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. 2023 Jun 29;62(42):17168–17181. doi: 10.1021/acs.iecr.3c00445

Table 3. Parameters of the Langmuir Model Fittings for Isotherms of Biochar Samples.

	CO₂				N₂
	Capacity at 25 °C, 1 bar (mmol g^–1)	q_m (mmol g^–1)	K_L (*101 MPa^–1)	R²	q_m (mmol g^–1)	K_L (*101 MPa^–1)	R²	α(CO₂/N₂)
BC-Origin	3.345	6.521	0.988	0.997	1.564	0.410	0.999	10.047
BC-H₂O	3.410	6.775	0.990	0.998	2.207	0.294	0.999	10.337
BC–CO₂	3.501	8.039	0.760	0.999	1.060	0.990	0.997	5.822
BC-ZnCl₂	3.666	13.738	0.362	0.999	0.977	1.270	0.997	4.008
BC-KOH	3.730	12.612	0.411	0.999	2.254	0.362	0.999	6.353
BC-H₃PO₄	3.813	7.433	0.988	0.997	1.439	0.760	0.999	6.715
WP-Origin	3.826	6.610	1.272	0.997	1.234	0.989	0.998	6.889
WP-H₂O	3.967	7.882	0.991	0.998	2.147	0.411	0.999	8.852
WP-CO₂	3.984	9.146	0.760	0.998	2.950	0.295	0.999	7.987
WP-ZnCl₂	4.042	6.984	1.272	0.997	1.061	0.992	0.997	8.440
WP-KOH	4.100	7.992	0.991	0.997	0.994	1.273	0.997	6.259
WP-H₃PO₄	3.913	17.179	0.294	0.999	1.234	0.991	0.998	4.130
CS-Origin	3.827	12.939	0.411	0.999	1.624	0.761	0.999	4.303
CS-H₂O	3.738	7.427	0.991	0.998	1.980	0.362	0.999	10.269
CS-CO₂	3.714	8.528	0.760	0.999	0.981	0.992	0.997	6.660
CS-ZnCl₂	3.686	6.367	1.272	0.997	1.584	0.411	0.999	12.440
CS-KOH	3.567	7.086	0.990	0.998	0.906	0.992	0.997	7.805
CS-H₃PO₄	3.436	7.888	0.760	0.999	1.960	0.245	0.999	12.484