Bench-scale testing of surfactant-modified reverse osmosis/nanofiltration membranes

Michelle Chapman Wilbert, John Pellegrino, Andrew Zydney

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

An homologous series of polyethylene-oxide surfactants, with either octylphenol or polypropylene oxide 'head' groups, were applied to commercial cellulose acetate blend (CA) and polyamide (PA) reverse osmosis (RO) and nanofiltration (NF) membranes. The pressure-normalized permeate flow (NPF) and salt rejection were evaluated before and after fouling with a vegetable protein broth. Surface changes were characterized using atomic force microscopy and electro-kinetic analysis. The transport results from both the swatch and element testing were used in a simple economic model to assess operating costs. Results indicate that cost savings are possible based on the changes in NPF and salt rejection.

Original languageEnglish (US)
Pages (from-to)15-32
Number of pages18
JournalDesalination
Volume115
Issue number1
DOIs
StatePublished - Mar 1 1998

Fingerprint

Nanofiltration membranes
Osmosis membranes
Reverse osmosis
Surface-Active Agents
surfactant
Surface active agents
Salts
Vegetable Proteins
oxide
membrane
salt
Polypropylene oxides
atomic force microscopy
Nylons
Testing
Polyethylene oxides
Fouling
Polyamides
Operating costs
cost

All Science Journal Classification (ASJC) codes

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

Cite this

Wilbert, Michelle Chapman ; Pellegrino, John ; Zydney, Andrew. / Bench-scale testing of surfactant-modified reverse osmosis/nanofiltration membranes. In: Desalination. 1998 ; Vol. 115, No. 1. pp. 15-32.
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Bench-scale testing of surfactant-modified reverse osmosis/nanofiltration membranes. / Wilbert, Michelle Chapman; Pellegrino, John; Zydney, Andrew.

In: Desalination, Vol. 115, No. 1, 01.03.1998, p. 15-32.

Research output: Contribution to journalArticle

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