749760.fig.007a
(a)
749760.fig.007b
(b)
749760.fig.007c
(c)
Figure 7: Power per unit solid mass (W/g) versus concentration (%), at varying impeller geometries. (a) size of activated carbon 1.40–2.36 mm, (b) size of activated carbon 1.00–1.40 mm, and (c) size of activated carbon 0.75–1.00 mm.