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Consumption And Loss Of Formaldehyde In Electroless Copper Plating, Peter John F. Sutch
Consumption And Loss Of Formaldehyde In Electroless Copper Plating, Peter John F. Sutch
Retrospective Theses and Dissertations
The objectives of this research were to quantify formaldehyde consumption due to plating and parasitic reactions and determine the magnitude and distribution of formaldehyde losses from the electroless copper plating process. Plating and rinse bath samples obtained from three electroless copper plating operations were analyzed for formaldehyde and copper in order to develop a mass balance analysis about the plating bath for periods of active production and no production. Fugitive air and stack releases of formaldehyde were estimated using emission factors developed from air sampling at the three facilities. It was determined that approximately 90% of the formaldehyde added to …
Phosphorus Accumulation In Bottom Sediments Of Retention/Detention Ponds, Kriss Young Kaye
Phosphorus Accumulation In Bottom Sediments Of Retention/Detention Ponds, Kriss Young Kaye
Retrospective Theses and Dissertations
Laboratory and field studies were conducted to characterize phosphorus in bottom sediments for retention/detention ponds. The laboratory studies, including batch and column experiments, were conducted to assess possible removal processes. Sediment core samples were collected from detention ponds receiving urban runoff. These cores were analyzed for phosphorus at different layers including accumulated top sediments and the lower parent soil beneath it at a depth of 1, 3, 5, 10 and greater than 10 cm. The phosphorus accumulation rate was found to decline with calculated overflow rates from an average storm. Also attenuation of phosphorus with sediment depth followed an exponential …