References of "Pirard, Eric"
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See detailMatières Premières Critiques : Quelles pistes pour réduire notre dépendance ?
Pirard, Eric ULiege

Conference (2018, June 20)

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See detailRemote Sensing and Mineral Resources
Pirard, Eric ULiege

Conference (2018, June 11)

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See detailThe role of microscopy in the Circular Economy
Pirard, Eric ULiege; Bouzahzah, Hassan ULiege; Castroviejo, Ricardo et al

Scientific conference (2018, May 16)

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See detailL’approvisionnement en métaux critiques: Importance, stratégies et impact
Pirard, Eric ULiege

Conference given outside the academic context (2018)

De l’Âge de la Pierre à l’Âge du Lithium, nous n’avons eu de cesse d’exploiter les ressources naturelles et de perfectionner nos outils. Baignant dans une abondance de technologies, nous ne nous soucions ... [more ▼]

De l’Âge de la Pierre à l’Âge du Lithium, nous n’avons eu de cesse d’exploiter les ressources naturelles et de perfectionner nos outils. Baignant dans une abondance de technologies, nous ne nous soucions plus guère des matières premières qui les rendent possibles et ignorons souvent que leur production est aux mains d’économies émergentes. Depuis 2010, avec son « Initiative Matières Premières », l’Europe se préoccupe de sa situation de forte dépendance vis-à-vis de l’approvisionnement en métaux. Entre les métaux de base et les métaux précieux sont tout d’un coup apparus des métaux qualifiés de « critiques » ( à ne pas confondre avec les Terres Rares ). La criticité est une notion multiple qui possède au moins trois dimensions : géologique, technologique et géopolitique. En prenant l’exemple de quelques métaux emblématiques, l’orateur mettra en évidence les causes d’une possible criticité. Puis, il s’interrogera sur les stratégies possibles pour mitiger notre dépendance et montrera que, tout compte fait, la criticité n’est sans doute pas là où l’on s’y attend le plus ! Enfin, il décrira de qui est fait à ce sujet en Région Wallonne, avec d’importants programmes d’innovation technologique qui associent universités, centres de recherche et entreprises, et permettent à ces acteurs de se positionner au cœur des réseaux européens sur l’économie circulaire des métaux. [less ▲]

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See detailRawMatCop: Developing Skills at the intersection between Earth observation and the raw materials community
Louis, Andreani; Ibrahim, Elsy ULiege; Marzan, Ignacio et al

Poster (2018, April 19)

The RawMatCop programme was launched in 2017 and aims to develop skills, expertise, demonstrations, and applications of Copernicus data to the raw materials sector. It is co-funded by the European ... [more ▼]

The RawMatCop programme was launched in 2017 and aims to develop skills, expertise, demonstrations, and applications of Copernicus data to the raw materials sector. It is co-funded by the European Commission (DG for Internal Market, Industry, Entrepreneurship and SMEs) and the EIT RawMaterials (RawMaterials Academy). Raw materials have become increasingly important to the European Union's economy, growth, and competitiveness. In this context, the EU aims to facilitate the exchange of best practices among its member states to improve the sustainable and safe supply of raw materials to the EU economy and society. Thus, monitoring of mining activities and environmental impact of waste and residue management are key issues of that strategy. With state-of-the-art spaceborne imagery, Copernicus has a strong potential in contributing to EU’s requirements and expectations. The aim of RawMatCop is to illustrate the usefulness of Copernicus data through three 'Research & Application Areas’ relevant for the raw materials sector: (1) multi-scale and multi-source exploration, (2) spatiotemporal mapping of dust dispersion around mining sites, (3) monitoring of surface/subsurface deformation. Multispectral data proves to be an incredible tool for regional scale mapping of surface alterations associated to mineralization or mining activities. One clear advantage of Sentinel-2 data over other sensors is that it has a good coverage of the visible and near infrared portion of the electromagnetic spectrum, which makes it an ideal tool for mapping iron-oxides. The current activities of RawMatCop include mapping alterations and iron features associated to Volcanic Hosted Massive Sulfides (Iberian Pyrite Belt, Spain) as well as mapping the weathering of lateritic profiles and iron-oxide associated to active mining in New Caledonia. For this purpose, several workflows based on downscaling from satellite-based to in-situ observations are being tested. Furthermore, RawMatCorp is also contributing to the consistency assessment of popular atmospheric correction approaches used for Sentinel-2 processing (iCOR, Sen2Cor, MAJA) and the influence of the mining setting on their performance. Moreover, ground deformation is one of the most important hazards related to mining activities, and RawMatCorp is also addressing this topic through monitoring the Riotinto mine (SW Spain). This monitoring utilizes SAR and passive seismic techniques to develop a joint Early Warning System aiming to reduce risks on ground mechanical integrity. [less ▲]

