greater than 90% in all cases, Cr(VI) recovery is strongly acidic dependent and shows maximum retention, for various sorbent amounts, at pH around 2, and this retention is attributed to species, which is predominant between pH 1 and 6.5, the morphological surface of eucalyptus barks were examined by Scanning Electron Microscope (SEM) connected to a micro analyzer EDS. |
| first_indexed | 2024-04-12T06:18:53Z |
| format | Article |
| id | doaj.art-0885933fa32e4571b5b9c9ee901c9b74 |
| institution | Directory Open Access Journal |
| issn | 1411-9420 2460-1578 |
| language | English |
| last_indexed | 2024-04-12T06:18:53Z |
| publishDate | 2022-08-01 |
| publisher | Department of Chemistry, Universitas Gadjah Mada |
| record_format | Article |
| series | Indonesian Journal of Chemistry |
| spelling | doaj.art-0885933fa32e4571b5b9c9ee901c9b742022-12-22T03:44:23ZengDepartment of Chemistry, Universitas Gadjah MadaIndonesian Journal of Chemistry1411-94202460-15782022-08-0122496597810.22146/ijc.7235832227Surface Complexes of Cr(VI) by Eucalyptus BarksHind Khalil0Fatima Ezzahra Maarouf1Mariam Khalil2Sanaa Saoiabi3Saidati Bouhlassa4Ahmed Saoiabi5Mhamed Hmamou6Khalil Azzaoui7Laboratory of Applied Chemistry of Materials (LCAM), Department of Chemistry, Faculty of Sciences, Mohammed V University,4 Ibn Batouta Avenue in Rabat 1014, MoroccoLaboratory of Applied Chemistry of Materials (LCAM), Department of Chemistry, Faculty of Sciences, Mohammed V University,4 Ibn Batouta Avenue in Rabat 1014, MoroccoLaboratory of Applied Chemistry of Materials (LCAM), Department of Chemistry, Faculty of Sciences, Mohammed V University,4 Ibn Batouta Avenue in Rabat 1014, MoroccoLaboratory of Applied Chemistry of Materials (LCAM), Department of Chemistry, Faculty of Sciences, Mohammed V University,4 Ibn Batouta Avenue in Rabat 1014, MoroccoLaboratory of Applied Chemistry of Materials (LCAM), Department of Chemistry, Faculty of Sciences, Mohammed V University,4 Ibn Batouta Avenue in Rabat 1014, MoroccoLaboratory of Applied Chemistry of Materials (LCAM), Department of Chemistry, Faculty of Sciences, Mohammed V University,4 Ibn Batouta Avenue in Rabat 1014, MoroccoLaboratory of Applied Chemistry of Materials (LCAM), Department of Chemistry, Faculty of Sciences, Mohammed V University,4 Ibn Batouta Avenue in Rabat 1014, MoroccoLaboratory of Applied Chemistry and Environment (LCAE), Department of Chemistry, Faculty of Sciences, University Mohamed I, P.O. Box 717, Oujda 60000, MoroccoThe sorption mechanism of hexavalent chromium sorption on eucalyptus barks was evaluated as a function of solution pH for different adsorbent dosages, surface coverage, and the amount of adsorbent. The chromium retention was evaluated based on the distribution coefficient (D), and this retention is attributed to species, which is predominant between pH 1 and 6.5. The biosorption of Cr(VI) ions onto barks achieved at pH 2.0 in the highest sorbet conditions corresponding to [Cr(VI)] = 10–5 mol (V = 100 mL) is examined for various surface coverage. The surface complexes formed between chromate and eucalyptus barks were found to be > S (HCrO4) and > S (CrO4). Logarithmic stability for log K1–1 and the log K10 values of the complexes were measured and found to be -5.93 in acidic medium and -0.76 in alkaline medium, respectively. Pointed out that the adsorption of Cr(VI) on eucalyptus bark was greater than 90% in all cases, Cr(VI) recovery is strongly acidic dependent and shows maximum retention, for various sorbent amounts, at pH around 2, and this retention is attributed to species, which is predominant between pH 1 and 6.5, the morphological surface of eucalyptus barks were examined by Scanning Electron Microscope (SEM) connected to a micro analyzer EDS.https://jurnal.ugm.ac.id/ijc/article/view/72358chromium(vi)eucalyptus barkssurface complexesadsorptionsurface charge |
| spellingShingle | Hind Khalil Fatima Ezzahra Maarouf Mariam Khalil Sanaa Saoiabi Saidati Bouhlassa Ahmed Saoiabi Mhamed Hmamou Khalil Azzaoui Surface Complexes of Cr(VI) by Eucalyptus Barks Indonesian Journal of Chemistry chromium(vi) eucalyptus barks surface complexes adsorption surface charge |
| title | Surface Complexes of Cr(VI) by Eucalyptus Barks |
| title_full | Surface Complexes of Cr(VI) by Eucalyptus Barks |
| title_fullStr | Surface Complexes of Cr(VI) by Eucalyptus Barks |
| title_full_unstemmed | Surface Complexes of Cr(VI) by Eucalyptus Barks |
| title_short | Surface Complexes of Cr(VI) by Eucalyptus Barks |
| title_sort | surface complexes of cr vi by eucalyptus barks |
| topic | chromium(vi) eucalyptus barks surface complexes adsorption surface charge |
| url | https://jurnal.ugm.ac.id/ijc/article/view/72358 |
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