Biosorption performance toward Co(II) and Cd(II) by irradiated Fusarium solani biomass

Abstract

Abstract The goal of the current study was to identify suitable fungi from sewage contaminated sites and evaluate how well they biosorption and reduce Co(II) and Cd(II). The Fusarium solani fungus was chosen to complete this study because it provided the maximum biosorption yield for Co(II) and Cd(II) compared to the other isolated fungi. The biosorption behavior of Fusarium solani towards Co(II) and Cd(II) was investigated under different gamma radiation doses of 0, 1, 3, and 5 kGy. Fusarium solani biomass exposed to 5 kGy (FS-5) is characterized by SEM, FTIR, and TGA. The FT-IR spectrums of FS-5 revealed the presence of hydroxyl, amino acids, carboxylic, and carbon groups. The scanning electron microscope (SEM) clearly revealed the surface texture and shape of fungal biomass.It has been shown and extensively explored how biosorption experimental parameters including pH, initial adsorbate concentration, agitation period, and fungal biomass weight affect the process. The biosorption process is very fast, according to experimental results, and the equilibrium was attained in about 25 minutes. At pH 5.0, the highest biosorption was experienced. Pseudo-first-order and pseudo-second-order kinetic models were used to test kinetic data. The best fit was obtained with the pseudo-second-order kinetic model. The biosorption followed Langmuir isothermal models with R2 > 0.991. Co(II) and Cd(II) biosorption rates were 4.44 and 21.0 mg/g respectively. The values of thermodynamic parameters (ΔGo, ΔHo, and ΔSo) were determined by Van’t Hoff plot which showed that the biosportion of Co(II) and Cd(II) was feasible, endothermic, and spontaneous. The breakthrough capacities for Co2+ and Cd2+ ions take the order: Cd2+ > Co2+, which is consistent with data, obtained using the batch method.