Laboratory studies on biomachining of copper using Staphylococcus sp
| Autor: | Mazayoshi Ozawa, K. Nandakumar, Kurissery R. Sreekumari, Shinji Shikata, Yasushi Kikuchi |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Time Factors Staphylococcus sp Staphylococcus Biomachining chemistry.chemical_element Anaerobic bacterium Fresh Water Aquatic Science Bacterial growth medicine.disease_cause Applied Microbiology and Biotechnology Models Biological Substrate Specificity Bacteria Anaerobic Chlorides Ammonia RNA Ribosomal 16S medicine Lactic Acid Water Science and Technology Microscopy Confocal biology Sequence Analysis RNA Metallurgy Electric Conductivity Temperature Equipment Design Hydrogen-Ion Concentration biology.organism_classification Copper Corrosion chemistry Biofilms Fermentation Microscopy Electron Scanning Erosion corrosion of copper water tubes Sequence Alignment Bacteria |
| Zdroj: | Biofouling. 25(6) |
| ISSN: | 1029-2454 |
| Popis: | The possibility of using bacteria to drill metallic surfaces has been demonstrated using Staphylococcus sp., a facultative anaerobic bacterium, isolated from corroded copper piping. The experiment involved exposure of copper coupons (25 mm x 15 mm x 3 mm) to a culture of Staphylococcus sp. for a maximum period of 7 days. Coupons exposed to sterile bacterial growth medium were used as controls. Exposed coupons were removed intermittently and observed microscopically for the extent of drilling. The total pit area and volume on these coupons were determined using image analysis. The results showed that both the biomachined area and volume increased with the duration of coupon exposure. In the drilling experiment, a copper thin film 2 microm thick was perforated by this bacterium within a period of 7 days. In conclusion, the results suggested that bacteria can be used as a tool for machining metallic surfaces. |
| Databáze: | OpenAIRE |
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