Measurement of acceleration of vibrations for the evaluation of rolling bearings wear was used in this study. A dependence between the direction of the force and the value of acceleration of rolling bearing vibrations for different measuring planes was determined. The biggest acceleration values occur according to the force direction and the smallest in the direction of the bearing axis. However, in the course of the curve, an extremum occurs, what exludes the application of acceleration of vibrations as the basic diagnostic parameter.
The recommended process conditions and problems reported during anaerobic (co-)fermentation of waste biomass rich in proteins are discussed. Theoretical potentials of the individual biogas components (CH₄, CO₂, NH₃, H₂S) formed during chemical decomposition of aminoacids – feed additives commonly used in feeding animals – are shown, and we discuss side production of odors, e.g., ammonia and organic sulphur compounds. We also suggest the potential alternative production of biohydrogen (a future energy carrier) from specific waste biomass with high protein content.
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