To broaden the application of biomethanation for energy storage and renewable integration, this study investigates the performance of a trickle-bed reactor (TBR) for hydrogen (H2) utilisation in biogas upgrading, using both pure Carbon dioxide (CO2) and biogas-derived CO2 as substrates for methane (CH4) …

Intensive agriculture relies heavily on synthetic fertilizers, causing resource depletion and environmental issues such as nutrient leaching. Biogas liquid digestate offers a nutrient-rich byproduct from anaerobic digestors as a circular alternative source for plant nutrients in closed-loop. Within …

Thesis which explores a Wingate variation that we developed together to better simulate athletes’ sport conditions characterised by repeated short bouts of high-intensity effort. The aim of this thesis was to investigate the interrelationship between Body Mass Index (BMI) and anaerobic performance using …

Polyhydroxyalkanoate (PHA) is a biodegradable bioplastic that can be produced by bacteria when consuming a carbon source. Volatile fatty acids (VFAs) are used as building blocks for PHA bioplastics and can be efficiently produced from organic waste through anaerobic digestion. However, the variable composition …

Biogas production involves the complex process of anaerobic digestion in bioreactors. This paper presents numerical modeling results and analysis of bioreactors. We discuss research methodology, model geometry, internal bioreactor processes, and possible modifications. Two mathematical models and their …

Understanding sludge rheology and optimizing equipment performance is crucial for energy efficiency in wastewater treatment plants (WWTPs). This study examined sludge rheology after thermal hydrolysis pretreatment (THP) at 60, 80, and 120 ◦C for 2 h, followed by anaerobic digestion (AD) at 37 ◦C for …

Problems of energy security, diversification of energy sources, and improvement of technologies (including alternatives) for obtaining motor fuels have become a priority of science and practice today. Many scientists devote their scientific research to the problems of obtaining effective brands of alternative …

Background: Aerobic (VT1) and anaerobic threshold (VT2) detection requires either expensive gas analysis machines or difficult practise. A company named StepUp Air who have created a wearable Breathing Rate (BR) and Heart Rate (HR) monitor could potentially provide a cheaper solution in. Objective: …

Previous research shows that power training can increase power output in older adults and may also improve physical performance, physical functioning, and independence. However, power training interventions have not been optimized for older adults. The aim of this study was to assess the feasibility …