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Addis Ababa Science and Technology University
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Effluents containing heavy metals can be remediated with the help of dead microorganisms by the p... more Effluents containing heavy metals can be remediated with the help of dead microorganisms by the process known as biosorption. In this study the dead biomass of fungus Aspergillus flavus was used for the biosorption of heavy metals i.e., Zinc and Nickel. The capacity of biosorption by the dead biomass of Aspergillus flavus was evaluated at room temperature with different parameters which are; pH, contact time, biomass concentration and metal ion concentration. The biosorption capacity for Zn was found to be 47.36% at room temperature, at pH 6.5, with biomass concentration of 2g/L having contact time of 50 min and solution concentration of 2ppm. Biosorption capacity for Ni was found to be 61.60% at room temperature, at pH 5, with biomass concentration of 2g/L having contact time of 60 min and solution concentration of 2ppm. . In this study, desorption of the heavy metals by 0.1M HCl was found to be effective. Fungal biomass was recovered for reuse. Index Terms — Biosorption, Aspergill...
"In recent times, due to unchecked industrial effluent treatment natural resources like land... more "In recent times, due to unchecked industrial effluent treatment natural resources like land, air, water and soil are getting polluted. The major cause of this pollution is discharge of pollutants from untreated industrial effluent in to land and water that are containing toxic elements including various heavy metals viz. Cu, Ni, Zn, Mn, Fe, Cr etc. These metals are present as contaminants in the effluents which are released from different industries such as electroplating, mining, pulp industry etc. Biosorption is the most suitable bioremediation process to eliminate these heavy metals. Biosorption of heavy metal is carried out by using living cell and dead cells. This review discusses the advantages of dead biomass over living biomass in the process of biosorption."
Effluents containing heavy metals can be remediated with the help of dead microorganisms by the p... more Effluents containing heavy metals can be remediated with the help of dead microorganisms by the process known as biosorption. In this study the dead biomass of fungus Aspergillus flavus was used for the biosorption of heavy metals i.e., Zinc and Nickel. The capacity of biosorption by the dead biomass of Aspergillus flavus was evaluated at room temperature with different parameters which are; pH, contact time, biomass concentration and metal ion concentration. The biosorption capacity for Zn was found to be 47.36% at room temperature, at pH 6.5, with biomass concentration of 2g/L having contact time of 50 min and solution concentration of 2ppm. Biosorption capacity for Ni was found to be 61.60% at room temperature, at pH 5, with biomass concentration of 2g/L having contact time of 60 min and solution concentration of 2ppm. . In this study, desorption of the heavy metals by 0.1M HCl was found to be effective. Fungal biomass was recovered for reuse. Index Terms — Biosorption, Aspergill...
"In recent times, due to unchecked industrial effluent treatment natural resources like land... more "In recent times, due to unchecked industrial effluent treatment natural resources like land, air, water and soil are getting polluted. The major cause of this pollution is discharge of pollutants from untreated industrial effluent in to land and water that are containing toxic elements including various heavy metals viz. Cu, Ni, Zn, Mn, Fe, Cr etc. These metals are present as contaminants in the effluents which are released from different industries such as electroplating, mining, pulp industry etc. Biosorption is the most suitable bioremediation process to eliminate these heavy metals. Biosorption of heavy metal is carried out by using living cell and dead cells. This review discusses the advantages of dead biomass over living biomass in the process of biosorption."