Testing the photosynthetic bacterium Rhodobacter sphaeroides as heavy metal removal tool |
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Authors: | Buccolieri Alessandro Italiano Francesca Dell'Atti Angelo Buccolieri Giovanni Giotta Livia Agostiano Angela Milano Francesco Trotta Massimo |
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Institution: | Dipartimento di Scienza dei Materiali, Università degli Studi di Lecce, via per Arnesano, 73100 Lecce, Italy |
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Abstract: | We present some preliminary results relevant to the ability of the purple non-sulphur bacterium Rhodobacter sphaeroides strain R26.1 to sequester heavy metals from contaminated growth media. The microorganism was chosen because of its significant tolerance to relatively high concentrations of the investigated ions Ni2+, Co2+, CrO4(2-), and MoO4(2-). In this paper the optimized conditions for the bacterial growth and the sample preparation used to infer the ability of the microorganism to cope with metal pollutants are presented. Elemental analysis has been performed by inductively coupled plasma atomic emission spectrometry previous mineralization of samples by a microwave system. |
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