Application of polyamide thin-film composite layered on polysulfone-GO/TiO2 mixed matrix membranes for removal of nitrotoluene derivatives from petrochemical wastewaters.

作者: Hanieh Gharehbakhsh , Homayon Ahmad Panahi , Mohammad Reza Toosi , Amir Hessam Hassani , Elham Moniri

DOI: 10.1007/S11356-020-10210-7

关键词:

摘要: Release of harmful organic intermediates or byproducts during the manufacture petrochemical compounds is a serious problem in plants. In this work, polysulfone membranes blended with GO/TiO2 nanocomposite were synthesized by phase inversion method and coated polyamide layer formed interfacial polymerization to prepare thin-film composite (TFC) sample. Analysis characterization sample carried out XRD, FE-SEM, BET, FTIR/ATR, AFM, TGA, zeta potential. Results indicated that incorporation into membrane structure enhanced porosity, surface roughness, macrovoid formation along cross-section sublayer permeability membrane. The TFC applied remove mononitrotoluene (MNT) dinitrotoluene (DNT) as basic toluene diisocyanate (TDI). demonstrated high efficiency (> 90%) for removal MNT DNT according charge exclusion mechanism Donnan effect. Application treatment wastewater TDI plant showed pollutants variable range 45–65% 53–69% highest flux rejection different transmembrane pressure, respectively.

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