Studies on Ionic Mass Transfer at Decreasing Coefficient Region on A Rotating Disc with Submerged Impinging Jet in A Closed Cell
* Author for correspondence
E-mail : P_king@rediffmail.com
P. King* , V.S.R.K. Prasad and G. Hanumantha Rao
Department of Chemical Engineering
Andhra University
Visakhapatnam 530 003

Paper Received : 25.5.06 Revised Paper Accepted :19.7.06

The mass transfer studies at decreasing coefficient region on a rotating disc with submerged impinging jet in a closed cell were carried out in the present work. The limiting current technique for reduction of ferricyanide ion was employed. For varying parameters like nozzle sizes, rotational speeds, the experimental mass transfer data were analyzed and correlated for two ranges of heights from target surface, Hn = 0.05 m and Hn > 0.05 m. The mass transfer coefficients were increased with increase in flow rate and were also increased with increase in nozzle diameter at any given velocity. The coefficients were linearly decreased with increase in the distance between the nozzle end and the rotating disc surface. For a six fold increase in the rotational speeds, the improvements in the coefficients were about 38
per cent.

 

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