Table 1.

Experimental runs and the corresponding adsorption efficiencies for EFV and NVP

Run	A: adsorbent loading (g/L)	B: temperature (°C)	C: pH	D: pollutant concentration (mg/L)	Efavirenz adsorption efficiency (%)	Nevirapine adsorption efficiency (%)
1	20	25	5	20	16.2	18.9
2	10	65	9	5	44.7	49.5
3	5	25	9	10	40.2	43.2
4	12.5	45	7	12.5	18.6	20.2
5	5	65	12	20	22.8	18.7
6	5	45	12	5	42.3	46.3
7	10	25	5	5	68.6	73.6
8	10	25	12	15	32.9	27.9
9	20	25	12	5	74.3	71.4
10	20	65	5	5	42.4	37.3
11	15	55	12	20	29.9	32.9
12	12.5	45	5	10	42.5	45.7
13	5	35	5	20	34.6	27.6
14	20	25	12	20	35.8	33.7
15	20	55	9	20	24.8	19.3
16	5	65	5	10	38.6	42.7
17	20	45	7	5	45.8	41.7
18	12.5	65	5	20	24.9	18.3
19	20	65	12	12.5	27.7	33.3
20	20	45	9	12.5	12.5	6.9
21	20	35	9	5	75.4	72.9