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See detailNon-ferrous scrap metals classification by hyperspectral and multi-energy X-ray transmission imaging
Barnabé, Pierre ULiege; Braibant, Lorraine ULiege; Dislaire, Godefroid ULiege et al

in 8th Sensor-Based Sorting and Control, proceedings (2018, March 06)

Aim: Sort non-ferrous alloys into higher-value purified streams. Method: Visible and near-infrared (VNIR) and X-ray transmission (XRT) hyperspectral imaging are combined to optimize the classification of ... [more ▼]

Aim: Sort non-ferrous alloys into higher-value purified streams. Method: Visible and near-infrared (VNIR) and X-ray transmission (XRT) hyperspectral imaging are combined to optimize the classification of selected alloy scrap metals into five alloy classes of interest. Results: The utilization of the XRT sensor improves the discrimination between heavy and light metal alloys. Therefore, it significantly increases the efficiency of the classification of all classes at the pixel’s and fragment’s level. [less ▲]

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See detailMapping mineral chemistry of a lateritic outcrop in new Caledonia through T generalized regression using Sentinel-2 and field reflectance spectra
Ibrahim, Elsy ULiege; Barnabé, Pierre ULiege; Ramanaidou, Erick et al

in International Journal of Applied Earth Observation and Geoinformation (2018), 73

Mining is fundamental for human development, yet it currently requires innovative spatial techniques as it faces diverse environmental and social pressures. With the free Sentinel-2 data of the Copernicus ... [more ▼]

Mining is fundamental for human development, yet it currently requires innovative spatial techniques as it faces diverse environmental and social pressures. With the free Sentinel-2 data of the Copernicus programme, new opportunities arise for studies related to nickel laterite, especially with its reported potential in mapping iron- oxide. This work utilizes samples from drill-holes extracted from Tiebaghi, New Caledonia. The chemical composition and the hyperspectral reflectance of each sample are obtained. The reflectance spectra are re- sampled to Sentinel-2's characteristics, and generalized linear regression was used to accurately predict Fe2O3, MgO, SiO2, Al2O3, and nickel content where three regression approaches were compared: Ridge, Elastic Net, and the Least Absolute Shrinkage and Selection Operator (LASSO). With the resulting regression models, mineral chemistry of an outcrop in the vicinity of the drill-holes is mapped by a scene of Sentinel-2. The work shows the great potential of free satellite imagery in mapping chemical characteristics of minerals and rocks. It opens up great opportunities for monitoring outcrops and for achieving more efficient mineral exploration. [less ▲]

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See detailAssessing the Discrepancy in Open-Source Atmospheric Correction of Sentinel-2 Acquisitions for a Tropical Mining Area in New Caledonia
Ibrahim, Elsy ULiege; Buydens, Guillaume ULiege; Debouny, Tom ULiege et al

in Assessing the Discrepancy in Open-Source Atmospheric Correction of Sentinel-2 Acquisitions for a Tropical Mining Area in New Caledonia (2018)

With the free Sentinel-2 (S2) data of the Copernicus programme, new opportunities arise for the mining community that can ease its environmental and social challenges through improved monitoring. At the ... [more ▼]

With the free Sentinel-2 (S2) data of the Copernicus programme, new opportunities arise for the mining community that can ease its environmental and social challenges through improved monitoring. At the moment, most users worldwide need to process S2 data to achieve surface reflectance. There are recent powerful open-source developments in atmospheric correction algorithms of S2 data such as iCOR and Sen2Cor along with MAJA that publicly shares its executable files. Open pit mining in tropical sites are not the typical conditions that semi-empirical models are designed or validated for. This work aims at assessing the discrepancy in the results of the three approaches for an area rich with laterite mining activities in central New Caledonia. Cloud retrieval is compared along with aerosol optical thickness and water vapor content estimation. Finally, consistency in surface reflectance is investigated per season, and correlations among the output of the approaches are quantified. The authors recommend to the developers of the various methods to include mining sites for validation because their highly appreciated work is import to the end-users of the raw materials community. [less ▲]

