2002
DOI: 10.1590/s1519-69842002000400019
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Utilization of macrophyte biofilter in effluent from aquaculture: I. Floating plant

Abstract: The objective of this work was to manufacture a low-cost biofilter, made of floating macrophyte (Eichhornia crassipes). Limnological studies were conducted 7 days after the macrophytes were placed in the biofilter, and continued over a period of 30 consecutive days. During rainy and dry seasons, and high production period, samples were taken three times a week. The lowest levels of nitrogen compounds were observed in the July/August period, which corresponded to lower fish production and low supply rattion in … Show more

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Cited by 26 publications
(18 citation statements)
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“…Comparing with a wastewater treatment of fish farming composed of only Eichhornia crassipes [19], the values of pH and Alk were similar and those of EC was higher in this study. Due to the excess of organic matter, which, in the decomposition process, releases carbonic gas and forms carbonate and bicarbonate, responsible for an increased alkalinity and pH stabilization, together with the release of ions to water, increasing EC values.…”
Section: Discussionsupporting
confidence: 56%
“…Comparing with a wastewater treatment of fish farming composed of only Eichhornia crassipes [19], the values of pH and Alk were similar and those of EC was higher in this study. Due to the excess of organic matter, which, in the decomposition process, releases carbonic gas and forms carbonate and bicarbonate, responsible for an increased alkalinity and pH stabilization, together with the release of ions to water, increasing EC values.…”
Section: Discussionsupporting
confidence: 56%
“…Corroborando com esta hipótese, Gentelini et al (2008), utilizando o aguapé em sistema de tratamento de efluente de piscicultura orgânica, obteve no experimento uma produção média de 8,03 kg m -2 , produção esta inferior à encontrada neste experimento, possivelmente devido a temperaturas baixas (18,7 °C). Além da temperatura, a disponibilidade da intensidade luminosa e concentrações de nutrientes como o fósforo podem ter influenciado na produtividade destas macrófitas (Sipaúba-Tavares et al 2002).…”
Section: Discussionunclassified
“…Uma alternativa para o tratamento e minimização dos efluentes gerados na piscicultura vem sendo proposta por vários autores, onde o uso de biofiltros composto por macrófitas aquáticas parece ser uma solução barata e viável (Sipaúba-Tavares et al 2002, 2003Crema 2005;Ferdoushi et al 2008). As principais vantagens dos sistemas de filtros com macrófitas aquáticas são o baixo custo de implementação e manutenção, e a comprovada eficiência no tratamento de diversos tipos de efluentes (Klomjek e Nitisoravut 2005).…”
Section: Introductionunclassified
“…As macrófi tas aquáticas também podem ser empregadas como biofi ltro de efl uentes de tanques de piscicultura (Henry- Silva & Camargo 2006, Sipaúba-Tavares et al 2002.…”
Section: Emprego Do Crescimento Controlado Das Macrófitas Aquáticasunclassified