Soil Water Desorption
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Functionalized Charcoal as a Buffering Matrix of Copper and Zinc Availability
ABSTRACT: High copper (Cu) and zinc (Zn) contents in soil can cause phytotoxicity to plants and contaminate surface and groundwater, with negative effects on agriculture and the environment. Functionalized charcoal (OCh) has high cation exchange capacity (CEC) and the ability to adsorb Cu and Zn and control their availability in the soil and water. An adsorp
Rev. Bras. Ciênc. Solo. Publicado em: 14/11/2018
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2. ISOSTERIC HEAT, ENTROPY, AND GIBBS FREE ENERGY OF PUMPKIN SEEDS (Cucurbita moschata)
ABSTRACT To maintain seed and soil quality of pumpkin, energy knowledge associated with processing and storage stages is strategic for the optimization of the thermodynamic processes needed for product stabilization. Thus, the objective of this study was to determine isosteric heat, differential entropy, and Gibbs free energy within a temperature range from
Eng. Agríc.. Publicado em: 2018-01
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3. Adsorption, immobilization and activity of cellulase in soil: the impacts of maize straw and its humification
The present work aimed to study some aspects of sorption and immobilization of cellulase molecules on soil components by the analysis of the reactions of cellulase in a soil treated with different levels of maize residue and incubated for 90 days. The analysis of variance showed that the effects of the treatments of maize straw, incubation time and their int
Braz. arch. biol. technol.. Publicado em: 08/11/2013
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4. Spatial Variability of Some Soil Physical Properties in Three Soils of Sao Paulo, Brazil.
Volumetric core samples and loose soil samples were collected at 1 m interval in 10 m long transects, on three major soil groups in São Paulo, Brazil. The soil cores were used for soil desorption curves and the bulk density, and the loose soil was used for particle size analysis. The parameters obtained from the soil water retention model, bulk density and
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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5. Sorption/desorption and leaching of the herbicide ametryne in soils cultivated with sugar cane and amended with sewage sludge / Sorção/dessorção e lixiviação do herbicida ametrina em solos canavieiros tratados com lodo de esgoto
Several studies have shown the benefits of applying sewage sludge on the physical and chemical properties of the soils. However, just a few of them evaluates the impact of this practice on the behavior of pesticides in tropical soils. The main goal of this research was to evaluate the effects of applying different sources of sewage sludge (Ribeirão Preto, F
Publicado em: 2007
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6. Impact of use and management on the organic matter fractions of latosols from the Rio das Mortes Basin. / Impacto de uso e manejo em fraÃÃes da matÃria orgÃnica de latossolos da Bacia do Rio das Mortes - MG
Rio das Mortes basin is an important area of coffee and potato production in Minas Gerais state (Brazil). In these crops, it is frequent the application of lime and phosphorus, as well as the use of practices of intensive revolving of soil, especially in potato croplands. Although these management practices are important for agricultural process, they affect
Publicado em: 2007
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7. Virus movement in soil columns flooded with secondary sewage effluent.
Secondary sewage effluent containing about 3 X 10(4) plaque-forming units of polio virus type 1 (LSc) per ml was passed through columns 250 cm in length packed with calcareous sand from an area in the Salt River bed used for ground-water recharge of secondary sewage effluent. Viruses were not detected in 1-ml samples extracted from the columns below the 160-
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8. Poliovirus removal from primary and secondary sewage effluent by soil filtration.
Adsorption of poliovirus from primary sewage effluent was similar to that from secondary sewage effluent in both batch soil studies and experiments with soil columns 240 cm long. Virus desorption by distilled water was also similar in a soil column that had been flooded with either primary or secondary effluent seeded with virus. These results indicated that
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9. Microbial degradation of acenaphthene and naphthalene under denitrification conditions in soil-water systems.
This study examined the microbial degradation of acenaphthene and naphthalene under denitrification conditions at soil-to-water ratios of 1:25 and 1:50 with soil containing approximately 10(5) denitrifying organisms per g of soil. Under nitrate-excess conditions, both acenaphthene and naphthalene were degraded from initial aqueous-phase concentrations of abo
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10. Effects of Ammonium and Non-Ammonium Salt Additions on Methane Oxidation by Methylosinus trichosporium OB3b and Maine Forest Soils†
Additions of ammonium and non-ammonium salts inhibit atmospheric methane consumption by soil at salt concentrations that do not significantly affect the soil water potential. The response of soils to non-ammonium salts has previously raised questions about the mechanism of ammonium inhibition. Results presented here show that inhibition of methane consumptio
American Society for Microbiology.
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11. Effect of inoculant strain and organic matter content on kinetics of 2,4-dichlorophenoxyacetic acid degradation in soil.
We monitored rates of degradation of soluble and sorbed 2,4-dichlorophenoxyacetic acid (2,4-D) in low-organic-matter soil at field capacity amended with 1, 10, or 100 micrograms of 2,4-D per g of wet soil and inoculated with one of two bacterial strains (MI and 155) with similar maximum growth rates (mu max) but significantly different half-saturation growth
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12. Low-Concentration Kinetics of Atmospheric CH4 Oxidation in Soil and Mechanism of NH4+ Inhibition
NH4+ inhibition kinetics for CH4 oxidation were examined at near-atmospheric CH4 concentrations in three upland forest soils. Whether NH4+-independent salt effects could be neutralized by adding nonammoniacal salts to control samples in lieu of deionized water was also investigated. Because the levels of exchangeable endogenous NH4+ were very low in the thre
American Society for Microbiology.