Metamorphic Limestone
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Biogenic, sedimentary, and metamorphic limestone: a comparative characterization of soil amendment
RESUMO A correção da acidez é fundamental para a atividade agrícola em solos ácidos, assim como a caracterização e estudo do efeito no solo de fontes alternativas de corretivos. Objetivou-se caracterizar os calcários de origem biológica, sedimentar e metamórfica. Os calcários estudados foram: biogênico (CB), sedimentar (CS), comercial (CC) e o m�
Rev. Ceres. Publicado em: 2019-02
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2. Geochemistry and Spatial Variability of Rare Earth Elements in Soils under Different Geological and Climate Patterns of the Brazilian Northeast
ABSTRACT Growth in the agricultural and industrial sectors has increased the demand for rare earth elements (REEs) in the production of technological devices and fertilizers. Thus, the accumulation of these elements in the soil has become an environmental concern. Here, we aim to determine the natural contents of REEs in soils derived from different parent m
Rev. Bras. Ciênc. Solo. Publicado em: 02/07/2018
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3. EVALUATION OF LIMESTONE IMPURITIES IN THE DESULFURIZATION PROCESS OF COAL COMBUSTION GAS
Abstract Limestones have been used to capture SO2 emitted during the combustion of coal for decades. However, due to the complexities of the variables involved in this process, many issues are still being studied. Some tests were performed in a fluidized bed reactor, which was used to evaluate the performance of the limestones in the bed for flue gas desulfu
Braz. J. Chem. Eng.. Publicado em: 2017-01
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4. FBC desulfurization process using coal with low sulfur content, high oxidizing conditions and metamorphic limestones
A metamorphic limestone and a dolomite were employed as SO2 sorbents in the desulfurization of gas from coal combustion. The tests were performed in a fluidized bed reactor on a bench and pilot scale. Several parameters such as bed temperature, sorbent type, and sorbent particle size at different Ca/S molar ratios were analyzed. These parameters were evaluat
Publicado em: 2011
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5. Unidades de paisagem do Distrito Federal, escala 1:100.000.
ABSTRACT: The paper presents the landscape units of Distrito Federal, scale 1:100.000. They were defined 18 units starting from the litho-structural, landforms and soil organization. The metamorphic rocks with psamo-pelitic composition tend to occur in the form of residual leveling surfaces. The pelitic rocks also present residual leveling surfaces, but main
Planaltina. Publicado em: 2011
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6. FBC desulfurization process using coal with low sulfur content, high oxidizing conditions and metamorphic limestones
A metamorphic limestone and a dolomite were employed as SO2 sorbents in the desulfurization of gas from coal combustion. The tests were performed in a fluidized bed reactor on a bench and pilot scale. Several parameters such as bed temperature, sorbent type, and sorbent particle size at different Ca/S molar ratios were analyzed. These parameters were evaluat
Brazilian Journal of Chemical Engineering. Publicado em: 2009-06