Performance improvement of PES membrane decorated by Mil-125(Ti)/chitosan nanocomposite for removal of organic pollutants and heavy metal


Khosravi M. J. , Hosseini S. M. , Vatanpour V.

CHEMOSPHERE, vol.290, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 290
  • Publication Date: 2022
  • Doi Number: 10.1016/j.chemosphere.2021.133335
  • Journal Name: CHEMOSPHERE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, Environment Index, Food Science & Technology Abstracts, Geobase, Greenfile, MEDLINE, Metadex, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Nanofiltration membrane, Mil-125(Ti)-CS nanocomposite, Reactive dyes/Antibiotic/Heavy metal/Salts removal, Antifouling ability, NANOFILTRATION MEMBRANE, PHOTOCATALYTIC DEGRADATION, WASTE-WATER, POLYETHERSULFONE MEMBRANE, AQUEOUS-SOLUTION, ADSORPTION, COMPOSITE, DYE, ANTIBIOTICS, NANOPARTICLES
  • Istanbul Technical University Affiliated: Yes

Abstract

The Mil-125(Ti)-CS nanocomposite was successfully synthesized and characterized by using scanning electron microscopy (SEM) images, Fourier-transform infrared (FTIR) analysis and X-ray diffraction (XRD). Then, to improve the membrane performance, the synthesized Mil-125(Ti)-CS nanocomposite was embedded into the polyethersulfone (PES) membrane matrix. The nanofiltration membranes were fabricated via phase inversion method. Presence of chitosan in the structure of Mil-125(Ti) has increased the compatibility of nanoparticles with the polymer and also improved the hydrophilicity of the resulted membranes. The water contact angle of bare membrane (58 degrees) was reduced to 40 degrees by blending of 1 wt% nanocomposite led to increasing the pure water flux. However, the incorporation of more than 1 wt% of the nanocomposite caused the accumulation of nano composites and this was reduced the pore radius and permeability. The membrane containing 1 wt% nano composite was displayed the highest flux recovery ratio (FRR) similar to 98% in bovine serum albumin (BSA) filtration. The membranes containing Mil-125(Ti)-CS also showed good performance against fouling. The performance of membranes was evaluated by treatment of six reactive dyes, antibiotic (cefixime), heavy metal, NaCl and Na2SO4 solutions. Addition of Mil-125(Ti)-CS NPs at low concentrations resulted in membranes with high pure water flux, higher separation efficiency, and remarkable anti-fouling behavior.