The results of a research related to the physico - chemical properties of the mixture of bone - waste and their ingredients have been presented. The mixtures was made up from waste: bovine bones, pork bones, bone sludge and bone meal. The content of the individual waste in the mixtures was selected on the basis of the heat of the combustion of the mixture and the amount of the waste produced in a meat processing plant. The heat of the combustion has been determined by the calorimeter, the content of phosphorus by spectrophotometric method, calcium by titration and phase composition by X - ray diffraction.
The investigations confirmed that pork bones have the highest heat of the combustion 17 MJ/kg because of a big amount of fats. The analyzed waste has contained on average 16.5 wt % phosphorus and above 30 wt % calcium. X - ray diffraction method has proved that in bone waste one phase - hydroxyapatite occurs.
Karcz, H. & Kozakiewicz, A. (2007). The way of thermal utilization of animal waste. Energetyka i Ekologia, 11, 823-829 (in Polish).
Karcz, H. Thermal utilization of Animals waste. (2005). Energetyka i Ekologia, 3, 173-181 (in Polish).
Regulation of the Minister of Economy, Labour and Social Policy of 22 December 2003 amending the Regulation on the requirements for the process of thermal conversion of waste, Dz. U. z 2004 Nr 1, poz. 2 (in Polish).
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.