PENGARUH BEBAN GAS TERHADAP PENYERAPAN GAS CO2 DALAM ABSORPSI CAMPURAN UDARA DAN GAS CO2 OLEH LARUTAN K2CO3 PADA PACKED COLUMN

Abstract

This research was aimed to study the influence of gas loading on CO₂ absorbance quantity in CO₂ and air flow. Potassium carbonate solution was contacted counter currently in a 10 cm diameter and 150 cm high raschig ring packed column. The packing was prepared from 1.0 cm diameter and  2 cm high aluminium alloy, which was filled in a column of 100 cm high. CO₂  was applied from the bottom  and K₂CO₃ solution was added counter currently from the top of the column. The inlet gas consisted of pure CO₂ and  mixture of CO₂  and air containing 20% mole CO₂. The gas flow rate varied from 8 to 24 L/minute, and the liquid flow rate was varied from 3 to 7 L/minute. The concentration of K₂CO₃ in liquid inlet varied from 1 M and 1,5 M. The research result showed that in pure CO₂ and 1M K₂CO₃ concentration, the CO₂ absorption efficiency  increased  from 3.79 to 13.54 % and in 1.5 M K₂CO₃ concentration, the CO₂ absorption efficiency increased from 3.90 to 13.80 %. In CO₂  concentration of 20% with K₂CO₃ solution of 1 M concentration the_, CO₂ absorption efficiency increased  from 7.88 to 16.37 %.  The CO₂ absorption  increased from 11.22 to 16.87% in K₂CO₃ concentration of 1.5 M.