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Peer Reviewed
See detailThe copper flora of Katanga: a phytogeographical analysis
Leteinturier, B.; Malaisse, François ULg

in Geo-Eco-Trop (2000), 23(1-4),

Detailed reference viewed: 18 (4 ULg)
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See detailCOPPER LEACHING FROM WASTE ELECTRIC CABLES BY BIOHYDROMETALLURGY
Lambert, Fanny ULg; Bastin, David ULg; Gaydardzhiev, Stoyan ULg et al

in Minerals Engineering (2015)

This study examines the leaching of copper from waste electric cables by chemical leaching and leaching catalysed by Acidithiobacillus ferrooxidans in terms of leaching kinetics and reagents consumption ... [more ▼]

This study examines the leaching of copper from waste electric cables by chemical leaching and leaching catalysed by Acidithiobacillus ferrooxidans in terms of leaching kinetics and reagents consumption. Operational parameters such as the nature of the oxidant (Fe3+, O2), the initial ferric iron concentration (0-10 g/L) and the temperature (21-50°C) were identified to have an important influence on the degree of copper solubilisation. At optimal process conditions, copper extraction above 90% was achieved in both leaching systems, with a leaching duration of 1 day. The bacterial leaching system slightly outperformed the chemical one but the positive effect of regeneration of Fe3+ was limited. It appears that the Fe2+ bio-oxidation is not sufficiently optimised. Best results in terms of copper solubilisation kinetics were obtained for the abiotic test at 50°C and for the biotic test at 35°C. Moreover, the study showed that in same operating conditions, a lower acid consumption was recorded for the biotic test than for the abiotic test. [less ▲]

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See detailCopper phthalocyanine blue pigments in conservation
Defeyt, Catherine ULg

Doctoral thesis (2013)

The phthalocyanine family, and more specifically the copper phthalocyanines (CuPcs) are the most important blue and green artists’ pigments from the end of the 20th century. This thesis focuses on the ... [more ▼]

The phthalocyanine family, and more specifically the copper phthalocyanines (CuPcs) are the most important blue and green artists’ pigments from the end of the 20th century. This thesis focuses on the CuPc blue pigments used in the artists’ paint formulations. CuPc blue extensive use as modern artists’ pigment and its implications in conservation science are pointed out. Their discovery, chemical composition, molecular structure and general properties are also reviewed. Additionally, the polymorphism and the influence of the crystal form on the final properties of the phthalo blue pigments are discussed. A methodology using non-destructive techniques and statistical analysis is then presented. This new procedure allows the identification of the CuPc crystal form in paint layers and is suitable for artwork analysis. Some CuPc polymorphs are prone to crystallization defects in presence of aromatic solvents, leading to a reduction of color strength and a shift in hue. Crystallization resistance of the CuPc polymorphs has then been assessed by means of crystallization tests performed on dry pigments and on paint films. Case studies are then presented. La famille Soler by Picasso has been studied by imaging and non-invasive analytical techniques. The successive underlying compositions have been revealed and the pigments used for the different compositions have been characterized. Then micro-samples taken from Delvaux’s paintings and Francis and Lichtenstein’s studio paints have been analyzed to characterize the blue pigments preferred by these artists. The crystal form of the phthalo blue pigments identified from four micro-samples taken from two Léger and Pechstein fake paintings have been investigated as well. Finally, the historic phthalo blue samples from the Getty Conservation Institute Reference Collection have been studied. [less ▲]

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See detailCopper recovery from waste electric cables by biohydrometallurgy
Lambert, Fanny ULg; Bastin, David ULg

Conference (2014, June 13)

This study examines the leaching of copper from waste electric cables by chemical leaching and leaching catalysed by Acidithiobacillus ferrooxidans in terms of leaching kinetics and reagents consumption ... [more ▼]

This study examines the leaching of copper from waste electric cables by chemical leaching and leaching catalysed by Acidithiobacillus ferrooxidans in terms of leaching kinetics and reagents consumption. Operational parameters such as the nature of the oxidant (Fe3+, O2), the initial ferric iron concentration (0-10 g/L) and the temperature (21-50°C) were identified to have an important influence on the degree of copper solubilisation. At optimal process conditions, copper extraction above 90% was achieved in both leaching systems, with a leaching duration of 1 day. The bacterial leaching system slightly outperformed the chemical one but the positive effect of regeneration of Fe3+ was limited. It appears that the Fe2+ bio-oxidation is not sufficiently optimised. Best results in terms of copper solubilisation kinetics were obtained for the abiotic test at 50°C and for the biotic test at 35°C. Moreover, the study showed that in same operating conditions, a lower acid consumption was recorded for the biotic test than for the abiotic test. [less ▲]

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See detailCopper tolerance and accumulation in two cuprophytes of South Central Africa: Crepidorhopalon perennis and C. tenuis (Linderniaceae)
Faucon, Michel-Pierre; Chipeng, François; Verbruggen, Nathalie et al

in Environmental & Experimental Botany (2012)

Detailed reference viewed: 19 (2 ULg)
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See detailCopper tolerance in the cuprophyte Haumaniastrum katangense (S. Moore) P.A. Duvign. & Plancke
Chipeng, François; Hermans, Christian; Colinet, Gilles ULg et al

in Plant and Soil (2010), 328(1-2), 235-244

Detailed reference viewed: 61 (6 ULg)
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See detailCopper whisker growth from inside sulfur-doped YBa2Cu307-X pellets
Cloots, Rudi ULg; Krekels, T.; Warin, R. et al

in Journal of Solid State Chemistry (1995), 117(1), 151-156

We report on the growth of Cu whiskers (10 mu m in linear transverse size) at the surface of a YBCO pellet, in a sulfur-rich atmosphere at a high synthesis temperature. Growth arises from inside the ... [more ▼]

