PEG-CNTs nanocomposite PSU membranes for wastewater treatment by membrane bioreactor

Arsalan Khalid, Ahmed Abdel-Karim, Muataz Atieh, Saqib Javed, Gordon McKay

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

As a potential solution for water scarcity, the membrane bioreactor (MBR) has attracted much consideration in the field of wastewater treatment. In any case, MBRs have fouling issues which lead to a short membrane life and high operational costs. Henceforth, better antifouling polysulfone (PSU) nanocomposite membranes blended with polyethylene glycol functionalized carbon nanotubes (PEG-CNTs) were developed via non-solvent induced phase separation (NIPS) method. CNTs were chemically functionalized with PEG and their successful preparation was confirmed by SEM, FTIR, TGA, and XRD analyses. The fabricated nanocomposite membranes were characterized with respect to water uptake, hydrophilicity, bulk porosity, mean pore radius, and tortuosity. The effect of PEG-CNTs on the membrane morphology and mechanical strength was investigated by scanning electron microscope (SEM) and tensile testing, respectively. The filtration performance of nanocomposite membranes was evaluated by the filtration of water and protein solution. According to the results, the optimum blending of 0.25 wt% PEG-CNTs exhibited an approximately four-fold increase in water and protein permeabilities of 16.8 + 0.5 and 10.8 + 0.8 Lm−2 h−1 bar−1, respectively. Moreover, the addition of PEG-CNTs in polysulfone membranes reduced the interaction between protein and membrane surface, thus improving the fouling resistance by 72.9 ± 1%. The optimized nanocomposite membrane could be a promising material with enhanced fouling control for wastewater treatment by MBR.

Original languageEnglish
Pages (from-to)165-176
Number of pages12
JournalSeparation and Purification Technology
Volume190
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Carbon Nanotubes
Polysulfones
Bioreactors
Wastewater treatment
Polyethylene glycols
Carbon nanotubes
Nanocomposites
Membranes
Fouling
Water
Proteins
Electron microscopes
Scanning
polysulfone P 1700
Tensile testing
Hydrophilicity
Phase separation
Strength of materials
Membrane Proteins
Porosity

Keywords

  • Antifouling performance
  • Carbon nanotubes
  • Membrane bioreactor
  • Polyethylene glycol
  • Polysulfone nanocomposite membranes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

PEG-CNTs nanocomposite PSU membranes for wastewater treatment by membrane bioreactor. / Khalid, Arsalan; Abdel-Karim, Ahmed; Atieh, Muataz; Javed, Saqib; McKay, Gordon.

In: Separation and Purification Technology, Vol. 190, 01.01.2018, p. 165-176.

Research output: Contribution to journalArticle

Khalid, Arsalan ; Abdel-Karim, Ahmed ; Atieh, Muataz ; Javed, Saqib ; McKay, Gordon. / PEG-CNTs nanocomposite PSU membranes for wastewater treatment by membrane bioreactor. In: Separation and Purification Technology. 2018 ; Vol. 190. pp. 165-176.
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