Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye Removal
Wood-dust of <i>Dalbergia sisoo</i> (Sisau) derived activated carbon (AC) was successfully tested as an adsorbent material for the removal of rhodamine B dye from an aqueous solution. The AC was prepared in a laboratory by the carbonization of wood powder of <i>Dalbergia sisoo</...
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MDPI AG
2021-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/9/2217 |
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| author | Dibyashree Shrestha |
| author_facet | Dibyashree Shrestha |
| author_sort | Dibyashree Shrestha |
| collection | DOAJ |
| description | Wood-dust of <i>Dalbergia sisoo</i> (Sisau) derived activated carbon (AC) was successfully tested as an adsorbent material for the removal of rhodamine B dye from an aqueous solution. The AC was prepared in a laboratory by the carbonization of wood powder of <i>Dalbergia sisoo</i> at 400 °C in an inert atmosphere of N<sub>2</sub>, which was chemically activated with H<sub>3</sub>PO<sub>4</sub>. Several instrumental techniques have been employed to characterize the as-prepared AC (Db-s). Thermogravimetric analysis (TGA)/differential scanning colorimetry (DSC) confirmed that 400 °C was an appropriate temperature for the carbonization of raw wood powder. The FTIR spectra clearly confirmed the presence of oxygenated functional groups such as hydroxyl (–OH), aldehyde/ketone (–CHO/C=O) and ether (C–O–C) at its surface. The XRD pattern showed the amorphous structure of carbon having the 002 and 100 planes, whereas the Raman spectra clearly displayed G and D bands that further confirmed the amorphous nature of carbon. The SEM images displayed the high porosity, and the BET analysis revealed a high surface area of 1376 m<sup>2</sup> g<sup>−1</sup>, a pore volume of 1.2 cm<sup>3</sup> g<sup>−1</sup>, and a pore size of 4.06 nm with the coexistence of micropores and mesopores. The adsorption of dyes was performed by varying the dye concentration, pH, time, and the sample dose. The maximum percent of RhB dye removal by AC (Db-s) was 98.4% at an aqueous solution of 20 ppm, pH 8.5, an adsorbent dose of 0.03 g, and a time of 5 min. This study proved to be successful in addressing the local problem of wastewater pollution of garment and textile industrial effluents using locally available agro-waste of <i>Dalbergia sisoo</i>. |
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| last_indexed | 2024-03-10T07:23:31Z |
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| spelling | doaj.art-be639290b3954c10a99ce1661664643c2023-11-22T14:29:07ZengMDPI AGNanomaterials2079-49912021-08-01119221710.3390/nano11092217Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye RemovalDibyashree Shrestha0Department of Chemistry, Patan Multiple Campus, Tribhuvan University, Patan Dhoka, Lalitpur 44613, NepalWood-dust of <i>Dalbergia sisoo</i> (Sisau) derived activated carbon (AC) was successfully tested as an adsorbent material for the removal of rhodamine B dye from an aqueous solution. The AC was prepared in a laboratory by the carbonization of wood powder of <i>Dalbergia sisoo</i> at 400 °C in an inert atmosphere of N<sub>2</sub>, which was chemically activated with H<sub>3</sub>PO<sub>4</sub>. Several instrumental techniques have been employed to characterize the as-prepared AC (Db-s). Thermogravimetric analysis (TGA)/differential scanning colorimetry (DSC) confirmed that 400 °C was an appropriate temperature for the carbonization of raw wood powder. The FTIR spectra clearly confirmed the presence of oxygenated functional groups such as hydroxyl (–OH), aldehyde/ketone (–CHO/C=O) and ether (C–O–C) at its surface. The XRD pattern showed the amorphous structure of carbon having the 002 and 100 planes, whereas the Raman spectra clearly displayed G and D bands that further confirmed the amorphous nature of carbon. The SEM images displayed the high porosity, and the BET analysis revealed a high surface area of 1376 m<sup>2</sup> g<sup>−1</sup>, a pore volume of 1.2 cm<sup>3</sup> g<sup>−1</sup>, and a pore size of 4.06 nm with the coexistence of micropores and mesopores. The adsorption of dyes was performed by varying the dye concentration, pH, time, and the sample dose. The maximum percent of RhB dye removal by AC (Db-s) was 98.4% at an aqueous solution of 20 ppm, pH 8.5, an adsorbent dose of 0.03 g, and a time of 5 min. This study proved to be successful in addressing the local problem of wastewater pollution of garment and textile industrial effluents using locally available agro-waste of <i>Dalbergia sisoo</i>.https://www.mdpi.com/2079-4991/11/9/2217activated carbon<i>Dalbergia sisoo</i>rhodamine Bcontact timecontact temperaturepH |
| spellingShingle | Dibyashree Shrestha Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye Removal Nanomaterials activated carbon <i>Dalbergia sisoo</i> rhodamine B contact time contact temperature pH |
| title | Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye Removal |
| title_full | Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye Removal |
| title_fullStr | Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye Removal |
| title_full_unstemmed | Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye Removal |
| title_short | Efficiency of Wood-Dust of <i>Dalbergia sisoo</i> as Low-Cost Adsorbent for Rhodamine-B Dye Removal |
| title_sort | efficiency of wood dust of i dalbergia sisoo i as low cost adsorbent for rhodamine b dye removal |
| topic | activated carbon <i>Dalbergia sisoo</i> rhodamine B contact time contact temperature pH |
| url | https://www.mdpi.com/2079-4991/11/9/2217 |
| work_keys_str_mv | AT dibyashreeshrestha efficiencyofwooddustofidalbergiasisooiaslowcostadsorbentforrhodaminebdyeremoval |