Problem of decreasing resources of phosphate rock for phosphorus fertilizers production, can be mitigated by biological degradation of low quality substrates, performed by bacterial species able to produce mineral and low molecular organic acids. It was found that Bacillus megaterium was able to solubilize phosphorus incorporated with organic matter-biogenic apatite-bones. Using the microbial treatment (by acids produced by microorganisms) it was possible to produce liquid phosphorus fertilizers. At the same time the problem with utilization of noxious wastes can be solved. Two materials were used: bones and phosphorite. Two times higher solubilization factor for bones were achieved when compare to phosphorite. It was possible to obtain the organic liquid fertilizer with the content of P 2 O 5 0.09 % (m/m). It is necessary to evaluate the utilitarian properties of obtained fertilizer in the germination test.
This paper presents the results of an analysis of the influence of the addition of various types of carbon
nanoparticles on selected essential physical and operational properties of lubricating oils. Two selected oils,
i.e. the mineral base oil without additives and the typical marine lubricating circulating oil Marinol RG 1240,
were modified with the addition of shungite nanoparticles, graphite nanotubes, and C60 fullerenes. The mass
fraction of modifiers was 0.2% wt for each of the additives. As part of the experimental tests, measurements
were made of the impact of the above-mentioned modifiers on the change in the value of the ignition
temperature of oils, the effect on the changes in the value of the dynamic viscosity coefficient in the aspect of
changes of temperature and shear rate, as well as the impact on the changes in the friction coefficient and the
size of the wear size scar. These tests were carried out on an EraFlash automatic apparatus for determining
ignition temperature using the closed cup method, with a Haake Mars III research rheometer, and a T-02U
tribometer with a four-ball head.
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