Agricultural Wastes
Mostrando 25-36 de 43 artigos, teses e dissertações.
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25. Water: economy and efficient use in urban environment / Água: economia e uso eficiente no meio urbano
Water is a vital element for life, especially for the human race. The problems caused by population growth and changes of habits in cities have a great influence in the state of water supply Increasing volumes of water are seized daily for agricultural, industrial and urban use and returned to the environment after that. Many times these water wastes hav
Publicado em: 2007
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26. Study on the application of microwaves to the drying of osmotically treated bannanas. / Estudo da aplicação de microondas na secagem de bananas tratadas osmoticamente.
Brasil is one of the largest banana producer in the world, with the crop being predominantly consumed in the internal market, as table in natura fruit and as processed foods. The implementation of methods to transform such a raw material becomes attractive as long as it takes advantage of the production surplus, reduces the crop wastes and allows aggregating
Publicado em: 2007
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27. Avaliação de impactos ambientais nos tributários do lago Paranoá, Brasília - DF
The high level of urbanization in Distrito Federal in Brazil is contributing to modify the environment particularly the quality of surface water resources. The historical of environment aggression to the Paranoá Lake through urban expansion, land use and land occupation, is studied as environmental changes. In this work, physical-chemistry conditions and ge
Publicado em: 2007
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28. Influência do lodo de esgoto na nodulação e no desenvolvimento do Caupi (Vigna unguiculata "L" Walp)
The intense urban growth, production of domestic and industrial residues has been increased, mainly sewage sludge. This residue has high amount of pathogenic organisms and heavy metals. The viable alternative for this residue destination is its use in agriculture improving the chemical, physical and biological soil characteristics. Allied of the capacity of
Publicado em: 2007
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29. Teores de nutrientes no solo, produção de fitomassa e qualidade da pastagem de Tifton 85, produzida em área submetida à aplicação de dejetos suínos
The utilization of swine dejections as fertilizer in cultivated areas with Tifton 85 pasture, has been a common practice realized by producers in the west of Paraná state, Brazil, however the number of researches dedicated to the evaluation of this practice is still small. This work was carried out with objective of evaluating the effect of the application
Publicado em: 2006
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30. Caracterização química de resíduos da produção de biodiesel compostados com adição mineral / Chemical characterization of residues from biodiesel production composted with mineral addiction
The production of biodiesel has in agriculture its base of sustentation. The culture of sugar cane and oleaginous species as castor oil plant after processing to obtain alcohol and vegetal oil, respectively, generates organic residues. These residues when used in agriculture in the compost form make possible the reduction of production costs and increase of
Publicado em: 2006
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31. Chemical analysis of solid waste for agricultural and environmental studies / Analise quimica de residuos solidos para estudos agroambientais
The practice of using organic and inorganic wastes as fertilizers is an increasingly important agricultural practice. The risks of indiscriminate disposal of waste onto the soil are associated mainly with the transport of pollutants by the infiltration of percolated liquids, which are responsible for the contamination of the subsoil and underground waters. B
Publicado em: 2005
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32. Gerenciamento de residuo solido : Assentamento Sumare II, Sumare-SP / Solid waste management: Assentamento Sumare II, Sumare-SP
O meio rural não é mais um espaço onde são desenvolvidas atividades exclusivamente agrícolas, já que, tem passado por intensas mudanças, que induzem a pluriatividade, fazendo com que o espaço seja tido como um continuum da zona urbana. Estas mudanças que assemelham o rural ao urbano trazem, a reboque desta reestruturação, mazelas há muito discuti
Publicado em: 2005
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33. Quality of yellow passion fruit silage in the pure forms and in mixture with additives. / Qualidade da silagem do resÃduo do fruto de maracujà amarelo nas formas pura e em mistura com aditivos
Brazil possesses a huge amount of residues and by-products of agriculture and of agroindustry with potential of use in ruminant feeding. A few limitations may cause some of these additives to have a more restricted utilization, among them the low percentage of DM, which impairs ensiling process, demanding the adoption of procedures which modify that picture
Publicado em: 2005
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34. Cinética de degradação microbiológica de torta de filtro no solo na presença de cádmio e níquel. / Filter cake microbiologycal degradation kinetics in soil on the presence of cadmium and nickel.
It was evaluated the effect of doses of nickel and cadmium on the degradation of the organic matter applied to soil by means of filter cake in a respirometry trial. Soil employed was Latossolo Vermelho Amarelo, sampled in the field at depth of 0-20 cm. It were applied doses of 0; 28; 56; 112 and 200 mg kg-1 Cd and 0; 62,5; 125; 250 and 500 mg kg-1 Ni as CdCl
Publicado em: 2005
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35. Production of fungal protein by solid substrate fermentation of cactus Cereus peruvianus and Opuntia ficus indica
Agricultural wastes from cactus Cereus peruvianus and Opuntia ficus indica were investigated for protein production by solid substrate fermentation. Firstly, the polyelectrolytes were extracted and used in water cleaning as auxiliary of flocculation and coagulation. The remaining fibrous material and peels were used as substrate for fermentation with Aspergi
Química Nova. Publicado em: 2001-06
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36. Extração e determinação simultanea por emissão em plasma de nutrientes e elementos toxicos em amostras de interesse agronomico
The objective of this study was to evaluate chemical elements extraction processes for soil, plant and residue analysis by inductively coupled plasma atomic emission spectrometry (ICP-AES) technique. The critical step of the chemical analysis using the ICP-AES technique, is the sample extraction or dissolution. In the case of soil analysis, boron was a troub
Publicado em: 1997