Modified Multiwalled Carbon Nanotubes for Treatment of Some Organic Dyes in Wastewater

Figure 12

(a) Freundlich isotherm of basic orange dye adsorption onto CNTs (pH = 8.5, CNTs = 100 mg/L, contact time = 30 min). (b) Freundlich isotherm of methyl violet dye adsorption onto CNTs (pH = 8.5, CNTs = 50 mg/L, contact time = 40 min).

(a)

(b)