Peer-reviewed articles 17,970 +


Lilita Abele; Martins Tidens
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
The European Union (EU) is hurrying towards a climate-neutral economy, which includes increasing the use of renewable resources, including wood for heating. This direction means that the use of wood is increasing every year in the EU and beyond. The by-product of this activity, biofuel ash, is correspondingly increasing, so its further use should be considered a long-term issue.
Energy producers face the challenge of making the best use of ash and often landfill it, thus moving countries further away from the EU Directive target. EU Directive 1999/31/EC and the National Waste Management Plan 2021-2028 require the amount of municipal waste landfilled (% of municipal waste generated) in 2035 will not exceed 10%. Otherwise, EU countries may face significant penalties.
The energy produced from renewable energy sources (RES) In 2019, the total consumption of renewable energy sources (RES) in Latvia was 75.5 petajoules (PJ), according to the Central Statistical Office (CSO). In the five years 2015-2019, RES consumption increased by 16.7%. The decrease in RES consumption in 2019 was driven by a decrease in hydropower (HPP) generation, due to lower rainfall than in 2018. The main types of RES in Latvia are fuel wood (firewood, wood residues, fuel wood chips, wood briquettes, and wood pellets) and hydropower. Since 2010, the use of wood fuels for heat supply in Latvia has been increasing rapidly. Increasing the consumption of domestic energy sources reduces energy dependence on imported energy sources from 63.9% in 2005 to 44.3% in 2018. Fuel wood accounts for 82% of RES energy consumption. The share of fuel wood in total RES consumption was 82% in 2019 (80.7% in 2018). Biogas (landfill gas, sewage sludge gas, other biogas) consumption in 2019 was 3.4 PJ, 7.3% less than in 2018 (3.6 PJ), with a decrease of 8.1% or 0.3 PJ over the five years.
The study aims to help solve the problems of district heating companies by preventing waste generation and reducing the costs for companies in its disposal. In addition, it can reduce, albeit slightly, the tariffs of heating users for the heat supplied.
[1] Antonkiewicz, J. Use incineration ash for binding heavy metals in soils. Environ. Protec. Nat. Resour. 2009, 41, 398–405.
[2] Ciesielczuk, T.; Kusza, G.; Nems, A. Fertilization with biomass ashes as a source of trace elements for soils. Environ. Protect. Nat. Res. 2011, 49, 219–227.
[3] Hawrot-Paw, M.; Koniuszy, A.; Mikiciuk, M.; Izwikow, M.; Stawicki, T.; Sedlak, P. Analysis of ecotoxic influence of waste from the biomass gasification process. Environ. Sci. Pollut. Res. Int. 2017, 24, 15022–15030.
[4] Kajda-Szczesniak, M. Characteristics of ashes from fireplace. Arch. Waste Manag. Environ. Protect. 2014, 16, 73–78.
[5] Lazdina Dagnija (2019), Jaunas tehnologijas izstrade augu meslosanas lidzeklu razosanai no biogazes razotnes fermentacijas atliekam – digestata un skeldas kogeneracijas atliekam – koksnes pelniem. Pieejams:
[6] Mirowski, T. Utilization of biomass for energy purpose versus reduction of emission of air pollutants from municipal and households sector. Rocz. Ochr. Sr. 2016, 18, 466– 477.
[7] Schiemenz, K.; Eichler-Lobermann, B. Biomass ashes and their phosphorus fertilizing effect on different crops. Nutr. Cycl. Agroecosyst. 2010, 87, 471–482.
[8] Sornek, K.; Filipowicz, M.; Rzepka, K. Study of clean combustion of wood in a stove-fireplace with accumulation. J. Energy Inst. 2017, 90, 613–623.
[9] Stolarski, M.J.; Krzyzaniak, M.; Warminski, K.; Tworkowski, J.; Szczukowski, S. Willow biomass energy generation efficiency and greenhouse gas reduction potential. Pol. J. Environ. Stud. 2015, 24, 2627–2640.
[10] Zajac, G., Szyszlak-Barglowicz, J., Golebiowski, W., & Szczepanik, M. (2018). Chemical characteristics of biomass ashes. Energies, 11(11), 2885.
The article was written with the financial support of the project “Promotion of research, innovation and international cooperation in science at Liepaja University”, Project No.
Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 06-08 December, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
06-08 December, 2022
waste management, green design, circular economy, wood chips, fertilizer

24th SGEM International Conference on Earth & Planetary Sciences

International GeoConference SGEM2024
28 June - 8 July, 2024 / Albena, Bulgaria

Read More

SGEM Vienna GREEN "Green Science for Green Life"

Extended Scientific Sessions SGEM Vienna GREEN
25 - 29 November, 2024 / Vienna, Austria

Read More

A scientific platform for Art-Inspired Scientists!

The Magical World Where Science meets Art
Vienna, Austria

Read More