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Impact Roaah bacteria (T. Thiooxidans) the events of corrosion in metals, aluminum, copper and zinc | ||
| Journal of Misan Researches | ||
| Article 1, Volume 7, Issue 13, 2011, Pages 377-400 | ||
| Author | ||
| Borak .T.shalash | ||
| Abstract | ||
| In this study we isolate some species of sulfur oxidizing bacteria from Iraqi soil and water that riches with sulfur compounds , these microorganisms were identified as strains of ( Thiobacillus thiooxidans , T.Thioparus , T.Thionovellus , T.ferrooxidans ) . An isolated strain of Thiobacillus thiooxidans was grown at certain conditions that optimum for the growing such as temperature and PH-Nomber, as a liquid shaken culture. The bacterial filtrate was isolated from the culture media that contain the growing bacteria for 6 weeks and then study the curve of bacterial growing in liquid metal salt media , and also study the effect of these filtrates of bacteria in activation the corrosion in the metals thin film of ( aluminum , cupper and Zinc) when we immersed these metals in the bacterial filtrate at temperature 28C 0 , for times ( 60 , 30 and 15 ) min. respectively also we calculate the corrosion rate for all metal in conventional methods , and we found that the corrosion rate of Zinc meta larger than copper and aluminum and for copper larger than aluminum. | ||
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