Evaluation of phytotoxicity of drilled rocks after roasting
2025
T.A. Gamm | E.V. Grivko | A.A. Gamm
Background. The oil-bearing rocks of the Orenburg region were selected for the study: dolomite, limestone, clay-siltstone rock, sandstone, the utilization of which is a modern environmental problem. A study was conducted on the toxicity of drilled rocks for living organisms after thermal processing. Materials and methods. The drilled rock, which together with the drilling mud and drilling wastewater, is a waste at the well construction stage, was studied by the method of delayed fluorescence for oil content and biotesting using watercress. Results. It is shown that each geological rock containing oil, depending on its structure and chemical composition, has a certain range of values of the delayed fluorescence coefficients, by which it can be identified in the composition of drill cuttings. With an increase in the oil content in the rock, the value of delayed fluorescence decreases. The standards for delayed fluorescence of drilled rocks containing and not containing oil are established, which can be used to determine the oil content in drilled rocks. Conclusions. When germinating seeds after firing on dolomite and limestone, toxic conditions are created for plants and the drilled rocks cannot be used directly as artificial soil, as well as sludge from a torch. Limestone and dolomite can be used in construction, as an ameliorant or to create artificial soil with specified properties. The most optimal is the use of clay-siltstone rock and sandstone directly for reclamation.
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