PIP/TMC Interfacial Polymerization with Electrospray: Novel Loose Nanofiltration Membrane for Dye Wastewater Treatment

ACS Applied Materials & Interfaces
Yesol KangIn S Kim

Abstract

A loose nanofiltration (NF) membrane with excellent dye rejection and high permeation of inorganic salt is required to fractionate dye/salt mixture in dye wastewater treatment. In this study, we fabricated the loose NF membrane by using the electrospray interfacial polymerization (EIP) method. It is a novel and facile interfacial polymerization method, which controls the thickness of the poly(piperazine-amide) (PPA) layer in nanometers (1 nm/min) and changes cross-linking degree of PPA layer and pore size by varying the electrospray time; consequently, water permeance and dye/salt rejection ratio can be handled. The fabricated EIP membrane with an optimized fabrication condition (M30, electrospray time was 30 min) possessed excellent pure water permeance (20.2 LMH/bar), high dye rejection (e.g., 99.6% for congo red (CR)), and low salt rejection (e.g., 6.3% for NaCl). Moreover, the EIP membrane exhibited enhanced antifouling property than commercial NF membrane (NF90) with a high flux recovery rate (FRR) of 87.1% and low irreversible fouling (Rir) of 12.9% after fouled by bovine serum albumin (BSA) due to its great smooth surface (average roughness (Ra) is 12.2 nm), hydrophilicity property, enhanced zeta potential, and low prote...Continue Reading

References

Jul 5, 2005·Bioresource Technology·Grégorio Crini
Mar 15, 2011·Advances in Colloid and Interface Science·Shuying ChengChris J Wright
Apr 3, 2018·Journal of Colloid and Interface Science·Junyong ZhuBart Van der Bruggen
Aug 18, 2018·Science·Maqsud R ChowdhuryJeffrey R McCutcheon
Feb 18, 2019·Journal of Environmental Management·Maria Cristina CollivignarelliSilvestro Damiani

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