Data/hora: 02/06/2024 04:36:29

Provedor de dados: | 70
País: | Brazil
Título: | Temperature effect in potassium and nitrate ions in soil transport
Autores: | Gonçalves,Adriano D. M. A.; Miranda,Jarbas H.; Rossi,Paulo; Sabadin,José F. G.; Kamogawa,Marcos Y.
Data: | 2008-09-01
Ano: | 2008
Palavras-chave: | Breakthrough curves; Miscible displacement; Computational modeling.
Resumo: | When doing researches on solute dynamics in porous medium, the knowledge of medium characteristics and percolating liquids, as well as of external factors is very important. An important external factor is temperature and, in this sense, our purpose was determining potassium and nitrate transport parameters for different values of temperature, in miscible displacement experiments. Evaluated parameters were retardation factor (R), diffusion/dispersion coefficient (D) and dispersivity, at ambient temperature (25 up to 28 ºC), 40 ºC and 50 ºC. Salts used were potassium nitrate and potassium chlorate, prepared in a solution made up of 5 ppm nitrate and 2.000 ppm potassium, with Red-Yellow Latosol porous medium. Temperature exhibited a positive influence upon porous medium solution and upon dispersion coefficient.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162008000300005
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/S0100-69162008000300005
Formato: | text/html
Fonte: | Engenharia Agrícola  v.28 n.3 2008
Fonte: | info:eu-repo/semantics/openAccess