A5014218616- Surfactants and Colloidal Systems
- Pickering emulsions and particle stabilization
- Minerals Flotation and Separation Techniques
- Enhanced Oil Recovery Techniques
- Electrostatics and Colloid Interactions
- Fluid Dynamics and Thin Films
- Surface Modification and Superhydrophobicity
- Spectroscopy and Quantum Chemical Studies
- Fluid Dynamics and Mixing
- Fluid Dynamics and Heat Transfer
- Petroleum Processing and Analysis
- Electrohydrodynamics and Fluid Dynamics
- Polymer Surface Interaction Studies
- Adhesion, Friction, and Surface Interactions
- Metallurgical Processes and Thermodynamics
- Material Dynamics and Properties
- nanoparticles nucleation surface interactions
- Chemical and Physical Properties in Aqueous Solutions
- Analytical Chemistry and Chromatography
- Advanced Polymer Synthesis and Characterization
- Iron oxide chemistry and applications
- Electrical and Bioimpedance Tomography
- Micro and Nano Robotics
- Extraction and Separation Processes
- Proteins in Food Systems
Shumen University
2023-2024
Sofia University "St. Kliment Ohridski"
2013-2023
Institute of Physical Chemistry
2019-2021
University of Illinois Chicago
2018
The University of Queensland
2007-2011
University of Newcastle Australia
2004-2006
TU Bergakademie Freiberg
2001
The quality of foaming products (such as beer and shampoo) the performance industrial processes that harness foam froth flotation minerals or fractionation proteins) depend upon stability. In this study, experiments are performed to study effect environmental humidity on collapse static foams. dependency rate at which a collapses is demonstrated, we propose hypothesis for bubble bursting due Marangoni instability induced by nonuniform evaporation help explain dependency. This supported...
The flotation froth must have low durability to be useful for the mineral separation process. For this reason, suitable frothers are used. Their role is suppress coalescence of bubbles in liquid phase reactor and form a short-lasting cap above level liquid. Indeed, one could state question; what makes bubble coalesce pure water? They decrease their surface energy, which related hydrophobicity bubbles. In such case, why do with very small concentrations, practically not affecting tension...
We report the effects of ions on rupture and lifetime aqueous foam films formed from sodium chloride (NaCl), lithium (LiCl), acetate (NaAc), chlorate (NaClO 3) using microinterferometry. In case NaCl LiCl, prepared salt solutions below 0.1 M were unstable they thinned until rupturing. The film measured first interferogram (appearing at a thickness order 500 nm) was only second or so. However, relatively long lasting nondraining above observed. significantly longer by 1 to 2 orders magnitude,...
Breaking point: Switchable peptide surfactants are used to demonstrate that the extent of cross-linking in an interfacial surfactant layer can control rate emulsion coalescence. Pictured is rupture aqueous thin film where lacks sufficient strength prevent hole formation, but nonetheless dramatically slows expansion.
In recent years, most of the studies have been adapted to determine optimum conditions for flotation very fine minerals. this context, besides parameters such as particle size, morphology, and pH, effects frother type its concentration present a significant role in optimizing conditions. Therefore, froth stability during can be considered one important issues. Considering that knowledge mind, study, foamability decay rate six frothers (PPG200, PPG400, PPG600, BTEG, BTPG, BDPG) having...