The changes of carbon and nitrogen content during the incubation of the lignite and waste activated sludges mixtures determinated in acids extracts
Symanowicz, B. | Kalembasa, S.(Akademia Podlaska, Siedlce (Poland). Katedra Gleboznawstwa i Chemii Rolniczej)
The mixtures of brown coal (lignite) and waste activated sludges were mixed at the ratio of components: 1:5, 1:2, 1:1 and were incubated for 2 and 4 months at room temperature (22 deg C). After differentiated time of incubation the samples of mixtures were hydrolized in acid conditions and in acid extracts the following forms of carbon, easily and difficultly hydrolysable and nitrogen, mineral, easily and difficultly hydrolysable were determinated. On the base of presented results it could be stated that the period of 2 months of incubation mixture 1:5 was the best for utilization
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