Agricultural Wastes
Mostrando 13-24 de 43 artigos, teses e dissertações.
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13. Desenvolvimento e avaliação de um gaseificador de biomassa e estudo do potencial de produção de biogás com resíduos agrícolas e da avicultura / Development and evaluation of a biomass gasifier and investigation of biogas production potential with agricultural and poultry wastes
Com o objetivo de desenvolver soluções alternativas para aquecimento de ar, que pode ser usado para o condicionamento térmico de aviários, secagem de produtos agrícolas e desidratação de frutas, foram estudadas a gaseificação de biomassa e a biodigestão anaeróbia de cama de aviário, esterco de galinhas, palha de trigo e silagem de centeio. O trab
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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14. Aplicações da celulose de palha de cana-de-açúcar: obtenção de derivados partindo de celulose branqueada e de biocompósitos com poliuretana obtida a partir de óleo de mamona (Ricinus communis L.) / Applications of sugarcane straw cellulose: obtainment of derivatives from bleached cellulose and biocomposites with polyurethane obtained from castor oil (Ricinus communis L.)
The sugarcane processing generates various agricultural byproducts such as bagasse and straw, which is considered one of the main waste generated due to the mechanization of the harvest in Brazil. Thus, the availability and composition of sugarcane straw have driven a great effort to develop technologies that provide its effective utilization. This study aim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/04/2011
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15. Drying of orange bagasse in dryer type Flash / Secagem do bagaço de laranja em secador tipo Flash
Na fabricação do suco de laranja concentrado congelado, para cada 100 kg de laranja são produzidos 55 kg de suco simples e os 45 kg restantes são os resíduos do processo constituídos de laranjas descartadas, casca, semente, borra de extração de óleo essencial, polpa lavada, que podem ser denominados, genericamente de "bagaço", material comumente de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2010
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16. RESÍDUOS DE AGROINDÚSTRIAS FAMILIARES: IMPACTOS NA QUALIDADE DA ÁGUA E TRATAMENTO COM TÉCNICAS SIMPLIFICADAS / WASTE OF AGRO-INDUSTRY FAMILY: IMPACT ON WATER QUALITY AND TREATMENT WITH TECHNIQUES SIMPLIFIED
Human activities have altered the environmental quality especially with regard to water sources. The agro-industry activity in small scale may represent a potential pollutant different from those of other agricultural activities, and, therefore, there is the need to search alternatives to minimize its impacts. This work aims to: (a) assess the quality and qu
Publicado em: 2010
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17. Seleção de áreas aptas a disposição de lodo de estações de tratamento de esgoto com fins agrícolas / Selection of areas suitable for the disposal of sludge stations sewage treatment for agriculture
Overcrowding in urban centers has spawned many impacts on the environment, highlighting the waste generated by their activities. To properly allocate these wastes, technologies are developed such as those involved in sewage treatment. However, this form of treatment also generates waste, which must be treated and disposed of properly. The sludge is a byprodu
Publicado em: 2010
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18. Tratamento de efluentes da indústria de processamento de carnes utilizando flotação por ar dissolvido e processos de oxidação avançada
The use of wastewater treatment processes with high efficiency of organic matter removal is considered one of the most important steps to achieve lower pollution loads in meat processing industries. As a primary treatment, dissolved air flotation processes (DAF) using coagulation-flocculation are generally applied. Additionally, the utilization of high effic
Publicado em: 2009
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19. SIMULATION OF THE VERTICAL TRANSPORT OF ZINC, LEAD AND COPPER IN CONTAMINATED SOILS / SIMULAÇÃO DO TRANSPORTE VERTICAL DE ZINCO, CHUMBO E COBRE EM SOLOS CONTAMINADOS
The environmental contamination by metallic trace elements is a problem that is getting worse around the world due to the growth and the technologic development of the humanity. Among the main sources of this kind of contamination are the atmospheric deposition of particles in soils located around industrial complexes and the prolonged and concentrated appli
Publicado em: 2009
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20. Efeitos citotoxicos e genotoxicos no meristema radicular de Allium cepa exposta a agua do Rio Paraiba do Sul - estado de São Paulo - regiões de Tremembe e Aparecida / Citotoxic and genotoxic effects in the root meristem of Allium cepa exposed to the water of the Paraiba do Sul river - São Paulo state - regions of Tremembe and Aparecida
One of the main sources of pollution of fresh water ecosystems refers to the discharge of industrial and urban wastes. Untreated sewage is considered an important cause to the deterioration of water quality in developing countries. Environmental pollutants have caused a decrease in water quality, inducing harmful effects in organisms which are in direct or i
Publicado em: 2009
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21. Effect of secondary air injection on the combustion efficiency of sawdust in a fluidized bed combustor
Agricultural wastes like bagasse, paddy husks, sawdust and groundnut shells can be effectively used as fuels for fluidized bed combustion; otherwise these biomass fuels are difficult to handle due to high moisture and fines content. In the present work the possibility of using sawdust in the fluidized bed combustor, related combustion efficiencies and proble
Brazilian Journal of Chemical Engineering. Publicado em: 2008-03
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22. Caracterização fisico-química de adobe estabilizado com amido de mandioca
Due to the high habitational Brazilian shortage, traditional technologies of earth construction and constructive elements production have been rescue, having the soil as a principal raw material. Between these traditional technologies, there are the adobes, which consist of soil blocks with regional variable size. The soil material is removed, humidified, tr
Publicado em: 2008
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23. Degradation of agricultural solid Wastes by microorganisms isolated from sugarcane bagasse, and its percolated, and of effluents from agri-industry. / Degradação de resíduos sólidos agrícolas por microrganismos isolados de bagaço de cana e seu percolado, e de efluentes de agroindústria.
Brazil occupies a place of prominence in the productive sector, as well as in the exploitation of agricultural waste, from sugar cane. This use is a fairly widespread practice, both for effluents, mainly vinasse, but also for solid residues, such as filter-cake and bagasse from sugar cane. Thus, at the start of the 2005/06 harvest, samples were collected fro
Publicado em: 2008
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24. Environmental impacts and nutrient recycling on pastures grazed by cattle
Grasslands are being replaced by urbanization and more profitable agricultural activities around the world. Producers may be faced with land constraints and need to consider intensification of the remaining grasslands as a means of maintaining overall production on a decreasing land resource. However, intensification of the grazing system is usually associat
Revista Brasileira de Zootecnia. Publicado em: 2007-07