Effects ofarthrobactersp.,acidovorax delafieldii, andbacillus megateriumcolonisation on copper solvency in a laboratory reactor

Autor:	M W Mittelman, B Beheshti, D Davidson
Rok vydání:	1996
Předmět:	biology Inoculation Biofilm chemistry.chemical_element Aquatic Science biology.organism_classification Applied Microbiology and Biotechnology Copper Microbiology Colonisation chemistry Food science Acidovorax delafieldii Dissolution Bacteria Water Science and Technology Bacillus megaterium
Zdroj:	Biofouling. 9:279-292
ISSN:	1029-2454 0892-7014
DOI:	10.1080/08927019609378310
Popis:	Copper solvency is of increasing concern in domestic water systems. Although the mechanisms responsible for this problem are not well established, it is clear that microbially influenced corrosion (MIC) plays a role in copper dissolution. A series of flow cells were inoculated with potable water isolates under both flowing and stagnant conditions. Coupons colonised with A. delafieldii released significantly greater amounts of copper to the bulk phase than did sterile controls or coupons colonised by Arthrobacter sp. or B. megaterium (p < 0.05) after 5 d colonisation. Bulk phase pH levels decreased with the development of A. delafieldii biofilms, suggesting the production of acidic metabolic products by bacteria may be a factor in copper dissolution. Extractable surface associated copper concentrations (ESAC) in experiments inoculated with B. megaterium and A. delafieldii were 96.3 μg cm‐2 and 50.6 μg cm‐2, respectively, compared with 7.2 μg cm‐2 for sterile controls maintained at pH 6.50. Increases in pro...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13fea8a16f32fcccabeba106360935a7 https://doi.org/10.1080/08927019609378310 Zobrazit plný text záznamu