The absorption of SO2 in electrified water sprays, either when the polluted gas is treated as is or when the gas is exposed to a corona source to ionize the SO2 was evaluated. An electrified spray with a charge-to-mass ratio of 50 ΜC/kg enabled the absorption rate of droplets to double, regardless of their polarities. Corona charging gave rise to an increase in the SO2 depletion rate over the scrubber wall, while negligible effects appeared on the actual droplets absorption rate. These findings suggested that faster absorption rates mostly, though not uniquely, depend on the modifications on the morphological and interfacial properties of the sprayed droplets induced by the free electric charge imposed on their surface. Conversely, the absorption rates were negligibly affected by the electrical interactions between droplets (either charged or uncharged) and the SO2 ions/radicals originating from the corona source.
Absorption of sulphur dioxide by electrosprayed droplets / Di Natale, F.; Carotenuto, C.; Parisi, A.; Lancia, A.. - In: CANADIAN JOURNAL OF CHEMICAL ENGINEERING. - ISSN 0008-4034. - 98:9(2020), pp. 1989-1997. [10.1002/cjce.23821]
Absorption of sulphur dioxide by electrosprayed droplets
Di Natale F.;Parisi A.;Lancia A.
2020
Abstract
The absorption of SO2 in electrified water sprays, either when the polluted gas is treated as is or when the gas is exposed to a corona source to ionize the SO2 was evaluated. An electrified spray with a charge-to-mass ratio of 50 ΜC/kg enabled the absorption rate of droplets to double, regardless of their polarities. Corona charging gave rise to an increase in the SO2 depletion rate over the scrubber wall, while negligible effects appeared on the actual droplets absorption rate. These findings suggested that faster absorption rates mostly, though not uniquely, depend on the modifications on the morphological and interfacial properties of the sprayed droplets induced by the free electric charge imposed on their surface. Conversely, the absorption rates were negligibly affected by the electrical interactions between droplets (either charged or uncharged) and the SO2 ions/radicals originating from the corona source.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.