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Use of some isolated fungi in biological Leaching of Aluminum from low grade bauxite
Abstract
indigenous specimen fungi, Aspergillus niger and Penicillium notatum. Savored dextrose chloramphenicol agar (SDA) was used as medium for the selected fungi. All microorganisms were tested for acid-production and leaching capabilities of aluminum from low grad bauxite. Leaching experiments were performed in 250-ml Erlenmeyer flasks at 28°C and at 150 rpm agitation under aseptic conditions. Pry heating of bauxite and its effect on leaching process was studied. Indigenous specimen fungi were the most efficient of the fungal cultures; 7080 mg of Al2O3/l was solubilized at 15% pulp density of bauxite. The metal content of leaching solution was determined by using wet chemical and atomic
absorption spectrophotometer.