References of "Lambert, Fanny"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailRecycling-Oriented Characterisation of End-of-Life LED Display Panels
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Poster (2021, June)

Energy savings and environmental considerations have led the European Union to ban inefficient lighting, such as incandescent and halogen bulbs, resulting in a massive adoption of Light-Emitting Diode ... [more ▼]

Energy savings and environmental considerations have led the European Union to ban inefficient lighting, such as incandescent and halogen bulbs, resulting in a massive adoption of Light-Emitting Diode (LED) technology. This shift from conventional lighting to LED lighting observed on a great diversity of application (automotive lighting, television, mobile phones, display panels, etc.) goes hand-in-hand with a more complex design and the need of valuable metals such as Au, Ag, and Cu and critical raw materials (CRM) among which are gallium, indium, and rare earth elements (REEs). That expansion of LED-based products will eventually contribute to a significant amount of specific e-waste that will soon require proper collection strategies and suitable and economic recycling routes yet to be developed. To this end, a detailed and process-oriented characterisation is essential. [less ▲]

Detailed reference viewed: 44 (7 ULiège)
See detailEtude de la réduction du volume de la purge par évaporation (Procédé BioLix)
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2019)

The BioLix process implies periodic bleeding of recycled solutions to avoid the effect of concentration of dissolved elements and to counterbalance the input of washing water into the circuit. These bleed ... [more ▼]

The BioLix process implies periodic bleeding of recycled solutions to avoid the effect of concentration of dissolved elements and to counterbalance the input of washing water into the circuit. These bleed contain metal sulphates of copper, zinc, aluminum, sodium and iron. They require special attention before disposal to comply with environmental standards in force. In this context, it is necessary to extract the sulphates associated with sodium present in the bleed prior their release. Selective crystallization would allow the recycling of these compounds for the BioLix process. In addition, a reduction by evaporation in the volumes of the bleed could allow a reduction in logistics costs. Therefore, the objectives pursued for the study set out in this report are the following: - To determine the activation conditions of the crystallization of sodium sulfate; - To determine the maximum reduction rate of the bleed volume and check the stability of the reduced solutions depending on the storage / transport temperature. [less ▲]

Detailed reference viewed: 36 (5 ULiège)
Full Text
Peer Reviewed
See detailEffects of operational parameters on the bio-assisted leaching of metals from pyrolyzed printed circuit boards
Arinanda, Muhammad ULiege; van Haute, Quentin; Lambert, Fanny ULiege et al

in Minerals Engineering (2019), 134

End-of-life printed circuit boards have been subjected to proprietary pyrolysis resulting in a copper-rich char. This study details their downstream processing by hydrometallurgy for copper recovery. The ... [more ▼]

End-of-life printed circuit boards have been subjected to proprietary pyrolysis resulting in a copper-rich char. This study details their downstream processing by hydrometallurgy for copper recovery. The pyrolysed PCBs were reacted with two different bioleaching solutions containing mixed mesophilic microbial consortia and a synthetic chemical solution for comparative purposes. The influence of char pre-treatment, reactor type, working temperature, and the origin of leaching solution on the dissolution of the zero valent copper was studied. It was found, that the type of reactor had a more pronounced effect than the origin of bacterial solution in bringing copper in solution. Characterisation of the leached char confirmed the importance of the pre-treatment step. Other than ferric iron concentration and temperature, the leaching effciency and kinetics were largely influenced by the bacterial activity. The fact that copper was brought into solution by ferric iron at starting concentrations well below the stoichiometric requirement, implies bacterial regeneration of the ferric iron and its cycling in the system. [less ▲]

Detailed reference viewed: 88 (34 ULiège)
Full Text
Peer Reviewed
See detailEffects of operational parameters on the bio-assisted leaching of metals from pyrolyzed printed circuit boards
Arinanda, Muhammad ULiege; van Haute, Quentin; Lambert, Fanny ULiege et al

in Minerals Engineering (2019), 134

End-of-life printed circuit boards have been subjected to proprietary pyrolysis resulting in a copper-rich char. This study details their downstream processing by hydrometallurgy for copper recovery. The ... [more ▼]

