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Mostrando ítems 11-20 de 4884
Análise do processo de produção da extração de pedras preciosas visando alternativas rentáveis e ambientalmente eficazes
(Universidade Federal de Santa MariaBREngenharia de ProduçãoUFSMPrograma de Pós-Graduação em Engenharia de Produção, 2011-12-07)
The discussions about the issue of correct waste management have been growing in the recent years. In this sense, this study aimed to propose profitable and environmentally effective alternatives, through the analysis of ...
Extraction/adsorption as applied to the dearomatization of white mineral oil
(Institution of Chemical Engineers, 2019-03)
Cyclic adsorption units can be considered as an alternative for the regeneration of the solvent being continuously recycled to extraction units. The concept was studied here with an example of dearomatization of mineral ...
Understanding the acid dissolution of Serpentinites (Tailings and waste rock) for use in indirect mineral carbonation
(2022-04-01)
Solid carbonates can be formed by indirect mineral carbonation using the pH swing method for CO2 storage. It occurs at low temperatures and pressures in four stages: acid dissolution, purification, carbonation, and recovery. ...
Co-crystallization of yerba mate extract (Ilex paraguariensis) and mineral salts within a sucrose matrix
(Elsevier, 2007-05)
Calcium lactate, magnesium sulphate and yerba mate (Ilex paraguariensis) extracts with antioxidants properties were encapsulated by co-crystallization in a supersaturated sucrose solution. Solubility, hygroscopicity, bulk ...
Temporal organic matter content variation on of two volcanic soils under different agricultural managementsVariación temporal del contenido de materia orgánica en dos suelos volcánicos bajo diferentes manejos agrícolas
(Facultad de Ciencias Agrarias. Universidad Austral de Chile, 2014)
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 ...