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Preparation, regeneration and application of a chelating microfiltration membrane
A polyvinylidene fluoride (PVDF) casting membrane solution is shaped as a flat sheet membrane by thermally induced phase separation (TIPS), the PVDF membrane is defluorinated with an alkaline potassium permanganate solution, and then the carbon chain is extended with glycidyl methacrylate (GMA) as the graft monomer, and finally the nucleophilic substitution is carried out between melamine and GMA to produce a chelating microfiltration membrane for capturing and enriching heavy metals with high flux and high capacity.
NANJING UNIVERSITY
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Changqing Wei Li Chen Fuqiang Yanhong Aimin
Zhu Zhao Song Ling Liu Zhang Li