End-of-life printed circuit boards have been subjected to proprietary pyrolysis resulting in a copper-rich char. This study details their downstream processing by hydrometallurgy for copper recovery. The pyrolysed PCBs were reacted with two different bioleaching solutions containing mixed mesophilic microbial consortia and a synthetic chemical solution for comparative purposes. The influence of char pre-treatment, reactor type, working temperature, and the origin of leaching solution on the dissolution of the zero valent copper was studied. It was found, that the type of reactor had a more pronounced effect than the origin of bacterial solution in bringing copper in solution. Characterisation of the leached char confirmed the importance of the pre-treatment step. Other than ferric iron concentration and temperature, the leaching effciency and kinetics were largely influenced by the bacterial activity. The fact that copper was brought into solution by ferric iron at starting concentrations well below the stoichiometric requirement, implies bacterial regeneration of the ferric iron and its cycling in the system. [less ▲]

Detailed reference viewed: 88 (34 ULiège)
See detailEtude de la percolation du résidu fin en vue de sa mise en CET (Procédé BioLix)
Aatach, Mohamed ULiege; Bastin, David ULiege; Lambert, Fanny ULiege

Report (2019)

The BioLix process produces a final fine residue which must be landfilled in accordance with the current standards. At the end of the treatment, potentially mobilizable copper may still be present in the ... [more ▼]

The BioLix process produces a final fine residue which must be landfilled in accordance with the current standards. At the end of the treatment, potentially mobilizable copper may still be present in the fine fraction. However, landfilling in class II technical landfill centers (non-hazardous industrial waste) is only authorized if the copper contained in the produced percolate does not exceed 50 mg per kg of dry matter. In an attempt to meet this condition, various solid / liquid separation methods applied to a pulp of the BioLix type have been considered. More specifically, a study of the percolation of the fine residues obtained was carried out. [less ▲]

Detailed reference viewed: 29 (2 ULiège)
See detailEtude de la neutralisation de la purge par addition de Ca(OH)2 (Procédé BioLix)
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2019)

The BioLix process implies periodic bleeding of recycled solutions to avoid the effect of concentration of dissolved elements and to counterbalance the input of washing water into the circuit. These bleed ... [more ▼]

The BioLix process implies periodic bleeding of recycled solutions to avoid the effect of concentration of dissolved elements and to counterbalance the input of washing water into the circuit. These bleed contain metal sulphates of copper, zinc, aluminum, sodium and iron. The neutralisation by Ca(OH)2 addition to the bleed has been investigated as a way of complying environmental standards in force regarding the disposal of a liquid effluent. [less ▲]

Detailed reference viewed: 32 (4 ULiège)
See detailInfluence de l’ensemencement sur la précipitation du fer et de l’aluminium (Procédé BioLix)
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2018)

This report presents the results and discussions related to pressure oxidation leaching experiments on shredded polymetallic materials (BioLix process) with the aim to evaluate the influence of a seeding ... [more ▼]

This report presents the results and discussions related to pressure oxidation leaching experiments on shredded polymetallic materials (BioLix process) with the aim to evaluate the influence of a seeding on the precipitation of aluminium and iron. [less ▲]

Detailed reference viewed: 35 (5 ULiège)
See detailEffet de la dilution et de l'acidification de la solution de lixiviation sur la génération d'un précipité (Procédé BioLix)
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2018)

This reports presents the results and discussions on the stability of the pregnant leach solution produced through a pressure oxidation leaching (PLS) of polymetallic materials (BioLix Process). The ... [more ▼]

This reports presents the results and discussions on the stability of the pregnant leach solution produced through a pressure oxidation leaching (PLS) of polymetallic materials (BioLix Process). The effects of the dilution and the acidification of the PLS were investigated. [less ▲]

Detailed reference viewed: 28 (3 ULiège)
See detailEtude de l’agitation des réacteurs de lixiviation – détermination de la vitesse terminale de chute d’une particule type (Procédé BioLix)
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2018)

This report is on the determination of the terminal falling velocity of a particule similar to the one treated by the BioLix process both from a theoretical and experimental point of view.

