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Adsorption studies on chitosan/bagasse nanocomposite surface for the elimination of hazardous Cr (VI) from wastewater |
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| รหัสดีโอไอ | |
| Creator | Abhilasha Mishra |
| Title | Adsorption studies on chitosan/bagasse nanocomposite surface for the elimination of hazardous Cr (VI) from wastewater |
| Contributor | Rekha Goswami |
| Publisher | Asia-Pacific Journal of Science and Technology |
| Publication Year | 2567 |
| Journal Title | Asia-Pacific Journal of Science and Technology |
| Journal Vol. | 29 |
| Journal No. | 1 |
| Page no. | 17 |
| Keyword | Adsorption, Chromium, Chitosan, Nanocomposite, Desorption |
| URL Website | https://so01.tci-thaijo.org/index.php/APST |
| Website title | https://so01.tci-thaijo.org/index.php/APST/article/view/271235 |
| ISSN | 2539-6293 |
| Abstract | Heavy metal contamination drastically effects the ecosystem and human life. This work focusing on elimination of Chromium (Cr (VI)) ion from the synthetic wastewater using biodegradable and easy to use chitosan blended sugarcane bagasse nanocomposite. The nanocomposite was prepared via crosslinking of chitosan and cellulose nanocrystals with N, N-methylenebisacrylamide (MBA). The successful blending and crosslinking have been confirmed by using Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), X-Ray diffraction (XRD), Particle size analysis (PSA). The adsorption potential of the nanocomposite of heavy metal ion under different time duration, pH, dosage and initial chromium solution concentration were analysed using UV spectroscopy. The ideal pH was 4, equilibrium interface time was 90 min, adsorbent dose was 0.1 g, and beginning metal ion concentration was 100 ppm for the adsorption investigation. Ionic effect was also observed. The adsorption potential was evaluated using linear and nonlinear isotherm and kinetic models and results portrayed that the Langmuir Isotherm were best fitted in case of linear and Freundlich in case of nonlinear models, whereas follow Pseudo 2nd order reaction in case of linear and Pseudo 1st order reaction in case of nonlinear showing chemical bonding between the adsorbent (nanocomposite) and adsorbate (chromium ions). Thermodynamics parameters were analysed it confirms the spontaneous and favourable adsorption mechanism. Maximum desorption rate of 95% at 90 min contact time was observed in 0.1 M HCl, with five repetitive cycles. |
