Ž. This paper presents experimental results on the evaluation of two reagents, ammonia NH and monoethanolamine 3 Ž . Ž . MEA solvents, for scrubbing carbon dioxide CO greenhouse gas emissions. The scrubbing of CO by NH 3 scrubbing process. This indicates that the energy requirement for the regeneration of NH reagent should be less 3 than that for the regeneration of MEA reagent. ᮊ which significantly contribute to global warming, and that the global warming caused by increasing emissions of these gases is one of the most serious environmental problems. Among these gases, CO has the greatest adverse impact on the 2 observed greenhouse effect causing approximately 55% of the observed global warming Ž . IPCC, 1990 . Hence, the reduction of CO emis-2 sions from the fossil fuel energy systems is considered to be the most urgent to slow down the global warming trend. 0048-9697r99r$ -see front matter ᮊ 1999 Elsevier Science B.V. All rights reserved. Ž . PII: S 0 0 4 8 -9 6 9 7 9 9 0 0 0 2 5 -X ( ) A.C. Yeh, H. Bai r The Science of the Total En¨ironment 228 1999 121᎐133 122

This paper provides preliminary results on the novel study of ammonia scrubbing for the removal of carbon dioxide from flue gas. Experimental results indicated the potential of CO2 reduction by NH3 scrubbing is very promising. The overall CO2 removal efficiencies could be above 95% under proper operation conditions. The absorption capacity of NH3 was around 0.9 kg of CO2/kg of NH3 reagent being used. This should be higher than that by a MEA solution. The reaction products were analyzed and determined by X-ray diffraction analysis, SEM picture, and pH measurements. All the measurements indicated that an ammonium bicarbonate solution and its crystalline solids are the major products of reaction.

No abstract

No abstract

No abstract