n,n-diethylethanolamine(DEEA) represents a candidate tertiary alkanolamine having good potential for the bulk removal of co2 from gaseous streams it comprises two ethyl groups replacing the hydrogen atoms of the amino group in mea diethylamine (obtained from ethanol) and ethyleneoxide (obtained from the oxidation of ethylene which, in turn can be prepared by dehydration of ethanol ) react to form DEEA ethano, which is the major raw material for the manufacture of this amine, can be prepared from agriculturalproducts and/or residues. thus,DEEA is especially promising absorbent, as it can be prepared from renewable resources