Ozonation products of bromine and chlorine in seawater aquaria

During ozonation of seawater in closed marine systems, reduced chemical species such as bromide ion and, to a much lesser degree, chloride ion may be oxidized to a variety of potentially harmful products. Concentrations and stabilities of several of these products were measured for the artificial seawater aquarium.The Living Seas. In this facility, where bromide ion was not originally added, trace amounts are present from impurities in NaCl. The total bromine concentration of the system is 57 μM with the following speciation after 6 years of operation: 5 μM bromate ion,