Thin film composite hollow fibre forward osmosis membrane module for the desalination of brackish groundwater for fertigation

Fezeh Lotfi, Sherub Phuntsho, Tahir Majeed, Kwonil Kim, Dong Suk Han, Ahmed Abdel-Wahab, Ho Kyong Shon

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The performance of recently developed polyamide thin film composite hollow fibre forward osmosis (HFFO) membrane module was assessed for the desalination of brackish groundwater for fertigation. Four different fertilisers were used as draw solution (DS) with real BGW from the Murray-Darling Basin in Australia. Membrane charge and its electrostatic interactions with ions played a significant role in the performance of the HFFO module using fertiliser as DS. Negatively charged polyamide layer promotes sorption of multivalent cations such as Ca2+ enhancing ion flux and membrane scaling. Inorganic scaling occurred both on active layer and inside the support layer depending on the types of fertiliser DS used resulting in severe flux decline and this study therefore underscores the importance of selecting suitable fertilisers for the fertiliser drawn forward osmosis (FDFO) process. Water flux under active layer DS membrane orientation was about twice as high as the other orientation indicating the need to further optimise the membrane support structure formation. Water flux slightly improved at higher crossflow rates due to enhanced mass transfer on the fibre lumen side. At 45% packing density, HFFO could have three times more membrane area and four times more volumetric flux output for an equivalent 8040 cellulose triacetate flat-sheet FO membrane module.

Original languageEnglish
Pages (from-to)108-118
Number of pages11
JournalDesalination
Volume364
DOIs
Publication statusPublished - 5 May 2015

Fingerprint

Osmosis membranes
Desalination
osmosis
desalination
Fertilizers
Groundwater
membrane
Membranes
Thin films
Osmosis
groundwater
Fibers
Fluxes
Composite materials
fertilizer
Nylons
Polyamides
active layer
Ions
Water

Keywords

  • Desalination
  • Fertigation
  • Fertigation
  • Fertiliser drawn forward osmosis
  • Forward osmosis
  • Hollow fibre membrane

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Thin film composite hollow fibre forward osmosis membrane module for the desalination of brackish groundwater for fertigation. / Lotfi, Fezeh; Phuntsho, Sherub; Majeed, Tahir; Kim, Kwonil; Han, Dong Suk; Abdel-Wahab, Ahmed; Shon, Ho Kyong.

In: Desalination, Vol. 364, 05.05.2015, p. 108-118.

Research output: Contribution to journalArticle

Lotfi, Fezeh ; Phuntsho, Sherub ; Majeed, Tahir ; Kim, Kwonil ; Han, Dong Suk ; Abdel-Wahab, Ahmed ; Shon, Ho Kyong. / Thin film composite hollow fibre forward osmosis membrane module for the desalination of brackish groundwater for fertigation. In: Desalination. 2015 ; Vol. 364. pp. 108-118.
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