The role of the oxidation processes in toxigenization of the nature water after the public utility accident
L.N. Shishkina, A.Yu. Povkh, V.O. Shvydkiy
Section: Ecotoxicology
As known, the lipid peroxidation processes play an important role in regulation of the metabolism in the biological system of varying complexity. Besides, it is shown that the state of the physicochemical regulatory system of the lipid peroxidation is a base for the ecological monitoring, and the disruptions in the redox-state of the natural water is due to a development of its toxic properties. However, the status of lipid peroxidation process after the public utility accident is poorly studied. The aim of this work was to study dynamics of the lipid composition and its physicochemical properties in samples of the Dubna River water after the accident with sewer in Verbilki (June 2020) to assess their role in toxigenization of the nature water. The low content of hydrophobic compounds and no phospholipids identified in the natural water before the accident. Five days after the accident, the content of the hydrophobic compound was 8.4 times higher than the initial value. Within 9 days after the accident, the phospholipids in water samples are predominantly in the easily oxidizable fractions. These data are confirmed by UV-spectrophotometry and TLC methods. The data obtained and the literature analysis allow us to conclude that a significant increase in the content of hydrophobic compounds (including ketodienes and fat acids) with pronounced toxic properties and lytic effect on biological membranes causes
toxigenization of natural water.
Article published in number 1 for 2024 DOI: 10.25750/1995-4301-2024-1-141-149
Views: 2
Self-purification of atmospheric air from dust particles in a coastal marine climate
L.V. Veremchuk, T.I. Vitkina, L.S Barskova
Section: Ecology and climate change
The intensity of air pollution depends on the characteristics of pollution sources, distance from the sea, terrain, density of residential buildings and the presence of a green zone. The influence of climatic conditions on the distribution of suspended particulate matter in the atmospheric surface layer of Vladivostok was studied. The aim of the study was to determine the particle size distribution of suspended particulate matter in the atmospheric surface layer and to assess the conditions for self-purification of urban air under the influence of the coastal maritime climate. The assessment of the urban air pollution with suspended particulate matter was carried out in two areas with different levels of pollution. The human breathing zone was examined. The temperature, humidity, air pressure, wind direction and speed at sampling points were determined. We used monitoring of meteorological data (dew point, wind gusts, clouds, fog) from the nearest regional meteorological stations. Statistical processing included the “Canonical Analysis” module. In the polluted area of the city the atmospheric circulation (direction, speed and gusts of wind) greatly affect the distribution of fine-dispersed
particles (2.5–10.0 µm) that are hazardous to health. The impact of temperature and humidity conditions is reduced in power. The temperature and humidity regime, atmospheric pressure, cloudiness with frequent fog affect the ultrafine dust spectrum in the slightly polluted island area of the city. The above factors contribute to the enhancement of the nanoparticle nucleation process. Self-purification of the air surface layer from dust particles in both polluted and slightly polluted areas of Vladivostok is associated with the southerly winds. The monsoon maritime climate defines the air purifying in the region. The temperature and humidity regime actively affects the dust disperse composition in both sampling sites. In the island area of the city it determines the content of particles up to 10 µm; in the continental area – fractions of 0.1–50.0 µm.
Keywords: dust particles, air surface layer, monsoon climate, self-purification of the atmosphere
Article published in number 1 for 2024 DOI: 10.25750/1995-4301-2024-1-199-208
Views: 3
Zoning factors and their influence on the lakes’ zooplankton in the Middle Volga Region (Russia)
We analyzed the results of studies of 176 different types of lakes in the Middle Volga region (Russia). The impact of various environmental factors (morphometric parameters of lakes, physical and chemical indicators of water) on the lakes’ zooplankton communities of two landscape-geographical zones (forest and forest-steppe) was studied. The aim of the work was to identify the biodiversity of pelagic zooplankton and to assess the role of environmental factors in the development of zooplankton communities. Statistical studies included the calculation of the Spearman and Pearson correlation coefficients, data analysis using linear and logistic regression methods. We identify
230 species of zooplankton, including Rotifera – 107 (45.6%), Cladocera – 76 (33.6%), Copepoda – 47 (20.8%). Forest lakes show more species in the sample and higher quantitative indices compared to the forest-steppe lakes. The values of these indicators are determined by a complex of factors, the most important of which are the morphometric parameters of the lakes, the content of mineral nitrogen, oxygen, water mineralization and its determining ions. The depth of the reservoir can increase in the number of species in the sample or decrease them. Zooplankton quantification decreases as maximum depth increases. In deep-water lakes they are usually lower than in wellwarmed high-trophic and shallow ones. High mineralization and higher content of nutrients reduce the number of species in the sample and quantitative indicators of zooplankton. The increase in mineral nitrogen concentration and average ranking index is negatively related to zooplankton abundance, which is due to the occurrence of negative effects associated with anthropogenic eutrophication. Local conditions determine the composition and structure of zooplankton communities within the landscape-climatic zones, which determine the ionic composition of water and the concentration of major ions.
