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Modelling of a Gas Absorption Column for CO2-NaOH System under Unsteady-State Regime

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Author(s): Moses Aderemi OLUTOYE | Elizabeth Jumoke ETERIGHO

Journal: Leonardo Electronic Journal of Practices and Technologies
ISSN 1583-1078

Volume: 7;
Issue: 12;
Start page: 105;
Date: 2008;
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Keywords: Modelling | Unsteady state | Gas absorption column.

ABSTRACT
The research work on the unsteady state behavior of gas absorption column for CO2-NaOH system was carried out using the armfield gas absorption column. A model equation was developed by considering material balance around the system. The concentrations of the inlet and outlet liquid streams and the gas outlet stream varied as functions of time, while all other parameters, gas inlet stream concentration, and tank volume, were constant. Model equations were derived for the time dependent parameters and the model compared with experiments conducted for duration of 90 minutes showed that 0.2 gram mole/litre of NaOH solution reacts with CO2 to give 0.1 gram mole/litre of Na2CO3.This clearly shows that the results of experiments conducted were in agreement with the model results.