Diluted Aqueous Systems
Mostrando 1-8 de 8 artigos, teses e dissertações.
-
1. Evolução quimica e isotopica dos fluidos associados a mineralização de Fe-Cu-Au do deposito Alvo 118, provincia mineral de Carajas - PA / Chemical and isotopic evolution of the fluids from the Alvo 118 Fe-Cu-Au do deposit, Carajas mineral province (PA)
The Alvo 118 iron oxide-copper-gold (IOCG) deposit (170 Mt @ 1,0 wt% Cu, 0,3 g/t Au), together with the world-class Sossego and Cristalino deposits, lie in the southern sector of the Carajas Mineral Province (CMP) along a steeply-dipping, WNW-ESE-striking, 60 km-long shear zone, close to the contact of the Itacaiunas Supergroup metavolcano-sedimentary sequen
Publicado em: 2009
-
2. Uma contribuiÃÃo ao estudo da sedimentaÃÃo gravitacional em batelada
Thickeners are equipments that uses the gravitational force as separating agent of suspended solid particle in liquid chains of industrial processes. The frequent use of the settlers in chemical industries is the reason of the interest on the development of studies on the subject. The batch sedimentation is the starting point for the project of continuous in
Publicado em: 2007
-
3. Determinação experimental da solubilidade de orgânicos em água
Dados de solubilidade de orgânicos em água são de extrema importância para o desenvolvimento da indústria química. O projeto de equipamentos, geralmente, requer a utilização de dados experimentais confiáveis. Este trabalho de pesquisa tem como objetivo, o desenvolvimento de uma metodologia para a determinação de dados isotérmicos de solubilidade
Publicado em: 2006
-
4. Using pervaporation data in the calculation of vapour permeation hollow-fibre modules for aroma recovery
Taking into account the close similarity between pervaporation and vapour permeation techniques, a method for employing pervaporation flux data in the modelling of vapour permeation modules is proposed. It is based on the use of fugacity gradients across the membrane, instead of concentration ones, as the driving force for mass transfer. This procedure is in
Brazilian Journal of Chemical Engineering. Publicado em: 2004-12
-
5. Estudo das interações entre biopolimeros e polpas de frutas tropicais em cisalhamento estacionario e oscilatorio
The rheological behavior of guar and xanthan gums in passion tfuit pulp was evaluated by means of shear flow and oscillatory shear tests. Herschel-Bulckley model represented successfully biopolymers flow behavior and Cross model was used to describe those behaviors in a broad shear stress range. In pulp tfuit systems, xanthan gum showed more pseudoplasticity
Publicado em: 2002
-
6. Estudo de fermentação alcoolica por celulas de Saccharomyces cerevisiae imobilizadas em Crisotila
Chrysotile is a constituted mineral of silicate of magnesium of fibrous abundant in Brazil and it can be used as mineral support for yeast cells in continuous fermentation for ethanol production with immobilizedcells, which don t move fteely in the aqueous phase of the reactor, contributing to elevate its cellular density that promotes the speed increase of
Publicado em: 2001
-
7. Determinação de dados de equilíbrio de fases para sistemas aquosos com eletrólitos
In the present work are established initially the fundamental relationships of thermodynamics that govern the equilibrium between phases, the models used for the description of the behavior non ideal of the liquid and vapor phases in conditions of low pressures. This work seeks the determination of vapor-liquid equilibrium (VLE) data for a series of multicom
Publicado em: 1999
-
8. Effect of Motility on Surface Colonization and Reproductive Success of Pseudomonas fluorescens in Dual-Dilution Continuous Culture and Batch Culture Systems
The colonization of glass surfaces by motile and nonmotile strains of Pseudomonas fluorescens was evaluated by using dual-dilution continuous culture (DDCC), competitive and noncompetitive attachment assays, and continuous-flow slide culture. Both strains possessed identical growth rates whether in the attached or planktonic state. Results of attachment assa