Optimization of Crude Oil and PAHs Degradation by Stenotrophomonas rhizophila KX082814 Strain through Response Surface Methodology Using Box-Behnken Design

Table 3

Showing the % TPH, BOD, and COD results of 29 experimental designs using S. rhizophila KX082814 when crude oil was used as sole carbon source on 15th day of incubation period.

Std	Run	Temp (°C)	pH	Salinity	Inoculum size (ml)	% TPH	BOD (mg/l)	COD (mg/l)
8	1	32.5	8	20	20	53	153	226.8
16	2	32.5	11	20	12.5	56	189	245.6
12	3	40	8	12.5	20	52	178	286.5
18	4	40	8	5	12.5	51.89	196.5	258
23	5	32.5	5	12.5	20	68.5	221	356
6	6	32.5	8	20	5	61.53	216	341
11	7	25	8	12.5	20	67.84	256	382
20	8	40	8	20	12.5	53.52	188	256
14	9	32.5	11	5	12.5	65.23	225	358
29	10	32.5	8	12.5	12.5	70.25	241	442
25	11	32.5	8	12.5	12.5	69.05	221	395
22	12	32.5	11	12.5	5	65.2	198	305
21	13	32.5	5	12.5	5	62.59	225.6	298.5
19	14	25	8	20	12.5	53	184.2	219.9
1	15	25	5	12.5	12.5	61.52	205	298.5
28	16	32.5	8	12.5	12.5	64.25	236.5	336.8
13	17	32.5	5	5	12.5	68.54	295.6	358
5	18	32.5	8	5	5	60.21	258	356.5
10	19	40	8	12.5	5	58.5	187.5	265
7	20	32.5	8	5	20	63.25	225	398.5
4	21	40	11	12.5	12.5	55.26	198	268
9	22	25	8	12.5	5	59.25	189.65	258
27	23	32.5	8	12.5	12.5	64.58	242.6	421.2
15	24	32.5	5	20	12.5	61.22	215.8	395.8
3	25	25	11	12.5	12.5	60.25	210.5	298.5
24	26	32.5	11	12.5	20	62.54	235.6	329.5
2	27	40	5	12.5	12.5	58.21	189.58	298.5
17	28	25	8	5	12.5	59.52	178.5	258.5
26	29	32.5	8	12.5	12.5	55.68	153.8	221.35