Browse

The sulfide containing wastes stocked in the Ur dumps were studied in this paper. The Novo-Ursky copper-pyrite deposit, containing the polymetallic ores, was discovered in 1932 as part of the Ursky ore field, Kemerovo region. During the day, the parameters of each of the dumps change: temperature, humidity of the upper layer, geoelectric parameters, concentrations of emitted substances (gases, vapor with volatile compounds of chemical elements). This article discusses these variables in terms of an integrated appr...

Environmental protection and maintaining the ecological balance are the most important state development priorities. Environmental policy issues are closely related to the level of technological equipment of economic sectors, sustainable development of territories, social policy and are aimed at ensuring environmental safety. The expansion of the geography of oil and gas production in Russian Federation in the direction of the northern and Far Eastern territories, the development of new territories (Eastern Siberi...

The paper focused on the formation mechanisms of the geochemical soil background for a wide range of elements. Three areas in Siberia of the coal mining spoils were investigated. The spoils were recultivated 30 years ago by applying a homogenous layer of loamy bedrock as a potentially fertile substrate and then left for spontaneous revegetation. The assessment was conducted using bulk concentrations of the elements. Since there is no excess in concentrations of heavy metals and radionuclides in the recultivated sp...

Geo-electrical sections were constructed according to electrical resistivity tomography data on Shahtama tailings of Mo- ore processing plant (Transbaikal Kray, Russia), located in the permafrost zone. The capacity of technogenic deposits was determined and the zone of the fault was delineated. A wide range of electrical resistivities (ER) of mine tailings was revealed due to their different particle sizes, humidity and partially frozen condition. The statistical analysis of the distribution of resistivity of tech...

U(VI) biosorption by six natural materials: three types of peats, Polytrichium moss, EichhпїЅrnia crпїЅssipes water plant and Cladonia stellaris lichen was investigated. Natural sorbents were selected, as it is available, cheap and accessible materials. The effects of initial concentration of UO2 2- in the model radioactive solution and pH on the sorption uranyl ions were assessed. Adsorption isotherms and constants for given adsorbates and adsorbents were determined. Equilibrium is well described by Freundlich eq...

In the paper the precipitation of arsenic and iron from an acid drainage water of the Berikul mine wastes by using lime milk, NaOH, and Na2S were studied. The wastes were stored in the southern part of the Komsomolsk tailings impoundment, near the Komsomolsk settlement (Kemerovo region, Russia). The interaction of natural waters with the wastes produced ultra-acid drainage with a pH of about 2, with arsenic content of 1.3 g/l and iron - 6.5 g/l. The results of in situ experiments showed that adding lime milk and s...

On the example of waters from Komsomolsk tailings pond (Kemerovo region, Russia) with initial ??=6.5 and content of As and Sb amount to 0.25 mg/l and 0.85 mg/l, respectively, the possibility of using chemical reagents: lime milk, Na2S and FeSO4, for removal of metals and metalloids from the water right up to the maximum permissible concentrations (MPC) was shown. It was experimentally proved that all three used reagents are appropriate for arsenic immobilization. The following sequences of the reagents in increasi...