The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis

Abstract

Geosmin (GSM) and 2-methylisoborneol (MIB) are semi-volatile compounds produced by cyanobacteria in surface waters. These compounds present problems to the drinking water industry and in aquaculture because they can taint water and fish producing an earthy-musty flavour. This paper presents an initial study on the use of TiO 2 photocatalysis for the destruction of these compounds in water. The process proved effective with the complete destruction of MIB and GSM being achieved within 60 minutes. These results suggest that TiO 2 photocatalysis will be a successful method for removal of taint compounds from potable water supplies and fish farms.

Mechanism investigation of catalyzed ozonation of 2-methylisoborneol in drinking water over aluminum (hydroxyl) oxides: Role of surface hydroxyl group

“…AOPs are attractive alternatives for the conventional water treatment and have received considerable attention in recent years [6]. Recently, several AOPs such as O 3 /H 2 O 2 [7], UV/H 2 O 2 [8], photo-catalytic oxidation [9], and ultrasonic oxidation [10] have been investigated as the potential methods for MIB removal from the source water. Unfortunately, there are still some drawbacks that limit the application of these AOPs in water treatment plant, i.e.…”

Photoelectrocatalytic degradation of camphor on TiO2/RuO2 electrodes

“…These substances show very low odor thresholds and poor removal by conventional water treatment procedures (Kutschera et al 2009;Song and O'Shea 2007). In view of this fact the efficiency of many processes has been evaluated, involving granular activated carbon (Pendleton et al 1997), powdered activated carbon (Cook et al 2001), coagulation/filtration (Sävenhed et al 1987), ozonation (Smith and Moss 1993) and more recently, heterogeneous photocatalysis (Lawton et al 2003). In this work, complete destruction of geosmin and 2-methylisoborneol was verified at reaction times of 60 min using TiO 2 as photocatalyst.…”

Photocatalytic degradation of geosmin by Pd nanoparticle modified WO3 catalyst under simulated solar light

“…Photocatalysis, due to its excellent stability, simple operation and high photoactivity under ultraviolet light, has been demonstrated to be a promising method to effectively remove GSM from water [27][28][29][30][31]. Titanium oxide (TiO 2 ) has been widely selected for GSM removal studies because of the generation of hole/electron pairs and the ability of highly oxidizing Å OH radicals.…”