A continuous flow packed bed photocatalytic reactor for the destruction of 2-methylisoborneol and geosmin utilising pelletised TiO2

Carlos J. Pestana, Peter K.J. Robertson (Lead / Corresponding author), Christine Edwards, Willem Wilhelm, Craig McKenzie, Linda A. Lawton

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Taste and odour compounds, especially geosmin (GSM) and 2-methylisoborneol (2-MIB), cause major problems in both drinking water and aquaculture industries world-wide. Aquaculture in particular has experienced significant financial losses due to the accumulation of taint compounds prior to harvest resulting in consumer rejection. UV-TiO2 photocatalysis has been demonstrated to remove GSM and 2-MIB at laboratory scale but the development of a continuous flow reactor suitable for use in water treatment has not been investigated. In this study, a pilot packed bed photocatalytic reactor was developed and evaluated for water treatment with both laboratory and naturally tainted samples. A significant reduction of both 2-MIB and GSM was achieved in both trials using the packed bed reactor unit. With the laboratory spiked water (100ngL-1 of each compound added prior to treatment), detectable levels were reduced by up to 97% after a single pass through the unit. When the reactor was used to treat water in a fish farm where both compounds were being produced in situ (2-MIB: 19ngL-1 and GSM: 14ngL-1) a reduction of almost 90% in taint compounds was achieved. These very encouraging promising results demonstrate the potential of this UV-TiO2 photocatalytic reactor for water treatment in fish rearing systems and other applications.

Original languageEnglish
Pages (from-to)293-298
Number of pages6
JournalChemical Engineering Journal
Volume235
Early online date19 Sep 2013
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • 2-Methylisoborneol
  • Aquaculture
  • Geosmin
  • Packed bed photocatalytic reactor
  • TiO pellets
  • Water treatment

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