Lime Sludge
Mostrando 13-22 de 22 artigos, teses e dissertações.
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13. Aplicação de lama de cal em solo de floresta de Pinus taeda e seus efeitos sobre a microbiota do solo e biodegradabilidade da serrapilheira / Lime sludge effects on soil microorganisms and on litter biodegradability of Pinus taeda forests
A serrapilheira da floresta de Pinus possui baixa biodegradabilidade, o que acarreta em acúmulo de nutrientes nesta camada superficial, diminuindo a sua disponibilidade no solo. Além disto é observada acidificação do solo destas florestas. Estes fatores diminuem a atividade dos microrganismos no solo e selecionam, por limitação fisiológica, o estabel
Publicado em: 2009
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14. GLASS AND GLASS-CERAMICS WITH HIGH METAL CONCENTRATION OF FROM INDUSTRIAL WASTES / Vidros e vitrocerâmicos com alta concentração de metais obtidos a partir de resíduos industriais
The reuse of industrial waste materials is considered as an important source of raw-materials to be employed at new products. However proper criteria is needed in order to obtain vitreous materials from industrial solid wastes like solid galvanic waste (metallurgical industry) as main raw material. Ajusting the composition silica fine powder (ceramic industr
Publicado em: 2008
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15. Dynamics of potencially toxic metals in soil after sewage sludge application / Dinamica de metais potencialmente toxicos no solo apos aplicação de lodo de esgoto
The present research aims at studying the dynamics of six potentially toxic metals ? Cd, Cr, Cu, Ni, Pb and Zn ? on a clay loam soil, where sewage sludge was incorporated in a single application. The soil under analysis was contained in six fiberglass prototypes (1.2 m high x 1.0 m in diameter); inside each prototype, free-drainage collectors were installed
Publicado em: 2005
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16. Fração orgânica de biossólidos e efeito no estoque de carbono e qualidade da matéria orgânica de um Latossolo cultivado com eucalipto. / Organic fraction of the biosolids and effect on carbon stocks and organic matter quality in an oxisol planted with eucalyptus.
The aim of this work was to characterize the organic fraction decomposition process of the biosolids in soil, correlating to initial organic matter (OM) composition of residue. Another objective was quantify, under field conditions, the effect of alkaline biosolid on Oxisol OM, in a site planted with eucalyptus and after five years of the residue application
Publicado em: 2004
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17. Distribuição e biodisponibilidade do níquel aplicado ao solo como NiCl2 e Biossólido. / Distribution and bioavailability of nickel applied to soil as nicl2 and biossólid.
The role of Nickel in soils under the application of biossolids is still not very well known. The objectives of this study were to investigate the influence of total Nickel and organic carbon content, and soil pH, in the Nickel distribution among soil fractions and the bioavailability of the metal to lettuce. Three incubation pot trials were carried out in g
Publicado em: 2003
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18. Indução de supressividade a Phytophthora nicotianae em mudas de limão cravo com lodo de esgoto. / Suppressiviness induction to phytophthora nicotianae on rangpuor lime with sewage sludge.
Uma alternativa de manejo das doenças de citros causadas por Phytophthora spp. é o uso de matéria orgânica. Com o objetivo de avaliar os efeitos da incorporação de lodo de esgoto ao solo na indução de supressividade a Phytophthora nicotianae Breda de Haan (1896) em plântulas de limão cravo (Citrus lemonia (L.) Osbeck), foram realizados diversos exp
Publicado em: 2002
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19. Utilização de polímeros para condicionamento de lodo de ETE para desidratação em filtro prensa de placas. / Utilization of polymers for the conditioning of the sludge generated at Wastewater Treatment Plants (WTP) for dewatering at filter presses.
This study investigated the utilization of polymers for the conditioning of the sludge generated at Wastewater Treatment Plants (WTP) for dewatering at filter presses, verifying the eventual advantages in comparison with the conditioning with lime and ferric chloride. Specific bibliography was researched, polymer and equipment suppliers were consulted and ex
Publicado em: 1998
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20. Isolation of indigenous enteroviruses from chemically treated and dewatered sludge samples.
Samples of wastewater sludge were examined for infectious enteroviruses before and after they had been chemically conditioned and dewatered. The least virus was recovered from the cake produced by filter pressing of sludge, which had a greatly increased solids content (39 to 45% [wt/vol]) relative to the untreated sludge (4.2 to 6.2% [wt/vol]) and in one pla
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21. Poliovirus retention in soil columns after application of chemical- and polyelectrolyte-conditioned dewatered sludges.
The transport of poliovirus type 1 (strain LSc) was studied in Red Bay sandy loam columns that were treated with chemical- or polyelectrolyte-conditioned dewatered sludges and then leached with natural rainwater under saturated flow conditions. Poliovirus was concentrated in the alum and ferric chloride sludges that were produced following the flocculation o
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22. Molecular Analysis of a Bacterial Chitinolytic Community in an Upland Pasture†
The effects of agricultural-improvement treatments on the chitinolytic activity and diversity of a microbial community were investigated within an upland pasture. The treatments of interest were lime and treated sewage sludge, both commonly applied to pasture land to improve fertility. Burial of chitin-containing litter bags at the field site resulted in enr
American Society for Microbiology.