Prof. Patrick Hettiaratchi

University of Calgary, Canada

Professor

Email: [email protected]

Qualifications
Ph.D., University of Alberta

Publications (Selected)

1. Gunasekera, S., Hettiaratchi, J. P. A., & Ruwanpura, S. (2026). Dynamic modeling of methane oxidation in high-rate biofilters: a temperature-based approach for continuous performance evaluation. Modeling Earth Systems and Environment, 12(2), Article 134.
2. Abedi, T., La, H., & Hettiaratchi, J. P. A., et al. (2026). Spatial Variability in Methane Generation and Methane Oxidation Potential of Excavated Waste Residue: Implications for Landfill Gas Modeling and Waste Valorization. Journal of Hazardous, Toxic, and Radioactive Waste, 30(1), Article 04025042.
3. Jayasinghe, P., Hettiaratchi, J. P., & Munasinghage, S., et al. (2025). Landfill biocell technology for northern climates: The Calgary Biocell. In Solid Waste Management in Canada (pp. 171–189).
4. Pokhrel, D., Hettiaratchi, P., & Jayasinghe, P., et al. (2024). Key findings and lessons learned from the operation of a full-scale cold-climate landfill bioreactor for 14-years. Working Paper Series.
5. Munasinghage, S., Hettiarachchi, H., & Hettiaratchi, P., et al. (2024). Settlement analysis of Calgary landfill biocell: An anaerobic landfill bioreactor operated in cold climates for 15 years. In A&WMA’s 117th Annual Conference & Exhibition.
6. Hettiarachchi, H., Irandoost, E., & Hettiaratchi, J. P., et al. (2023). A Field-Verified model to estimate landfill methane flux using surface methane concentration measurements under calm wind conditions. Journal of Hazardous, Toxic, and Radioactive Waste, 27(4), Article 04023019.
7. Wijayasekera, S. C., Hewage, K., & Hettiaratchi, P., et al. (2023). Planning and development of waste-to-hydrogen conversion facilities: A parametric analysis. Energy, 278, Article 127850.
8. Attalage, D. S., Hettiaratchi, J. P. A., & Chu, A., et al. (2023). Impact of landfill gas exposure on vegetation in engineered landfill biocover systems implemented to minimize fugitive methane emissions from landfills. International Journal of Environmental Research and Public Health, 20(5), Article 4448.
9. Jayasinghe, P. A., Jalilzadeh, H., & Hettiaratchi, P. (2023). The impact of COVID-19 on waste infrastructure: lessons learned and opportunities for a sustainable future. International Journal of Environmental Research and Public Health, 20(5), Article 4310.
10. Wijayasekera, S. C., Hewage, K., & Hettiaratchi, P., et al. (2022). Sustainability of waste-to-hydrogen conversion pathways: a life cycle thinking-based assessment. Energy Conversion and Management, 270, Article 116218.
11. Jalilzadeh, H., Hettiaratchi, J. P. A., & Jayasinghe, P. A., et al. (2022). Calgary Biocell Case Study. In Proceedings of the Canadian Society of Civil Engineering Annual Conference.
12. Pishgar, R., Hettiaratchi, J. P., & Chu, A. (2022). Natural source zone depletion (NSZD) quantification techniques: Innovations and future directions. Sustainability, 14(12), Article 7027.
13. Abedi, T., Hettiaratchi, J. P., & Pokhrel, D. (2022). Residual Methane Generation Capacity of Waste Residue in a Landfill Bioreactor: Case Study of Calgary Biocell. In Canadian Society of Civil Engineering Annual Conference (pp. 977–997).
14. Attalage, D. S., Hettiaratchi, P. A., & Jayasinghe, P., et al. (2022). Field study on the effect of vegetation on the performance of soil methanotrophy-based engineered systems–Column experiments. Soil Biology and Biochemistry, 167, Article 108583.
15. Wijayasekera, S. C., Hewage, K., & Siddiqui, O., et al. (2022). Waste-to-hydrogen technologies: A critical review of techno-economic and socio-environmental sustainability. International Journal of Hydrogen Energy, 47(9), 5842–5870.
16. Hettiaratchi, J. P. A., Jayasinghe, P. A., & Yarandy, T. A., et al. (2021). Innovative practices to maximize resource recovery and minimize greenhouse gas emissions from landfill waste cells: Historical and recent developments. Journal of the Indian Institute of Science, 101(4), 537–556.
17. Jalilzadeh, H., Hettiaratchi, J. P. A., & Jayasinghe, P. A., et al. (2021). Characteristics of Excavated Waste from a 14-Year-Old Landfill Bioreactor: Calgary Biocell Case Study. In Canadian Society of Civil Engineering Annual Conference (pp. 395–399).
18. Pearse, L. F., Hettiaratchi, J. P. A., & Da Costa, D. (2020). A new biochemical methane potential assay for landfilled waste using the organic fraction of municipal solid waste. Bioresource Technology Reports, 12, Article 100579.
19. Jalilzadeh, H., Hettiaratchi, J. P. A., & Fleming, I., et al. (2020). Effect of soil type and vegetation on the performance of evapotranspirative landfill biocovers: Field investigations and water balance modeling. Journal of Hazardous, Toxic, and Radioactive Waste, 24(4), Article 04020046.
20. Bartholameuz, E. M., Hettiaratchi, J. P. A., & Steele, M., et al. (2020). Reaction kinetic analysis of manganese peroxidase augmented aerobic waste degradation. Journal of Hazardous, Toxic, and Radioactive Waste, 24(4), Article 04020043.

Profile Details

https://profiles.ucalgary.ca/joseph-patrick-hettiaratchi
https://scholar.google.com/citations?user=NOiLPGIAAAAJ&hl=en
https://www.researchgate.net/profile/Joseph-Hettiaratchi

WOS ResearcherID: FCE-0179-2022