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oai:www.ideals.illinois.edu:2142/86071 2023-07-11 col_2142_5131 col_2142_14847 com_2142_5130 com_2142_683 com_2142_397

Cooke, Richard A. Chun, Jong Ahn 2015-09-28T14:53:51Z 2015-09-28T14:53:51Z 10000-01-01 2007 2007 A field-scale bioreactor (6.1 m by 6.1 m) installed by researchers in the Agricultural and Biological Engineering Department of University of Illinois at Urbana-Champaign was selected for this study. The nitrate-N concentrations of the bioreactor were monitored in 16 monitoring wells installed at 1.5 m intervals and 0.76 m from each corner. A Finite Element Method routine was used for transient, two-dimensional groundwater flow, and the Random Walk Method was used for two-dimensional nitrate-N transport. The storage coefficient, the dispersivity and the first-order decay coefficient were estimated as 0.18 cm-1, 0.86, 16.7 cm, and 0.2 hr-1, respectively through a nonlinear regression approach. The results of this study will lead to a better understanding of nitrate-N transport through bioreactors, and consequently, the development of design standards and operating protocols for field-scale systems. Made available in DSpace on 2015-09-28T14:53:51Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3301117.pdf: 2546444 bytes, checksum: 8e238464076754cfbcdbf5f10fdcb2b7 (MD5) Previous issue date: 2007 Embargo set by: Seth Robbins for item 87352 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 116 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007. http://hdl.handle.net/2142/86071 (MiAaPQ)AAI3301117 eng Engineering, Agricultural Measurement and Modeling of Nitrate-Nitrogen Transport in Subsurface Bioreactors text Agricultural Engineering Agricultural Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.