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Waste release from meat processing

Wzorek Z., Konopka M., Cholewa J., Klamecki G., Bajcer T.

Polish Journal of Chemical Technology

2007

Vol. 9, nr 3

91-94

The aim of our work is model solution management of waste from meat industry, which would lead to zero waste production with the use of cleaner technology. The process will allow to obtain semi-finished products to be then reused for both meat industry and energy recovery. The model will include thermal utilization of meat, meat-bone and other meat industry waste. The ashes with strictly specified properties containing phosphorus components will be used as a potential raw material for the production of phosphoric acid and salts used in meat production. The new technology is going to be developed in one of the biggest meat factories in Poland - DUDA-BIS in Sosnowiec. The strategic aim of the factory is meat processing with zero waste. That would help to avoid problems with meat waste transport and the expensive utilization of waste to meat-bone meal. The reuse of suitably processed meat waste in meat production will permit to lower production costs. This model will satisfy the requirements of BATNEEC - Best Available Technology No Entailing Excessive Costs. This procedure is advantageous also because in the EU market there are 18 million tons of meat by-products per year. Regardless of how the utilization problems could be solved, suitably processed meat industry waste can be treated as a potential substitute for phosphoric raw materials. According to the forecast, 50% of phosphoric raw material deposits used at the moment will be exhausted in the next 60 - 70 years. As a result a necessity for a new source of the raw materials has arisen.

Chromium leaching from mine fillings containing chromium mud

Nowak A. K., Kowalski Z., Wzorek Z., Klamecki G., Gorazda K.

Polish Journal of Chemical Technology

2004

Vol. 6, nr 3

33-35

The aim of the investigations was to use the after flotation waste stored at The Coal-mining Plant Trzebionka S.A. and chromic mud from The Chemical Plant Alwernia S.A. for the production of self-solidification fillings which can be used for filling the mine voids. It was admitted that the fundamental index of potential utilization is the possibility of chromium compounds leaching from the filling material. The investigated components meet the prescribed compression strength standards. Chromium concentration in the analysed water extracts exceeded allowable concentrations which were established as 0.5 mg/dm3 for Cr(III) and 0,2 mg/dm3 for Cr(VI)4.