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Synergistic effect of Lysinibacillus macrolides and ZnO NPs (5, 10, 15, 20 and 25 mg/L) on the removal efficiency of (a) Lead (Pb), (b) Cadmium (Cd), (c) Chromium (Cr) and (d) Copper from the media amended with heavy metal at different time intervals (0, 30, 60, 90 and 120 min).
