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Ecology-Economical Assessment of new Reclamation Method for Currently Working Technogenic Massifs

Strizhenok A., Tcvetkov P.

Journal of Ecological Engineering

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2017

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Vol. 18, nr 1

57--63

EN

One of the most relevant problems of the mining industry is the need to reduce the negative impact of technogenic massifs formed by wastes of extraction and processing of mineral raw materials. This problem has a significant meaning for currently used massifs, because traditional ways of reclamation are not suitable for them. The article describes the results of a scientific study on the development of the most efficient reclamation method for currently used technogenic massifs. Described in detail the main results of the field observations, methods and equipment of laboratory experiments conducted to determine agro-chemical properties of the soil and optimal composition of binder agent. The article also provides ecological and economic assessment of the proposed method of reclamation. The study was conducted on the example of the real technogenic massif, formed by wastes of phosphorus ore processing.

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Ecological and Economic Efficiency of Peat Fast Pyrolysis Projects as an Alternative Source of Raw Energy Resources

Tcvetkov P., Strizhenok A.

Journal of Ecological Engineering

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2016

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Vol. 17, nr 1

56--62

EN

The objective of this review is to find ecologically and economically reasonable method of biomass processing to produce electricity and thermal energy. The major causes of the annual increase in the volume of consumed electricity and thermal energy are the current pace of scientific and technological progress, the overcrowding of cities and industrial agglomeration. Traditional energy sources (coal, oil, gas) have a significant negative impact on the environment, which leads to the deterioration of sanitary-hygienic indicators of the human environment. Besides, prices for traditional energy resources are increasing due to the decline of easy produced stocks. The goal of this article is the investigation and evaluation of environmental and economic efficiency of biomass fast pyrolysis methods for as modern energy resources. The result of the review is the choice of biomass fast pyrolysis as the most environmentally reasonable and economically viable local method of producing electricity and thermal energy in Russia. This method is more eco-friendly, compared to other alternative energy sources, for example using peat as solid fuel.

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Assessment of the State of Soil-Vegetation Complexes Exposed to Powder-Gas Emissions of Nonferrous Metallurgy Enterprises

Strizhenok A., Korelskiy D.

Journal of Ecological Engineering

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2016

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Vol. 17, nr 4

25--29

EN

Environmental monitoring and state assessment of soil and vegetation in forest ecosystems, exposed to influence of industrial pollution of the nonferrous metallurgy enterprises, was the aim of conducted research. The object of the research was the JSC „Severonikel”, where the territory of anthropogenic influence is about 1,5 thousand square kilometers. More than 100 samples of plants and upper soil horizons, which were sampled at various distances from the manufacturing entities of enterprise, including background areas, were the result of the scientific expedition. All samples were analyzed in the laboratory for heavy metals content. It allowed to determine the general degree of contamination of the soil at different distances from the enterprise and to establish the migration patterns and accumulation of heavy metals in different horizons.