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| Kunzler,Kathia R.; Gomes,Simone D.; Piana,Pitágoras A.; Torres,Douglas G. B.; Vilas Boas,Marcio A.; Tavares,Maria H. F.. |
| The use of anaerobic reactors with media support in the treatment of wastewater from the cassava starch industry has emerged as a viable option because it allows the application of high organic loads and a significant reduction of the HDT needed for the treatment. This research aimed at studying the process of biodigestion in two anaerobic reactors with bamboo support, in the treatment of effluent of cassava starch, by evaluating their performance. The two reactors used present the following diameter: length ratio, 1:6 and 1:3. The organic loads applied to the systems were 0.519, 1.156, 1.471, 3.049, 4.347, 4.708 and 5.601g.L-1.d-1. Regarding the efficiency of removal of COD, TS and TVS, no statistically significant differences were obtained between the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodigestion; Organic load; Piston flow. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400003 |
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| Kuczman,Osvaldo; Tavares,Maria H. F.; Gomes,Simone D.; Guedes,Luciana P. C.; Grisotti,Geovane. |
| The cassava starch industries generate a large volume of wastewater effluent that, stabilized in ponds, wastes its biogas energy and pollutes the atmosphere. To contribute with the reversion of this reality, this manipueira treatment research was developed in one phase anaerobic horizontal pilot reactor with support medium in bamboo pieces. The reactor was excavated into the ground and sealed with geomembrane in HDPE, having a volume equal to 33.6 m³ and continuous feeding by gravity. The stability indicators were pH, volatile acidity/total alkalinity ratio and biogas production. The statistical analyses were performed by a completely randomized design, with answers submitted to multivariate analysis. The organical loads in COD were 0.556; 0.670; 0.678 and... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Biodigester; Biogas; Anaerobic digestion; Cassava; Cassava wastewater. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600021 |
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| Soncela,Rosimaldo; Sampaio,Silvio C.; Vilas Boas,Marcio A.; Tavares,Maria H. F.; Smanhotto,Adriana. |
| The determination of volumetric water content of soils is an important factor in irrigation management. Among the indirect methods for estimating, the time-domain reflectometry (TDR) technique has received a significant attention. Like any other technique, it has advantages and disadvantages, but its greatest disadvantage is the need of calibration and high cost of acquisition. The main goal of this study was to establish a calibration model for the TDR equipment, Trase System Model 6050X1, to estimate the volumetric water content in a Distroferric Red Latosol. The calibration was carried out in a laboratory with disturbed soil samples under study, packed in PVC columns of a volume of 0.0078m³. The TDR probes were handcrafted with three rods and 0.20m... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apparent dielectric constant; Time-domain reflectometry; Soil water content. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000500004 |
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| Jordan,Rodrigo A.; Tavares,Maria H. F.. |
| Excluindo-se a ração, o insumo mais utilizado na cadeia produtiva da avicultura é a energia elétrica, principalmente na produção de pintinhos de um dia, ocorrendo consumo em todas as fases, desde a obtenção do ovo até a incubação. Para a produção do ovo consome-se grande quantidade de energia elétrica nos sistemas de iluminação dos aviários, devido à necessidade de exposição da poedeira à luz no comprimento de cor amarela. A redução dos gastos com energia elétrica está ligada à melhoria dos sistemas de iluminação, já que o sistema usual é formado por lâmpadas incandescentes de grande potência, baixa eficiência e vida útil curta. Assim, através deste trabalho, desenvolvido em uma granja do Sudoeste do Paraná, objetivou-se desenvolver um sistema de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Produção avícola; Programa de luz; Iluminância; Energia elétrica; Cálculo luminotécnico. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662005000300019 |
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