We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The effectiveness of injected carbon sources in enhancing the denitrifying processes in groundwater with high nitrate concentrations.
- Authors
Park, Sunhwa; Kim, Hyun-Koo; Kim, Deok Hyun; Lee, Gyeong-Mi; Yoon, JongHyun; Choi, Hyojung; Kim, Moonsu; Han, Kyungjin; Kim, Young; Chung, Hyen Mi
- Abstract
The single-well push-pull test (SWPPT) was adapted to quantify in denitrification rates and to assess microbial population dynamics in a highly nitrate-contaminated aquifer (105-311 NO3 mg L-1). In SWPPT through addition of fumarate as carbon source into test wells, significant NO3-consumtion was monitored in the well. The average zero- and first order rate coefficients were 7.85 and 0.82 mmol L-1 day-1, respectively. Degradation rate of injected fumarate is 15.22 (zero-order) and 0.51 (first-order) mmol L-1 day-1, respectively. Significant fumarate (electron donor, ED) and NO3(electron acceptor, EA) consumption, the production of dissolved CO2 during denitrification tests, and N2O production strongly indicate that the EAs consumption was mainly due to microbial activity. Therefore, SWPPT may be useful for quantifying in situ denitrification rates and for assessing microbial population dynamics in nitrate-contaminated aquifers in Silty Clay layer.
- Subjects
DENITRIFICATION; MICROORGANISM populations; ELECTRON donors; POPULATION dynamics; GROUNDWATER; ELECTROPHILES
- Publication
Process Safety & Environmental Protection: Transactions of the Institution of Chemical Engineers Part B, 2019, Vol 131, p205
- ISSN
0957-5820
- Publication type
Article
- DOI
10.1016/j.psep.2019.08.029