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IEA Greenhouse Gas R&D Programme

Prachi cropThe effect on NO2 in post combustion capture process was presented by E.ON. It was found that nitrosamine has a strong relation with the concentration of nitrite in the solution. NO2 need more time to be captured compared to SO2. Also there is a specific effect of the alkanolamine structure on the nitrosamine formation. Nitrosamine will be formed in the absorber and regenerator and is related to the presence of NO2 absorption in solution shown in presentation by University Texas at Austin. NO2 absorption rate is lower in primary amine than in secondary and tertiary amine. As the absorption is affected by concentration of carbamate species present in the solution and tertiary amine do not make carbamate when react with CO2. On and offline monitoring for ammonia and MEA emission from different pilot plant was presented by from Laborelec. Electric low pressure Impactor (ELPI) equipment is used to measure the aerosol from absorber. It was noticed that by applying FTIR before the absorber and ELPI after the absorber gives better understanding on the aerosol formation. Aerosol grows as they move through the absorber taking up water and amine. SINTEF, presentation on the environmental fate and effect of amine emission looked into how these amine emission will be taken up the plant, water, soil etc. Biodegradability of these amine emission was investigated in fresh water as well as at the bottom of lake where there is no oxygen present. Therefore, several aspects of environmental impact of post combustion capture process is covered in this session.