Impact of Goethite Particles on UV Disinfection of Drinking Water

The effect of freshly generated small-sized goethite particles on UV disinfection of drinking water was studied using Escherichia coli B and Pseudomonas putida. Goethite-cell suspensions were prepared using different concentrations of goethite suspensions with different measured turbidities and a bacterial suspension. The presence of goethite particles significantly affected the efficiency of UV inactivation, even at a low concentration of particles with turbidity values ranging 1 5 nephelometric turbidity units. In addition, the efficiency of UV inactivation was affected by time of attachment to goethite particles.