Figure 4. SEM of bioleaching residues (a), (b) and (c) after 70 hrs process time (d), (e) and (f) after 420 hrs process time

From

Factorial Analysis of Lead Bioextracted Using Mixed Cultures of Acidithiobacillus Ferrooxidans and Acidithiobacillus Thiooxidans on Galena

C. I. Nwoye, E. M. Ameh, L. C. Oshionwu, M. A. Allen, M. O. Nwankwo, N. E. Idenyi

Biomedicine and Biotechnology. 2014, 2(2), 29-36 doi:10.12691/bb-2-2-1