جداسازي آهن از كائولن رضاآباد دامغان با استفاده از Aspergillus niger

Iron Removal from Rezaʹabad Kaolin Ore by Aspergillus niger NCIM 548

Kaolin is a clay mineral that has many industrial applications because of its special characteristics. One of the most important characteristic of this material is its whiteness and brightness. There are a lot of kaolin deposits in Iran that do not have appropriate brightness because of the presence of iron oxides in the ore. In this study, bioleaching of iron oxides by Aspergillus niger NCIM548 was applied to remove impurities from kaolin, and a model was presented to predict the extent of iron removal by this strain. Final results showed the removal of 2.2% of the total iron contents from kaolin that is promising for continuing studies in optimal conditions, and by using other strains of this fungus.