Fertilizer Drying
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Sanitation and Drying of Sewage Sludge on Radiant Floors Using Solar Energy and Biogas: Comparison between Different Thicknesses of Deposited Mass
ABSTRACT Sewage sludge is a solid waste composed of water, rich in organic matter and nutrients, but concentrator of pathogenic microorganisms. Its use as agricultural fertilizer in the state of Paraná, Brazil is common. However, it is necessary to eliminate or significantly reduce microorganisms by means of a hygiene process. This can be obtained thermally
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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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. Modelling of fertilizer drying in a rotary dryer: parametric sensitivity analysis
This study analyzed the influence of the following parameters: overall volumetric heat transfer coefficient, coefficient of heat loss, drying rate, specific heat of the solid and specific heat of dry air on the prediction of a model for the fertilizer drying in rotary dryers. The method of parametric sensitivity using an experimental design was employed in t
Brazilian Journal of Chemical Engineering. Publicado em: 2012-06
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4. Análise de sensibilidade paramétrica na modelagem da secagem de fertilizantes em secador rotatório
O secador rotatório figura entre os equipamentos de maior importância em processos de secagem de diversos produtos devido ao seu elevado desempenho e grande capacidade de processamento. Consiste de um tambor cilíndrico, ligeiramente inclinado em relação à horizontal, que gira em baixa velocidade. O interior do tambor é equipado com suspensores que col
Publicado em: 2010
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5. Consórcio de milho com adubos verdes e manejo da adubação nitrogenada no cultivo de feijão em sucessão no sistema integração lavoura-pecuária no cerrado / Nitrogen fertilization management in bean cultivated after maize-legumes intercropping in the Crop-Livestock Integration system in Brazilian Savannah
Ten experiments were performed involving common beans and maize intercropped with legumes and/or Brachiaria brizantha, in the summer crops of 2008/2009, 2009 winter and summer of 2009/2010 in two municipalities in the Goiás (GO) state, Brazil. In Ipameri- GO, the area was planted with soybeans for several years and corn associated with B. brizantha in crop
Publicado em: 2010
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6. Modeling and experimental study of hydrodynamic and drying characteristics of an industrial rotary dryer
The purpose of this work was to analyze the hydrodynamic and drying aspects of a rotary dryer used in a fertilizer industry. A set of equations to predict the solids holdup in the flights, the length of fall, the residence time of particles and the drying variables was evaluated by comparison to experimental measurements performed in an industrial rotary dry
Brazilian Journal of Chemical Engineering. Publicado em: 2009-06
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7. Estudos físico-químicos do efluente produzido por fossa séptica biodigestora e o impacto do seu uso no solo
The generation of effluent from the sewage treatment is daily increasing then its final disposition represents a mandatory question to be answered. An alternative is its agricultural utilization such as organic fertilizer as a partial substitute of mineral fertilizer. This practice, beyond inherent benefits due to nutrients recycling promotes agricultural wa
Publicado em: 2007
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8. Thermal drying of wastewater sludge: determination of equilibrium moisture. / Secagem térmica de lodos de esgoto: determinação da umidade de equilíbrio.
The study presents the main aspects of a thermal drying operation of the sludge produced by wastewater treatment plants, the types of equipment likely to be used for this purpose and the sorption behavior of the water contents by the dry material when in contact with the air. The thermal drying operation is an alternative to reduce the weight and volume of t
Publicado em: 2002
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9. Utilization of aquatic macrophytes in the adobes production: a case study in the Salto Grande reservoir (Americana SP) / Utilização de macrófitas aquáticas na produção de adobe: um estudo de caso no reservatório de Salto Grande (Americana - SP)
This work intends to optimise the utilization of aquatic macrophyte biomass in the adobe (a sun-dried mud brick) production, based on the study of the physical and mechanical characteristics of these bricks and the macrophytes biomass estimate as well as their chemical characteristics. The research was developed in the Salto Grande Reservoir region, in Ameri
Publicado em: 2002