Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacterium
The bioleaching of an Indonesian complex copper sulfide ore was studied in shake flasks over a period of 14 days using an iron-oxidizing indigenous bacterium at room temperature (28 oC) and various pulp densities (5% and 20%). The bioleaching suspensions were periodically analyzed for Cu and Fe conc...
| Format: | Article |
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| Language: | English |
| Published: |
Indonesian Society for Microbiology
2018-05-01
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| Series: | Microbiology Indonesia |
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| Online Access: | https://jurnal.permi.or.id/index.php/mionline/article/view/634 |
| _version_ | 1818908040230862848 |
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| collection | DOAJ |
| description | The bioleaching of an Indonesian complex copper sulfide ore was studied in shake flasks over a period of 14 days using an iron-oxidizing indigenous bacterium at room temperature (28 oC) and various pulp densities (5% and 20%). The bioleaching suspensions were periodically analyzed for Cu and Fe concentrations as well as Eh, pH and DO values. Cu bioleaching efficiencies at 5% pulp density were higher than those at 20% pulp density, which correlated with Fe concentration in solution. Over a period of 14 days, the pH of bioleaching suspension was in the range of 5 ~ 9, indicating that Cu bioleaching was greatly influenced not only by proton H+ dan ferric ion but also by extracellular polymeric substances (EPS) generated by the bacterium. The current study may improve our better understanding on the bacterial action for bioleaching of complex copper sulfide ores that remains debated so far as refractory ores. |
| first_indexed | 2024-12-19T22:04:41Z |
| format | Article |
| id | doaj.art-4501dcea140c4ab7952c70c1727a0f09 |
| institution | Directory Open Access Journal |
| issn | 1978-3477 2087-8575 |
| language | English |
| last_indexed | 2024-12-19T22:04:41Z |
| publishDate | 2018-05-01 |
| publisher | Indonesian Society for Microbiology |
| record_format | Article |
| series | Microbiology Indonesia |
| spelling | doaj.art-4501dcea140c4ab7952c70c1727a0f092022-12-21T20:04:03ZengIndonesian Society for MicrobiologyMicrobiology Indonesia1978-34772087-85752018-05-0112110.5454/mi.12.1.1Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacteriumThe bioleaching of an Indonesian complex copper sulfide ore was studied in shake flasks over a period of 14 days using an iron-oxidizing indigenous bacterium at room temperature (28 oC) and various pulp densities (5% and 20%). The bioleaching suspensions were periodically analyzed for Cu and Fe concentrations as well as Eh, pH and DO values. Cu bioleaching efficiencies at 5% pulp density were higher than those at 20% pulp density, which correlated with Fe concentration in solution. Over a period of 14 days, the pH of bioleaching suspension was in the range of 5 ~ 9, indicating that Cu bioleaching was greatly influenced not only by proton H+ dan ferric ion but also by extracellular polymeric substances (EPS) generated by the bacterium. The current study may improve our better understanding on the bacterial action for bioleaching of complex copper sulfide ores that remains debated so far as refractory ores.https://jurnal.permi.or.id/index.php/mionline/article/view/634BiohydrometallurgyBioleachingComplex copper sulfidesChalcopyriteIron-oxidizing bacteria |
| spellingShingle | Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacterium Microbiology Indonesia Biohydrometallurgy Bioleaching Complex copper sulfides Chalcopyrite Iron-oxidizing bacteria |
| title | Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacterium |
| title_full | Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacterium |
| title_fullStr | Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacterium |
| title_full_unstemmed | Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacterium |
| title_short | Bacterial leaching of an Indonesian complex copper sulfide ore using an iron-oxidizing indigenous bacterium |
| title_sort | bacterial leaching of an indonesian complex copper sulfide ore using an iron oxidizing indigenous bacterium |
| topic | Biohydrometallurgy Bioleaching Complex copper sulfides Chalcopyrite Iron-oxidizing bacteria |
| url | https://jurnal.permi.or.id/index.php/mionline/article/view/634 |