References of "Léonard, Angélique"
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See detailGlucose production: influence of the datasets and of the long term emissions on LCA results
Gerbinet, Saïcha ULiege; Belboom, Sandra ULiege; Léonard, Angélique ULiege

Poster (2017, May 08)

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be ... [more ▼]

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be difficult to evaluate by LCA, the results obtained with two different LCA databases, Gabi and EcoInvent, are compared in this work. The production of glucose from raw materials can be divided in two steps: the agricultural step allowing the cereal production, and the conversion step including the extraction of the starch from the plant and its hydrolysis into glucose. Preliminary results underline the high impact of the agricultural step, so a special attention has been paid to these data. Specific Belgian data collected by the Walloon Agricultural Research Centre (CRA-W) (2014) [1] have been used as primary data (yield, amount of fertilizers, etc.), either using EcoInvent or Gabi datasets background data to model fertilizers, diesel consumption, etc. A third model was built using only data available in Ecoinvent for corn and wheat cultures. For the conversion steps, literature data have been used along with some industrial data. Based on these multiple sources, it is possible to compare the LCA results for the production of 1 kg of glucose for three different cases. The results underlined that the differences between the two databases are smaller than the differences between specific data (Belgium data) or non-specific data (Ecoinvent) for the agricultural steps. Nevertheless, in some impact categories, the differences between the two databases remain high. The presentation will underline where these differences are coming from. This leads to also analyze the differences between background data such as energy generation or fertilizer production. Moreover, special attention has been put on the influence of long-term emissions, in the Ecoinvent database. As these emissions have a large influence in some impact categories, we have to clarify if we should include them or not in view of comparison with GaBi database. Moreover, the Ecoinvent model and the GaBi models have been realized in two different software (Simapro and GaBi, respectively), therefore, some checks have been performed to see if some differences can be induced by the software. In conclusion, this presentation will underline which is the sensibility of the results to parameters not controlled by the LCA practitioner, such as the datasets hypotheses, the software differences, etc. 1. Walloon Agricultural Research Centre (CRA-W), ALT4CER project. 2014. [less ▲]

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See detailLife Cycle Assessment of freight transport in Belgium
Merchan Arribas, Angel ULiege; Belboom, Sandra ULiege; Léonard, Angélique ULiege

in Cools, Mario; Limbourg, Sabine (Eds.) Proceedings of the BIVEC-GIBET Transport Research Days 2017 (2017, May)

BRAIN-TRAINS is a project supported by the Belgian Federal Government that deals with the possible development of rail freight intermodality in Belgium, analysing the current situation of the intermodal ... [more ▼]

BRAIN-TRAINS is a project supported by the Belgian Federal Government that deals with the possible development of rail freight intermodality in Belgium, analysing the current situation of the intermodal freight transport from an interdisciplinary perspective. Life Cycle Assessment (LCA) methodology has been chosen to analyse the environmental impact of freight transport in Belgium. In a first stage we have carried out the LCA of rail freight transport, inland waterways transport and road freight transport independently. The purpose of this paper is to discuss the first results obtained from the study of the environmental impacts of inland freight transport using the LCA methodology. [less ▲]

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See detailDrying recycled fiber rejects in a bench-scale cyclone: Influence of device geometry and operational parameters on drying mechanisms
Grimm, Alejandro; Elustondo, Diego; Mäkelä, Mikko et al

in Fuel Processing Technology (2017), 167

Abstract Significant amounts of waste sludge and rejects are generated by pulp and paper mills, and stricter environmental regulations have made waste handling a global challenge. Thermochemical ... [more ▼]

Abstract Significant amounts of waste sludge and rejects are generated by pulp and paper mills, and stricter environmental regulations have made waste handling a global challenge. Thermochemical conversion of mechanically dewatered by-products is expensive and inefficient due to their high moisture content; therefore drying is a vital unit operation in waste management. This paper reports results from drying of light coarse fiber reject in a bench-scale cyclone that allows changes in geometry. For the sake of comparison, convective fixed-bed drying tests were also performed. The results showed that the drying rate in the cyclone was hundreds of times higher than in the fixed-bed. For cyclone drying, the inlet air velocity was the most important factor in both determining the drying rate and residence time of the material. This led to the hypothesis that grinding of the reject particles due to particle-wall and particle-particle collisions play a crucial role in enhancing the efficiency of heat and mass transfer. In addition to inlet air velocity, cyclone geometry was the main factor that determined particle residence time, as drying air temperature mainly determined drying rate. [less ▲]

