Percolated Water
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Ensaios de infiltração em modelos experimentais de coberturas secas utilizando cinzas de carvão mineral da Termelétrica do Pecém
RESUMO O elevado volume de cinzas de carvão mineral acumulado nas bacias de armazenamento da Usina Termoelétrica Energia Pecém resultou em uma demanda por pesquisas que propusessem diferentes formas de utilização desse resíduo, de modo a dar um destino final para este material. O uso das cinzas na forma de coberturas secas de depósitos de resíduos se
Matéria (Rio J.). Publicado em: 25/11/2019
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2. Boron Leaching Decreases withIncreases on Soil pH
ABSTRACT Management of boron fertilization depends on the magnitude of B leaching in the soil profile, which varies proportionally with the concentration of B in the soil solution, which, in turn, decreases as the soil pH increases due to the higher sorption of B on soil solid surfaces. The objective of this study was to quantify the effect of liming and rat
Rev. Bras. Ciênc. Solo. Publicado em: 26/04/2016
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3. Percolação de poluentes em solos após aplicação de resíduos de fábrica de papel reciclado.
O estudo dos efeitos da aplicação de resíduos de fábrica de papel reciclado na água percolada pelo solo foi o objetivo deste trabalho. A aplicação de resíduos de fábricas de papel em solos tem sido crescente e despertado a atenção pela possibilidade de contaminação do meio ambiente, principalmente pela poluição das águas. Com o uso de resídu
Floresta. Publicado em: 2011
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4. Avaliação da ecotoxicidade de percolados em áreas de disposição de resíduos na região metropolitana de Natal/RN
Leachates are effluent produced by decomposition of solid waste, they have complex composition and can be highly toxic. Therefore such percolated liquid should be collected and treated properly to avoid environmental contamination of soil and of water bodies. The objective of this study was to evaluate the toxicity through ecotoxicological tests with Cerioda
Publicado em: 2010
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5. Electrochemistry control of humic acid and algae using a reactor with diamond film electrode / Controle eletroquimico de acido humico e algas usando um reator com eletrodo de filme de diamante
The presence of humic acids and algae in supplying water and swiming pools may be harmful to the health. This work reports the results obtained in electrooxidation of humic acid and algae using a boron doped diamond (BDD) anode. In this treatment, the solution is percolated through a filter press reactor with a BDD anode polarized at constant current. The ef
Publicado em: 2007
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6. Relaxação em sistemas moleculares complexos / Relaxation in complex molecular systems
In this Thesis are presented studies by Molecular Dynamics simulations on some molecular systems presenting complex dynamics behavior (i.e., relaxation process caracterized by multiple time scales), including saccharides aqueous solutions, double helix DNA systems, air/water interfaces containing surfactants, and supercooled water. These systems, although cl
Publicado em: 2005
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7. SEPARAÇÃO E PRÉ-CONCENTRAÇÃO ON-LINE PARA ESPECIAÇÃO DE Hg EM CHORUME POR FI-CVG AAS
In Brazil, the urban solid wastes are usually discharged on landfill sites that are percolated by rainwater. This water leaches the wastes producing an effluent that is characterized by high concentration of organic matter, salts, suspended particulates and heavy metals. Mercury is one of the metals that is frequently present in different chemical forms whic
Publicado em: 2005
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8. Heat transfer in packed beds: experimental evaluation of one-phase water flow
Experimental heat transfer studies were carried out in 50.8 mm diameter packed beds of glass beads percolated by water and heated from the wall. The tube-to-particle diameter ratio (D/d p) ranged from 1.72 to 13.7 and the water flow rate from 1.1 to 9.9 l/min. Bed heights ranged from 100 mm to 700 mm. The radial temperature was measured above the bed surface
Brazilian Journal of Chemical Engineering. Publicado em: 2004-01
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9. Estudo experimental da condutividade hidrÃulica de solo argiloso compactado: contaminaÃÃo por gasolina
This research studies the hydraulic conductivity in compacted clay obtained of the FormaÃÃo Barreira, when percolated by pollutants fluids. The fluids used were: water, gasoline, saturated aqueous solution of chloride of sodium and gasoline diluted in water. Physical and chemical characterization experiments of the soil and chemical analyses of the liquids
Publicado em: 2004
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10. Preliminary assays indicate that Antonia ovata (Loganiaceae) and Derris amazonica (Papilionaceae), ichthyotoxic plants used for fishing in Roraima, Brazil, have an insecticide effect on Lutzomyia longipalpis (Diptera: Psychodidae: Phlebotominae)
Laboratory-reared Lutzomyia longipalpis (Lutz and Neiva 1912) was tested with extracts of two ichthyotoxic plants, known as timbós, used as fishing poison in the Amazon. Phlebotomines, L. longipalpis, and plants, Antonia ovata and Derris amazonica, were collected in the Raposa-Serra do Sol Indian Reserve, a focus of visceral leishmaniasis in the State of Ro
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-07
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11. Penetration of different human pathogenic viruses into sand columns percolated with distilled water, groundwater, or wastewater.
The adsorption of several enteroviruses and rotavirus SA11 to sand from an aquifer in the Federal Republic of Germany was estimated in sand-filled columns loaded with ca. 10(7) PFU and run at a velocity of 2.5 m/day for 12 h. After either distilled water, groundwater, secondary effluent, or tertiary effluent was percolated, the sand core was slowly extruded
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12. Isolation of Arthrobacter Bacteriophage from Soil †
Soil was percolated with water and various nutrient solutions, and then the percolates were analyzed for bacteriophages which produced plaques on various Arthrobacter strains. The water percolates did not contain detectable phage. In contrast, phages for A. globiformis strains ATCC 8010 and 4336, and for several recent Arthrobacter species soil isolates, wer