Nanofiltration vs. reverse osmosis for the removal of emerging organic contaminants in water reuse

Victor Yangali-Quintanilla, Sung Kyu Maeng, Takahiro Fujioka, Maria Kennedy, Zhenyu Li, Gary L. Amy

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Reverse osmosis (RO) in existing water reuse facilities is a water industry standard. However, that approach may be questioned taking into consideration that "tight" NF can be equal or "better" than RO. NF can achieve the same removals of RO membranes when dealing with emerging organic contaminants (pharmaceuticals, pesticides, endocrine disruptors and others). Experiments using 18 emerging contaminants were performed using membranes NF200 and NF90 at bench-scale units, and for a more complete study, results of NF and RO pilot and full-scale experiments where compared to our experimental results. The removal results showed that NF can remove many emerging contaminants. The average removal by tight NF was 82% for neutral contaminants and 97% for ionic contaminants. The average removal by RO was 85% for neutral contaminants and 99% for ionic contaminants. Aquifer recharge and recovery (ARR) followed by NF can effectively remove emerging contaminants with removals over 90% when loose NF membranes are used.
Original languageEnglish (US)
Pages (from-to)50-50
Number of pages1
JournalDesalination and Water Treatment
Volume34
Issue number1-3
DOIs
StatePublished - Oct 2011

ASJC Scopus subject areas

  • Pollution
  • Water Science and Technology
  • Ocean Engineering

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