Talaromyces aculeatus from acidic environment as a new fungal biosorbent for removal of some reactive textile dyes

Abstract

Biosorption potential of Talaromayces aculeatusAMDC-14 (KF588645) as low-cost biosorbent for different dyes (Reactive Blue 13,Reactive Blue 72, Reactive Yellow 85 and Reactive Orange 13) removal fromaqueous medium was studied. Experiments were performed to determine effect ofinitial solution pH (1-7), biosorbent dose (0.1-2.5 g L-1), time(15-1440 min), dye concentration (10-200 ppm) and temperature (25-40 °C) onto Talaromayces aculeatus biosorption. Biosorption equilibrium data were describedvery well for Reactive Blue 13, Reactive Blue 72, Reactive Yellow 85 andReactive Orange 13 by Langmuir isotherm model than Freundlich isotherm modelwith maximum biosorption capacities which are 32.10, 71.30, 20.67 and 31.30 mgg-1, respectively. Biosorption of investigated dyes fitted tokinetic model of pseudo-second-order for all dyes. Gibbs free energies (ΔG°) ofbiosorption processes were calculated and the results indicated that allselected dyes biosorption ontoTalaromayces aculeatusAMDC-14 were spontaneous in this study. And also biosorption processes hadendothermic enthalpy values except Reactive Blue 72.