References
- 1. Būmanis, K., Krasavcevs, I., Liše, S., & Stepiņa, A. (2012). Monitoring of wood biomass consumption for energy production. Research. Jelgava: MEKA, 78 pp.
- 2. Eijk, R. J., Obernberger, I., & Supancic, K. (2012). Options for increased utilization of ash from biomass combustion and co-firing. Report, KEMA Nederland B.V., Arnhem, the Netherlands, 39 pp.
- 3. Emilsson, S. (2006). From Extraction of Forest Fuels to Ash Recycling. International handbook. Swedish Forest Agency, 42 pp.
- 4. James, A. K., Thring, R. W., Helle, S., & Ghuman, H. S. (2012). Ash Management Review—Applications of Biomass Bottom Ash. Energies, 5, 3856-3873; DOI:10.3390/en5103856.
- 5. Misra, M. K., Ragland, K. W., & Baker, A. J. (1993). Wood ash composition as a function of furnace temperature. Biomass and Bioenergy Vol. 4, No. 2, 103-116.
- 6. Nunes, L.J.R., Matias, J.C.O., & Catalão J.P.S. (2016). Biomass combustion systems: A review on the physical and chemical properties of the ashes. Renewable and Sustainable Energy Reviews 53, 235–242.
- 7. Omil, B., Piñeiro, V., & Merino, A. (2007). Trace elements in soils and plants in temperate forest plantations subjected to single and multiple applications of mixed wood ash. Science of the Total Environment, 381, 157–168. DOI:10.1016/j.scitotenv.2007.04.004.
- 8. Ozolinčius, R., Varnagiryte, I., Armolaitis, K., & Karltun, E. (2005). Initial Effects of Wood Ash Fertilization on Soil, Needle and Litterfall Chemistry in a Scots Pine (Pinus sylvestris L.) Stand. Baltic Forestry, 11(2), 59–67.
- 9. Perkiömäki, J., & Fritze, H. (2005). Cadmium in upland forests after vitality fertilization with wood ash—a summary of soil microbiological studies into the potential risk of cadmium release. Biol Fertil Soils, 41, 75–84. DOI: 10.1007/s00374-004-0816-5.
- 10. Perkiomaki, J., Oili, K., Mikko, M., & Jorma, I. (2003). Cadmium-containing wood ash in a pine forest: effects on humus microflora and cadmium concentrations in mushroom, berries and needles. Canadian Journal of Forest Research, 33, 2443-2451. DOI: 10.1139/X03-169.
- 11. Pitman, R. M. (2006). Wood ash use in forestry – a revew of environmental impacts. Forestry, 79(5), 563–588. DOI:10.1093/forestry/cpl041.
- 12. Reimanna, C., Ottesena, R. T., Anderssona, M., Arnoldussenb, A., Kollerc, F., & Englmaierd, P. (2008). Element levels in birch and spruce wood ashes — green energy? Science of the total environment, 393, 191-197. DOI:10.1016/j.scitotenv.2008.01.015.
- 13. Saarsalmi, A., Mälkönen, E., & Piirainen, S. (2001). Effects of Wood Ash Fertilization on Forest Soil Chemical Properties. Silva Fennica, 35(3), 355–368. Retrieved December 2, 2014, from PubMed database on the World Wide Web: http://dx.doi.org/10.14214/sf.590.
- 14. Saarsalmi, A., Smolander, A., Moilanen, M., & Kukkola, M. (2014). Wood ash in boreal, low-productive pine stands on upland and peatland sites: Long-term effects on stand growth and soil properties. Forest Ecology and Management, 327, 86–95. DOI:10.1016/j.foreco.2014.04.031.
- 15. Saqib, N., & Bäckström, M. (2014). Trace element partitioning in ashes from boilers firing pure wood or mixtures of solid waste with respect to fuel composition, chlorine content and temperature. Waste Management, 34, 2505–2519.
- 16. Siddique, R. (2012). Utilization of wood ash in concrete manufacturing. Resources, Conservation and Recycling 67, 27–33.
- 17. Vanhanen, H., Dahl, O., & Joensuu, S. (2014). Utilization of wood ash as a road construction material - Sustainable use of wood ashes. Sustainable Environment Research 24(6), 457-465.
- 18. Vassilev, S., Baxter, D., & Vassileva, C. (2013). An overview of the behaviour of biomass during combustion: Part I. Phase-mineral transformations of organic and inorganic matter. Fuel, 112, 391–449.