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See detailDevelopment of solar energy in Africa : A challenge in terms of resource availability and recycling.
Pirard, Eric ULiege; Belboom, Sandra ULiege

Conference (2017, October)

Focusing on Africa, sun is a renewable resource, free of charge, without any dependency of supply from other countries but implying technologies to transform this resource into electricity. Photovoltaic ... [more ▼]

Focusing on Africa, sun is a renewable resource, free of charge, without any dependency of supply from other countries but implying technologies to transform this resource into electricity. Photovoltaic panels are dedicated to this goal and present several advantages as the free cost of the fuel and no emissions during the production of electricity. These advantages are counterbalanced by the high amount of mineral resources needed, the lifetime of installations, the decreasing yield during operation years and the very limited recycling potential [less ▲]

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See detailApplication of Mid-infrared Reflectance Spectroscopy for the Identification of Minerals Present in Oil & Gas/Mining Exploration
Joassin, Marjorie; Pirard, Eric ULiege; Germay, Christophe

in Proceedings SGA2017 (2017, August)

This work aims to develop a new core logging technique based on reflectance spectroscopy in the mid-infrared domain (2.08 to 25 μm). This technique is suitable to analyse the mineralogy of rough surfaces ... [more ▼]

This work aims to develop a new core logging technique based on reflectance spectroscopy in the mid-infrared domain (2.08 to 25 μm). This technique is suitable to analyse the mineralogy of rough surfaces and will be adapted on a rock strength testing machine that scratches the core surface. The FT-IR spectrometer used in this work was tested on a list of minerals which are important in oil & gas and mining exploration. The list contains species of carbonates, halides, phosphates, sulphates, sulphides, tectosilicates and phyllosilicates. Then, a semi-automatic method was developed for mineral identification, mapping and quantification on the rough surfaces. It will be demonstrated that this process is powerful for the estimation of the mineral distribution at the exploration stage. Moreover, as it is non-destructive, low cost and quite fast, it will thus be helpful to extract additional data from the cores in a profitable way. This is critical to improve the resource efficiency, to reduce operational risks and to optimise the production in a sustainable way. These knowledges are the basis of the geometallurgical concept [less ▲]

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See detailTowards a more automated mineralogy
Pirard, Eric ULiege

in Proceedings SGA2017 (2017, August)

Automated mineralogy has been around for more than thirty years as the reference technique to support process mineralogy and geometallurgical studies. Pioneering techniques such as the QEM-SEM have been ... [more ▼]

Automated mineralogy has been around for more than thirty years as the reference technique to support process mineralogy and geometallurgical studies. Pioneering techniques such as the QEM-SEM have been further improved to benefit from the latest hardware developments in terms of stable, sensitive and efficient imaging. FEG sources, solid state x-ray detectors and almost real-time signal processing have made the most significant contributions in the last decade. A quick overview of existing technologies reveals that further improvement could be gained by merging different imaging modes and using more advanced classification algorithms such as those well known in machine learning and remote sensing. If such algorithms were complemented with hierarchical databases wherein only important economic minerals are listed with their associated probabilities of occurrences, significant improvements could be gained in automated mineral identification. This paper contributes to demonstrate that a real “mineral intelligence” of ores and materials is now within reach [less ▲]

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See detailBGDb.be: a map based search tool for geological publications
Stévens, Pierre; Pirard, Eric ULiege; Anceau, Annick ULiege

Conference (2017, July 01)

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See detailDe la Wallonie à l'Europe, les communautés de l'innovation (KIC) se mettent au service de la valorisation des déchets métalliques.
Pirard, Eric ULiege

in Pin, Dominique; Thibault, Olivier (Eds.) DES TERRITOIRES À L’EUROPE : Construire ensemble les transitions environnementales (2017, June)

La vallée de la Meuse, un des creusets historiques de la métallurgie européenne, accueille plusieurs projets d’innovation technologique dédiés au recyclage des métaux. Basés sur un partenariat public ... [more ▼]

La vallée de la Meuse, un des creusets historiques de la métallurgie européenne, accueille plusieurs projets d’innovation technologique dédiés au recyclage des métaux. Basés sur un partenariat public-privé au sein du pôle wallon Mecatech, ces projets visent à positionner la Wallonie comme une communauté de l’innovation au cœur du nouveau consortium européen EITRawMaterials. [less ▲]

