engleski

Agricultural biomass ash in civil engineering - from energy to sustainable development

Every year in the world millions of tons of harvest residues are generated, such as corn stalks and corn cob blanks, wheat, soy and rice straw, sunflowers and rice husk. Those harvest residues can be used as a replacement for fossil fuels and represent a renewable energy source. Ash, which is generated by the combustion of harvest residues, is usually deposited in landfills, causing environment pollution and potential human health risks. Such a state is a concequence of non-existent bio-ash management and the absence of pollution control. In order to promote biomass as an energy source, available quantities of agricultural biomass in Croatia and Serbia are presented. Heating power of various harvest residues is determined and compared to the heating power of standard energy sources. The possibilities of using biomass ash as waste material in the building industry are outlined. Different kind of biomass ashes can be successfully used to replace cement in mortars and concrete and have a positive influence on geotechnical properties of soil. Preliminary results of ash application suggest that these ashes exhibit the potential for use in the building industry, but due to differences in their characteristics, each of them needs to be investigated in more detail.

agricultural biomass ash, energy, civil engineering, sustainable development

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