Extension of the River Water Quality Model no. 1 with the fate of pesticides
- Author
- Veerle De Schepper (UGent) , Katrijn Holvoet, Lorenzo Benedetti (UGent) , Piet Seuntjens (UGent) and Peter A Vanrolleghem
- Organization
- Abstract
- The existing River Water Quality Model No. 1 (RWQM1) was extended with processes determining the fate of non-volatile pesticides in the water phase and sediments. The exchange of pesticides between the water column and the sediment is described by three transport processes: diffusion, sedimentation and resuspension. Burial of sediments is also included. The modified model was used to simulate the concentrations of diuron and chloridazon in the river Nil. A good agreement was found between the simulated pesticide concentrations and measured values resulting from a four-month intensive monitoring campaign. The simulation results indicate that pesticide concentrations in the bulk water are not sensitive to the selected biochemical model parameters. it seems that these concentrations are mainly determined by the imposed upstream concentrations, run-off and direct losses. The high concentrations in the bulk water were not observed in the sediment pore water due to a limited exchange between the water column and the sediment. According to a sensitivity analysis, the observed pesticide concentrations are highly sensitive to the diffusion and sorption coefficients. Therefore, model users should determine these parameters with accuracy in order to reduce the degree of uncertainty in their results.
- Keywords
- river water quality, sediment, pesticide fate, modelling, diuron, chloridazon, SORPTION, COHESIVE SEDIMENT, SEDIMENT TRANSPORT, HERBICIDES, SYSTEMS, CONTAMINANTS, DEGRADATION, MANAGEMENT, EROSION, SURFACE
Downloads
-
(...).pdf
- full text
- |
- UGent only
- |
- |
- 721.99 KB
Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-2135589
- MLA
- De Schepper, Veerle, et al. “Extension of the River Water Quality Model No. 1 with the Fate of Pesticides.” JOURNAL OF HYDROINFORMATICS, vol. 14, no. 1, 2012, pp. 48–64, doi:10.2166/hydro.2011.028.
- APA
- De Schepper, V., Holvoet, K., Benedetti, L., Seuntjens, P., & Vanrolleghem, P. A. (2012). Extension of the River Water Quality Model no. 1 with the fate of pesticides. JOURNAL OF HYDROINFORMATICS, 14(1), 48–64. https://doi.org/10.2166/hydro.2011.028
- Chicago author-date
- De Schepper, Veerle, Katrijn Holvoet, Lorenzo Benedetti, Piet Seuntjens, and Peter A Vanrolleghem. 2012. “Extension of the River Water Quality Model No. 1 with the Fate of Pesticides.” JOURNAL OF HYDROINFORMATICS 14 (1): 48–64. https://doi.org/10.2166/hydro.2011.028.
- Chicago author-date (all authors)
- De Schepper, Veerle, Katrijn Holvoet, Lorenzo Benedetti, Piet Seuntjens, and Peter A Vanrolleghem. 2012. “Extension of the River Water Quality Model No. 1 with the Fate of Pesticides.” JOURNAL OF HYDROINFORMATICS 14 (1): 48–64. doi:10.2166/hydro.2011.028.
- Vancouver
- 1.De Schepper V, Holvoet K, Benedetti L, Seuntjens P, Vanrolleghem PA. Extension of the River Water Quality Model no. 1 with the fate of pesticides. JOURNAL OF HYDROINFORMATICS. 2012;14(1):48–64.
- IEEE
- [1]V. De Schepper, K. Holvoet, L. Benedetti, P. Seuntjens, and P. A. Vanrolleghem, “Extension of the River Water Quality Model no. 1 with the fate of pesticides,” JOURNAL OF HYDROINFORMATICS, vol. 14, no. 1, pp. 48–64, 2012.
@article{2135589, abstract = {{The existing River Water Quality Model No. 1 (RWQM1) was extended with processes determining the fate of non-volatile pesticides in the water phase and sediments. The exchange of pesticides between the water column and the sediment is described by three transport processes: diffusion, sedimentation and resuspension. Burial of sediments is also included. The modified model was used to simulate the concentrations of diuron and chloridazon in the river Nil. A good agreement was found between the simulated pesticide concentrations and measured values resulting from a four-month intensive monitoring campaign. The simulation results indicate that pesticide concentrations in the bulk water are not sensitive to the selected biochemical model parameters. it seems that these concentrations are mainly determined by the imposed upstream concentrations, run-off and direct losses. The high concentrations in the bulk water were not observed in the sediment pore water due to a limited exchange between the water column and the sediment. According to a sensitivity analysis, the observed pesticide concentrations are highly sensitive to the diffusion and sorption coefficients. Therefore, model users should determine these parameters with accuracy in order to reduce the degree of uncertainty in their results.}}, author = {{De Schepper, Veerle and Holvoet, Katrijn and Benedetti, Lorenzo and Seuntjens, Piet and Vanrolleghem, Peter A}}, issn = {{1464-7141}}, journal = {{JOURNAL OF HYDROINFORMATICS}}, keywords = {{river water quality,sediment,pesticide fate,modelling,diuron,chloridazon,SORPTION,COHESIVE SEDIMENT,SEDIMENT TRANSPORT,HERBICIDES,SYSTEMS,CONTAMINANTS,DEGRADATION,MANAGEMENT,EROSION,SURFACE}}, language = {{eng}}, number = {{1}}, pages = {{48--64}}, title = {{Extension of the River Water Quality Model no. 1 with the fate of pesticides}}, url = {{http://doi.org/10.2166/hydro.2011.028}}, volume = {{14}}, year = {{2012}}, }
- Altmetric
- View in Altmetric
- Web of Science
- Times cited: