PIP/TMC Interfacial Polymerization with Electrospray: Novel Loose Nanofiltration Membrane for Dye Wastewater Treatment.
Yesol KangJaewon JangSuhun KimJoohwan LimYunho LeeIn S KimPublished in: ACS applied materials & interfaces (2020)
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 protein adsorption. The results indicate that the EIP loose NF membrane had a high potential for dye wastewater treatment.
Keyphrases
- wastewater treatment
- signaling pathway
- highly efficient
- antibiotic resistance genes
- mass spectrometry
- lps induced
- oxidative stress
- pi k akt
- nuclear factor
- liquid chromatography
- aqueous solution
- photodynamic therapy
- molecular dynamics simulations
- visible light
- risk assessment
- immune response
- inflammatory response
- systemic lupus erythematosus
- small molecule
- microbial community
- quantum dots
- binding protein
- reduced graphene oxide