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The use of microscopy techniques to analyze microbial biofilm of the bio-oxidized chalcopyrite surface / Jiang Lei in Minerals engineering, Vol. 22 N° 1 (Janvier 2009) 

Public ISBD [article]  in Minerals engineering > Vol. 22 N° 1 (Janvier 2009) . - pp. 37–42 Titre : The use of microscopy techniques to analyze microbial biofilm of the bio-oxidized chalcopyrite surface Type de document : texte imprimé Auteurs : Jiang Lei, Auteur ; Zhou Huaiyang, Auteur ; Peng Xiaotong, Auteur Année de publication : 2009 Article en page(s) : pp. 37–42 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Biofilm  Chalcopyrite  Bio-oxidation  Acidithiobacillus  ferrooxidans Index. décimale : 622 Industrie minière Résumé : This paper deals with the biofilm formed on the surfaces of chalcopyrite during the bio-oxidation process, with microscopy techniques (scanning electron microscope, fluorescence stereo microscope and transmission electron microscope) and in situ chemical analyzes (energy dispersive spectrometer). SEM images showed that this type of structured community of Acidithiobacillus ferrooxidans was made up of some bacteria and floccules. Moreover, TEM images indicated that these bacteria were wrapped by EPS. However, almost no EPS can be found in the suspending bacteria in the solution. In addition, large amounts of jarosite and element sulfur were determined in the bio-oxidation process, and the biofilm was covered with the deposition. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508000794 [article] The use of microscopy techniques to analyze microbial biofilm of the bio-oxidized chalcopyrite surface [texte imprimé] / Jiang Lei, Auteur ; Zhou Huaiyang, Auteur ; Peng Xiaotong, Auteur . - 2009 . - pp. 37–42. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 22 N° 1 (Janvier 2009) . - pp. 37–42 Mots-clés : Biofilm  Chalcopyrite  Bio-oxidation  Acidithiobacillus  ferrooxidans Index. décimale : 622 Industrie minière Résumé : This paper deals with the biofilm formed on the surfaces of chalcopyrite during the bio-oxidation process, with microscopy techniques (scanning electron microscope, fluorescence stereo microscope and transmission electron microscope) and in situ chemical analyzes (energy dispersive spectrometer). SEM images showed that this type of structured community of Acidithiobacillus ferrooxidans was made up of some bacteria and floccules. Moreover, TEM images indicated that these bacteria were wrapped by EPS. However, almost no EPS can be found in the suspending bacteria in the solution. In addition, large amounts of jarosite and element sulfur were determined in the bio-oxidation process, and the biofilm was covered with the deposition. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508000794