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See detailInfluence of sawdust addition on drying of wastewater sludges: Comparison of structural characteristics
Li, Jie; Plougonven, Erwan ULiege; Fraikin, Laurent ULiege et al

in Drying Technology (2017), 35(8), 925-932

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See detailEffects of the soil pore network architecture on the soil’s physical functionnalities
Smet, Sarah ULiege; Beckers, Eléonore ULiege; Léonard, Angélique ULiege et al

in Geophysical Research Abstracts (2017), 19

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See detailBRAIN-TRAINS: Integrating the LCA methodology in and interdisciplinary project
Merchan Arribas, Angel ULiege; Belboom, Sandra ULiege; Léonard, Angélique ULiege

in Proceedings of the 5th international conference on Life Cycle approaches (2016, November 09)

BRAIN-TRAINS is a project supported by the Belgian Federal Government that deals with the possible development of rail freight intermodality in Belgium, approaching this transport issue from an ... [more ▼]

BRAIN-TRAINS is a project supported by the Belgian Federal Government that deals with the possible development of rail freight intermodality in Belgium, approaching this transport issue from an interdisciplinary perspective. Life Cycle Assessment (LCA) methodology is used to analyse the sustainability impact of rail freight intermodality. The rail freight system has been divided in three sub-systems: rail transport operation, rail infrastructure and rail transport equipment (locomotives and wagons). First, a SWOT analysis of the intermodal rail freight transport has been performed to identify internal characteristics and possible external trends of the intermodal rail freight transport. The most important elements identified in the SWOT analysis have been selected through a Delphi-technique with the collaboration of a panel of expert. Thirdly, the selected elements have been translated into clear and measurable parameters, defining for every parameter an input value to quantify the scenarios. The parameters are measured in “tonne-kilometre”. Finally, three divergent Belgian scenarios with a time horizon set in 2030 have been built for further analysis. These scenarios are directly linked to the third strategic goal of the European Commission’s White Paper on transport (2011), which aims to shift the 30% of road freight over 300 km to other modes such as rail transport by 2030. As a result, a best, worst and medium case scenarios have been developed, depending on whether the 30% shift has been successfully accomplished, the status quo has been maintained or the goal has not been completely reached by 2030, respectively. The direct transport emissions and energy consumption during the rail transport activity have been determined using the LCA methodology. These LCA results have been used to improve the accuracy of existing commercial databases as Ecoinvent for the Belgian situation. [less ▲]

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See detailLife cycle assessment of on-site accelerated food waste composter
Groslambert, Sylvie ULiege; Léonard, Angélique ULiege; Finet, Sébastien

Poster (2016, November)

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See detailINFLUENCE OF THE DATASETS CHOICE ON LCA RESULTS: EXAMPLE OF GLUCOSE PRODUCTION
Gerbinet, Saïcha ULiege; Belboom, Sandra ULiege; Léonard, Angélique ULiege

Conference (2016, October 27)

The aim of this study is to have a good understanding of the environmental impact of glucose production to be able to study material produce from glucose. Glucose is general-ly produced from corn or wheat ... [more ▼]

