Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture

Research output: Contribution to report/book/conference proceedingsIn-proceedings paperpeer-review

Standard

Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture. / Bezerra Coelho, C.R.; Batalha, Marcia S.; Barbosa, M.C.; Jacques, Diederik; van Genuchten, M.Th.

Proceedings of the 4 International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems. Prague, Czech Republic, 2013. p. 53-62.

Research output: Contribution to report/book/conference proceedingsIn-proceedings paperpeer-review

Harvard

Bezerra Coelho, CR, Batalha, MS, Barbosa, MC, Jacques, D & van Genuchten, MT 2013, Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture. in Proceedings of the 4 International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems. Prague, Czech Republic, pp. 53-62, 4th International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems, Prague, Czech Republic, 2013-03-21.

APA

Bezerra Coelho, C. R., Batalha, M. S., Barbosa, M. C., Jacques, D., & van Genuchten, M. T. (2013). Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture. In Proceedings of the 4 International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems (pp. 53-62).

Vancouver

Bezerra Coelho CR, Batalha MS, Barbosa MC, Jacques D, van Genuchten MT. Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture. In Proceedings of the 4 International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems. Prague, Czech Republic. 2013. p. 53-62

Author

Bezerra Coelho, C.R. ; Batalha, Marcia S. ; Barbosa, M.C. ; Jacques, Diederik ; van Genuchten, M.Th. / Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture. Proceedings of the 4 International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems. Prague, Czech Republic, 2013. pp. 53-62

Bibtex - Download

@inproceedings{27246cdaeacc46978e9d1d77bbed1a4e,
title = "Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture",
abstract = "Agricultural soils generally require the use of fertilizers and soil conditioners for optimal production. Phosphate fertilizers produced from igneous phosphate rock often contain small amounts of natural radionuclides (most notably 23U and 232Th), while the byproduct phosphogypsum (dihydrated calcium sulfate) is enriched in 226Ra and 210Pb. Our study focused on the long-term (200 year) subsurface fate of 226Ra when phosphogypsurn (PG) is applied annually for 27 years as an amendment to a typical Brazilian Cerrado soil profile, after which PG applications ceased but agriculture continued. Expected water flow and solute transport processes were estimated first using the standard HYDRUS- 1 D software package assuming linear equilibrium transport, followed by simulations using the HP 1 module of HYDRUS-l D. Analyses with HPI considered a range of geochemical and physical parameters affecting Ra transport in the vadose zone, especially the effects of varying calcium concentrations resulting from the PG applications. Several aspects related to the modeling approach, such using daily versus monthly averaged weather data and assuming long-term steady-state flow conditions, are discussed also.",
keywords = "HP1, HYDRUS-1D, agricultural soils, Ra-226",
author = "{Bezerra Coelho}, C.R. and Batalha, {Marcia S.} and M.C. Barbosa and Diederik Jacques and {van Genuchten}, M.Th.",
note = "Score = 3; 4th International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems ; Conference date: 21-03-2013 Through 22-03-2013",
year = "2013",
month = jul,
language = "English",
isbn = "978-80-213-2380-3",
pages = "53--62",
booktitle = "Proceedings of the 4 International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems",

}

RIS - Download

TY - GEN

T1 - Using Hydrus-HP1 to Estimate 226Ra Transport in Soils Following the Use of Phosphogypsum in Agriculture

AU - Bezerra Coelho, C.R.

AU - Batalha, Marcia S.

AU - Barbosa, M.C.

AU - Jacques, Diederik

AU - van Genuchten, M.Th.

N1 - Score = 3

PY - 2013/7

Y1 - 2013/7

N2 - Agricultural soils generally require the use of fertilizers and soil conditioners for optimal production. Phosphate fertilizers produced from igneous phosphate rock often contain small amounts of natural radionuclides (most notably 23U and 232Th), while the byproduct phosphogypsum (dihydrated calcium sulfate) is enriched in 226Ra and 210Pb. Our study focused on the long-term (200 year) subsurface fate of 226Ra when phosphogypsurn (PG) is applied annually for 27 years as an amendment to a typical Brazilian Cerrado soil profile, after which PG applications ceased but agriculture continued. Expected water flow and solute transport processes were estimated first using the standard HYDRUS- 1 D software package assuming linear equilibrium transport, followed by simulations using the HP 1 module of HYDRUS-l D. Analyses with HPI considered a range of geochemical and physical parameters affecting Ra transport in the vadose zone, especially the effects of varying calcium concentrations resulting from the PG applications. Several aspects related to the modeling approach, such using daily versus monthly averaged weather data and assuming long-term steady-state flow conditions, are discussed also.

AB - Agricultural soils generally require the use of fertilizers and soil conditioners for optimal production. Phosphate fertilizers produced from igneous phosphate rock often contain small amounts of natural radionuclides (most notably 23U and 232Th), while the byproduct phosphogypsum (dihydrated calcium sulfate) is enriched in 226Ra and 210Pb. Our study focused on the long-term (200 year) subsurface fate of 226Ra when phosphogypsurn (PG) is applied annually for 27 years as an amendment to a typical Brazilian Cerrado soil profile, after which PG applications ceased but agriculture continued. Expected water flow and solute transport processes were estimated first using the standard HYDRUS- 1 D software package assuming linear equilibrium transport, followed by simulations using the HP 1 module of HYDRUS-l D. Analyses with HPI considered a range of geochemical and physical parameters affecting Ra transport in the vadose zone, especially the effects of varying calcium concentrations resulting from the PG applications. Several aspects related to the modeling approach, such using daily versus monthly averaged weather data and assuming long-term steady-state flow conditions, are discussed also.

KW - HP1

KW - HYDRUS-1D

KW - agricultural soils

KW - Ra-226

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_131155

UR - http://knowledgecentre.sckcen.be/so2/bibref/10562

M3 - In-proceedings paper

SN - 978-80-213-2380-3

SP - 53

EP - 62

BT - Proceedings of the 4 International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems

CY - Prague, Czech Republic

T2 - 4th International Conference HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems

Y2 - 21 March 2013 through 22 March 2013

ER -

ID: 189066