Keywords: zooplankton, biodiversity, lake, Middle Volga region, community, structure
Article published in number 1 for 2024 DOI: 10.25750/1995-4301-2024-1-166-174
Views: 10
Features of creating systems for automatic control of pollutants from stationary sources of emission
Section: Methodology and research methods. Models and forecasts
At the present stage of industrial development, there is a tendency to strengthen environmental control over objects that have a negative impact on the environment (NIE). Enterprises of heat and power, ferrous and non-ferrous metallurgy, oil and gas processing, chemical and petrochemical industries cause the greatest harm to the environment by emitting mainly sulfur dioxide, carbon monoxide, nitrogen dioxide, hydrocarbons, suspended solids into the atmosphere.
In order to control the quantity of emitted pollutants at the legislative level it is mandatory to equip stationary emission sources of the 1st category objects of NIE with continuous automatic control systems (SAC). The implementation of the SAC is relevant due to the currently limited number of enterprises with SAC.
The aim of the study is to consider the features of the creation SAC of stationary sources of emissions, their composition, functional purpose and implementation in industrial enterprises.
Keywords: automatic control system, environment, atmospheric air pollution, emissions, industrial enterprises
Article published in number 4 for 2023 DOI: 10.25750/1995-4301-2023-4-035-043
Views: 37
Complex ecological monitoring of negative impact of oil-containing waste in areas of oil fields as an object of ecological risk
A.V. Vasilyev
Section: Monitoring of natural and anthropogenically disturbed areas
In this paper peculiarities of negative impact of oil-containing waste to humans and biosphere and approaches to its estimation are considered. For the estimation of ecological risks of negative impact of oil-containing waste in areas of oil and gas fields it is suggested to take into account not only its toxicological and quantitative characteristics, but also the degradation of the territories of fields, potential recultivating capacity of fields, suitability of wastes for utilization etc. Negative ecological impact not only from operation but also from mothballed oil well should be investigated. Results of complex experimental researches of negative impact of oil-containing waste in regions of development and exploitation of oil and gas fields are described. In number of cases increased values of oil containing waste and heavy metals were determined in soil and in water environment. For oil wells of Mogutovskoye field acute toxicity of soil samples near to the wells and excess over maximum permissible concentrations of methane were determined. Results of monitoring of toxicological impact of oil containing waste in areas of different oil fields of Samara region and in oil treatment plants by using of biological testing methods have showed that a number of samples have enlarged toxicity and are causing acute toxic effect to the test-organisms – green algae Chlorella vulgaris Beijer and Scenedesmus quadricauda (Turpin) Brébisson, crustaceans Daphnia magna Straus. In number of cases increased values of oil products was observed. Thus, it was determined that negative impact of oil-containing waste in areas of oil fields is complex in nature and may cause significant ecological risks for air, water and soil. Results of work allow us to carry out more efficient and high quality monitoring of negative impact of oil-containing waste and estimation of ecological risks as well as to develop the measures for reduction of negative impact of oil-containing waste.
Article published in number 4 for 2023 DOI: 10.25750/1995-4301-2023-4-078-084
Views: 22
Assessment of the possibility of using solid waste compost for growing medicinal plants
T.S. Droganova, L.V. Polikarpova, M.A. Sevostyanov, A.А. Mazurkevich
Section: Agroecology
The production of artificial soils – products of solid-phase fermentation of municipal solid waste – is one of the main areas of processing waste from megacities containing organic substances and is a “green” alternative to their incineration or burial. The possibility of using products of solid-phase fermentation of waste for growing medicinal plants was studied using the examples of mountain savory (Satureja montana L.), common basil (Ocimum basilikum L.), marshmallow (Althaea officinalis L.), oregano (Origanum vulgare L.). It was revealed that the optimal germination of plants occurs on
the artificial soils “Klasmann Substrates Select” and “Grunt ECO” and it is comparable to the control soil of field crop rotation.The changes in the biochemical parameters of plants (enzyme activity, chlorophyll content) grown on soils under normal conditions, under the influence of heavy metals and at low temperatures are shown. High chlorophyll content was noted in all studied plants, however, in mountain savory grown on the “Veltorf” substrate, destructive phenomena were revealed, expressed in a decrease in the content of chlorophyll a with a simultaneous increase in the content of chlorophyll b. The activity of catalase and acid phosphatase enzymes in the studied plants is within normal limits. The effect of
unfavorable factors – low temperature and heavy metals – leads to an increase in enzyme activity, which is a sign of the formation of adaptation. When assessing the germination of plants of various species and their biochemical parameters, it was found that the domestic soil of the Grunt ECO company is optimal for growing medicinal plants and can be used for medicinal plant growing purposes.
