@article{oai:kanazawa-u.repo.nii.ac.jp:00007897,
 author = {Hasegawa, Hiroshi and Rahman, Ismail M.M. and Kinoshita, Sanae and Maki, Teruya and Furusho, Yoshiaki},
 issue = {2},
 journal = {Chemosphere},
 month = {Mar},
 note = {Although the excellent metal-binding capacities of aminopolycarboxylate chelants (APCs) facilitate their extensive use, pre- and post-toxicity of APCs and their high persistence in aquatic environments evoke concerns. Several treatment techniques with a principal focus on the degradation of APCs at the pre-release step have been proposed. Here, we report a technique for the separation of metal ions from waste solution containing excess APCs using a solid phase extraction system with an ion-selective immobilized macrocyclic material, commonly known as a molecular recognition technology (MRT) gel. Synthetic metal solutions with 100-fold chelant content housed in H2O matrices were used as samples. The MRT gel showed a higher recovery rate compared with other SPE materials at 20 °C using a flow rate of 0.2 mL min-1. The effects of solution pH, metal-chelant stability constants and ionic radii were assessed for 32 metals. Compared to the conventional treatment options for such waste solutions, our proposed technique has the advantage of non-destructive separation of both metal ions and chelants. © 2010 Elsevier Ltd. All rights reserved., 金沢大学理工研究域物質化学系},
 pages = {193--198},
 title = {Non-destructive separation of metal ions from wastewater containing excess aminopolycarboxylate chelant in solution with an ion-selective immobilized macrocyclic material},
 volume = {79},
 year = {2010}
}