The aim of this study is to have a good understanding of the environmental impact of glucose production to be able to study material produce from glucose. Glucose is general-ly produced from corn or wheat. Since agricultural processes are known to be difficult to evaluate by LCA, the results obtained with two different LCA databases, Gabi and EcoIn-vent, are compared in this work. The production of glucose from raw materials can be divided in two steps: the agricul-tural step allowing the plant production, and the conversion step including the extraction of the starch from the plant and its hydrolysis into glucose. Preliminary results underline the high impact of the agricultural step, so a special attention has been paid to these data. Specific Belgian data collected by the Walloon Agricultural Research Centre (CRA-W) (2014) [1] have been used as primary data (yield, amount of fertilizers, etc.), either using EcoInvent or Gabi datasets background data to model fertilizers, diesel consumption, etc. A third model was built using only data available in Ecoinvent for corn and wheat cultures. For the conversion step, literature data have been used along with some industrial data. As few studies are available in the literature concerning starch hydrolysis, the focus has been placed on data validation (mass balance checks, cross-reference information, etc.). Based on these multiple sources, it is possible to compare the LCA results for the pro-duction of 1 kg of glucose for three different cases, summarized in the following table. Table 1: Summary of modelled cases Agricultural step Conversion steps Primary data Dataset Primary data Dataset Case 1 Belgian GaBi Literature + Industry GaBi Case 2 Belgian Ecoinvent Literature + Industry Ecoinvent Case 2 Ecoinvent Literature + Industry Ecoinvent The results obtained using these three models will be presented, at both the inventory and impact assessment steps. They show significant differences and highlight the need to understand in depth the involved assumptions when developing the datasets, in addition to the ones adopted for the inventory. These differences in results lead to higher uncer-tainties, allowing only to have a range of possible values as a result. We make the choice to only communicate this range of value and not an absolute value when communicating the results of this study but this leads to some disadvantages such as difficulties in com-parison, etc. [less ▲]

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See detailLIFE CYCLE IN PRACTICE – FEEDBACK FROM A SME'S COACH
Groslambert, Sylvie ULiege; Léonard, Angélique ULiege

Conference (2016, October 27)

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See detailPARTNERSHIP with a glass wool producer for accurate LCA
Gerbinet, Saïcha ULiege; Briard, Vincent; Pigeolet, Jean-Pierre et al

Conference (2016, October 08)

This presentation aims to illustrate how a partnership with the private sector can progressively become a win-win collaboration. Taking into account the environmental aspects in the building sector has ... [more ▼]

This presentation aims to illustrate how a partnership with the private sector can progressively become a win-win collaboration. Taking into account the environmental aspects in the building sector has become unavoidable. Knauf Insulation, a glass wool producer, has started to evaluate the environmental impacts of it manufacturing processes for drafting Environmental Product Declarations (EPD). This first objective was mainly intended to respond to a market demand for EPDs of their products. Our first contact with Knauf Insulation was for drawing up EPDs of 10 of their products. This first work has shown the need for a more flexible tool to allow rapid life cycle analyze of a product and publication of an EPD, and thus respond quickly to market demands. The need of a better understanding of the environmental impact of the process is also underline to allow to follow the evolution of the impact and to reduce it. All the glass wool products are manufactured in a similar way, only a few parameters, such as density or thickness, are modified in the process to produce a given product. We have therefore chosen to develop a generic model that can be used for all glass wool products produced by Knauf Insulation, in any of their plants. The LCA model was developed in GaBi, and thanks to a positive collaboration with Thinkstep, the software editor, and Knauf Insulation, the model is finetuned for the production plants. Knauf Insulation can use this model for EPDs as well as for Ecoconception. The model is built to be user-friendly: the user sets the product characteristics and dimensions, and in which plant (or combination of plants) it is produced. The data collection is performed by Knauf Insulation with our support. When new data are available, the model is easily updated. Therefore the model is easy to use, easy to update and accurate. Thanks to this positive experience the collaboration is ongoing. The same modelling aspects have been adapted to another insulation product from Knauf Insulation, stone wool. Furthermore, Knauf Insulation has developed a new binder for its products called ECOSE and produced from renewable materials (biomass), and is formaldehyde-free. The previous LCA underline the need of a better characterization of ECOSE in a LCA perspective. Therefore, a PhD is underway to evaluate the impacts of this binder and its applications (glass wool products) as well as its future applications. This story underlines how the partnership between the university and private sector is a win-win situation, staring from EPD and leading to much needed fundamental research, more accurate EPDs and better awareness of the environmental impacts in general, when the private sector is convinced with the interest of the demarche. [less ▲]

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See detailEnvironmental impact of glucose: influence of the datasets choice on LCA results
Gerbinet, Saïcha ULiege; Belboom, Sandra ULiege; Léonard, Angélique ULiege

