17 documents found, page 1 of 2
Correlação entre condição da superfície do solo agrícola e o coeficiente de abs...
Freire, Rosane [UNESP]; Tavares, Célia Regina Granhen; Soares, Paulo Fernando; Abreu, Marco Henrique Meletti DeMade available in DSpace on 2015-02-02T12:39:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-12-01Bitstream added on 2015-02-02T13:07:59Z : No. of bitstreams: 1 S1980-993X2014000400013.pdf: 617673 bytes, checksum: 2b4f01038937df89591b62dcbe8fbc63 (MD5); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Coordenação de Ap...
ASSESSMENT OF TURBIDITY AS A QUICK TOOL TO QUANTIFY THE SEDIMENT TRANSPORT
Schneider, Roselene Maria; Freire, Rosane; Boina, Welliton Leandro de Oliveira; Cossich, Eneide Sala; Soares, Paulo FernandoAVALIAÇÃO DA TURBIDEZ COMO FERRAMENTA RÁPIDA PARA QUANTIFICAR O TRANSPORTE DE SEDIMENTOS Erosões em vertentes ou em margens de rios são consequências da ação de vários mecanismos capazes de romper o equilíbrio do sistema natural. Entre os mecanismos naturais, a ação dos eventos pluviométricos sobre diferentes usos do solo merece destaque, pois dependendo de sua intensidade e duração, podem gerar altas taxas ero...
Nitrogen forms and total phosphorus in water courses: a study at Maringá stream...
Freire, Rosane; Bonifácio, Cássia Maria; Freitas, Fabrício Hernandes de; Schneider, Roselene Maria; Tavares, Célia Regina GranhenThis paper aimed to monitor the nitrogen compounds and total phosphorous in the Maringá Stream watershed in order to investigate the spatial and temporal variations in the water quality. For this, samplings were collected from seven sites during the period from October 2008 to September 2009. The results indicated the most critical stretches of water pollution with the inflow of the discharges from a sewage tre...
Effects of coconut granular activated carbon pretreatment on membrane filtratio...
Silva, Flávia Vieira da; Yamaguchi, Natália Ueda; Lovato, Gilselaine Afonso; Silva, Fernando Alves da; Reis, Miria Hespanhol MirandaThis study evaluates the performance of a polymeric microfiltration membrane, as well as its combination with a coconut granular activated carbon (GAC) pretreatment, in a gravitational filtration module, to improve the quality of water destined to human consumption. The proposed membrane and adsorbent were thoroughly characterized using instrumental techniques, such as contact angle, Brunauer–Emmett–Teller) and...
Application of modified membranes in drinking water treatment
Silva, Flávia Vieira da; Yamaguchi, Natália Ueda; Vieira, Angelica M. Salcedo; Amorim, M. T. Pessoa de; Tavares, C. J.; Tavares, Célia Regina GranhenThis paper presents filtration results obtained with commercial acetate membrane with a pore diameter of 0.45 μm, unmodified and modified with TiO2, bearing in mind drinking water treatment. The experimental filtration set-up that was used consisted in the gravitational filtration system, whereas the accomplished tests that were endured consisted of hydraulic permeability of the modified and unmodified membrane...
Drinking water treatment in a gravimetric flow system with TiO2 coated membranes
Bergamasco, Rosangêla; Silva, Flávia Vieira da; Arakawa, Flávia Sayuri; Yamaguchi, Yamaguchi; Reis, Miria Hespanhol Miranda; Tavares, C. J.This paper presents filtration results for drinking water treatment obtained with a commercial cellulose acetate membrane of 0.45 μm pore diameter, with and without TiO2 coating. The deposition of titanium dioxide thin films onto membrane surface was made by pulsed-frequency d.c. reactive magnetron sputtering at room temperature from a high purity Ti target in Ar/O2/N2 atmosphere, at different conditions for ca...
Evaluation of the COD and the C/N ratio in the anaerobic treatment of fruit and...
Sgorlon, Juliana Guerra; Rizk, Maria Cristina; Bergamasco, Rosângela; Tavares, Célia Regina GranhenDaily, there are generated large quantities of fruit and vegetable wastes on wholesale fruit and vegetable markets, local orthofruit shops and supermarkets. The excessive generation of these wastes can cause environmental problems. So, the aim of this study was to evaluate the anaerobic biodegradation of fruit and vegetable wastes by the COD and C/N ratio monitoring. The wastes were collected in a central distr...
The benefits of using natural coagulants to obtain potable water - doi: 10.4025...
Bongiovani, Milene Carvalho; Konradt-Moraes, Leila Cristina; Bergamasco, Rosângela; Lourenço, Beatriz Sayuri Sakaniva; Tavares, Célia Regina GranhenThis work aims to evaluate the benefits of obtaining potable water from natural coagulants, in function of the removal of the parameters color, turbidity and compounds with absorbing in UV-254 nm, using Tanfloc SS as a coagulant. To that end, coagulation/flocculation/sedimentation tests were performed in jar test with surface water featuring high color/turbidity. The coagulation pH (3.0 to 9.0) and the concentr...
Knowledge and utilization of basic health service by families in a Southern mun...
Scochi, Maria José; Mathias, Thaís Aidar de Freitas; Souza, Regina Kazue Tanno de; Gazola, Sebastião; Tavares, Célia Regina GranhenThis investigation was made to verify the knowledge and use of basic health services (BHS) by families resident in the East side of a municipality of Paraná State. Three hundred and eighty five families, selected from the Basic Health Service System were interviewed. The instrument, with closed questions, previously tested, was applied by trained Nursing and Statistics undergraduate students, in February and Ma...
Bioleaching of metals from tannery sludge in two stages: effect of pH - DOI: 10...
Silva, Fábio Moreira da; Ramos, Fabrícia Maribondo da Silva; Costa, Antonio Carlos Augusto da; Tavares, Célia Regina GranhenThe present work assessed the effect of the pH in the bioleaching of Cr and other metals from tannery sludge with stage separation of biologic oxidation of elemental sulfur and leaching of solid waste. The concentration of elemental sulfur was 5 g L-1. The final bioleaching pH ranged from 3.0 to 1.0. The concentration of sludge solids was 100 g L-1 and the temperatures were 298.15 and 308.15 K. The leaching ext...