Author(s)

Shaojian Jiang, Wei Zhong, Rui Peng, Yong Jiang, Jun Zhang

chool of Energy Science and Engineering Central South University Changsha, China.
School of Energy Science and Engineering Central South University Changsha, China.

With aqueous ammonia in the process of CO₂ absorption and desorption to join sodium bicarbonate, the influence of HCO₃- on CO₂ absorption and desorption from ammonia solution was investigated through the experimental analysis of the desorption quantity of CO₂, desorption rate, CO₂ loading and the absorption rate. The experimental results showed that, in experimental conditions, The desorption rate decreased gradually with increasing ammonia concentrations. The desorption rate increased 12%, 17%, 19% and 28.8% when 1 mol/L of ammonia solution is added in 0.1 mol/L, 0.3 mol/L, 0.5 mol/L and 1 mol/L of sodium bicarbonate. The higher concentration of ammonium bicarbonate solution which was added sodium bicarbonate，the more observably the effect of CO₂ desorption was promoted. The absorption rate had dropped when absorption process added 0.3 mol/L sodium bicarbonate, the CO₂ loading was a little change.

Ammonia Desorption; the Desorption Rate; CO₂ Absorption; CO₂ Loading

S. Jiang, W. Zhong, R. Peng, Y. Jiang and J. Zhang, "Experimental Studies on the Influence of HCO₃- on Absorption and Desorption of CO₂ from Ammonia Solution," Advances in Materials Physics and Chemistry, Vol. 2 No. 4B, 2012, pp. 240-243. doi: 10.4236/ampc.2012.24B061.