Significant increase in cyanide degradation by Bacillus sp. M01 PTCC 1908 with response surface methodology optimization

AMB Express

Table 6 Analysis of variance result for the parameters of quadratic model by CCD of response surface methodology

Source	Sum of squares	DF	Mean square	F value	P value Prob > F
Mode	7288.7	7	1041	19.65	< 0.0001	Significant
A: temperature	44.7	1	44.72	0.84	0.3763	Insignificant
B: rotation speed	2.75	1	2.75	0.052	0.8236	Insignificant
C: inoculation amount	107.5	1	107.5	2.03	0.1799	Insignificant
AB	1471.5	1	1471.5	27.77	0.0002	Significant
AC	1287		1287	24.29	0.0003	Significant
A²	2331	12	2330.9	44	< 0.0001	Significant
B²	119.24		119.24	2.36	0.1462	Insignificant
C²	1654	7	2330.9	31.22	0.0001	Significant
Residual	635.8	12	52.99
Lack of fit	431.3	7	61.62	1.51	0.3369	Insignificant
Pure error	204.50	5	40.90
Cor total	7809.69	19

R² = 0.91, Adj R² = 0.87, PredR² = 80, Adeq precision = 16.01, C.V. % = 12.57, mean = 56.53