Environmental parameters affecting biosorption of heavy metals by mixed culture of Aspergillus niger and Aspergillus flavus in industrial wastewater

Abstract

This work was conducted to study the effect of some environmental conditions on bioremoval of heavy metals from industrial wastewater by consortium cultures of Aspergillus niger and A. flavus. Many procedures on the effect of incubation period, temperature, pH and concentration of metals were carried out in the laboratory. Results proved that the high culture growth and maximum heavy metals removal were after 21 days incubation at 30 oC, pH of 5.4 and metal concentration at 10 ppm. While the lowest culture growth and minimum heavy metals removal were after 7 days incubation at 5 oC , pH of 10.8 and metal concentration at 100 ppm.