Sorption of BTEX on a nanoporous composite of SBA-15 and a calcined hydrotalcite

Nano Convergence

Table 5 Langmuir and Henry model parameters for volatile organic compound (VOC) adsorption in SBA-15, HT_C, and SBA-15/HT_C25

VOCs	T (°C)	SBA-15				HT_C				SBA-15/HT_C25
VOCs	T (°C)	a _m	K _L	K _H	R _L	a _m	K _L	K _H	R _L	a _m	K _L	K _H	R _L
Benzene	300	0.059	0.852	0.05	0.99	0.05	0.586	0.029	0.93	0.068	0.915	0.062	0.993
	260	0.06	0.872	0.052	0.994	0.052	0.468	0.024	0.935	0.067	0.935	0.062	0.993
	225	0.059	1.012	0.06	0.988	0.049	0.577	0.028	0.907	0.067	1.168	0.076	0.991
	185	0.063	0.919	0.058	0.984	0.05	0.559	0.028	0.916	0.071	1.021	0.073	0.992
	150	0.069	1.025	0.071	0.988	0.048	0.564	0.027	0.95	0.081	1.04	0.084	0.996
Toluene	300	0.048	1.026	0.049	0.974	0.042	0.701	0.029	0.906	0.052	1.00	0.052	0.91
	260	0.051	1.179	0.06	0.99	0.041	0.583	0.024	0.898	0.055	1.188	0.065	0.99
	225	0.053	1.271	0.067	0.991	0.039	0.583	0.023	0.922	0.059	1.272	0.075	0.991
	185	0.064	1.075	0.068	0.992	0.04	0.629	0.025	0.95	0.07	1.11	0.077	0.996
	150	0.067	1.538	0.103	0.989	0.039	1.23	0.048	0.974	0.131	0.564	0.074	0.997
p-Xylene	300	0.042	1.335	0.056	0.981	0.036	0.524	0.019	0.885	0.047	1.469	0.07	0.988
	260	0.043	1.316	0.057	0.981	0.011	2.58	0.028	0.898	0.049	1.498	0.074	0.99
	225	0.046	1.514	0.069	0.984	0.035	0.675	0.023	0.922	0.064	1.178	0.075	0.997
	185	0.067	1.509	0.102	0.999	0.036	1.002	0.036	0.962	0.070	1.122	0.079	0.998
	150	0.078	1.117	0.092	0.981	0.033	1.635	0.055	0.972	0.124	0.666	0.082	0.991
Ethylbenzene	300	0.041	1.185	0.048	0.965	0.033	0.987	0.033	0.818	0.048	1.387	0.066	0.977
	260	0.044	1.379	0.06	0.976	0.034	1.089	0.037	0.866	0.051	1.258	0.065	0.981
	225	0.046	1.7	0.078	0.99	0.035	0.644	0.023	0.925	0.054	1.33	0.072	0.989
	185	0.062	1.701	0.105	0.999	0.035	0.974	0.034	0.962	0.081	0.921	0.074	0.998
	150	0.120	1.317	0.16	0.999	0.035	1.535	0.052	0.972	0.101	1.069	0.108	0.998

Langmuir monolayer capacity a_m (mmol/g), adsorbent’s maximum adsorption capacity, Henry constants K_H (mmHg⁻¹), Langmuir K_L (mmHg⁻¹), and R_L linear correlation coefficient