Equilibrium Studies on Sorption of Basic Fuchsin Dye Using Living Biomass of Aspergillus niger and Humicola grisea

Abstract

Textile effluents are among the most difficult to treatwastewaters, due to their considerable amount ofrecalcitrant and toxic substances. Fungal biosorption isviewed as a valuable additional treatment for removingpollutants from textile wastewaters. In the present studyfungal biomass of Aspergillus niger and Humicola griseawere used for the biosorption of basic fuchsin dye fromaqueous solutions. The maximum biosorption percentageof 46.09% and 32.66% were observed at 100 ppmconcentration of dye by Aspergillus niger and Humicolagrisea, respectively. The biosorption capacity of basicfuchsin dye by Aspergillus niger biomass was moreefficient than the biomass of Humicola grisea. Adsorptionof dye by Aspergillus niger followed Langmuir isothermmodel while by Humicola grisea followed Freundlichisotherm model.