Hsien T.-Y.Lien Y.-H.Wang D.-M.2019-05-032019-05-03201019443994https://scholars.lib.ntu.edu.tw/handle/123456789/406370Mixed 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.AdsorbentAdsorptionChitosanMixed matrix scaffolds[SDGs]SDG11journal article10.5004/dwt.2010.17062-s2.0-77954267420https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954267420&doi=10.5004%2fdwt.2010.1706&partnerID=40&md5=ec6c66eba035ca8e9a4005ea6a8070de