Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of companion ion on nitrate displacement through transport parameters analysis

Full text
Author(s):
da Silva, Livia P. [1] ; de Miranda, Jarbas H. [2] ; Oliveira, Luciano A. [3] ; Jose, Jefferson V. [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, CENA, Div Funcionamento Ecossistemas Trop, Ciencias Energia Nucl Agr Ambiente, BR-13400970 Piracicaba, SP - Brazil
[2] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Engn Biossistemas, BR-13418900 Piracicaba, SP - Brazil
[3] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Engn Biossistemas, Engn Sistemas Agr, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Engenharia Agrícola; v. 35, n. 1, p. 51-62, JAN-FEB 2015.
Web of Science Citations: 1
Abstract

Nitrate is the main form of nitrogen associated with water contamination; the high mobility of this species in soil justifies the concern regarding nitrogen management in agricultural soils. Therefore, the objective of this research was to assess the effect of companion cation on nitrate displacement, by analyzing nitrate transport parameters through Breakthrough Curves (BTCs) and their settings made by numerical model (STANMOD). The experiment was carried out in the Soil and Water Quality Laboratory of the Department of Biosystems Engineering, "Luiz de Queiroz" College of Agriculture in Piracicaba (SP), Brazil. It was performed using saturated soil columns in steady-state flow condition, in which two different sources of inorganic nitrate Ca(NO3)2 and NH4NO3 were applied at a concentration of 50 mg L-1 NO3-. Each column was filled with either a Red-Yellow Oxisol (S1) or an Alfisol (S2). Results are indicative that the companion ion had no effect on nitrate displacement. However, nitrate transport was influenced by soil texture, particle aggregation, solution speed in soil and organic matter presence. Nitrate mobility was higher in the Alfisol (S2). (AU)

FAPESP's process: 11/16438-0 - Influence of accompanying ion on transport parameters of the nitrate in soil
Grantee:Lívia Previatello da Silva
Support Opportunities: Scholarships in Brazil - Master