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See detailMatières premières et environnement - Défis pour le développement des compétences en Afrique Centrale
Pirard, Eric ULiege

Scientific conference (2017, May 16)

Historique des programmes de formation que l'ULiège a mis en place à destination de l'Afrique dans le domaine des ressources minérales. Obstacles rencontrés à la mise en oeuvre de certains projets et ... [more ▼]

Historique des programmes de formation que l'ULiège a mis en place à destination de l'Afrique dans le domaine des ressources minérales. Obstacles rencontrés à la mise en oeuvre de certains projets et défis qui nous attendent. Perception des stratégies propres à l'espace francophone dans une dynamique de numérisation et de mondialisation tous azimuts. [less ▲]

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See detailProcess Mineralogy: An essential booster of the Circular Economy
Pirard, Eric ULiege

in Wills, Barry (Ed.) Proceedings Process Mineralogy 2017 (2017, March)

In order to develop efficient processes for the recovery of metals from both our primary mines and our urban mines, we will need to innovate in process mineralogy. This talk will give an overview of the ... [more ▼]

In order to develop efficient processes for the recovery of metals from both our primary mines and our urban mines, we will need to innovate in process mineralogy. This talk will give an overview of the role of predictive and diagnostic tools in mineralogy to achieve a more circular economy. It will go from complex polymetallic ores to the intimacy of our e-waste. [less ▲]

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See detailSubsidence related to groundwater pumping for breweries in Merchtem area (Belgium), highlighted by Persistent Scaterrer Interferometry
Declercq, Pierre-Yves; Gerard, Pierre; Pirard, Eric ULiege et al

in International Journal of Applied Earth Observation and Geoinformation (2017), 63

ERS, ENVISAT and TerraSAR-X Synthetic Aperture Radar scenes covering the time span 1992–2014 were processed using a Persistent Scatterer technique to study the ground movements in Merchtem (25 km NW of ... [more ▼]

ERS, ENVISAT and TerraSAR-X Synthetic Aperture Radar scenes covering the time span 1992–2014 were processed using a Persistent Scatterer technique to study the ground movements in Merchtem (25 km NW of Brussels, Belgium). The processed datasets, covering three consecutive time intervals, reveal that the investigated area is affected by a global subsidence trend related to the extraction of groundwater in the deeper Cambro-Silurian aquifer. Through time the subsidence pattern is reduced and replaced by an uplift related to the rising water table attested by piezometers located in this aquifer. The subsidence is finally reduced to a zone where currently three breweries are very active and pump groundwater in the Ledo-Paniselian aquifer and in the Cambro-Silurian for process water for the production. [less ▲]

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See detailSHAPE ANALYSIS OF FINE AGGREGATES USED FOR CONCRETE
HE, Huan; Courard, Luc ULiege; Pirard, Eric ULiege et al

in Image Analysis and Stereology (2016), 35(3), 159-166

Fine aggregate is one of the essential components in concrete and significantly influences the material properties. As parts of natures, physical characteristics of fine aggregate are highly relevant to ... [more ▼]

Fine aggregate is one of the essential components in concrete and significantly influences the material properties. As parts of natures, physical characteristics of fine aggregate are highly relevant to its behaviors in concrete. The most of previous studies are mainly focused on the physical properties of coarse aggregate due to the equipment limitations. In this paper, two typical fine aggregates, i.e. river sand and crushed rock, are selected for shape characterization. The new developed digital image analysis systems are employed as the main approaches for the purpose. Some other technical methods, e.g. sieve test, laser diffraction method are also used for the comparable references. Shape characteristics of fine aggregates with different origins but in similar size ranges are revealed by this study. Compared with coarse aggregate, fine grains of different origins generally have similar shape differences. These differences are more significant in surface texture properties, which can be easily identified by an advanced shape parameter: bluntness. The new image analysis method is then approved to be efficient for the shape characterization of fine aggregate in concrete [less ▲]

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See detailFrom resource to process efficiency. Educating a new generation of georesources engineers
Pirard, Eric ULiege; Fiorentino, Rosalia ULiege

in Mazijn, Bernard (Ed.) Proceedings 8th Conference on Engineering Education for Sustainable Development (2016, September)

