Desenvolvimento de mudas de pinhão manso (Jatropha Curcas L.) irrigado com águas residuárias da produção de biodiesel

• Autor(a) principal: Pinto, Claudio Luis Souza
• Data de Publicação: 2016
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/14311
• topic: Reuse of wastewater; Irrigation; Jatropha; Biodiesel; Reuso de águas residuárias; Irrigação; Pinhão manso; Biodiesel; Águas residuais; Pinhão-Manso Irrigação; Biodiesel; CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL

The objective of this work was to evaluate the feasibility of reuse of wastewater from the biodiesel production with high potassium concentration in the irrigation of the jatropha destined to biodiesel production. The waters were supplied and collected at a company producing biodiesel after treatment and chemically characterized. It was prepared in four dilutions (Treatments -T1 (5%), T2 (10%), T3 (20%) and T4 (40%)) in water and compared with control treatment -T0 (pure water). For the tests were prepared 5L vessels that received soil (ultisol) of the region and seeds of jatropha, in addition to mineral fertilization of macro nutrients. The fertilization was in two plots: considering the potassium in the wastewater (fertilization of nitrogen and phosphorus) and disregarding the potassium in the wastewater (Fertilization of nitrogen, phosphorus and potassium). The variables of the development of the plants were analyzed as germination test, shoot growth and root and stem diameter, as well as macros and micronutrients in the fresh and dry mass of the plants. The tests lasted 60 days, the recommended period for the seedlings to go into the field. The results showed that it is possible to use the wastewater in the T1 and T2 treatments, which do not differ between them (p≤0.01) and (p≤0.05) in substitution for the mineral potassium fertilization, when compared to the control treatment. In this way this water can be used in the fertigation of jatropha in poor soils of potassium