Determination of equilibrium partial pressure of ammonia gas above anaerobically digested sewage sludge Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/tm70mz40n

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  • A laboratory study of anaerobically digested sewage sludge was performed to measure equilibrium constants for ammonia in the sludge. Measured constants describing the solution and dissociation of ammonia in sludge were compared to theoretical constants obtained from thermodynamic data. No significant difference was found between these two sets of constants. Corrections for activity effects due to ionic strength were necessary but no effect of the organic content of the sludge was noted. Another laboratory experiment with sludge samples was performed to investigate the behavior of the pH of sludge upon exposure to air. The pH was found to rise in roughly a logarithmic manner with most of the increase occurring in the first day following exposure. The variation of pH with the concentration of carbonate system species was examined. Increase in pH was seen to be related to a decrease in dissolved carbon dioxide concentration. A procedure was developed to predict volatile losses of ammonia following surface application. Expected losses for typical conditions were examined using this method and found to be significant. Suggestions were made for the application of the results and procedures to wastes other than sludge. The effects of several factors on loss rate were examined. Liquid temperature was seen to exert a major effect on loss potential.
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  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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  • description.provenance : Approved for entry into archive by Kirsten Clark(kcscannerosu@gmail.com) on 2013-09-25T20:49:48Z (GMT) No. of bitstreams: 1 EnglishCharlesJosephJr1979.pdf: 969886 bytes, checksum: 68892533c2663b6ca4d981b3dedaddb1 (MD5)
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