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Energy is the ability to perform work. This general definition is part of the basic definition of modern physics, in the part that should answer the question about the cause and origin of natural action phenomena, action and power. However, in the ecological point energy is distributed according to her sources, including: conventional and non-conventional sources and in order to provide sufficient power to man for its proper life. It should be noted that the problem of providing sufficient energy to the people on the planet is a huge problem which is pushing humanity. From the producer and the product is required energy efficiency and less energy consumption per unit of product.

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Geochemical ecology is the study of the dependence of the places of residence life, environmental conditions and the conditions of existence, of the interaction of organisms and their communities with the geochemical environment in the biosphere as a unified system of organisms and the environment.

The technological process for the production of bluestone consists of three phases: the melting of waste copper in stationary flame furnaces, the granulate dissolution with sulfuric acid in the presence of the stock solvent of copper sulphate and hydrogen peroxide, and the crystallization of copper sulphate from a saturated blue stone solution in natural baths for crystallization. This paper describes the production of bluestone using hydrogen peroxide as an oxidation agent in a mixture of sulfuric acid and a stock solution of copper sulphate as well as the statistical description and graphic representation of the dissipation of copper Cu in (%), lead Pb in (%) and nickel Ni in (%) in the production of copper sulphate. On the basis of the statistical analysis, the value of copper Cu in (%) ranged from 70.3 to 99.78%, with an arithmetic mean of 91.88800%, which shows that the value of copper only in point 4 was below 80%.

Palladium(II) complexes (1-4) of general formula [PdCl2(R2-S,S-eddp)] with bidentate N,N’-ligands, O,O'-dialkyl esters (R = ethyl, n-propyl, n-butyl and n-pentyl), of (S,S)-ethylenediamine-N,N’-di-2-(4-methyl)pentanoic acid (S,S-eddp) were prepared and characterized by microanalysis, infrared and UV/VIS spectroscopy. The ligands and its complexes were tested for their in vitro antimicrobial activity against 15 species of bacteria and fungi. Testing is performed by the microdilution method, with the minimum inhibitory concentration (MIC) and the minimum microbicidal concentration (MMC) being determined. The MIC values were in range from 4.9 μg cm-3 to > 5000 μg cm-3 while MMC values ranged from 78 μg cm-3 to > 5000 μg cm-3. Palladium(II) complexes [PdCl2(Ln)] (n = 1-4) have statistically significant higher activity than the corresponding ligands. The complex 4 displayed the strongest activity among all tested compounds