Even though the Circular Economy paradigm clearly puts the emphasis on recycling, it is essential to understand that we will still need for decades to explore and find resources in the earth crust. Mining ... [more ▼]

Even though the Circular Economy paradigm clearly puts the emphasis on recycling, it is essential to understand that we will still need for decades to explore and find resources in the earth crust. Mining is vital to feed the loop and make sure enough metals and minerals are made available to society. But, mining is also one of the most challenging industrial operations when it comes to sustainability objectives. A modern education in mineral resources engineering must build on a strong technical background but give students the opportunity to confront their knowledge with societal needs and responsibilities. The EMerald Erasmus Mundus Master program in Georesources Engineering was set up by four leading European universities with the clear objective to educate responsible professionals who will be actors of sustainable solutions. Therefore, the University of Lorraine, the Lulea Technical University, the TU Bergakademie Freiberg and the University of Liege (coordinator) designed a unique curriculum bridging the traditional gap between natural sciences and engineering, encompassing the valley too often separating the industrial operators from the stakeholders of a mining project. The program offers a unique blend of courses from geology to mineral processing with the aim to familiarize students with the most advanced tools for improving the efficiency of processes. Field trips and industrial visits are a key component of this program as are the non-technical seminars delivered by professionals (lawyers, entrepreneurs, NGO leaders, etc.). Evaluation is often based on written reports, documentary research and short oral presentations to make sure students acquire the indispensable soft skills for efficient communication on environmental and societal issues linked to the impact of extractive activities. Internships and hands-on practices on pilot platforms or laboratory equipments are absolutely essential to reach the highest standards and meet the objectives of the master program. This is costly and can only be maintained thanks to the strong presence of the participating universities in research programs. All four universities are core partners of the EIT Raw Materials knowledge innovation community. This gives an additional leveraging effect when it comes to the education of young entrepreneurs with a strong sustainability mindset. [less ▲]

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See detailEngineering education at the heart of the Raw Materials Value Chain
Pirard, Eric ULiege; Sonnemann, Guido

in Mazijn, Bernard (Ed.) Proceedings 8th Conference on Engineering Education for Sustainable Development (2016, September)

EIT Raw Materials has the mission to reinforce Europe’s innovation capacity by preparing the entrepreneurs and innovators of tomorrow. By fully integrating the three sides of the knowledge triangle ... [more ▼]

EIT Raw Materials has the mission to reinforce Europe’s innovation capacity by preparing the entrepreneurs and innovators of tomorrow. By fully integrating the three sides of the knowledge triangle (education, research and industry), the EIT Raw Materials aims at boosting the innovation process: from idea to product; from lab to market and from student to entrepreneur. A key mission of the EIT Raw Materials is to educate young professionals and specifically engineers and scientists by breaking the barriers of classical disciplines. The so-called T-shaped professional will have a strong entrepreneurial mindset and combine an in depth knowledge of his own discipline with a sound understanding of the challenges appearing along the whole raw materials value chain, such as exploration, extraction and processing of primary resources, recycling of secondary resources and substitution of critical and toxic materials. It is essential that these T-shaped professionals understand their role within the value chain as actors of a more circular economy. Every educational activity organized under the umbrella of the EIT Raw Materials (RM) Academy will therefore make sure to involve all stakeholders of the raw materials value chain and to contribute to raising awareness with respect to the societal function of raw materials and the related supply and availability challenges. To achieve these missions and create a long lasting impact, the RM Academy aims to innovate in terms of teaching, which includes: • The promotion of problem-based learning, self organisation and learning by doing. • The offer of an open learning environment and a series of online courses. • Enabling a high degree of mobility of students and professionals. • Facilitating access to experimental platforms and pilot plants for hands-on training • Adopting a strong multidisciplinary approach (e.g. joint courses across sectors) • Thinking beyond boundaries and systematically exploring and generating new ideas • Transforming innovations into feasible business solutions • Joint curriculum development Critical reflection, peer review processes as well as assessments and collegial discussions under the roof of the EIT Raw Material Academy will be used for continuing quality development of the programs. [less ▲]

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See detailElectromagnetic survey of the Pb-Zn deposit of Lontzen, Belgium
Evrard, Maxime ULiege; Pirard, Eric ULiege; Nguyen, Frédéric ULiege

Conference (2016, May 19)

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