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      Modification of polyethersulfone membranes by Polyethyleneimine (PEI) grafted Silica nanoparticles and their application for textile wastewater treatment.

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          Abstract

          In the current work, a novel nanocomposite membrane for wastewater treatment applications has been synthesized. A hydrophilic nature nanoadditive comprised grafting polyethylenimine (PEI) molecules onto the surfaces of silica nanoparticles (SiO2 NPs) was synthesized then entrapped within a polyethersulfone polymeric matrix at disparate ratios via the classical phase inversion technique. A series of experimental tools were employed to probe the influence of SiO2-PEI on the surface topography and morphological changes, hydrophilicity, porosity, surface chemistry as well as permeation and dyes retention characteristics of the new nanocomposite. Upon increasing the nanoadditives content (up to 0.7 wt. % SiO2- PEI), clear cross-sectional changes were depicted along with a noticeable decline in the water contact angle by 29.7%. Performance evaluation measurements against synthetic dye solutions were disclosed explicit enhancement in both; retention and permeation characteristics of the nanocomposite membranes. Besides, prolonged permeation test has maintained high flux stability against real textile wastewater; implying better resistance and self-cleaning characteristics have been achieved.

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          Author and article information

          Journal
          Environ Technol
          Environmental technology
          Informa UK Limited
          1479-487X
          0959-3330
          Aug 2023
          : 44
          : 20
          Affiliations
          [1 ] Civil Engineering Department, University of Technology-Iraq, Baghdad, Iraq.
          [2 ] Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Baghdad, Iraq.
          Article
          10.1080/09593330.2022.2049890
          35244524
          b3a013cc-e53b-44cd-ac84-4ef2a06001db
          History

          polyethyleneimine,wastewater,textile,Membranes modification,silica nanoparticles

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