versão impressa ISSN 0012-7353
MUNOZ SIERRA, JULIÁN DAVID; CAMARGO TRILLOS, DIEGO ALEJANDRO e GALLEGO SUAREZ, DARÍO. RESPONSE SURFACE METHODOLOGY APLICATION IN A CO2 ABSORPTION PROCESS FROM BIOGAS INTO AN ALKALINE SOLUTION. Dyna rev.fac.nac.minas [online]. 2009, vol.76, n.159, pp. 135-144. ISSN 0012-7353.
In the present study a 23 factorial design extended to central composite has been used to analyse the effects of a number of variables including the [CO3=/HCO3−] ratio, initial gas pressure and gas-liquid system temperature on the absorption of CO2 into a sodium carbonate/bicarbonate alkaline solution using a simulated biogas as the gas mixture sample. A response surface analysis using a second order model has shown that the concentration ratio has a significant influence on the carbon dioxide removal process. The model has been statistically validated (analysis of variance) and explained 98.41% of the variability of the CO2 concentration (v/v) change in the simulated biogas. The maximum amount of CO2 removed has been 62.86% during a contact time of sixty minutes.
Palavras-chave : response surface; experimental design; CO2 absorption; alkaline solution; analysis of variance.