The development of a microbial metal - resistance consortium for metal bioremediation in a simulated fluvial system

Our main goal was to enrich the microbial population which develops when a pollution event changes the equilibrium of a fluvial system and thereafter investigate the effectiveness of this adapted bacterial consortium in a simulated bio-remediation process. The contaminated soil of a highly heavy met...

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Bibliographic Details
Main Authors: Băbuţ Cosmina Simona
Ferronato Chiara
Di Giola Diana
Antisari Livia Vittori
Modesto Monica
Biavatti Bruno
Vianello Gilmo
Micle Valer
Format: Article
Published: 2013
Series:Review on agriculture and rural development 2 No. 1
Kulcsszavak:Mikrobiológia
Online Access:http://acta.bibl.u-szeged.hu/55237
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Summary:Our main goal was to enrich the microbial population which develops when a pollution event changes the equilibrium of a fluvial system and thereafter investigate the effectiveness of this adapted bacterial consortium in a simulated bio-remediation process. The contaminated soil of a highly heavy metal polluted mining deposit was mixed with non-contaminated fluvial sediment in a ratio of 1:3. After the addition of fresh fluvial water, the system was allowed to equilibrate for one month. Then, a research was carried out on experimental microcosms in order to test the effects of the surviving microorganisms on toxic heavy metals (Cu, Fe, Zn) that are polluting surface sediments. The adapted microbial population was first enriched in aerobic conditions with a high concentration of heavy metals (up to 300 mg/l Cu; 400 mg/l Fe; 600 mg/l Zn) and afterwards the consortium obtained was applied in a microcosm to test its effect on the decontamination of heavy metals. The study has demonstrated that some microorganisms can survive the contamination. However, with regard to the tested metals, the microorganisms did not influence the status of the metals during the period of the analysis.
Physical Description:114-119
ISSN:2063-4803