Abstract

Apparent kinetic parameters of carbon dioxide sorption from biogas using solutions produced by suspending calcined dolomite are given. The optimum and effective CO2 absorption temperature is 20°C. Kinetic calculations show that the apparent absorption order and the apparent absorption rate constant decrease with a rise of temperature. It is shown that the CO2 absorption rate is a direct function of CO2 partial pressure and an inverse function of temperature. A dolomite solution obtained by filtration of a 1% dolomite suspension in water is recommended for CO2 absorption.

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