Fig. 3From: Significant increase in cyanide degradation by Bacillus sp. M01 PTCC 1908 with response surface methodology optimization3D Response surface plots (I) and contour plot (II) between A: temperature and B: rotation speed (1 and 1′), also between A and C: inoculation amount (2 and 2′). The plots (I), showing the interaction of independent factors for cyanide degradation by Bacillus sp. M01. Moreover, the contour plot (II), showing the maximum rate of the cyanide degradation was shown by dark green colorBack to article page