Wyniki wyszukiwania - BazTech

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Extracellular elements-mobilizing compounds produced by consortium of indigenous bacteria isolated from kupferschiefer black shale – implication for metals biorecovery from neutral and alkaline polymetallic ores

Matlakowska R., Wlodarczyk A., Slominska B., Sklodowska A.

Physicochemical Problems of Mineral Processing

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2014

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Vol. 50, iss. 1

87--96

EN

Extracellular compounds produced by a consortium of indigenous bacteria interact with the polymetallic Kupferschiefer black shale and implicate for elements mobilization and/or complexation. The extracellular compounds were identified by GC-MS as carboxylic acids, but also aromatic acids and alcohols. Due to their action in batch experiment 16 elements were mobilized from black shale. Among mobilized elements precious metals (Cu, Ni, Co, V) as well as toxic heavy metals (As) were determined. Extracellular metabolites produced by studied consortium may be utilized in non-contact biorecovery of precious metals from neutral or slightly alkaline ores, and in the bioremediation of heavy metalcontaminated sites.

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Environmental aspects of post mining uranium wastes deposited in Radoniow, Poland

Rewerski B., Ruszkowski D., Chajduk E., Sklodowska A.

Physicochemical Problems of Mineral Processing

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2014

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Vol. 50, iss. 1

71--77

EN

Post mining uranium wastes from Radoniów were analysed and chemical, mineralogical andpetrographic characteristics were performed. Additionally, the size parameters of dumps and direction of water runoff were estimated using LIDAR data. Bioaccumulation of uranium in different plants covering dump’s surface was shown.

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Uranium post-mining wastes as a potential reserve source of uranium for nuclear energy plants

Rewerski B., Mielnicki S., Bartosiewicz I., Polkowska-Motrenko H., Sklodowska A.

Physicochemical Problems of Mineral Processing

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2013

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Vol. 49, iss. 1

5--11

EN

Biotechnology is an effective and environmental friendly method of waste utilization and poor refractory ores exploitation, well known since 1949 and successfully developed in many countries: Spain, Bulgaria, USA, and Sweden. Biotechnology opens the possibility to obtain uranium as by-product in rare element recovery process (eg. Co, Au, Re, Rh, Pt) and positively affects the economic efficiency of tech-nology. The research program of biological exploitation of waste and poor ores in Poland is presented. Microbial consortia able to oxidize iron under neutral and acidic conditions (Fe concentration in ore is 1.8–3.4%) are isolated and developed during project realization.

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Microbial transformations of fossil organic matter of kupferschiefer black shale – elements mobilization from metalloorganic compounds and metalloporphyrins by a community of indigenous microorganisms

Matlakowska R., Ruszkowski D., Sklodowska A.

Physicochemical Problems of Mineral Processing

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2013

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Vol. 49, iss. 1

223--231

EN

The presented article describes the role of community of indigenous microorganisms occurring in the Kupferschiefer black shale in elements mobilization from fossil organic matter of the deposit. The short description of metalloorganic compounds and metalloporphyrins extracted from black shale was presented as well as the characterization of indigenous microorganisms. The processes of fossil organic matter colonization, biofilm development and elements mobilization accompanying bacterial growth was summarized.