Research Article

Zinc Oxide Nanoparticles Enhance the Tolerance and Remediation Potential of Bacillus spp. against Heavy Metal Stress

Figure 2

Effect of ZnO NPs (0, 5, 10, 15, 20, and 25 mg/L) on the growth of (a) Bacillus cereus and (b) Lysinibacillus macroides under heavy metal stress: (A) Pb, (B) Cd, (C) Cr, and (D) Cu at different time interval (0, 5, 10, 15, and 20 h). Error bars show means of standard error (± S.E) of three replicates () followed by different alphabetic letters showing statistically significant at 5% probability level (ANOVA and Duncan’s multiple range test).
(a)
(b)