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Mineralization of formic acid from catalytic nitrate reduction effluent by UV-based and electrochemical processes
(Elsevier, 2020-10)
In this work, UV-based and electrochemical processes were proposed for formic acid (FA) mineralization, from an effluent generated on the nitrate catalytic reduction reaction. The results show that although direct photolysis ...
Using the cumulative availability curve to assess the threat of mineral depletion: The case of lithium
(ELSEVIER SCI LTD, 2009)
The cumulative availability curve shows the quantities of a mineral commodity that can be recovered under current conditions from existing resources at various prices. The future availability of a mineral commodity depends ...
Uma revisão dos princípios de funcionamento e métodos de dimensionamento de moinhos de bolas
(Universidade Federal de Minas GeraisUFMG, 2012-07-16)
Comminution is one of the most important stages of the mineral processing, since the breakage of particles makes possible: - the attainment of a product with the market particle size specifications; - the preparation of ...
Processamento e análise digital de imagens aplicados aos estudos de liberação mineral
(Universidade Federal de Minas GeraisUFMG, 2010-02-22)
The present work is focused in the development of a digital image processing and analysis system, the LibMin, idealized for performing mineral liberation analysis. The system allows analyzing a large number of mineral ...
Produção de composto orgânico a partir de residuos de plantas medicinais
(2003-04-01)
Extraction of active principles from medicinal plants generates wastes usually discharged. This process does not extract minerals from plant tissues, which may be considered of great value in organic composting. Wastes of ...
The Importance of the mineral coal in the developmentLa importancia del carbón mineral en el desarrollo
(Universidad Nacional Mayor de San Marcos, Facultad de Ingeniería Geológica, Minera, Metalúrgica y Geográfica, 2006)