Abstract
Abstract Disinfection experiments were performed using Vibrio vulnificus exposed to ozonated artificial seawater (ASW). Residual oxidant concentration was monitored using a modified neutral KI test. Inactivations of V. vulnificus cultures were performed in 500 mL flasks containing ozone-treated seawater. The laboratory scale trials reduced numbers of V. vulnificus an average of 8 log units after 240 seconds with an initial oxidant concentration of 5.3 mg/L. Ozone is a very effective bactericidal (Blogoslawski et al., 1975) and viricidal agent (Englebrecht and Chain, 1985; Farooq and Akhaque, 1983), and is able to degrade toxins (Blogoslawski et al., 1979; Thurberg, 1975). Ozone gas is one of the most powerful oxidizing gases known. When ozone comes in contact with bacteria it can react directly to inactivate the organism. When ozone comes in contact with the constituents of seawater it reacts with bromide ion to form hypobromous acid, hypobromite ion and bromate ion (Haag and Hoign6, 1984) which are stabl...
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