Isolation and characterization of Pseudomonas resistant to heavy metals contaminants
By H. Hussein, H. Moawad, S. Farag. Arab journal of biotechnology, 2004
151 citations recorded by the source corpus.
In this work, chromium, copper, nickel, cadmium were selected as a model for metal contamination. This selection is based on the fact that these metals are discharged in many of the industries such as electroplating, detergents, oil refining and others. The isolation of bacteria resistant to different metal ions was done by using mixed industrial and domestic wastewater from the western station of sewage treatment plant in Alexandria. Iron limiting Casamino acid media is used in this study, since it can induce the production of fluorescent siderofores of the Pseudomonas species. Eighteen colonies were selected and purified as single colonies. The preliminary observation and the biochemical identification of these isolates indicated that the selected isolates are belonging to Pseudomonas species. Screening of the bacterial isolates for metal resistance against Cr(VI), Cu(II), Cd(II) and Ni(II) was done by the use of MIC and MTC (Maximum tolerable concentrations). Different metal concentrations were used throughout the screening to select bacterial isolates capable to grow and resist the metal toxicity. The optimum pH of metal precipitation was around 6. Whereas the optimum growth pH for Cr and Ni resistant strains was 5.5, while was 6 for Cu and Cd resistant strains.
Subfields: Environmental Engineering, Health, Toxicology and Mutagenesis, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/e29aecae99ad2648acbfdc599c4dad83c2eec478
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Citations in the corpus
- Bioremediation of Heavy Metals from Soil and Aquatic Environment: An Overview of Principles and Criteria of Fundamental Processes (2015, background): “Most heavy metal salts are water-soluble and get dissolved in wastewater, which means they cannot be separated by physical separation methods [3].”
- Biosorption of heavy metals from waste water using Pseudomonas sp. (2004, background): “The pH of the medium was adjusted at the predetermined optimum growth pH (5.5) (Hussein et al. 2003).”
- IMPLICATIONS OF BACTERIAL RESISTANCE AGAINST HEAVY METALS IN BIOREMEDIATION: A REVIEW (2012, background): “However, bacteria in different ecosystems including soil and water, are exposed to very high concentration of this metal as high levels of copper exists in soil ecosystem due to its wide application in mining, industry processes, and agricultural practices [37].”