Fri
30
May
Seminars and Conferences
Troubles with Bubbles in Electrolysis | 30 Years of Bubble Sizing and Where We Need to Go in the Future
In the framework of Erasmus Mundus “Multiphase”, the Department of Applied Science and Technology-DISAT of Politecnico di Torino promotes two Application Seminars.
The first seminar will feature with the presence of Niels Deen – TU Eindhoven and is titled "Troubles with Bubbles in Electrolysis".
The energy transition is not about energy; it is about energy storage. All primary and ubiquitous sources of green energy are intermittent, and they involve electricity. Therefore, we need storage for supply security and conversion to also serve energy-hungry mobile applications (read: heavy transport). Hydrogen is a prime candidate solution, but we need a 'giant step for mankind' in electrochemical H2 production techniques to make this possible. In electrolysis, bubbles are the game player and understanding bubble dynamics/transport in electrolysers is the game changer. In this talk Niels Deen talk about our attempts to numerically model bubble growth and detachment, which is a first step to gain understanding of bubble dynamics in electrolysis. He will zoom in on the role of Marangoni stress acting on the bubble surface. These stresses are a fascinating phenomenon that generates flow around the bubble and near the electrode, leading to varying forces acting on the bubble and thereby dictating the bubble size upon detachment. As small bubbles are harder to separate from the electrolyte, understanding Marangoni stresses is the key to taming bubbles in electrolysis.
The second seminar will feature with the presence of Sebastian Maas – SOPAT and is titled "30 Years of Bubble Sizing and Where We Need to Go in the Future".
Bubble, droplet and particle characterization is a critical discipline within industrial processes, enabling precise control and optimization of product quality across diverse sectors. This lecture explores a spectrum of advanced technologies essential for comprehensive particle analysis, including Focused Beam Reflectance Measurement (FBRM), microscopy, inline microscopy, spatial filter velocimetry, and laser diffraction. Each technique oƯers unique insights into particle size, shape, distribution, and behavior, crucial for enhancing product performance, ensuring consistent manufacturing quality, and meeting regulatory standards. A particular emphasis is placed on the characterization of bubble sizes, a key parameter in various industrial applications, such as flotation processes. Flotation, widely employed in mineral processing and wastewater treatment, relies on accurate bubble sizing to optimize particle-bubble interactions and improve separation eƯiciency. This lecture highlights the application for bubble sizing and presents an industrial case study on flotation, demonstrating the critical role of particle and bubble analysis in driving innovation and operational excellence.
For more information contact daniele.marchisio@polito.it or marco.marongiu@polito.it.
The first seminar will feature with the presence of Niels Deen – TU Eindhoven and is titled "Troubles with Bubbles in Electrolysis".
The energy transition is not about energy; it is about energy storage. All primary and ubiquitous sources of green energy are intermittent, and they involve electricity. Therefore, we need storage for supply security and conversion to also serve energy-hungry mobile applications (read: heavy transport). Hydrogen is a prime candidate solution, but we need a 'giant step for mankind' in electrochemical H2 production techniques to make this possible. In electrolysis, bubbles are the game player and understanding bubble dynamics/transport in electrolysers is the game changer. In this talk Niels Deen talk about our attempts to numerically model bubble growth and detachment, which is a first step to gain understanding of bubble dynamics in electrolysis. He will zoom in on the role of Marangoni stress acting on the bubble surface. These stresses are a fascinating phenomenon that generates flow around the bubble and near the electrode, leading to varying forces acting on the bubble and thereby dictating the bubble size upon detachment. As small bubbles are harder to separate from the electrolyte, understanding Marangoni stresses is the key to taming bubbles in electrolysis.
The second seminar will feature with the presence of Sebastian Maas – SOPAT and is titled "30 Years of Bubble Sizing and Where We Need to Go in the Future".
Bubble, droplet and particle characterization is a critical discipline within industrial processes, enabling precise control and optimization of product quality across diverse sectors. This lecture explores a spectrum of advanced technologies essential for comprehensive particle analysis, including Focused Beam Reflectance Measurement (FBRM), microscopy, inline microscopy, spatial filter velocimetry, and laser diffraction. Each technique oƯers unique insights into particle size, shape, distribution, and behavior, crucial for enhancing product performance, ensuring consistent manufacturing quality, and meeting regulatory standards. A particular emphasis is placed on the characterization of bubble sizes, a key parameter in various industrial applications, such as flotation processes. Flotation, widely employed in mineral processing and wastewater treatment, relies on accurate bubble sizing to optimize particle-bubble interactions and improve separation eƯiciency. This lecture highlights the application for bubble sizing and presents an industrial case study on flotation, demonstrating the critical role of particle and bubble analysis in driving innovation and operational excellence.
For more information contact daniele.marchisio@polito.it or marco.marongiu@polito.it.