Detailed reference viewed: 43 (11 ULiège)
See detailEpuration des chlorures présents dans les effluents liquides d'un procédé de lixiviation oxydante sous pression de matières polymétalliques
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2018)

This report presents the results and discussions of an investigation on the chloride purification of the liquid effluents produced by the BioLix Process.

Detailed reference viewed: 25 (3 ULiège)
See detailImpurities transfert during the pressure oxidation leaching of polymetallic materials through the BioLix Process
Aatach, Mohamed ULiege; Damm Martin, Gonzalo; Lambert, Fanny ULiege et al

Report (2018)

This report focuses on the transfer of impurities in the pregnant leach solution during the pressure oxidation leaching of polymetallic materials through the BioLix Process (identification, quantification ... [more ▼]

This report focuses on the transfer of impurities in the pregnant leach solution during the pressure oxidation leaching of polymetallic materials through the BioLix Process (identification, quantification, effects of the operating conditions). [less ▲]

Detailed reference viewed: 26 (2 ULiège)
See detailSpéciation de l'or en lixiviation oxydante sous pression de cartes électroniques (Procédé BioLix)
Aatach, Mohamed ULiege; Bastin, David ULiege; Lambert, Fanny ULiege

Report (2018)

This report focuses on the gold speciation related to the printed circuit boards processed by pressure oxidation leaching (BioLix Process).

Detailed reference viewed: 30 (2 ULiège)
See detailSur l'usage des ultrasons et des micro-ondes appliqués aux traitements chimiques
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2017)

This report offers an overview on the ultrasound and microwaves technologies applied to chemical processing (Setup characterization, chemical and physical effects, measurements, etc.).

Detailed reference viewed: 34 (4 ULiège)
See detailCémentation assistée par ultrasons - étude de faisabilité
Aatach, Mohamed ULiege; Bastin, David ULiege; Lambert, Fanny ULiege

Report (2017)

This report presents the results of a feasibility study on the use of ultrasound to alter metal cementation rate using a custom ultrasound setup.

Detailed reference viewed: 24 (6 ULiège)
See detailCaractérisation de panneaux LEDs
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2017)

The NOVA process was specifically developed to pre-treat low-grade Printed Circuit Board (PCB) concentrates. It generates three specific concentrates where the valuables metals are distributed as ... [more ▼]

The NOVA process was specifically developed to pre-treat low-grade Printed Circuit Board (PCB) concentrates. It generates three specific concentrates where the valuables metals are distributed as: - Precious metals (MP) in an electronic components concentrate (Cu and MP concentrate); - Cu in a pure Cu concentrate (i.e. with low leachable metals content) = depopulated PCB; - Sn in a Sn and MP concentrate. The objective of performing such metals separation is double: 1) It enables the recovery of Sn that is currently not valorised by the industrial smelting route; 2) It enables to concentrate the MP in specific outputs allowing a better economical valorisation. The heart of NOVA is the combination of mechanical activation and electrochemistry. The technology has been validated on post-shredding PCB coming from Waste Electrical and Electronic Equipment (WEEE) and End-of-Life (EOL) vehicles provided by Comet Traitements. During this validation at pilot scale, PM concentration factors of 5 and 15, respectively for Ag and Au, were observed. Note that the PM concentration factors are depending on EoL PCB characteristics (PCB design, WEEE category, step of the recycling process which PCB were sampled). The Nova process is currently running at pilot scale TRL7 (15kg/day, upscaling possible). [less ▲]

Detailed reference viewed: 56 (8 ULiège)
See detailUtilisation des ultrasons en hydrométallurgie
Aatach, Mohamed ULiege; Lambert, Fanny ULiege; Bastin, David ULiege

Report (2017)

Literature review on the application of ultrasound in hydrometallurgy.

