groundwater

The absorption of air oxygen by water in the horizontal absorber with bucket-shaped dispersants (HABD) and the vertical apparatus with a continuous bubbling layer (VABL) was studied. It is shown that these processes occur according to the law of First-Order Reactions. It was found that the constant absorption rate is 46.5 times higher in HABD than in VABL at a gas content of 0.05 and a bubble diameter of 0.002 m. It is recommended to use the VABL device for water deironing at pH <6, and for pH greater than 6.0 - HABD.

The accumulation of highly mineralized waters and brines in the mining-industrial regions of Ukraine carry a threat of salt pollution of underground and surface water sources. Low-waste processing of these waters is prevented by iron compounds, hydrogen sulfide and sulfur-containing organic compounds. The process of accumulation of iron compounds in brines and groundwater in the presence of hydrogen sulfide has been studied. Comparative calculations of the thermodynamic potentials of the corresponding reactions have been carried out.

The life path and the range of scientific interests of Professor Tamerlane Safranov are described. The main results of the scientific research in the field of organic geochemistry, hydrogeochemistry, environmentology, optimization of nature management and environmental education are presented.

The oxidation rate of ferrum(II) to ferrum(III) by air oxygen in water has been investigated in the horizontal absorber with bucket-like dispersers. The reaction order relative to Fe2+ and –OH ions has been determined based on established dependencies of ferrum(II) ions concentration on dispersion time at their various initial concentrations and medium pH. It has been shown for the first time that at pH = 5.5–6.2 in water during oxidation of ferrum(II) ions an autocatalysis occurs due to the formed ferrum(III) ions.