https://scholars.lib.ntu.edu.tw/handle/123456789/406370
Title: | Synthesis of novel mixed matrix scaffolds and adsorption of copper ions of waste water | Authors: | Hsien T.-Y. Lien Y.-H. Wang D.-M. |
Keywords: | Adsorbent;Adsorption;Chitosan;Mixed matrix scaffolds | Issue Date: | 2010 | Journal Volume: | 17 | Journal Issue: | 1-3 | Start page/Pages: | 113-119 | Source: | Desalination and Water Treatment | Abstract: | Mixed matrix scaffolds were synthesized by uniformly distribution of ion exchange resins (H+ form Amberjet, ID 780 mm) into the stereo-structural chitosan matrix and then used for the removal of copper ions from waste water. Specifically, Amberjet particles suspended in a 1 wt% of viscous chitosan solution were filled with cylindrical aluminum containers to prepare chitosan mixed matrix scaffolds through the freeze-gelation process. The internal surface area of mixed matrix scaffolds is 78 m2/g. The adsorption processes were performed by chelate copper ions of waste water onto the amine functional groups (-NH2) exposure on the external and porous stereo-structural surfaces of chitosan matrix as well as the sulfonate functional groups on the outer surface of ion exchange resins, respectively. Results of a low initial copper ion concentration of 5 mg Cu2+/L were used to study the adsorption capacities as well as adsorption kinetics experi-mentally. The kinetic experimental data correlated well with the second order adsorption model, suggesting that the rate limiting step of mixed matrix scaffolds may be the chemical adsorption. ? 2010 Desalination Publications. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/406370 | ISSN: | 19443994 | DOI: | 10.5004/dwt.2010.1706 |
Appears in Collections: | 化學工程學系 |
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