Data/hora: 01/06/2024 11:36:02

Provedor de dados: 	70	
País: 	Brazil	
Título: 	Effect of companion ion on nitrate displacement through transport parameters analysis	
Autores: 	SILVA,LÍVIA P. DA; MIRANDA,JARBAS H. DE; OLIVEIRA,LUCIANO A.; JOSÉ,JEFFERSON V.	
Data: 	2015-02-01	
Ano: 	2015	
Palavras-chave: 	Breakthrough curves; Solute dynamics; Leaching.	
Resumo: 	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).	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000100051	
Editor: 	Associação Brasileira de Engenharia Agrícola	
Relação: 	10.1590/1809-4430-Eng.Agric.v35n1p51-62/2015	
Formato: 	text/html	
Fonte: 	Engenharia Agrícola  v.35 n.1 2015	
Fonte: 	info:eu-repo/semantics/openAccess