A multifunctional membrane for visual detection and enhanced adsorptive removal of lead ions in aqueous solution was prepared by immobilizing lead sensitive ligand, dithizone (DZ), on chitosan (CS) /cellulose acetate (CA) blend membrane. The prepared membrane can display visible color change (from yellow to red) as a response to lead ions in solutions; and at the same time, lead ions can be adsorptively removed by the amine groups on the membrane surface. Thus, the development provides a truly multifunctional membrane technology that can achieve optical warning as well as removal of lead ions simultaneously. Experimental results showed that the prepared membrane exhibited the advantages of quick response, easy naked-eye recognition and improved lead uptake capacity.
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Research Article|
March 01 2011
Novel multifunctional membrane technology for visual detection and enhanced adsorptive removal of lead ions in water and wastewater
Linzi Zhang;
Linzi Zhang
1Division of Environmental Science & Engineering, National University of Singapore, Singapore 117576
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Renbi Bai
1Division of Environmental Science & Engineering, National University of Singapore, Singapore 117576
E-mail: [email protected]
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Water Supply (2011) 11 (1): 113–120.
Citation
Linzi Zhang, Renbi Bai; Novel multifunctional membrane technology for visual detection and enhanced adsorptive removal of lead ions in water and wastewater. Water Supply 1 March 2011; 11 (1): 113–120. doi: https://doi.org/10.2166/ws.2011.017
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