|
|
|
|
|
| Freitas,Cley Anderson Silva de; Bezerra,Francisco Marcus Lima; Silva,Alexandre Reuber Almeida da; Albiero,Daniel; Nascimento,José Adeilson Medeiros do. |
| ABSTRACT Using energy balance methodology, this study compared the sustainability of ethanol synthesis from sugarcane irrigated with different replacement levels based on the evaporation estimated in a Class A pan (ECA), using treated domestic sewage effluent and groundwater as the water source, in Aquiraz, in the State of Ceará. The adopted statistical design was of randomised blocks in split plots, with four replications. Two water sources (treated sewage effluent and groundwater) were evaluated in the plots, and five irrigation levels (50, 75, 100, 125 and 150% of the ECA) were evaluated in the split plots. Irrigation with treated domestic sewage effluent results in greater energy expenditure. The irrigation depth relative to 150% of the ECA expends the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reuse of water; Energy balance; Saccharum officinarum L.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300389 |
| |
|
|
| Francisco,João Paulo; Folegatti,Marcos Vinícius; Silva,Leonardo Batista Duarte; Silva,Jonathas Batista Gonçalves; Diotto,Adriano Valentim. |
| ABSTRACT The aim of this work was to evaluate the change in electrical conductivity and pH of a soil solution and its composition, with regard to the levels of nitrate and potassium, in a Latosol cultivated with pineapple and subjected to applications of different levels of vinasse. The experiment was conducted in a greenhouse at the Department of Biosystems Engineering of ESALQ/USP. The treatments comprised the application of five levels of vinasse: T1 - 0 m3 ha-1, T2 - 231 m3 ha-1, T3 - 347 m3 ha-1, T4 - 462 m3 ha-1, and T5 - 578 m3 ha-1. Application was every 20 days, using a localised irrigation system with emitters having a nominal flow rate of 4 L h-1 and spaced 0.40 m apart. The applied doses of vinasse were calculated by following the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Effluent; Reuse of water; Leaching. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000200229 |
| |
|
|
|
