Measuring dinitrogen gas emissions from a lagoon treatment system
| dc.contributor.advisor | Dr. Sarah Liehr, Committee Co-Chair | en_US |
| dc.contributor.advisor | Dr. Wayne Robarge, Committee Member | en_US |
| dc.contributor.advisor | Dr. John Classen, Committee Co-Chair | en_US |
| dc.contributor.author | Larsen, Julie Melissa | en_US |
| dc.date.accessioned | 2010-04-02T17:59:31Z | |
| dc.date.available | 2010-04-02T17:59:31Z | |
| dc.date.issued | 2004-04-05 | en_US |
| dc.degree.discipline | Biological and Agricultural Engineering | en_US |
| dc.degree.level | thesis | en_US |
| dc.degree.name | MS | en_US |
| dc.description.abstract | A method for collecting dinitrogen gas emissions from open pond waste treatment systems was developed. The method was critically tested in a laboratory for sources of air contamination to ensure reliable gas measurements. A laboratory experiment was done to estimate the rate at which dissolved dinitrogen would be stripped out of solution due to non-dinitrogen bubbles rising through the water column. A volumetric mass transfer coefficient for the process was estimated for clean water. The gas collection method was implemented in a partially aerated lagoon treatment system for dinitrogen and methane gas sampling. The volumetric mass transfer coefficient found in the laboratory for clean water was adjusted to compensate for field gas production rates, temperatures and wastewater quality to estimate the rate of stripped dinitrogen from the partially aerated lagoon. The estimated rate of stripped dinitrogen was subtracted from the total measured dinitrogen flux to estimate the dinitrogen produced biologically. Results from laboratory testing revealed that dinitrogen can be measured with low amounts of dinitrogen atmospheric contamination (0.57% N₂) and the preliminary field results suggest that biological denitrification did occur at this lagoon treatment system. | en_US |
| dc.identifier.other | etd-01052004-223912 | en_US |
| dc.identifier.uri | http://www.lib.ncsu.edu/resolver/1840.16/921 | |
| dc.rights | I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. | en_US |
| dc.subject | denitrification | en_US |
| dc.subject | dinitrogen | en_US |
| dc.subject | gas measurement | en_US |
| dc.subject | waste treatment systems | en_US |
| dc.title | Measuring dinitrogen gas emissions from a lagoon treatment system | en_US |
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