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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 54 (1982), S. 153-155 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 56 (1984), S. 279-286 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Biological purification of exhaust gases. The biological purification of exhaust typically employs microorganisms to transform undesired components, particularly those with pronounced odours into innocuous products. Since the activity of these organisms is localized in water, the odiferous substances must be transferred from the air to water. Oxygen must also be supplied to the water for product transformation. Large scale plant for biological purification of waste air from agricultural and industrial operations were introduced in Europe in the early 1960's. Since then this new technology has undergone remarkable developments. The principal plant types are biofilters, dripping units, and bioscrubbing units. In compost production and agriculture there is a current preference for biofilters and drip units, while biofilters and bioscrubbers are preferred in industry. Such plant already largely satisfy demands on purification performance and reliability. Further development in the direction of even higher performance and more compact plant is expected.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 33 (1982), S. 498-499 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Complexometric separation of surface layers for gravimetric determination of corrosion ratesA new method for determination of corrosion rates is described. It is concerned with the complete release of surface layers by using Titriplex-III, the anions of which are able to form complexes with the cations of the surface layer. This method is simple to handle, available even at small samples (3-4 g). It gives reliable results and allows further investigations of the layers. The procedure is described in detail for Zink, further examples are given for Fe, Al and Cu. The method is not available for metals which form very thin layers (Ti, Ni).
    Notes: Eine neue Methode der Deckschichtablösung als Teilschritt zur gravimetrischen Bestimmung der Korrosionsgeschwindigkeit wird vorgestellt. Sie beruht auf der Komplexbildung der Metallkationen mit Anionen von Titriplex-III. - Diese komplexometrische Methode ist einfach zu handhaben, liefert gut reproduzierbare Resultate, ist auch für kleine Proben (3-4 g) anwendbar und erlaubt die weitere Untersuchung der Deckschicht. - Am Beispiel des Zinks wird die Methode ausführlich beschrieben, Anwendungen an Fe, Al und Cu werden belegt. Die Methode versagt bei Metallen, die sehr dünne Schichten bilden (Ti, Ni).
    Additional Material: 3 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 33 (1982), S. 602-609 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Influence of CO2 on the corrosion kinetics of zinc in waterMechanism and kinetics of Zn and Zn/Fe corrosion in water containing various contents of CO2 is studied by impedance spectra completed by gravimetric corrosion measurements. Electrode impedance is clearly found to be a function of PCO2, the diffusion parameter is of essential importance. Ad as a function of PCO2 yields the same curves as the rest potential dependence on CO2 and moreover the gravimetrically measured corrosion velocity rises linearly with CO2. -Determination of corrosion velocity according to STERN-GEARY cannot be realized in the systems under investigation. -Experimental results lead to the conclusion that the main corrosion reaction takes place at the metal/layer-phase. The corrosion mechanism is discussed.
    Notes: Mechanismus und Kinetik der Korrosion von Zn und Zn/Fe (Fe-Gehalt: 0,52%, 0,96%, 2,96%) in Wässern unterschiedlicher CO2-Gehalte werden durch Aufnahme von Impedanzspektren und ergänzende Abtragsmessungen untersucht. Die Elektrodenimpedanz hängt deutlich vom PCO2 ab, die Warburg-Impedanz (Diffusion) Ad hat entscheidenden Einfluß. Die Ad-Kurven zeigen die gleiche Abhängigkeit von CO2 wie die Ruhepotentialverläufe; auch die gravimetrisch bestimmte Korrosionsgeschwindigkeit steigt linear mit PCO2 an. -Eine Anwendung der STERN-GEARY-Beziehung auf die vorliegenden Systeme ist nicht möglich. -Die Ergebnisse führen zu dem Schluß, daß an der Phasengrenze Metall/Deckschicht die wesentliche Reaktion stattfindet. -Der Mechanismus der Zn-Korrosion in CO2-haltigen Wässern wird diskutiert.
    Additional Material: 10 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 33 (1920), S. 80-80 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 34 (1921), S. 24-24 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 34 (1921), S. 109-109 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 34 (1921), S. 147-148 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 34 (1921), S. 175-175 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 34 (1921), S. 412-412 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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