Electrolytic water hydrogen production systems are highly coupled and operate under complex and hazardous conditions, making it challenging to conduct extreme experiments on physical systems, such as operating at less than 20% of the rated current. This study focuses on a megawatt-scale alkaline electrolyzer and develops its corresponding digital twin model. Operational data demonstrate that temperature, pressure, and lye flow rate have significant impacts on the hydrogen concentration in oxygen and system voltage. The hydrogen concentration in oxygen is a crucial factor for system safety, and changes in pressure or lye flow rate can lead to notable variations in hydrogen concentration. Based on operational data, multivariate nonlinear fitting of empirical equations was performed using Matlab to establish models for voltage, Faraday efficiency, hydrogen concentration in oxygen, and system pressure in the alkaline electrolyzer. The simulation results were analyzed and validated theoretically, showing consistency with actual engineering data. The digital twin model was implemented and controlled in real time using a programmable logic controller. The virtual mapping of the alkaline electrolyzer was successfully achieved, providing an experimental platform for future investigations into wide power fluctuations.
Abstract Daniel Resasco is widely recognized for his significant contributions to the science and application of heterogeneous catalysis. In this Account, we highlight key points along his career path, demonstrating how fundamental insights─drawn from rigorous kinetic analysis, precise materials synthesis, and in situ characterization─enabled breakthroughs in areas ranging from strong metal–support interactions to biomass upgrading. Daniel’s work on selective ring opening of hydrocarbons influenced the production of cleaner diesel fuels, while his innovative methods for synthesizing single-walled carbon nanotubes accelerated progress in nanomaterial applications. He later pioneered the use of Pickering emulsions in catalysis, employing amphiphilic materials to control selectivity and facilitate product separation at water–oil interfaces. Throughout these varied application areas, Daniel consistently blended a rigorous mechanistic approach with pragmatic goals, ensuring that the concepts he uncovered could be translated across topics and have practical impact. Beyond his scientific contributions, we highlight Daniel’s commitment to supporting the next generation of researchers in catalysis science.
Engineers of today must be shaped to tackle global challenges that are becoming increasingly complex. With globalization and digitalization, new sets of skills are required of graduated engineers. Often referred to as “21st century skills”, they encompass teamwork, leadership, digital literacy, and communication. Research has demonstrated that active learning methods such as problem-based learning (PBL) and project-based learning (PjBL), which emphasize “learning by doing,” are more effective in shaping competent engineers. More recently, challenge-based learning (CBL) has emerged as a growing pedagogical approach. The objective of this study is to evaluate the integration of CBL within the online master's program in Energy for Circular Economy in Sri Lanka, developed within an EU Erasmus + project, with a specific focus on understanding students’ experiences. By delving into the social dimension of the online learning environment, the overarching aim is to enhance insights into the online learning experience and, consequently, improve students’ progression throughout the program. An online survey was conducted among first year’s students attending the challenge-based course on Entrepreneurial and Innovative Challenges in the field of Energy. Overall, students perceived the course and its CBL approach as a distinctive experience that significantly enhanced their critical thinking, teamwork, communication, and leadership skills compared to any previous courses. One identified issue was the availability of teachers/mentors to supervise the teams, which can seriously hinder the success of CBL approach.
SOILL-Startup is pleased to present the catalogue of the current Mission Soil Living Labs funded under the Mission “A Soil Deal for Europe.” This publication, created with input from each of the Living Labs, provides an initial overview of the planned work, scope, and ambitions of these Living Labs as they embark on their journey toward healthier soils across Europe. For each Lab, we present details on target landuse types, relevant Mission Soil objectives, key strengths, partnerships, and improvement techniques, giving readers a comprehensive look at the strategies and approaches guiding these initiatives. The catalogue reflects the shared commitment of communities and organisations across Europe to tackle pressing soil challenges. By offering insights into each Living Lab’s specific goals and activities, it serves as a valuable resource for those interested in learning about or connecting with these pioneering efforts. Beyond showcasing their planned work, this catalogue aims to foster collaboration.
