Examples of WBA in a sentence
Currently, 70% of WBA is landfilled, 20% tends to be used as a soil supplement in agriculture and 10% is used for miscellaneous application [3, 7, 8].
Fly ashes (the finer ash fraction) are in most cases disposed as their heavy metal concentrations are too high for a usage as soil enhancer [32, 33]The chemical characteristics of WBA, which govern its credibility to be used as a replacement for cement or other SCMs, such as silica (SiO2), alumina (Al2O3), iron oxide (Fe2O3) and quicklime (CaO) differ significantly from one species of trees to another, Table 1.
Using WBA as a new form of raw material in the construction industry offers an interesting alternative to today's materials.
As a consequence, the Scientific Advisory Board on Agricultural Policy, Food and Consumer Health Protection at the Federal Ministry of Food and Agriculture in Germany (WBA, 2015) established nine guidelines to ensure prospective animal husbandry practices, accepted by the majority of society.Against this background, the aim of this paper is to present the importance of different husbandry aspects by German citizens, based on seven of the guidelines.
The characteristics of WBA may differ and chiefly depend on:(1) tree species – type and source of wood(2) combustion technology (especially combustion temperature)(3) and the location where collection of ash is done [3].Among the technologies available for power and heat production, biomass combustion is a proven technology in which technologies of fluidized bed and grate furnace combustion are mainly used [28, 29, 30].