Process for removing carbon dioxide from a liquid aqueous stream

A process for removing carbon dioxide from a liquid aqueous stream L1 comprising at least one hexane-1,6-diamine species which comprises at least one carbon dioxide derivative of hexane-1,6-diamine, the process comprising

• (i) providing the liquid aqueous stream L1 exhibiting a carbon dioxide loading cL1, wherein cL1 is defined as nL1(CO2)/nL1(HMDA) with nL1(CO2) being the molar amount of carbon dioxide comprised in the at least one carbon dioxide derivative of hexane-1,6-diamine in L1 and nL1(HMDA) being the molar amount of the at least one hexane-1,6-diamine species in L1, wherein 0.5≤cL1≤2.5, wherein the liquid aqueous stream L1 to be subjected to heating according to (ii) has a temperature TL1<T according to (ii);
• and
• (ii) heating the liquid aqueous stream L1 provided according to (i) to a temperature T>90° C. at a pressure p>0.5 bar(abs), obtaining a vapor stream V comprising carbon dioxide, and obtaining a liquid aqueous stream L2 exhibiting a carbon dioxide loading cL2, wherein cL2 is defined as nL2(CO2)/nL2(HMDA) with nL2(CO2) being the molar amount of carbon dioxide comprised in the at least one carbon dioxide derivative of hexane-1,6-diamine in L2 and nL2(HMDA) being the molar amount of the at least one hexane-1,6-diamine species in L2, wherein cL2≤0.1.