<b>Calcium-free and low-calcium water production for aquaculture research</b> - doi: 10.4025/actascianimsci.v33i1.10686

  • Paloma Damasceno Pinheiro Universidade Federal do Ceará
  • Davi de Holanda Cavalcante Universidade Federal do Ceará
  • Manuella Gazzineo de Moraes Universidade Federal do Ceará
  • Marcelo Vinícius do Carmo e Sá Universidade Federal do Ceará
Palavras-chave: EDTA, calcium hardness, fish culture

Resumo

The present work aimed to obtain a mathematical expression to calculate the amount of EDTA required to produce calcium-free and low-calcium water ([Ca2+] < 5 mg L-1). Initially, a pilot test was carried out to confirm the effectiveness of EDTA as a chelating agent of waterborne calcium and to evaluate its effect on water pH. Five application rates of Na-EDTA (25, 50, 75, 100 and 125 mg L-1) were tested. The concentration of calcium in water was determined initially (before the application of EDTA) and after one hour. Linear regression analysis was performed to find out the relationship between the desired calcium concentration in water and the required EDTA: initial calcium hardness ratio. The expression ŷ = -0.0911x + 3.3628 (R² = 0.933) was derived from the linear regression analysis carried out, in which x represents the desired calcium concentration in water and y the required EDTA: initial calcium hardness ratio.

Downloads

Não há dados estatísticos.

Biografia do Autor

Marcelo Vinícius do Carmo e Sá, Universidade Federal do Ceará
Professor Adjunto do Departamento de Engenharia de Pesca, Centro de Ciências Agrárias, Universidade Federal do Ceará (Fortaleza, Ceará)
Publicado
2011-02-02
Como Citar
Pinheiro, P. D., Cavalcante, D. de H., Moraes, M. G. de, & Sá, M. V. do C. e. (2011). <b>Calcium-free and low-calcium water production for aquaculture research</b&gt; - doi: 10.4025/actascianimsci.v33i1.10686. Acta Scientiarum. Animal Sciences, 33(1), 47-49. https://doi.org/10.4025/actascianimsci.v33i1.10686
Seção
Produção Animal

0.9
2019CiteScore
 
 
29th percentile
Powered by  Scopus