Performance of confined plunging liquid jet bubble column as a gas-liquid reactor

The volumetric mass transfer coefficient in a confined plunging liquid jet (CPLJ) bubble column absorber was determined during a steady-state absorpti on of CO2 in sodium carbonate and bicarbonate solution with an addition of hypochlorite catalyst. Special care was paid while choosing the suitable re action rate to account for the two different zones in the absorber (mixing zone and pipe flow zone) where the volumetric mass transfer coefficients di ffer by an order of magnitude. The determined mass transfer coefficients re ached 0.6 s(-1) and appeared to be 50% lower than those determined during p hysical absorption of CO2. Energetic efficiency of the examined CPLJ contac tor was also calculated. (C) 2001 Elsevier Science Ltd. All rights reserved .