Effect of amine salt surfactants on the performance of thin film composite poly(piperazine-amide) nanofiltration membranes

Nanofiltration of hazardous Congo red dye: Performance and flux decline analysis

“…In the IP process, the asymmetric membrane surface is modified by coating with one or more thicker layers with smaller pores. The strong cross-linked bonding between piperazine layer and aromatic polyamide has successfully improved the permeability, selectivity and mechanical strength of the asymmetric membrane [14,17]. In addition, the advantages of PA membranes are relatively higher flux than other NF membranes, higher thermal stability and heat recovery.…”

“…Recently, several studies have been dedicated to the highperformance synthesis of polypiperazine amide (PA) NF membranes by the interfacial polymerisation (IP) method [14][15][16]. In the IP process, the asymmetric membrane surface is modified by coating with one or more thicker layers with smaller pores.…”

Performance characteristics of surfactant treated commercial polyamide membrane in the nanofiltration of model solution of reactive yellow 160

“…Most studies of surfactant-modified membranes provide evidence for this general phenomenon with anionic surfactants being much more effective at reducing fouling than cationic surfactants [20]. Xiang et al [21] investigated the role of amine salt surfactants on nanofiltration performance of TFC poly (piperazine-amide) NF membranes. Amine salt containing larger steric configuration cationic amine group resulted in better performance.…”

Effect of amine spacer of PEG on the properties, performance and antifouling behavior of poly(piperazineamide) thin film composite nanofiltration membranes prepared by in situ PEGylation approach

“…The efficiency of a TFC membrane to operate either in the reverse osmosis (RO) or in the naofiltration (NF) range depends on types of monomer employed for the preparation of its active layer on top of ultrafiltration membrane support by interfacial polymerization (IFP) [1][2][3][4][5][6][7][8][9]. The active layer of TFC RO membrane is usually dense with pore size smaller than hydrated Na þ and Cl À ions and larger than water [10,11].…”