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Mikrobielle Kontaminierung galvanischer Prozesse

Mikrobielle Kontaminierung galvanischer Prozesse


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About the Book

Inhaltsangabe: Einleitung: Neben Bereichen in denen Mikroorganismen bewußt eingesetzt werden, treten diese auch in technischen Bereichen auf in denen man sie nicht erwartet. Einer dieser Bereiche ist die Galvanotechnik, die aufgrund der hohen Toxizität ihrer Einsatzstoffe auf den ersten Blick keinen Lebensraum für Mikroorganismen bietet. Obwohl die metallbe- und -verarbeitende Industrie als typischer Einsatzbereich für anorganische Stoffe gilt, ist doch infolge des Einsatzes organischer Hilfs- und Zusatzstoffe bei der Prozeßführung, und des Eintrages der auf der zu bearbeitenden Rohware anhaftenden organischen Verunreinigungen, eine organische Belastungskomponente in den galvanische Bädern vorhanden. So ist in diversen galvanischen Bädern, in denen organische Stoffe enthalten sind, ein mikrobieller Befall möglich. Diese Mikroorganismen, die sich in und auf den galvanischen Bäder ansiedeln, verunreinigen diese und den folgenden Verfahrensablauf, durch Verschleppung des der Ware anhaftenden Elektrolyten und der darin suspendierten Mikroorganismen. Ziel der vorliegenden Untersuchung ist es die auftretenden Mikroorganismen zu spezifizieren und nach einer Möglichkeit zur Vermeidung dieser Kontaminationen zu suchen. Inhaltsverzeichnis: Inhaltsverzeichnis: 1.Einleitung9 1.1Durchführung der Untersuchung12 2.Grundlagen13 2.1Eigenschaften der Mikroorganismen13 2.2Eukarionten13 2.3Prokarionten14 2.4Einteilung der Mikroorganismen15 2.4.1Morphologische Eigenschaften15 2.4.2Physiologische Eigenschaften16 2.4.2.1Temperatur17 2.4.2.2pH-Wert17 2.4.2.3Sauerstoffgehalt18 2.4.2.4Wasserversorgung18 2.4.2.5Nährstoffansprüche19 2.5Wachstum von Mikroorganismen19 2.6Hemmstoffe22 2.7Galvanik23 2.8Galvanischer Prozeß25 2.9Herstellung von galvanischen Bädern26 2.10Elektrolytinhaltsstoffe28 3.Material und Methoden29 3.1Proben aus galvanischen Bädern und deren Zusätze29 3.2Mikrobiologische Keimzahlbestimmung und Differenzierung30 3.2.1Nährmedien30 3.2.2Keimzahlbesti


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Product Details
  • ISBN-13: 9783838623405
  • Publisher: Diplom.de
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Spine Width: 8 mm
  • Width: 148 mm
  • ISBN-10: 3838623401
  • Publisher Date: 04 May 2000
  • Height: 210 mm
  • No of Pages: 138
  • Series Title: German
  • Weight: 240 gr


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