Polyamidoamine dendrimers-Mil-125(Ti) MOF embedded polyethersulfone membrane for enhanced removal of heavy metal, antibiotic and dye from water


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

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, vol.10, no.6, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 6
  • Publication Date: 2022
  • Doi Number: 10.1016/j.jece.2022.108644
  • Journal Name: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, Chemical Abstracts Core, Compendex, INSPEC, Veterinary Science Database
  • Keywords: Polyamidoamine dendrimers, Mil-125(Ti), Mixed matrix, High flux membrane, Pollutant removal, PES ULTRAFILTRATION MEMBRANE, REVERSE-OSMOSIS MEMBRANE, NANOFILTRATION MEMBRANE, WASTE-WATER, NANOCOMPOSITE MEMBRANES, PHOTOCATALYTIC ACTIVITY, ORGANIC FRAMEWORKS, PERFORMANCE, NANOPARTICLES, COMPOSITE
  • Istanbul Technical University Affiliated: Yes

Abstract

In the current study, the solvo-thermal method was used to synthesize Mil-125(Ti). Then, polyamidoamine dendrimer G.02 (PAMAM) was produced by Michael's addition reaction and then loaded on the surface of Mil-125(Ti) to produce Mil-Den nanocomposite. The FESEM images, XRD pattern and FTIR analyses were used to investigate the physicochemical and structural features of synthesized Mil-Den. Next, the prepared Mil-Den nanocomposite was used for the fabrication of mixed matrix polyethersulfone (PES) membranes. The morphology, water flux, anti-fouling properties, hydrophilicity, and rejection of the Na2SO4 salt, Lead (II) ni-trates as heavy metal, cefixime antibiotic, and six different reactive dyes were assessed. The incorporation of Mil -Den nanocomposite into PES membrane led to porosity enhancement from 66.8% for the bare membrane to 87.2% for the blended ones containing 1 wt% of Mil-Den. Also, the water contact angle of membrane was reduced from 59.2 degrees to 31.2 degrees by use of Mil-Den. The water flux of the membrane was remarkably increased from 17.9 to 287.6 (L/m2/h) by the addition of Mil-Den. The dye rejection for the blended membrane containing 0.2 wt% of Mil-Den nanocomposite measured 99.33%, 85.18%, 98.20%, 94.67%, 82.49% and 79.05% for RG19, RB50, RB21, RY145, RY160 and RY39, respectively. In addition, the rejection of cefixime antibiotic, lead ion, and sodium sulfate solutions were measured 80.04%, 97.36%, and 65.21%, respectively. The flux recovery ratio determined > 68% for the bare PES membrane whereas that was > 90% for the modified membrane with 0.1 wt % Mil-Den nanocomposite. Consequently, this study indicated the high potential of blended Mil-Den/PES-based membranes in water treatment.