Conference (2016, October 06)

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be ... [more ▼]

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be difficult to evaluate by LCA, the results obtained with two different LCA databases, Gabi and Ecoinvent, are compared in this work. The production of glucose from raw materials can be divided in two steps: the agricultural steps allowing the plant production, and the conversion step including the extraction of the starch from the plant and its hydrolysis into glucose. Preliminary results underline the high impact of the agricultural step, so a special attention has been paid to these data. Specific Belgian data collected by the Walloon Agricultural Research Centre (CRA-W) (2014) [1] have been used as primary data (yield, amount of fertilizers, etc.), either using Ecoinvent or GaBi datasets background data to model fertilizers, diesel consumption, etc. A third model was built using only data available in Ecoinvent for corn and wheat cultures. For the conversion steps, literature data have been used along with some industrial data. As few studies are available in the literature concerning starch hydrolysis, the focus has been placed on data validation (mass balance checks, cross-reference information, etc.). Based on these multiple sources, it is possible to compare the LCA results for the production of 1 kg of glucose for three different cases, summarized in the following table. The results obtained using these three models will be presented, at both the inventory and the impact assessment steps. They show significant differences and highlight the need to understand in depth the involved assumptions when developing the datasets, in addition to the ones adopted for the inventory. [less ▲]

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See detailGlucose production: influence of the datasets choice on LCA results
Gerbinet, Saïcha ULiege; Belboom, Sandra ULiege; Léonard, Angélique ULiege

Poster (2016, September 22)

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be ... [more ▼]

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be difficult to evaluate by LCA, the results obtained with two different LCA databases, Gabi and EcoInvent, are compared in this work. The production of glucose from raw materials can be divided in two steps: the agricultural step allowing the plant production, and the conversion step including the extraction of the starch from the plant and its hydrolysis into glucose. Preliminary results underline the high impact of the agricultural step, so a special attention has been paid to these data. Specific Belgian data collected by the Walloon Agricultural Research Centre (CRA-W) (2014) [1] have been used as primary data (yield, amount of fertilizers, etc.), either using EcoInvent or Gabi datasets background data to model fertilizers, diesel consumption, etc. A third model was built using only data available in Ecoinvent for corn and wheat cultures. For the conversion step, literature data have been used along with some industrial data. As few studies are available in the literature concerning starch hydrolysis, the focus has been placed on data validation (mass balance checks, cross-reference information, etc.). Based on these multiple sources, it is possible to compare the LCA results for the production of 1 kg of glucose for three different cases, summarized in the following table. Table 1: Summary of modelled cases Agricultural step Conversion steps Primary data Dataset Primary data Dataset Case 1 Belgian GaBi Literature + Industry GaBi Case 2 Belgian Ecoinvent Literature + Industry Ecoinvent Case 2 Ecoinvent Literature + Industry Ecoinvent The results obtained using these three models will be presented, at both the inventory and impact assessment steps. They show significant differences and highlight the need to understand in depth the involved assumptions when developing the datasets, in addition to the ones adopted for the inventory. [less ▲]

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See detailIntegrated Project with Focus on Energy Transition and Circular Economy for Developing Engineering Students' Soft Skills
Léonard, Grégoire ULiege; Pfennig, Andreas ULiege; Toye, Dominique ULiege et al

Poster (2016, September 05)

The present work reports the experience of an integrated project developed at the University of Liege for master students in chemical engineering. The goals are to promote the acquisition of soft skills ... [more ▼]

