CO₂ Adsorption Capacity of Organic Alkali Sorbent CPEI from Polyethyleneimine

Table 2

Values of the kinetic model parameters.

	(mmol/ml)	()
Temperature (°C)^†
20	0.0931	0.0358	0.648	0.335	0.9986
30	0.0998	0.0399	0.548	0.367	0.9993
40	0.0977	0.0219	0.627	0.278	0.9988
50	0.0932	0.0201	0.680	0.229	0.9969
Sorbent fraction (g/ml)^‡
0.025	0.0930	0.0353	0.651	0.339	0.9969
0.05	0.233	0.0371	0.702	0.355	0.9996
0.075	0.261	0.0398	0.737	0.375	0.9980
0.15	0.291	0.0369	0.766	0.297	0.9980
Gas flow rate (ml/min)^⁋
60	0.103	0.0243	0.718	0.306	0.9993
100	0.0966	0.0351	0.680	0.347	0.9969
150	0.091	0.0404	0.646	0.296	0.9987
200	0.0948	0.0437	0.563	0.254	0.9990
CO2/N2 fraction (mol%)^⁑
2.5	0.0912	0.0142	0.753	0.240	0.9991
5	0.0937	0.0352	0.681	0.339	0.9969
10	0.0947	0.0372	0.629	0.387	0.9996
15	0.0980	0.0386	0.555	0.153	0.9994
PEI/GA ratio^⸸
CPEI-1	0.0585	0.0301	0.699	0.234	0.9988
CPEI-2	0.0718	0.0327	0.679	0.272	0.9970
CPEI-3	0.0938	0.0358	0.648	0.351	0.9986

^†Under the conditions of 0.025 g/ml of the sorbent fraction, 5 mol% of CO₂/N₂ and 100 ml/min of the gas flow rate using CPEI-3. ^‡Under the conditions of 5 mol% CO₂/N₂, 100 ml/min of the gas flow rate and at 20°C using CPEI-3. ^⁋Under the conditions of 5 mol% CO₂/N₂, 0.025 g/ml of the sorbent fraction and at 20°C using CPEI-3. ^⁑At 20°C, 0.025 g/ml of the sorbent fraction with the gas flow rate of 100 ml/min using CPEI-3. ^⸸Under the adsorption conditions of 0.025 g/ml of the sorbent fraction, 5 mol% of CO₂/N₂, and 100 ml/min of gas flow rate at 20°C.