Bioreactor Process Optimization for Bioleaching of Fine-Grained Residues from Copper Smelting
Theisen sludge, a fine-grained by-product from copper smelting is a secondary resource for the winning of strategic elements by metal-oxidizing acidophilic bacteria. Screening for cultures, that grew in presence of the toxic heavy metals containing fly ash was successfully performed. Small scale exp...
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| Veröffentlicht in: | Advanced Materials Research 2015-11, Vol.1130, p.321-324 |
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| creator | Eisen, Sebastian Klink, Cindy Heim, Juliane Schlömann, Michael Daus, Birgit Schopf, Simone |
| description | Theisen sludge, a fine-grained by-product from copper smelting is a secondary resource for the winning of strategic elements by metal-oxidizing acidophilic bacteria. Screening for cultures, that grew in presence of the toxic heavy metals containing fly ash was successfully performed. Small scale experiments in shaking flasks with subsequent analysis of the pregnant leaching solution (PLS) revealed biological extraction of the major (zinc and copper) and minor metals (cobalt and rhenium). Results were confirmed by XRF analyses of the leaching residue. The bioleaching approach was up-scaled in stirred tank bioreactors under controlled conditions. Optimization of metal-extraction rates will be achieved by regulation of process-parameters, predominantly the redox-potential. |
| doi_str_mv | 10.4028/www.scientific.net/AMR.1130.321 |
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Screening for cultures, that grew in presence of the toxic heavy metals containing fly ash was successfully performed. Small scale experiments in shaking flasks with subsequent analysis of the pregnant leaching solution (PLS) revealed biological extraction of the major (zinc and copper) and minor metals (cobalt and rhenium). Results were confirmed by XRF analyses of the leaching residue. The bioleaching approach was up-scaled in stirred tank bioreactors under controlled conditions. 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Optimization of metal-extraction rates will be achieved by regulation of process-parameters, predominantly the redox-potential.</description><subject>Bacteria</subject><subject>Bacterial leaching</subject><subject>Bioreactors</subject><subject>BY PRODUCTS</subject><subject>Byproducts</subject><subject>Copper</subject><subject>EXTRACTIVE METALLURGY</subject><subject>GRAIN SIZE AND SHAPE</subject><subject>Leaching</subject><subject>MELTING</subject><subject>Residues</subject><subject>Smelting</subject><issn>1022-6680</issn><issn>1662-8985</issn><issn>1662-8985</issn><isbn>3038356786</isbn><isbn>9783038356783</isbn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqNkU1LHTEUhoNWqB_9D4Eu6mbGfE0msyrXi1rBcstVlyWMyUmNzEzGJJdL--sbuULFVVfv4n14z4EHoS-U1IIwdbbdbutkPEzZO2_qCfLZ4vu6ppSTmjO6hw6plKxSnWr20REnXPFGtkp-KAVhrJJSkY_oKKUnQqSgrDlEP899iNCbHCL-EYOBlPBqzn70f_rsw4RdKQozFObRT79wcPjST1Bdxb6ExWtI3m4gYRfDiJdhniHi2xGGXOgTdOD6IcGn1zxG95cXd8tv1c3q6nq5uKkMaxWtrDWtEB1hXAkrjCKOdpyyzj4QYD04EK6RBuSDMsQpyxRtgUvgTnWNsa3lx-h0tzvH8FyeyXr0ycAw9BOETdJUNQ2XUghZ0M_v0KewiVP5TtO2I5TQthGF-rqjTAwpRXB6jn7s429NiX5xoYsL_c-FLi50caFfXOjioiwsdgs59lPKYB7fHPrPjb9gNpmR</recordid><startdate>20151101</startdate><enddate>20151101</enddate><creator>Eisen, Sebastian</creator><creator>Klink, Cindy</creator><creator>Heim, Juliane</creator><creator>Schlömann, Michael</creator><creator>Daus, Birgit</creator><creator>Schopf, Simone</creator><general>Trans Tech Publications Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>H8G</scope></search><sort><creationdate>20151101</creationdate><title>Bioreactor Process Optimization for Bioleaching of Fine-Grained Residues from Copper Smelting</title><author>Eisen, Sebastian ; 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| subjects | Bacteria Bacterial leaching Bioreactors BY PRODUCTS Byproducts Copper EXTRACTIVE METALLURGY GRAIN SIZE AND SHAPE Leaching MELTING Residues Smelting |
| title | Bioreactor Process Optimization for Bioleaching of Fine-Grained Residues from Copper Smelting |
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