The present work reports the experience of an integrated project developed at the University of Liege for master students in chemical engineering. The goals are to promote the acquisition of soft skills and to consolidate technical knowledge by integrating and linking chemical engineering disciplines usually taught separately. A case study was selected to address some of the challenges related to energy transition: students had to design the energy system of a remote island and make it as energy independent and CO2-neutral as possible by 2030. The course of action during the academic year, the assessment of soft skills, and the tools offered to ease the mentoring and encourage the acquisition of soft skills are described. Not all implemented techniques performed equally well, and this project finally appeared to be a challenge for the teaching team as well. 1 Introduction and background Over the last few years, University authorities, industrial partners as well as national and international experts that evaluated the education quality of our Department (AEQES, CTI) strongly suggested that opportunities should be offered to students to increase their soft skills as part of their curriculum. Moreover, many developments in chemical engineering are related to energy transition and circular economy, which are both transdisciplinary to conventional lectures. In this paper, we present methods and mentoring tools developed to teach students technical and soft skills for multi-disciplinary topics. 2 Description of the integrated project Objectives and constraints were defined at the onset of the project for both technical and soft skills. The technical objective was to propose an energy system that would make Reunion Island as energy independent and CO2-neutral as possible by 2030. This idea originated in the challenge set by the Eurecha 2015 student contest[1], for which students had to design facilities for a sheikhdom: electricity, water recycling, production of fertilizers… In our case, Reunion Island (~850 000 inhabitants) was considered as a case study as it is remote, has large biomass resources and high potential for renewable energies. Besides the objectives mentioned above and in order to force students to look at chemical engineering processes, the treatment of wastewater was imposed as well as the use of a synthetic liquid fuel as energy carrier. The targeted soft skills included working in large groups of minimum 4 students, efficient communication of results in English - both written and oral -, ability to integrate knowledge from various disciplines, development of critical mind and demonstration of independent and creative thinking. 3 Course of actions A team of 8 professors and senior scientists mentored the project and contributed to its assessment. The 10-ECTS project was divided in two parts. In the fall semester, students made global energy balances to design the energy system that would fulfill the objectives. As a result, a Sankey diagram of the energy flows on Reunion Island by 2030 was produced to allow for an overview of the available Island’s resources and needs, as well as of processes that can make the link between resources and needs. In the spring semester, two processes identified in the first part, namely the synthesis of bio-ethanol and bio-methanol, were modelled in more details using commercial software. Different tools were used to encourage student initiatives and work: • The use of a shared on-line portfolio for students to gather their documents improved their internal communication, but this remained a marginal channel for communication with teachers • In the fall semester, students orally presented progress reports every two weeks. After a feedback to students, the teaching team met to discuss the achievements and set the objectives for the next two weeks. This was very positive for the communication inside the teaching team. However, presentations every fortnight implied a work overload for students that had to constantly focus on preparing the presentations. • From the beginning, students were strongly encouraged to reach out to field experts whose contacts were provided. However, they preferred to rely mostly on Internet as their main source of information and reached out only rarely for help and usually very late. • In the fall semester, students had to designate new team leaders in turn every fortnight. This was abandoned as it prevented the establishment of clear structures in the group, reducing its efficiency. • In the spring semester, work tables allowed students to work directly with the teacher specialized in their task. This was appreciated by students and teachers, and it needs to be further encouraged. • Help in the group organization and interactions was provided by the PSGO (psychology of groups and organizations). This also included videoscopy, i.e. filming the students during their presentations and analyzing the records with them. This help was appreciated by students. The assessment was based on technical results for 60%, and soft skills for 40%. The evaluation of technical skills was done partly by all teachers equally and partly by teachers whose expertise was the closest to the technical sub-tasks. For soft skills, efficient communication, creativity in the work and results and links with conventional lectures were assessed. Critical thinking was evaluated through the relevance of qualitative and quantitative results and discussions. Group work was assessed by the teachers as well as by students through mutual evaluation. 4 Conclusions and perspectives The integrated project gave students a first opportunity to improve their soft skills along with their technical knowledge. It also improved their communication skills and their fluency in English. The teaching team proposed different mentoring techniques to encourage efficient work, with varying results. Finally, as the assessment ignored soft skills improvements, it may be modified by evaluating soft skills all year long so both the final result and the observed improvements contribute to the grade. Reference Eurecha, The European Committee for the Use of Computers in Chemical Engineering Education, 2015. Announcement for student contest problem competition 2015. http://bari.upc.es/eurecha/. [less ▲]

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See detailTeaching of Life Cycle Assessment methodology to sensitize future engineers to sustainable development
Belboom, Sandra ULiege; Léonard, Angélique ULiege

in Proceedings of the 8th Conference on ‘Engineering Education for Sustainable Development’ (2016, September)

Detailed reference viewed: 34 (1 ULiège)