Surfactant-assisted interfacial polymerization for improving the performance of nanofiltration-like forward osmosis membranes

Ang, Micah Belle Marie Yap; Lu, Yun-Ting; Huang, Shu-Hsien; Millare, Jeremiah C.; Tsai, Hui-An; Lee, Kueir‐Rarn

doi:10.1007/s10965-022-02942-6

Cited by 8 publications

(2 citation statements)

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“…Interfacial polymerization (IP) is the most popular technique for producing composite NFMs [6]. In IP, phase IP is performed on a suitable substrate, and the reactants polymerize at the immiscible two-phase interface to produce membranes [7].…”

Section: Introductionmentioning

confidence: 99%

“…In IP, phase IP is performed on a suitable substrate, and the reactants polymerize at the immiscible two-phase interface to produce membranes [7]. Typically, two or more active monomers in the aqueous and organic phases are used, and a thin polyamide layer is produced at the phase interface, which increases the salt rejection rate of the membrane, thus preserving and enhancing membrane flow [6]. The NFM layer may be as thin as a few hundred nanometers, which significantly increases the permeability of the membrane and minimizes the pressure difference and operating pressure.…”

Section: Introductionmentioning

confidence: 99%

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IP–ZrO2/BC Nanofiltration Membranes: Preparation and Properties

Weng¹,

Tian²,

Huang³

et al. 2022

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In this study, by adding zirconium anhydride (ZrO2) particles to a solution of N–methylmorphorphine–N–oxide (NMMO) and bamboo cellulose (BC), we used interfacial polymerization (IP) to obtain regenerated cellulose nanofiltration membranes (IP–ZrO2/BC–NFMs) that exhibited high water flow and rejection of salts and dyes. During interfacial polymerization, anhydrous piperazine (PIP) was used as the waterborne monomer, and 1,3,5–trimesoyl chloride (TMC) and n–hexane were used as the organic phase. The procedure was adjusted by analyzing the impacts of the concentrations of the water and organic phase monomers and the reaction duration on the performance of the developed IP–ZrO2/BC–NFMs. The chemical structures and morphologies of the as–obtained IP–ZrO2/BC–NFMs were examined using various characterization techniques. The performance of these membranes for removal of inorganic salts and dyes as well as their water flow were investigated. IP–ZrO2/BC–NFMs obtained at a pressure of 0.5 MPa, PIP concentration of 1.5 wt.%, TMC concentration of 0.15 wt.%, and polymerization period of 2 min displayed the highest water flux (55.12 LMH) and the best desalination effect (NaCl rejection rate = 19.15%). Over 90% of both Methyl Blue (MB) and Congo Red (CR) dyes were intercepted. We demonstrated that the addition of ZrO2 to nanofiltration membranes significantly enhanced the water flow of the IP–ZrO2/BC–NFMs as well as the salt ion rejection rate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%