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Keywords: soil sample, bacterial isolates, heavy metals, microbial remediation
Researcher: Chauhan Madhulika
Guide(s): Dr. Manu Solanki
Registration Date: 30.12.2010
Abstract: Environmental pollution due to anthropogenic activities and natural sources is increasing at a rapid rate. Heavy metals such as cadmium, nickel, lead, chromium, arsenic etc. are well-known components of industrial effluents which are discharged into the environment and consequently pollute the ecosystem. The presence of these heavy metals in the environment has been a subject of great concern due to their toxicity, non-biodegradable nature and long biological half-lives preventing their elimination from biological tissues. Several technologies exist for the removal of metal contamination like precipitation, cementation, ion-exchange and reverse osmosis. This process simply transfers the pollutants, creating a new waste such as incineration residues and does not eliminate the problem. Bioremediation is an option that offers the possibility to destroy or render harmless various contaminants using natural biological activities. As such, it is easy to operate, does not produce secondary pollution and show higher efficiency at low metal concentration. Bioremediation uses biological agents, mainly microorganisms (yeast, fungi or bacteria) to clean up contaminated soil and water. The isolation of heavy metal resistant bacteria and the understanding of the mechanisms they use in order to remove the heavy metals may contribute to the development of improved detoxification processes. This investigation is focused on the isolation, screening and characterization of cadmium resistant bacteria from soil sediment for environmental cleanup newline
Language: English
Appears in Department:Department of Biotechnology

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