The present work analyses the behaviour of aqueous solutions of
N,N-dimethylethylenediamine as chemical solvent for carbon dioxide
separation by gas-liquid absorption. The interest of this molecule is
centred on the presence of different types of amino centres that confer
the capability to act as typical solvent based on mixtures of amines
taking into account the suitable behaviour of some mixtures. For this
reason a comparison between diamine and amine blend solvents has been
carried out in order to understand the differences between these
solvents using absorption and NMR studies. This experimental work
analyses the influence of amine type, concentration and ratio between
different amines. Also, the effect of gas flow rate used in the bubble
column reactor upon the absorption kinetics has been analysed.