Aerobic Digestion
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Stabilization of confined beef cattle manure: characteristics of produced fertilizers
ABSTRACT The growing demand for animal protein is directly related to the feedlot system of animals and their assumptions, such as the waste management. The characterization of the final products becomes an important factor in decision making by one or by other process. The objective was highlight characteristics that fertilizers present due to the used of s
Eng. Agríc.. Publicado em: 2016-10
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2. Effectiveness of Five Biosolids as Nitrogen Sources to Produce Single and Cumulative Ryegrass Harvests in Two Australian Soils
ABSTRACT Biosolids have been produced by various stabilization processes of sewage sludge, but little attention has been given to the effects of such treatments on their effectiveness to supply nitrogen for plant growth. Here, we investigated these effects by cultivating Lolium perenne (ryegrass) in two Australian soils, a sandy Spodosol and a clayey Oxisol.
Rev. Bras. Ciênc. Solo. Publicado em: 23/06/2016
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3. Autonomic regulation of heart rate during specific dynamic action associated with digestion in the bullfrog Lithobates catesbeianus
ABSTRACT Feeding causes a substantial rise in the aerobic metabolism of all vertebrates, which is met by a rise in heart rate to secure adequate oxygen delivery, as well as intestinal nutrient absorption and transport between organs. To study the autonomic regulation of this postprandial tachycardia in an amphibian, we placed arterial catheters in individual
Zoologia (Curitiba). Publicado em: 2015-12
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4. Characterization and treatment of sludge originated from septic tanks / Caracterização e pré-tratamento de lodo de fossas e de tanques sépticos
Septic tanks are small structures used for partial treatment of wastewater produced from urban and rural areas. It utilization is justify mainly by simplicity of construction and for being a technology that requires low operational dedication. Although it is a technology vastly used in Brazil, there is not much information about the characteristics of the wa
Publicado em: 2009
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5. Thermogenesis and post-prandial termophly in Bothrops moojeni (Serpentes: Viperidae) in captivity / Termofilia e termogênese pós-prandiais em Bothrops moojeni (Serpentes:Viperidae) em cativeiro
The study of the preferred temperatures and thermophilic behavior is essential to understand the snakes thermal biology. Although some studies have been reported, most of them are focused in temperate and diurnal species. Thus, little is known about the tropical and sub-tropical nocturnal species. In the present study , a video-monitored arena with a thermal
Publicado em: 2009
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6. Avaliação da aplicação de acido folico em tratamento aerobio de aguas residuarias. / Evaluation of application of folic acid in aerobic wastewater treatment .
They are deficiency of vitamins in sludge of biological wastewater treatment, especially the folic acid, that acts as micronutrient for certain bacteria and stimulating its growth. This work evaluated the effect of different concentrations of folic acid on the sludge in normal physiologic conditions and in endogenous respiration. The system was carried out b
Publicado em: 2007
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7. Avaliação da partida de reator anaeróbio de fluxo ascendente e manta de lodo (UASB), em escala real, sob condições hidráulicas desfavoráveis / Start-up of a full-scale upflow anaerobic sludge blanket (UASB) reactor, treating domestic sewage, under unfavorable hydraulic conditions
Este estudo teve como objetivo avaliar a partida de reator anaeróbio de fluxo ascendente e manta de lodo (UASB), em escala real, no tratamento de esgoto sanitário, sob condições hidráulicas desfavoráveis. O reator UASB faz parte do sistema de tratamento da ETE Água Vermelha, e é seguido de um biofiltro aerado submerso e de uma unidade de desinfecçã
Publicado em: 2007
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8. Perdas fermentativas na ensilagem, parâmetros digestivos e desempenho de bovinos de corte alimentados com rações contendo silagens de cana-de-açúcar / Fermentative losses on ensiling, digestive parameters and performance of beef bulls fed sugar cane silage containing rations
The goal of this trial was to evaluate ensiling associated factors influencing sugar cane (Saccharum officinarum L.)silages, mainly the use of chemical and microbial additives on the chemical composition, fermentative losses, nutrient digestion and performance of beef cattle. On the first trial, sugar cane varieties were evaluated across harvesting forage ag
Publicado em: 2006
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9. Enteric bacteria in aerobically digested sludge.
Indicator bacteria, Salmonella spp., and total aerobic bacteria were determined in samples of undigested sludge and sludge that had been treated by one or two stages of aerobic digestion. Aerobic sludge digestion reduced the level of indicator bacteria by 1 to 2 log10 per g. The level of Salmonella spp. was also reduced during aerobic treatment of sludge. In
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10. Bacterial survival and association with sludge flocs during aerobic and anaerobic digestion of wastewater sludge under laboratory conditions.
The fate of indicator bacteria, a bacterial pathogen, and total aerobic bacteria during aerobic and anaerobic digestion of wastewater sludge under laboratory conditions was determined. Correlation coefficients were calculated between physical and chemical parameters (temperature, dissolved oxygen, pH, total solids, and volatile solids) and either the daily c
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11. Recovery of indigenous enteroviruses from raw and digested sewage sludges.
We examined different types of raw sewage sludge treatment, including consolidation, anaerobic mesophilic digestion with subsequent consolidation, and aerobic-thermophilic digestion. Of these, the most efficient reduction in infectious virus titer was achieved by mesophilic digestion with subsequent consolidation, although a pilot-scale aerobic-thermophilic
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12. Survival rates of parasite eggs in sludge during aerobic and anaerobic digestion.
The effects of mesothermic anaerobic or aerobic sludge digestion on survival of eggs from the roundworms Ascaris suum, toxocara canis, Trichuris vulpis, and Trichuris suis and from the rat tapeworm Hymenolepis diminuta were studied. Destruction of eggs throughout a 15-day treatment period, as well as their viabilities after reisolation, was analyzed. The lab