Rejection of Heavy Metal Ions with Polyelectrolyte Composite Nanofiltration Membrane

Abstract:

Nanofiltration membrane was prepared by static layer-by-layer (LBL) self-assembly of poly (ethyleneimine) (PEI) and poly (sodium 4-styrenesulfonate) (PSS) on the modified poly-arcylonitrile ultra-filtration membrane. Study on self-assembly of polyelectrolyte membranes with changing surface charges and wettability, rejection properties of nanofiltration membrane in different conditions and pH with respect to heavy metal ions, namely Ni²⁺ and Cd²⁺were investigated. The results show that the PEI/PSS membrane composed of 4 bilayers at operating pressure 0.4MPa, rejection of PAN-PEI/PSS nanofiltration membrane towards these 2 kind of heavy metal ions reached no less than 90%.

• Periodical: Applied Mechanics and Materials (Volume 529)
• Pages: 87-91
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.529.87
• Online since: June 2014
• Authors: Hong Mei Chen*, Hong Xia Guo, Yue Ma, Zhen Ping Qin, Guo Li Xie
• Keywords: Heavy Metal Ion, LbL Technique, Nanofiltration, Polyelectrolyte, Rejection

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