A5057518398- Crystallization and Solubility Studies
- Minerals Flotation and Separation Techniques
- Calcium Carbonate Crystallization and Inhibition
- Extraction and Separation Processes
- Fluid Dynamics and Mixing
- Coagulation and Flocculation Studies
- Advancements in Battery Materials
- Recycling and Waste Management Techniques
- CO2 Sequestration and Geologic Interactions
- Metallurgical Processes and Thermodynamics
- Radioactive element chemistry and processing
- Chemical Synthesis and Characterization
- Magnetic and Electromagnetic Effects
- Subcritical and Supercritical Water Processes
- Carbon Dioxide Capture Technologies
- nanoparticles nucleation surface interactions
- Electrohydrodynamics and Fluid Dynamics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Granular flow and fluidized beds
- Freezing and Crystallization Processes
- Cyclone Separators and Fluid Dynamics
- Chemical and Physical Properties in Aqueous Solutions
- Cultural Heritage Materials Analysis
- Food Chemistry and Fat Analysis
- Zeolite Catalysis and Synthesis
Laboratoire Réactions et Génie des Procédés
2016-2025
Université de Lorraine
2016-2025
Centre National de la Recherche Scientifique
2011-2025
Laboratoire de Génie Chimique
1999-2008
École Centrale de Nantes
2008
Institut National Polytechnique de Lorraine
2008
Laboratoire de Chimie Physique et Microbiologie pour l'Environnement
2008
École Nationale Supérieure des Mines de Nancy
2002
École Normale Supérieure - PSL
1996
Abstract Raman spectroscopy is an ideal method for identifying polymorphs, because it provides excellent fingerprint spectra specific to each crystal structure. Currently, successfully used the quantitative polymorphic analysis of calcium carbonate only in case binary mixtures. When a third polymorph present mixture, errors determination increase due difficulty discriminating different phases spectra. In work, new developed mixtures containing more than two polymorphs and tested vaterite,...
This paper investigated the crystallization of calcium carbonate in saline solution at different temperatures using Raman spectroscopy. Application an advanced mixture analysis algorithm based on Bayesian theory (BPSS) allowed recovery spectra three pure anhydrous polymorphs (vaterite, aragonite, and calcite). In particular, low wavenumber range between 50 300 cm−1, characteristic crystallographic structure phonons, clearly distinguished structures. Contour plots polymorph concentrations...
Abstract The removal of boron from wastewater has to be considered on a case‐by‐case basis because no compound is known precipitated quantitatively. Based an industrial case, many methods were tested for the treatment containing 50 g L −1 sulfuric acid and 0.7 boron, well‐adapted precipitation process consisting neutralization boric acids by powdered calcium hydroxide proposed. Experimental results show that under optimal conditions (50 hydroxide, temperature 90° C, time 2 h), residual...
Abstract Metals such as cobalt are particularly strategic since they present in many high‐added‐value products. Besides, at the rate of current consumption, specifically cobalt, manufacturers facing risks shortage for their supply. So, research on these metals' recovery from industrial or urban waste is highly important future. Current work focuses Li‐ion batteries by precipitation. Literature was evaluated various anions allowing to precipitate Co(II), particular hydroxide, carbonate, and...
The growth of the lithium-ion battery industry requires a secure supply raw materials and appropriate end-of-life management batteries. In almost five years, global cobalt consumption has increased by nearly 30%, driven mainly rechargeable Consequently, several risks have been identified for cobalt, in particular growing demand electric vehicles, which could exceed current production. Therefore, research into recovery this critical metal, from industrial or urban waste, is particularly...
Today Li-ion battery recycling processes allow the recovery of heavy metal elements such as copper, cobalt, nickel and manganese. On other hand, lithium is generally lost in slag or released to environment therefore not recovered. Lithium an element non-substitutable batteries which technology indispensable electromobility energy transition. Moreover, since 2020 EU has classified a "critical metal". The objective this work develop precipitation process salts from spent (LIBs), respects...
Abstract A new mixing device, suitable to achieve the of reactants undergoing fast chemical reactions, is studied. In sliding‐surface reagents are introduced in a confined zone (CMZ), which high shearing stresses created very small volume realize rapid micromixing. system parallel competing test reactions was used characterize micromixing level CMZ as function feed flow rate, rotation speed, pipe position, and geometric parameter characterizing CMZ. The influence these parameters on...
Abstract Unbaffied mixing devices are characterized by a very particular hydrodynamics. A well defined depression in the liquid surface is formed, resulting from combined vortex established liquid. The composed of one central Forced Vortex Region (FVR) and annular free region. Because FVR behaves like confined zone, this region inside an unbaffled device appears to be quite interesting carry out certain chemical reactions. In paper influence operating conditions on time two reagent feed...
Freshly precipitated alumina gel consists of very small particles (amorphous to XRD) that are agglomerated into larger (∼12 μm). When those abruptly transferred a solution at pH equal or greater than 7 and temperature 65 °C, an aging process occurs. The experiments performed in this work indicate there two mechanisms the process, structural rearrangement Ostwald ripening. occur simultaneously, but their kinetics different. In first period (i.e., 5 min aging), mechanism is rapid governs (the...