Adsorption of Crystal Violet on Activated Carbon Prepared from Coal Flotation Concentrate

Abstract

Abstract. The objective of this study is firstly to investigate the floatability properties of ZilanVan coal after microwave irradiation and secondly to produce activated carbon from flotation concentrate in order to remove Crystal Violet (CV) from waste water. The flotation experiments showed that microwave heating at 0.9 kW power level for 60 sec exposure time enhanced the hydrophobicity and increased the flotation yield. The activated carbon with remarkable surface area (696 m 2 /g) was produced from the flotation concentrate and used to adsorb CV from aqueous solution in a batch reactor at different temperature. The adsorption properties of CV onto the activated carbon are discussed in terms of the adsorption isotherms (Langmuir and Freundlich) and found that the experimental results best fitted by the Langmuir model.

Adsorption of Crystal Violet on Rice Husk Activated Carbon

“…This result is consistent with the literature. Most adsorption studies of crystal violet and methyl blue dyes have been reported to fit well with the Langmuir isotherm model [10,20,21].…”