Emmanuelle Cecchi

Emmanuelle Cecchi
Université du Québec en Abitibi-Témiscamingue · Unit of Research and Mineral Technology Service (URSTM)

PhD

About

16
Publications
4,584
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396
Citations
Introduction
I've always been interested in science and particularly with the whole geoscience domain. Since then, I've studied geology with a particular love for mineralogy. After that I've begun applying my knowledge in the Environmental domain. My goal is to be able to develop processes to help with the valorization of mining and industrial waste.
Additional affiliations
May 2010 - present
Institut National de la Recherche Scientifique
Position
  • Research Associate
Education
April 2004 - November 2007
Institut National de la Recherche Scientifique
Field of study
  • Earth-Science, metallurgy

Publications

Publications (16)
Article
Increasing use of rare earth elements (REEs) in modern technologies and existing or expected imbalances between demand and supply have led many countries, including Canada, to consider the exploitation of their own REEs primary sources. The objective of this study is a thorough characterization of the flotation tailings generated during the pre-con...
Article
In the actual context of the greenhouse gases (GHGs) control, the industrial sector must find efficient and practical solutions to reduce their emissions. The feasibility of an aqueous mineral carbonation (MC) process was demonstrated at the laboratory scale under original mild conditions. In the continuity of this research, the process was tested...
Article
Concerns about global warming phenomena induced the development of research about the control of anthropogenic greenhouse gases emissions. The current work studies on the scaling up of aqueous mineral carbonation route to reduce the CO2 emissions at the chimney of industrial emitters. The reactivity of serpentinite in a stirred tank reactor was stu...
Article
The use of CO2 mineral carbonation represents an attractive approach to recycling waste concrete. In this study, the effect of gas pressure, Liquid/Solid (L/S) ratio (w/w), Gas/Liquid (G/L) ratio (v/v) and reaction time for CO2 sequestration were investigated. While carbonation of such matrix is already described, this study opens new insights in c...
Article
This paper focuses on an energy and economic analysis of a mineral carbonation process developed to treat raw flue gas issued from an industrial plant. The process uses Serpentinite based mining residues available in very large quantities close to an industrial center in southern Quebec. A model based on a mass balance obtained from laboratory scal...
Article
Full-text available
This work focuses on the influence of different parameters on the efficiency of steel slag carbonation in slurry phase under ambient temperature. In the first part, a response surface methodology was used to identify the effect and the interactions of the gas pressure, liquid/solid (L/S) ratio, gas/liquid ratio (G/L), and reaction time on the CO2 r...
Article
Following the promising results obtained on the laboratory scale, an aqueous mineral carbonation process was tested under industrial conditions as part of a pilot project conducted in a cement plant in Quebec. Experiments were conducted using a Parr 18.7 L reactor with cement plant flue gas (14-18 vol.%CO2) and serpentinite tailings as a source of...
Article
Full-text available
Mineral carbonation of serpentinite mining residue offers an environmentally secure and permanent storage of carbon dioxide. The strategy of using readily available mining residue for the direct treatment of flue gas could improve the energy demand and economics of CO2 sequestration by avoiding the mineral extraction and separate CO2 capture steps....
Article
Full-text available
Chrysotile mining in Québec has produced about 2 Gt of serpentinite residue. The present study investigates the magnetic separation of serpentinite residue from Québec to produce a non-magnetic feed stock for mineral carbonation. This study also scrutinises the quality of the magnetic fraction recovered for use as a source of iron ore. The optimum...
Article
Naturally occurring mineral carbonation can significantly reduce GHG emissions. Adapting the reaction in order to sequester post combustion CO2 is a potential industrial mitigation pathway, but such a process must be chemically and economically efficient. Research to date has focused on reacting a concentrated CO2 stream with alkaline rocks. Signif...
Article
Mineral carbonation is known as one of the safest ways to sequester CO2. Nevertheless, the slow kinetics and low carbonation rates constitute a major barrier for any possible industrial application. To date, no studies have focused on reacting such material with a relatively low partial pressure of CO2 (pCO2) close to flue gas conditions. In this w...
Article
Full-text available
Direct dry gas-solid carbonation is a simple approach towards mineral carbon dioxide sequestration. The route theoretically implies the direct reaction of CO2 with silicates of Calcium and Magnesium in dry condition to form stable, insoluble metal carbonates. The mining regions of southern Québec have a large deposit of serpentinite residues. The c...
Article
This study examines the production of MgCl2 from raw chrysotile tailings. The tailings were exposed to a dry carbochlorination reaction in a non-rotating oven. The effects of temperature, gas flow rate and time on the recovery of various cations were examined. Our results show that temperature is the determining factor for both the recovery of Mg (...

Projects

Projects (3)
Archived project
Developing processes for the management and valorization of mining and industrial wastes coming from the REE industry.
Project
Valorization of various mine and industrial waste from the Québec Province by sequestrating CO2 from industrial flue gaz via mineral carbonation
Project
Extracting magnesium as MgCl2 from serpentinite mine tailings by pyrometallurgical processes.