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Isotherm, kinetics and thermodynamic studies of CD2+adsorption fromaqueous solution onto cellulose nanocrystals obtained from cassava peel |
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| รหัสดีโอไอ | |
| Creator | 1. C. V. Abiaziem 2. C. T. Onwordi 3. L. F. Petrik 4. A. B. Williams |
| Title | Isotherm, kinetics and thermodynamic studies of CD2+adsorption fromaqueous solution onto cellulose nanocrystals obtained from cassava peel |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2564 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 43 |
| Journal No. | 5 |
| Page no. | 1351-1359 |
| Keyword | adsorption, Cd2+, cellulose nanocrystals, cassava peel, isotherm studies |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | Cd2+adsorption from aqueous solution onto cellulose nanocrystals from cassava peel (CP) was successfully studied.The sample was acid hydrolysed into cellulose nanocrystals using 64% sulphuric acid at 45oC for 45 min and was used as anadsorbent for the removal of Cd2+from aqueous solution. Cellulose nanocrystals were characterised using high-resolutionscanning electron microscope (HR-SEM), x-ray diffraction (XRD), and thermogravimetric analysis (TGA). The differentoptimization factors were studied. The adsorption equilibrium data were best fit by the Freundlich model with an R2 of 1,indicating good surface heterogeneity of the active sites. Kinetic data were best fit by the pseudo-second order model type. Thethermodynamic parameters enthalpy, entropy, and the negative change in Gibbs free energy, imply that the adsorption of Cd2+onto CPCNC was exothermic, spontaneous, and feasible. This nanomaterial has good potential for use in successful removal ofCd2+from wastewaters. |
