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Control of fouling formation in membrane ultrafiltration by ultrasound irradiation.

Authors
  • Vincenzo Naddeo
  • Belgiorno, Vincenzo
  • Borea, Laura
  • Secondes, Mona Freda N
  • Ballesteros, Florencio Jr
Type
Published Article
Journal
Environmental Technology
Publisher
Informa UK Limited
Publication Date
Jan 01, 2015
Volume
36
Issue
9-12
Pages
1299–1307
Identifiers
DOI: 10.1080/09593330.2014.985731
PMID: 25384626
Source
Medline
Keywords
License
Unknown

Abstract

The increasing application of membrane filtration in water and wastewater treatment necessitates techniques to improve performance, especially in fouling control. Ultrasound is one promising technology for this purpose as cavitational effects facilitate continuous cleaning of the membrane. This research studied the ultrafiltration of lake water in systems with constant permeate flux under medium frequency (45 kHz) ultrasound irradiation. Fouling was investigated by monitoring transmembrane pressure (TMP) using continuous or intermittent ultrasound irradiation and dead-end or crossflow operation. Best performance was observed with continuous ultrasound irradiation in crossflow mode. Intermittent irradiation reduced the rate of TMP build-up but nevertheless allowed irreversible fouling to develop.

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