We report on the growth of Cu whiskers (10 mu m in linear transverse size) at the surface of a YBCO pellet, in a sulfur-rich atmosphere at a high synthesis temperature. Growth arises from inside the pellet since there is no Cu in the surrounding atmosphere. We present the experimental conditions and electron microscopic observations. We briefly propose a mechanism based on chemical considerations, in particular, a Cu reductive nucleation of the CuS phase at the surface of YBCO. Natural phenomena, laboratory findings, and computer simulation work (based on an Eden model) support this interpretation. [less ▲]

Detailed reference viewed: 31 (0 ULg)
See detailCopper-Cobalt Flora Report, Oxide Project Tenke Fungurume Mining,
Lebrun, Julie ULg; Seleck, Maxime ULg; Ilunga wa Ilunga, Edouard et al

Report (2012)

Baseline study, impact assessment and management measures for copper-cobalt habitat

Detailed reference viewed: 28 (3 ULg)
See detailCopperflora.org - website
Boisson, Sylvain ULg; Lebrun, Julie ULg; Seleck, Maxime ULg et al

Textual, factual or bibliographical database (2012)

This website is intended as a place of exchange for scientists and mine managers interested in the conservation, the restoration and the taxonomy of the copper-cobalt flora.

Detailed reference viewed: 47 (12 ULg)
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See detailCoproduction of fengycin and iturin, surfactn or mycosubtilin lipopeptides from Bacillus subtilis
Hbid, C.; Jacques, Philippe ULg; Razafindralambo, Hary ULg et al

in Archives of Physiology & Biochemistry (1995), 103

Detailed reference viewed: 14 (3 ULg)
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See detailCoproperty and construction of dwellings
Kohl, Benoît ULg

Conference (2012)

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See detailLa copropriété d'immeubles ou de groupe d'immeubles bâtis : un tour d'horizon de la réforme
Salvé, Arianne ULg

in Revue de la Faculté de Droit de l'Université de Liège (2009), 2009/4

La Chambre des représentants a donné son feu vert à la modification des dispositions légales relatives à la copropriété (d’immeubles ou de groupes d’immeubles bâtis). La Commission Justice de la Chambre a ... [more ▼]

La Chambre des représentants a donné son feu vert à la modification des dispositions légales relatives à la copropriété (d’immeubles ou de groupes d’immeubles bâtis). La Commission Justice de la Chambre a eu à cœur de simplifier et d’accroître la transparence dans la gestion des copropriétés par rapport au prescrit légal de la loi du 30 juin 1994. Entre-temps, le Sénat a utilisé son droit d’évocation du projet de loi voté à la Chambre. Un sommaire du projet de réforme. (Lge 25/11/2009) [less ▲]

Detailed reference viewed: 79 (46 ULg)
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See detailLa copropriété d'immeubles ou de groupe d'immeubles bâtis : un tour d'horizon de la réforme
Salvé, Arianne ULg

in Tijdschrift voor Appartements- en Immorecht = Revue Copropriété et Droit Immobilier (2009), (4), 8-16

La Chambre des représentants a donné son feu vert à la modification des dispositions légales relatives à la copropriété (d’immeubles ou de groupes d’immeubles bâtis). La Commission Justice de la Chambre a ... [more ▼]

La Chambre des représentants a donné son feu vert à la modification des dispositions légales relatives à la copropriété (d’immeubles ou de groupes d’immeubles bâtis). La Commission Justice de la Chambre a eu à cœur de simplifier et d’accroître la transparence dans la gestion des copropriétés par rapport au prescrit légal de la loi du 30 juin 1994. Entre-temps, le Sénat a utilisé son droit d’évocation du projet de loi voté à la Chambre. Un sommaire du projet de réforme. (Lge 25/11/2009) [less ▲]

Detailed reference viewed: 73 (34 ULg)
See detailCopropriété des immeubles et groupes d'immeubles bâtis
Hansenne, Jacques; Hallet, Georges; Martiny, Joseph et al

in Chroniques de droit à l'usage du notariat (1996, October)

Detailed reference viewed: 18 (12 ULg)
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See detailCopropriété et arbitrage
Caprasse, Olivier ULg

in Revue Générale de Droit Civil Belge = Tijdschrift voor Belgisch Burgerlijk (2005)

Detailed reference viewed: 49 (25 ULg)
See detailCopropriété et loi Breyne
Lecocq, Pascale ULg

Scientific conference (2000)

Detailed reference viewed: 1 (0 ULg)
See detailCopropriété et loi Breyne
Lecocq, Pascale ULg

Scientific conference (2000)

Detailed reference viewed: 9 (3 ULg)
See detailCopropriété et servitude
Boufflette, Sophie ULg

Scientific conference (2012, March 10)

Detailed reference viewed: 28 (14 ULg)
See detailCopropriété et servitudes
Lecocq, Pascale ULg

Scientific conference (2003)

Detailed reference viewed: 1 (0 ULg)
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See detailCopropriété et voisinage
Lecocq, Pascale ULg; Boufflette, Sophie ULg

in Lecocq, Pascale; Dambre, Maarten (Eds.) Chronique de droit à l'usage des juges de paix et de police 2012 (2012)

Detailed reference viewed: 82 (38 ULg)