The Importance Of Solubility Of Ozone

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Solubility property of ozone is dependent on several extrinsic factors such as temperature, pressure, composition of the medium, pH, gas flow rate, etc. Henry’s law says that the pressure of the gas exerts above the liquid is directly proportional to the solubility of the ozone (Bablon et al., 1991). De Smedt et al. (2001) revealed that solubility of ozone is dependent on pH, temperature and type of additives of the aqueous solution. Levanov et al. (2008) found that solubility of ozone decreased with the addition of phosphoric acid and perchloric acid at 20°C. In case of sulfuric acid, the solubility is minimum at 12 M concentration, then is increases and at 17.9 M, it reaches equal to water. The solubility ratio (ratio between the concentrations …show more content…
(1985) found temperature dependent solubility ratio data varied from 0.31-1.13. Huge variation in the solubility ratio was also found in several researches which may be attributed to the different analytical methods, reactor design and gas flow rate (Kim et al., 2003). Numerous studies have been carried out to measure the solubility of ozone and expressed in henry’s law constant (KH), pseudo henry’s law constant, and Ostwald coefficient (Battino et al., 1983). Generally, ozone is partially soluble in water. However, temperature plays major role in solubility of ozone, as temperature increases solubility decreases. At 0°C, ozone solubility is 0.640 L ozone/L water, whereas at 60°C it is insoluble in water (Hill and Rice, 1982). Its solubility in water is 13 times that of oxygen at 0-30°C and it is progressively more soluble in colder water (Rice, 1986). Also according to the Henry-Dalton constants, the solubility of the ozone is higher at lower …show more content…
Since, it is unstable gas quickly decomposes, the half-life of the ozone is about 20-30 minutes at 20 °C (Khadre et al., 2001), and hence, it should be generated onsite for immediate use. Naturally, ozone is formed in the stratosphere by high ultraviolet radiations sparks, apart from that for commercial use it canbe generate by employing electrical discharge (high-voltage electrical arc), electrochemical and radiation methods. Among these methods electrical discharge method is widely used as commercial methods, however, it is less efficient (2-10%) and demands more electrical energy over electrochemical and radiation methods (Mahapatra et al.,

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