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See detailMinéralogie et pétrographie des phosphates de pegmatites brésiliennes, avec un intérêt particulier pour leurs relations avec les silicates
Baijot, Maxime ULg; Hatert, Frédéric ULg; Philippo, Simon

in Abstract book, 26ème Réunion annuelle des collaborateurs scientifiques du Musée d'histoire naturelle du Luxembourg (2009)

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See detailMinéralogie et propriétés physico-chimiques des smectites de Bana et Sabga (Cameroun). Utilisation dans la décoloration d'une huile végétale alimentaire
Mache, Jacques Richard ULg

Doctoral thesis (2013)

In this study, clay samples were collected in the localities of Bana and Sabga, in the regions of the west and north-west Cameroon, respectively. The purpose of this study was to determine their ... [more ▼]

In this study, clay samples were collected in the localities of Bana and Sabga, in the regions of the west and north-west Cameroon, respectively. The purpose of this study was to determine their mineralogical composition, their physico-chemical properties and to assess their potential use in the bleaching process of palm oil, which is the main edible vegetable oil produced and refined in Cameroon. <br /> The results obtained from the analyses (XRD, FTIR, DTA / TGA and SEM) revealed that montmorillonite is the main clay mineral in these materials. It is associated with kaolinite and mica. Non-clay minerals such as quartz, anatase, cristobalite, K-feldspar and heulandite are also identified in variable quantities. Chemical analyses of the major elements show that the clays from Bana and Sabga consist mainly of the follow oxides such as SiO2, Al2O3 and Fe2O3. Bana clays have a cation exchange capacity (CEC) between 50 and 60 meq/100 g and a specific surface area between 50 and 60 m2/ g. Sabga clays have a lower capacity cation exchange (38- 46 meq/100 g) and a wider range of specific surface area (33-90 m2 / g). The characterization of the natural clays allowed to select of one sample by locality for sulfuric acid treatment. <br />The acid treatment of these materials led to structural, morphological and textural changes. Analysis by X-ray diffraction showed a progressive decrease in the intensity of the (001) reflection of montmorillonite and a shift of its basal d001-value. Treatment with more acid concentration causes an increase in the surface area of the obtained products and a decrease in cation exchange capacity. <br />The assessment of the bleaching power of natural and acid-activated Bana clay in palm oil decolorization shows that the activated clay has a high bleaching capacity (~ 87%) compared to the natural clay (~ 55%). palm oil Bleaching by these clay materials does not deteriorate the bleached oil. These materials can thus be used as bleaching earths in the refining oil process. [less ▲]

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See detailMineralogy and petrography of phosphate minerals from pegmatites of the Conselheiro Pena district, Minas Gerais, Brazil
Baijot, Maxime ULg; Hatert, Frédéric ULg; Philippo, Simon

in Acta Mineralogica-Petrographica, Abstract series (2010), 6

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See detailMineralogy and petrography of phosphate minerals from Sapucaia and Boca Rica pegmatites, Minas Gerais, Brazil
Baijot, Maxime ULg; Hatert, Frédéric ULg; Philippo, Simon et al

in Estudios Geologicos (2009), 19(2), 47-51

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See detailMineralogy and physico-chemical properties of alluvial clays from
Nzeugang Nzeukou; Fagel, Nathalie ULg; Njoya, André et al

in Applied Clay Science (2013), 83-84

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See detailMineralogy and physico-chemical properties of alluvial clays from Sanaga valley (Center, Cameroon): Suitability for ceramic application,
Nzeukou, Aubin; Fagel, Nathalie ULg; Njoya, André et al

in Applied Clay Science (2013), (83-84), 238-243

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See detailMinerals discovered in paleolithic black pigments by transmission electron microscopy and micro-X-ray absorption near-edge structure
Chalmin, Emilie; Vignaud; Salomon, Hélène ULg et al

in Applied Physics A : Materials Science & Processing (2006)

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See detailLes minéraux de Belgique
Hatert, Frédéric ULg; Deliens, Michel; Fransolet, André-Mathieu ULg et al

Book - Museum des Sciences Naturelles (2002)

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See detailLes minéraux de la région de Bastogne: observations nouvelles
Hatert, Frédéric ULg

Conference (2000)

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See detailLes minéraux et vitamines chez la vache laitière
Beckers, Yves ULg

Conference given outside the academic context (2002)

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See detailLes minéraux secondaires en relation avec les sulfures de la région de Vielsalm, Belgique
Hatert, Frédéric ULg; Blondieau, Michel; Dehove, José et al

in Bulletin de la Société Royale des Sciences de Liège (1998), 67

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See detailLes mines de diamants de l’Afrique australe
Spring, Walthère ULg

in Annales de la Société Géologique de Belgique (1881), 8

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See detailMines, minières et carrières souterraines en Wallonie - Risques associés et contraintes
Pacyna, Daniel; Denayer, Julien ULg

Conference (2010, November 22)

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See detailminet: A R/Bioconductor package for inferring large transcriptional networks using mutual information
Meyer, Patrick ULg; Lafitte, Frederic; Bontempi, Gianluca

in BMC bioinformatics (2008), 9(1), 461

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See detailLe mineur en droit médical
Nottet, Aurélie ULg

in Genicot, Gilles (Ed.) Nouveaux dialogues en droit médical (2012, October 12)

Detailed reference viewed: 47 (8 ULg)