749760.fig.006a
(a)
749760.fig.006b
(b)
749760.fig.006c
(c)
Figure 6: Power (watt) 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. (c) size of activated carbon 0.75–1.00 mm.