Table 2. Adsorption and Desorption Rate Constants, k_a and k_d, of the Adsorption Systems Determined by IRA and HOA.

		parameters as per IRA		parameters as per HOA
adsorption system	characteristic change in operating condition	ka × 109 (m3/s)	kd × 109 (kg/s)	kH1 × 105 (s–1)	ka × 109 (m3/s)	kd × 109 (kg/s)
system 1a	CA,0 = 0.001 kg/m3	182	0.48	35.1	183	0.48
system 1b	CA,0 = 0.002 kg/m3	181	0.48	35.6	187	0.49
system 1c	CA,0 = 0.003 kg/m3	185	0.49	35.0	184	0.48
system 2a	CA,0 = 0.20 kg/m3	18.4	0.86	6.37	20.1	0.94
system 2b	CA,0 = 0.30 kg/m3	16.6	0.77	4.58	16.5	0.77
system 2c	CA,0 = 0.50 kg/m3	15.4	0.71	3.63	16.9	0.79
system 3a	CA,0 = 0.20 kg/m3	5.97	0.30	1.57	5.90	0.30
system 3b	CA,0 = 0.25 kg/m3	5.93	0.30	1.58	6.11	0.31
system 3c	CA,0 = 0.30 kg/m3	6.21	0.31	1.61	6.42	0.33
system 4a	T = 303.15 K	334	15.2	70.3	389	17.7
system 4b	T = 313.15 K	390	26.0	79.7	360	24.2
system 4c	T = 323.15 K	440	46.3	104	363	38.3