Figure 5

SEM micrographs at 3000 × magnification before (a) and after (b) Pb biosorption for C. glaucum shell (C), O. mykiss scale (O), and R. kutum scale (R).

SEM micrographs at 3000 × magnification before (a) and after (b) Pb biosorption for C. glaucum shell (C), O. mykiss scale (O), and R. kutum scale (R).