World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Predicting Long-term Denitrification Capacity of Sandy Aquifers from Incubation Experiments and Sediment Properties : Volume 9, Issue 7 (20/07/2012)

By Eschenbach, W.

Click here to view

Book Id: WPLBN0003973309
Format Type: PDF Article :
File Size: Pages 52
Reproduction Date: 2015

Title: Predicting Long-term Denitrification Capacity of Sandy Aquifers from Incubation Experiments and Sediment Properties : Volume 9, Issue 7 (20/07/2012)  
Author: Eschenbach, W.
Volume: Vol. 9, Issue 7
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Eschenbach, W., & Well, R. (2012). Predicting Long-term Denitrification Capacity of Sandy Aquifers from Incubation Experiments and Sediment Properties : Volume 9, Issue 7 (20/07/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: Soil Science of Temperate Ecosystems, Büsgen-Institute, Büsgenweg 2, 37077 Göttingen, Germany. Knowledge about the spatial variability of denitrification rates and the lifetime of denitrification in nitrate-contaminated aquifers is crucial to predict the development of groundwater quality. Therefore, regression models were derived to estimate the measured denitrification capacity of incubated aquifer sediments from initial denitrification rates and several sediment parameters, namely total sulphur, total organic carbon, extractable sulfate, extractable dissolved organic carbon, hot water soluble organic carbon and potassium permanganate labile organic carbon.

For this purpose, we incubated aquifer material from two sandy Pleistocene aquifers in Northern Germany under anaerobic conditions in the laboratory using the 15N tracer technique. The measured long-term denitrification capacities ranged from 0.18 to 56.2 mg N kg−1 yr−1. The laboratory incubations exhibited high differences between non-sulphidic and sulphidic aquifer material in both aquifers with respect to all investigated sediment parameters. Denitrification rates and the estimated lifetime of denitrification were higher in the sulphidic samples. Denitrification capacity measured during one year of incubation (Dcap) was predictable from sediment variables within a range of uncertainty of 0.5 to 2 (calculated Dcap/measured Dcap) for aquifer material with a Dcap > 20 mg N kg−1 yr−1. Predictions were poor for samples with lower Dcap like samples from the NO3-bearing groundwater zone, which includes the non-sulphidic samples, from the upper part of both aquifers where Dcap is not sufficient to protect groundwater from anthropogenic NO3 input. Calculation of Dcap from initial denitrification rates was only successful for samples from the NO3-bearing zone, whereas a lag-phase of denitrification in samples from deeper zones of NO3 free groundwater caused imprecise predictions.

Our results thus show that Dcap of sandy Pleistocene aquifers can be predicted using a combination of short-term incubation and analysis of sediment parameters. Moreover, the protective lifetime of denitrification sufficient to remove NO3 from groundwater in the investigated aquifers is limited which demonstrates the need to minimize anthropogenic NO3 input.


Summary
Predicting long-term denitrification capacity of sandy aquifers from incubation experiments and sediment properties

Excerpt
Balesdent, J.: The significance of organic separates to carbon dynamics and its modelling in some cultivated soils, Eur. J. Soil Sci., 47, 485–493, doi:10.1111/j.1365-2389.1996.tb01848.x, 1996.; Behm, R.: Untersuchung zur Bestimmung der leicht umsetzbaren N- und C-Anteile im Hei{ß}wasserextrakt des Bodens-Kurzmitteilung, Arch. Acker. Pfl. Boden., 32, 333–335, 1988.; Bergmann, A.: Hydrogeochemische Untersuchungen anoxischer Redoxprozesse in tiefen Porengrundwasserleitern der Niederrheiniscchen Bucht – im Umfeld des Tagebaus Garzweiler I, Bochumer geol. geotechn. Arb. 51, 59. Abb., 27. Tab., Bochum, Germany, 167 pp., 1999.; Böttcher, J., Strebel, O., Voerkelius, S., and Schmidt, H. L.: Using isotope fractionation of nitrate nitrogen and nitrate oxygen for evaluation of microbial denitrification in a sandy aquifer, J. Hydrol., 114, 413–424, 1990.; Addy, K., Kellogg, D. Q., Gold, A. J., Groffman, P. M., Ferendo, G., and Sawyer, C.: In situ push-pull method to determine ground water denitrification in riparian zones, J. Environ. Qual., 31, 1017–1024, 2002.; Böttcher, J., Strebel, O., and Duijnisveld, W. H. M.: Reply (to a comment of Scott F. Korom), Water Resour. Res., 27, 3275–3278, 1991.; Böttcher, J., Strebel, O., and Kölle, W.: Redox conditions and microbial sulfur reactions in the Fuhrberger Feld sandy aquifer, in: Progress in Hydrogeochemistry, edited by: Matthess, G., Frimmel, F. H., Hirsch, P., Schulz, H. D., and Usdowski, E., Springer, Berlin and Heidelberg, 219–226, 1992.; Bouraoui, F., Grizzetti, B., and Aloe, A.: Nutrient Discharge from Rivers to Seas for Year 2000, Joint Research Centre Scientific and technical Reports, 77 pp., 2009.; Chodak, M., Khanna, P., and Beese, F.: Hot water extractable C and N in relation to microbiological properties of soils under beech forests, Biol. Fert. Soils, 39, 123–130, doi:10.1007/s00374-003-0688-0, 2003.; Dalton, H. and Brand-Hardy, R.: Nitrogen: the essential public enemy, J. Appl. Ecol., 40, 771–781, 2003.; Defra: Post-Conciliation Partial Regulatory Impact Assessment – Groundwater Proposals Under Article 17 of the Water Framework Directive. Draft final report, Department for Environment, Food and Rural Affairs, London, 2006.; Frind, E. O., Duynisveld, W. H. M., Strebel, O., and Boettcher, J.: Modeling of multicomponent transport with microbial transformation in groundwater – the Fuhrberg case, Water Resour. Res., 26, 1707–1719, 1990.; Galloway, J. N., Dentener, F. J., Capone, D. G., Boyer, E. W., Howarth, R. W., Seitzinger, S. P., Asner, G. P., Cleveland, C. C., Green, P. A., Holland, E. A., Karl, D. M., Michaels, A. F., Porter, J. H., Townsend, A. R., and Vorosmarty, C. J.: Nitrogen cycles: past, present, and future, Biogeochemistry, 70, 153–226, 2004.; Green, C. T., Puckett, L. J., Bohlke, J. K., Bekins, B. A., Phillips, S. P., Kauffman, L. J., Denver, J. M., and Johnson, H. M.: Limited occurrence of denitrification in four shallow aquifers in agricultural areas of the United States, J. Environ. Qual., 37, 994–100

 

Click To View

Additional Books


  • Winter Greenhouse Gas Emissions (Co2, Ch... (by )
  • Plant-driven Variation in Decomposition ... (by )
  • Short Scale Variations in Nutrients, Ect... (by )
  • Ch4 and N2O Dynamics in the Boreal Fores... (by )
  • Seasonal Survey of the Composition and D... (by )
  • Factors Influencing the Dissolved Iron I... (by )
  • Effects of Increased PCo2 and Geographic... (by )
  • The Jena Diversity-dynamic Global Vegeta... (by )
  • Response of Respiration and Nutrient Ava... (by )
  • Reviews and Syntheses: Ocean Acidificati... (by )
  • Response of Carbon Dioxide Emissions to ... (by )
  • Rapid Transfer of Photosynthetic Carbon ... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.