Isolation and Characterization of Toxic Metal Removing Bacterial Bioflocculants

K. Karthiga Devi; K.A. Natarajan

doi:10.4028/www.scientific.net/AMR.1130.585

Paper Titles

Study on As Uptake and Rhizobacteria of Two as Hyperaccumulators Forward to As Phytoremediation
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Phytoremediation of Heavy Metal Contaminated Soil by Selection of Plant Species
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Ruthenium Recovery from Acetic Acid Waste Solution by Using PEI-Coated Biomass-Chitosan Composite Fiber
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Enrichment and Isolation of Acidophilic Microorganisms from Sediments of Gold Mine Waste Leachate
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Isolation and Characterization of Toxic Metal Removing Bacterial Bioflocculants
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Culture/Co-Culture Dependent and Independent Identification of Bacterial Communities along a Chronosequence of Spontaneous Reclamation on Gold Mine Spoils in Peru
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pH and Concentration Dependent Heavy Metal Uptake by Helianthus tuberosus in Phytoremediation Experiments
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The Effect of Streptomyces sp. Isolated from Acidic Cultures of Minerals on Plant Development in Environments Polluted with Mercury
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Prevention of the Generation of Acid Mine Drainage in a Dump Rich-In Pyrite Uranium Ore
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1130Isolation and Characterization of Toxic Metal...

Isolation and Characterization of Toxic Metal Removing Bacterial Bioflocculants

Abstract:

Toxic metal pollution of ground and surface waters occur due to mining, mineral processing and metal extraction processes. Acid mine drainage emanating from abandoned mines and processed tailings and mined ore burdens also contribute to heavy metal pollution of water bodies. Bacterial bioflocculants are known to be useful in waste water treatment and exhibit higher metal removal efficiencies even at low metal concentrations. Bioflocculant generation from three types of bacterial strains, namely, Bacillus licheniformis, Bacillus firmus and Bacillus megaterium was studied and optimized. The bacterial bioflocculants were characterized using Fourier transform infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC) and Thin layer chromatography (TLC). Flocculation efficiencies of different bioflocculants were established with respect to clay and hematite suspensions and compared. Use of the bioflocculants in the removal of toxic metals such as chromium and arsenic was established as a function of solution pH, metal concentration, time and flocculant dosage.