Water Reused
Mostrando 13-24 de 45 artigos, teses e dissertações.
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13. Optimization of Process Variables in the Synthesis of Isoamyl Isovalerate Using Sulfonated Organic Heteropolyacid Salts as Catalysts
Based on single factor experiments, a three level, four variable central composite designs were carried out to establish a quadratic regression model for the catalytic synthesis of isoamyl isovalerate over sulfonated organic heteropolyacid salts as a function of molar ratio of alcohol to acid, reaction time, the amount of water-carrying agent and the amount
J. Braz. Chem. Soc.. Publicado em: 2015-03
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14. Cultivo integrado de juvenis de TilÃpia do Nilo (Oreochromis niloticus) com a microalga Spirulina platensis: uma alternativa para tratamento de efluente aquÃcola / Culture integrated youth of nile tilapia (Oreochromis niloticus) with microalgae Spirulina platensis: an alternative for treatment of aquaculture effluent
The environmental potential impacts from intensive aquaculture have increased public concern about the sustainability of the activity itself. The present work aimed to evaluate the zootÃcincos parameters of Nile tilapia , water quality, algal biomass production and rate of nitrogen removal compounds by Spirulina platensis realize an integrated cultivation o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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15. Biossorventes â biomassa de aguapà e esferas de alginato/goma do cajueiro â para adsorÃÃo de azul de metileno. / BIOSORBENTS - WATER HYACINTH BIOMASS AND SPHERES ALGINATE / CASHEW GUM - FOR ADSORPTION OF METHYLENE BLUE
In this work was carried out an extensive investigation of the adsorption properties of synthetic dyes on different parts (rhizome, root, stolon and petiole) of Eichhornia crassipes (water hyacinth) and a comparison with the adsorption capacity of the biopolymer alginate beads doped with water hyacinth biomass. The biomasses and spheres were structurally cha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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16. Nitrogen removal from swine wastewater by combining treated effluent with raw manure
Effluents from swine raising can be harmful to the environment if not correctly managed. Nitrogen (N) is usually the main element present at high concentrations in the effluent. Since the use as biofertilizer is not always a feasible alternative, the treatment of swine wastewater is necessary. Variations in N species and water solubility make the treatment d
Sci. agric. (Piracicaba, Braz.). Publicado em: 2012-12
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17. Adsorção de corantes têxteis utilizando biossorventes alternativos
The textile effluents when launched into water bodies reduce the penetration of sun light harming the photosynthesis processes. Besides this, the dyes have been pointed out as potentially toxic substances. In general, the removal processes are based on physicochemical systems followed by biological treatment. The sorption process, besides presenting high rem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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18. O reuso da água : uma solução sustentável para a Amazônia
A tendência de aumento do custo da água e o grande custo do tratamento dos efluentes devido às novas restrições de descarte no meio ambiente têm induzido a necessidade de minimizar o consumo e favorecer o desenvolvimento de novas metodologias para a otimização desse recurso natural. Este estudo apresenta o cenário dos recursos hídricos no mundo e n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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19. Selecting appropriate bedding to reduce locomotion problems in broilers
Two experiments were carried out at the Poultry Sector of the School of Agrarian Sciences of the Federal University of Grande Dourados to evaluate the incidence of leg problems in broilers reared on two distinct types of bedding material: rice husks or wood shavings, both new and reused. In both trials, a randomized experimental design was applied in factori
Revista Brasileira de Ciência Avícola. Publicado em: 2010-09
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20. Removal of helminth eggs in sewage side, through rapid sand filters, anthracite coal and zeolite for agricultural reuse and urban non-potable. / Remoção de ovos de helmintos de esgotos secundários, por meio de filtros rápidos de areia, carvão antracitoso e zeólito para reúso agrícola e urbano não potável.
Helminth eggs are one of the major problems regarding the reuse of treated sewage in agriculture and non-potable urban irrigation since both workers who handle the effluent and the consumer population might become contaminated. Helminth eggs are not efficiently removed by conventional unit operations and processes, which do not allow the removal of helminth
Publicado em: 2010
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21. UTILIZAÇÃO DE HUMINA COMO UM MATERIAL ALTERNATIVO NA ADSORÇÃO/DESSORÇÃO DE CORANTES REATIVOS / HUMIN USE AS AN ALTERNATIVE MATERIAL IN ADSORPTION / DESORPTION OF REACTIVE DYES
Environmental problems have become increasingly acute and frequent in recent decades, mainly due to unrestrained population growth and increased industrial activity. The textile industry merits especial attention in this context, since large volumes of water are used in finishing processes, which results in substantial quantities of liquid effluent. The obje
Publicado em: 2010
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22. Utilização de microemulsão na remoção da cor de efluentes têxteis contendo corantes dispersos
Fibras de poliéster são as fibras sintéticas mais utilizadas no mundo e corantes dispersos são empregados para o tingimento destas fibras. Depois do tingimento, o banho colorido é descarregado no efluente, que precisa de um tratamento especial para remoção de cor. A interação de tensoativos com corantes foi estudada em diversas pesquisas inclusive n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/07/2009
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23. Study of reuse and recycling of rapid filter backwash water from water treatment plant in independent close cycle system / Estudo de reuso e reciclagem de agua de lavagem de filtro rapido de estação de tratamento de agua, em sistema de ciclo fechado, independente
The project was developed with the aim of studying the treatment and the reuse of rapid filter backwash water for recycling in this role, within a closed cycle, under system independent of production activities of a water treatment plant. The system was assembled with a polymer blending unit, a gravel preliminary upflow filter and a dual layer filter(F3), si
Publicado em: 2009
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24. ANÁLISE QUÍMICA DO LIXIVIADO DA ÁGUA DE XISTO EM UM LATOSSOLO VERMELHO ESCURO DISTRÓFICO
Industrial processes generate a series of products, often without applicability becomes waste that contribute to pollution of soil, air and water. Some products may be reused and / or processed into raw materials for other processes. In this context, analyzed the water of oil shale (a byproduct of the process of obtaining the oil shale) using an Instrumental
Publicado em: 2009