By Nicolás A Mazzeo
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Extra resources for Chemistry, emission control, radioactive pollution and indoor air quality
For pulverized coal-fired power plants with post-combustion capture technology using MEA a range in GWP over the life cycle of 79-275 gCO2eq/kWh is reported (range for PC without CCS is in the range 690 to 1100 gCO2eq/kWh). Where PCs without CCS have a share of power plant operation in life cycle GWP of about 80-95%, installing CO2 capture decreases this share to about 43-60%. Thus, the deployment of CCS results in a pronounce increase in the share of indirect CO2eq. emissions in the complete life cycle15.
Nitrosamines (N-nitrosamines) are a large and diverse family of synthetic and naturally occurring compounds described by the formula (R1)(R2) N-N=O, where R1 and R2 is an alkyl or aryl group. Nitrosamines are typically liquids, oils or volatile solids. Nitrosamines occur in the diet, through use of tobacco, cosmetics, pharmaceutical products and agricultural chemicals. Nearly all commercially available alkylamines are generally contaminated by small quantities of their corresponding N-nitroso analogues.
2007) and Kishimoto et al. (2008) report that a minimum of 98% of the SO2 is additionally removed2 before entering the CO2 capture process. They state that then ‘almost all’ of the still remaining SO2 is removed from the flue gas as salts. 5% are assumed (Rao and Rubin 2002;IEA GHG 2006a;Tzimas, Mercier et al. 2007;Koornneef, van Keulen et al. 2008). 1400 1200 1000 800 600 400 200 0 nr IGCC nr nr nr NGCC nr nr nr nr PC GC no-capture CO2 (g/kWh) nr nr nr NGCC nr PC Oxyfuel combustion NOx (mg/kWh) SO2 (mg/kWh) nr NGCC nr nr nr nr nr PC GC nr IGCC Post-combustion Pre-combustion NH3 (mg/kWh) PM (mg/kWh) Fig.