Speaker
Description
Abstract: Reducing GHG emissions and improving waste management are key challenges for every industry. This abstract presents a practical example of GHG reduction through industrial symbiosis between ALKALOID AD Skopje1 and Elektro Sharri – Veze Sharri Group, Tetovo2.
Since 2024, ALKALOID has supplied plant-based tea production waste to Elektro Sharri’s biogas cogeneration plant, where it is used as feedstock which by anaerobic digestion process is converted to renewable energy instead of being landfilled.
Over the period 2024–2025, the diversion of 13.07 tons of organic waste resulted in the avoidance of approximately 24.8 [t] of CO₂ equivalent emissions, including a significant reduction of methane that would otherwise be generated in landfill conditions3,4,5. At the same time, this waste contributed to the generation of approximately 3.4 [MW] of renewable electricity, supporting low‑carbon energy production7,8,9.
Keywords: biological waste, anaerobic digestion process, biogas-methane cogeneration plant
References:
1 Alkaloid AD Skopje. Official Website. www.alkaloid.com.mk (accessed June 12, 2026)
2 Veze Sharri. Sustainability. www.vezesharri.com/sustainability(accessed June 12, 2026)
3 Intergovernmental Panel on Climate Change (IPCC). Waste Management. www.ipcc.ch/site/assets/uploads/2018/03/5_Waste-1.pdf (accessed June 12, 2026).
4 U.S. Environmental Protection Agency (EPA). Quantifying Methane Emissions from Landfilled Food Waste.www.epa.gov/land-research/quantifying-methane-emissions-landfilled-food-waste (accessed June 12, 2026).
5 Nature. Methane Emissions from Landfills Differentially Underestimated Worldwide.www.nature.com/articles/s41893-024-01307-9 (accessed June 12, 2026).
6 Prognos AG. Methane Emissions from Europe’s Landfills. www.prognos.com/sites/default/files/2026-03/prognos_study_methane_emissions_from_europes_landfills%20%282%29.pdf (accessed June 12, 2026).
7 International Energy Agency (IEA). Average Biogas Production Yield by Tonne of Feedstock Type. www.iea.org/data-and-statistics/charts/average-biogas-production-yield-by-tonne-of-feedstock-type (accessed June 12, 2026)
8 GreenGas Inc. Biogas Electricity Generator. www.greengasinc.com/energy/biogas-electricity-generator/(accessed June 12, 2026).
9 Energypedia. Electricity Generation from Biogas. www.energypedia.info/wiki/Electricity_Generation_from_Biogas (accessed June 12, 2026)