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In Poland, like in many other countries, research is conducted toward creating sorbent materials based on fly ashes. The present shows the synthesis of fly ash from brown coal combustion in pulverised-fuel boilers of the Be?chat?w Power Plant. The synthesis was conducted in an autoclave using the hydrothermal method with alkaline activation. The conditions for the synthesis were: temperature of 170°C, NaOH aqueous solution. The chemical composition of the fly ash as well as the products of the synthesis was determ...

The demand for rare earth elements (REEs) in the global economy has incentivised many researchers to search for alternative sources of those metals. For many years fly ashes have been the subject of such research, which indicate that they might be fit for REE recovery. One of the primary problems with recovering those metals from fly ashes faced by process engineers is the form in which they occur. As research shows, REEs occur in fly ashes in the glass and other mineral components (e.g. monazite, xenotime and oth...

The Power Plant Ostroleka is one of many in Poland, which is coal-fired. Fly ash, as is well known, are combustion by-products, which are mineral residue from burning coal. Their phase composition depends mainly on the quality of fuel (coal) and combustion conditions. In the mineral composition of the examined ashes one has identified minerals such as: glass, quartz, mullite, spinels, hematite. Spinels present in the fly ash can be a source of some metals, and due to the magnetic properties of some of them, are ea...

The article presents practical problems related to the application of REACH and LCA standards in the construction sector. Chemicals are an essential factor in assessing and managing of all kinds of risk due to their importance as components of materials and their various effects, such as: adverse and beneficial, biophysical and socio-economic. The process of reducing of adverse environmental impact of construction sector on the environment is a subject of increasing attention of scientists and companies. It should...