Detailed reference viewed: 21 (4 ULiège)
Full Text
Peer Reviewed
See detailPossibilities for Co(III) dissolution from an oxidized ore through simultaneous bioleaching of pyrite
Zeka, Leon; Lambert, Fanny ULiege; Frenay, Jean ULiege et al

in Minerals Engineering (2015), 75

Solubilisation of Co(III) from a heterogenite met in copper cobaltiferous oxide ore has been realized through reductive leaching using ferrous iron generated via bio-oxidation of pyrite. Biotic and ... [more ▼]

Solubilisation of Co(III) from a heterogenite met in copper cobaltiferous oxide ore has been realized through reductive leaching using ferrous iron generated via bio-oxidation of pyrite. Biotic and abiotic experiments at various pulp densities and redox potentials have been performed and results compared. Cobalt leaching at elevated redox potential is possible, offering cost reduction benefits due to reduced consumption of ferrous iron. At elevated potential of 625 mV, however, the initial rate of cobalt leaching has been found as 115 mg/(g ore)⋅(24 h), lower than the rate of 865 mg/(g ore)⋅(24 h) registered at 505 mV. Less stochiometric amount of ferrous iron was required when cobalt leaching was coupled to pyrite bioleaching, with 75% of cobalt recovered for 12 h at the optimally found conditions. It could be inferred that the Fe3+–Fe2+ cycle exists and is efficiently maintained through bacterial presence in the studied system. [less ▲]

Detailed reference viewed: 85 (27 ULiège)
Full Text
Peer Reviewed
See detailCopper extraction from coarsely ground printed circuit boards using moderate thermophilic bacteria in a rotating-drum reactor
Rodrigues, Michael; Leão, Versiane; Gomes, Otavio et al

in Waste Management (2015), 41

The current work reports on a new approach for copper bioleaching from Printed Circuit Board (PCB) by moderate thermophiles in a rotating-drum reactor. Initially leaching of PCB was carried out in shake ... [more ▼]

The current work reports on a new approach for copper bioleaching from Printed Circuit Board (PCB) by moderate thermophiles in a rotating-drum reactor. Initially leaching of PCB was carried out in shake flasks to assess the effects of particle size ( 208 lm + 147 lm), ferrous iron concentration (1.25–10.0 g/L) and pH (1.5–2.5) on copper leaching using mesophile and moderate thermophile microorganisms. Only at a relatively low solid content (10.0 g/L) complete copper extraction was achieved from the particle size investigated. Conversely, high copper extractions were possible from coarse-ground PCB (20 mm-long) working with increased solids concentration (up to 25.0 g/L). Because there was as the faster leaching kinetics at 50 C Sulfobacillus thermosulfidooxidans was selected for experiments in a rotating-drum reactor with the coarser-sized PCB sheets. Under optimal conditions, copper extraction reached 85%, in 8 days and microscopic observations by SEM–EDS of the on nonleached and leached material suggested that metal dissolution from the internal layers was restricted by the fact that metal surface was not entirely available and accessible for the solution in the case of the 20 mm-size sheets. [less ▲]

Detailed reference viewed: 102 (37 ULiège)
Full Text
Peer Reviewed
See detailCOPPER LEACHING FROM WASTE ELECTRIC CABLES BY BIOHYDROMETALLURGY
Lambert, Fanny ULiege; Bastin, David ULiege; Gaydardzhiev, Stoyan ULiege 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 ▲]

Detailed reference viewed: 164 (59 ULiège)
Full Text
Peer Reviewed
See detailCopper recovery from waste electric cables by biohydrometallurgy
Lambert, Fanny ULiege; Bastin, David ULiege

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 ▲]

Detailed reference viewed: 86 (18 ULiège)