Nauris Eglitis
Research Subjects
Research Interests
Nauris Eglitis has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Andris Backurs
Faculty of Engineering and Information Technologies , Latvia University of Life Sciences and Technologies , 2 Liela Str. , Jelgava Latvia
1 shared publication - Davids Kronkalns
Faculty of Computer Science, Information Technology and Energy, Riga Technical University, 12-1 Azenes Str., LV-1048 Riga, Latvia
1 shared publication - Laila Zemite
Institute of Industrial Electronics, Electrical Engineering and Energy, Riga Technical University, Faculty of Electrical and Environmental Engineering, Riga, Latvia
1 shared publication - Leo Jansons
Faculty of Civil and Mechanical Engineering, Riga Technical University, 6A Kipsala Street, LV-1048 Riga, Latvia
1 shared publication - Patrick Cnubben
Hydrogen Architects, 9728 RJ Groningen, The Netherlands
1 shared publication - Sanda Geipele
Riga Technical University , Riga , Latvia
1 shared publication
Latest Publications
- Open Access
- 20 June 2025
- Published by MDPI AG in Sustainability
- Vol. 17 (13) , 5691
Development of an Innovative Landfill Gas Purification System in Latvia
The management of municipal solid waste remains a critical environmental and energy challenge across the European Union (EU), where a significant portion of waste still ends up in landfills, generating landfill gas (LFG) rich in methane and harmful impurities. In Latvia, despite national strategies to enhance circularity, untreated LFG is underutilized due to inadequate purification infrastructure, particularly in meeting biomethane standards. This study addressed this gap by proposing and evaluating an innovative, multistep LFG purification system tailored to Latvian conditions, with the aim of enabling the broader use of LFG for energy cogeneration and potentially biomethane injection. The research objective was to design, describe, and preliminarily assess a pilot-scale LFG purification prototype suitable for deployment at Latvia’s largest landfill facility—Landfill A. The methodological approach combined chemical composition analysis of LFG, technical site assessments, and engineering modelling of a five-step purification system, including desulfurization, cooling and moisture removal, siloxane filtration, pumping stabilization, and activated carbon treatment. The system was designed for a nominal gas flow rate of 1500 m3/h and developed with modular scalability in mind. The results showed that raw LFG from Landfill A contains high concentrations of hydrogen sulfide, siloxanes, and volatile organic compounds (VOCs), far exceeding permissible thresholds for biomethane applications. The designed prototype demonstrated the technical feasibility of reducing hydrogen sulfide (H2S) concentrations to 3 and siloxanes to ≤0.3 mg/m3, thus aligning the purified gas with EU biomethane quality requirements. Infrastructure assessments confirmed that existing electricity, water, and sewage capacities at Landfill A are sufficient to support the system’s operation. The implications of this research suggest that properly engineered LFG purification systems can transform landfills from passive waste sinks into active energy resources, aligning with the EU Green Deal goals and enhancing local energy resilience. It is recommended that further validation be carried out through long-term pilot operation, economic analysis of gas recovery profitability, and adaptation of the system for integration with national gas grids. The prototype provides a transferable model for other Baltic and Eastern European contexts, where LFG remains an underexploited asset for sustainable energy transitions.
- 20 June 2025
- Published by MDPI AG in Sustainability
- Vol. 17 (13) , 5691
Open AccessDevelopment of an Innovative Landfill Gas Purification System in Latvia
The management of municipal solid waste remains a critical environmental and energy challenge across the European Union (EU), where a significant portion of waste still ends up in landfills, generating landfill gas (LFG) rich in methane and harmful impurities. In Latvia, despite national strategies to enhance circularity, untreated LFG is underutilized due to inadequate purification infrastructure, particularly in meeting biomethane standards. This study addressed this gap by proposing and evaluating an innovative, multistep LFG purification system tailored to Latvian conditions, with the aim of enabling the broader use of LFG for energy cogeneration and potentially biomethane injection. The research objective was to design, describe, and preliminarily assess a pilot-scale LFG purification prototype suitable for deployment at Latvia’s largest landfill facility—Landfill A. The methodological approach combined chemical composition analysis of LFG, technical site assessments, and engineering modelling of a five-step purification system, including desulfurization, cooling and moisture removal, siloxane filtration, pumping stabilization, and activated carbon treatment. The system was designed for a nominal gas flow rate of 1500 m3/h and developed with modular scalability in mind. The results showed that raw LFG from Landfill A contains high concentrations of hydrogen sulfide, siloxanes, and volatile organic compounds (VOCs), far exceeding permissible thresholds for biomethane applications. The designed prototype demonstrated the technical feasibility of reducing hydrogen sulfide (H2S) concentrations to 3 and siloxanes to ≤0.3 mg/m3, thus aligning the purified gas with EU biomethane quality requirements. Infrastructure assessments confirmed that existing electricity, water, and sewage capacities at Landfill A are sufficient to support the system’s operation. The implications of this research suggest that properly engineered LFG purification systems can transform landfills from passive waste sinks into active energy resources, aligning with the EU Green Deal goals and enhancing local energy resilience. It is recommended that further validation be carried out through long-term pilot operation, economic analysis of gas recovery profitability, and adaptation of the system for integration with national gas grids. The prototype provides a transferable model for other Baltic and Eastern European contexts, where LFG remains an underexploited asset for sustainable energy transitions.