Article published in number 4 for 2023 DOI: 10.25750/1995-4301-2023-4-157-164
Views: 27
Environmental safety through the prism of legal regulation of renewable energy in Russia
E.S. Koshcheeva, M.A. Smirnov
Section: Social ecology
The article is devoted to an urgent problem in the field of environmental safety – the legal regulation of renewable energy in Russia at the level of federal legislation, as well as trends in the field of program normative regulation in the context of long-term planning until 2050. The method of special normative regulation in the field of renewable energy chosen by the legislator is determined by the directions of state regulation in the area under consideration. The basis for long-term programmatic legal regulation is the combination of traditional and renewable energy, which is necessary for the country’s energy security. On the other hand, a serious problem of legal regulation has been identified: at the level of federal legislation, there is a legal gap in the issue of the relationship between the concepts of “energy resource” and “non-renewable energy sources”, which is the reason for finalizing the current legislation. The result of the study is recommendations to reflect in the legal regulation of renewable energy, which is programmatic and long-term in nature, not the principle of priority of renewable energy sources (RES), but the principle of combining traditional and renewable energy and its development, taking into account the interests of the country’s energy security. Thus, the actual preservation of the priority of traditional energy and the development of energy based on renewable energy sources within the framework of regulatory long-term planning based on state support determine the main direction of developing the country’s environmental safety system for the coming decades.
Keywords: renewable energy, regulation, long-term development of RES, energy security
Article published in number 4 for 2023 DOI: 10.25750/1995-4301-2023-4-199-207
Views: 11
Rational disposal of sulfur-containing waste
N.V. Syrchina, S.G. Skugoreva, T.I. Kutyavina
Section: Agroecology
Storage of sulfur extracted from hydrocarbon raw materials in open areas (sulfur pads) leads to soil contamination of sulfur. The sulfur-soil mixture is not suitable for further chemical processing, and its separation into individual components is not economically viable. In this regard, it is sent to specialized landfills as hazard class IV waste called “soil contaminated with sulfur during the repair of sulfur storage pits, sulfur pads, sulfur pipelines”. The production of ameliorants for alkaline saline soils is one option to utilize this waste without separating it into components. The application of a finely ground sulfur-soil mixture into alkaline saline soil decreases pH and the carbonates and bicarbonates content, increases specific electrical conductivity and the phosphorus and potassium mobility, as well as leads to the
active displacement of Na+ cations from the soil absorption complex into the solution. The ions transition from the soil absorption complex into solution considerably facilitates the removal of excess salts from the soil by washing. The main effect of sulfur-soil mixture application is during the first three weeks after applying the ameliorant. It depends on the amount of sulfur applied to the soil. The introduction of technology for processing sulfur-soil mixtures into ameliorants will minimize the amount of sulfur-containing waste stored in landfills and bring to the market a budget-friendly, natural
and effective agrochemical to restore the fertility of alkaline saline soils. The results obtained can be used as an experimental basis for the development of new processing of sulfur-soil mixtures into marketable products.
The composition and taxonomic structure of the phylum Actinobacteria were studied on the example of technosols formed on the territory of the former tailings of liquid waste of a chemical enterprise in the floodplain of the Vyatka River. The diversity of actinobacteria in soil samples taken from three spatially remote monitoring sites (SG, SU1 and SU2), differing in the complex of physico-chemical properties and the nature of the vegetation cover, was studied. The
results were compared with the background soil (BS) – alluvial soil selected on the territory of the Nurgush State Nature
Reserve. The studies were carried out using high-performance sequencing using Illumina technology and the culture
method (seeding). The culture method revealed representatives of the genera Streptomyces, Micromonospora, Streptosporangium and a number of oligospore forms in the actinobacterial complexes. The total number of actinomycetes in the samples of technosols varied from 2.4·104 to 1.8·105 CFU/g, and in the background soil was 8.5·103 CFU/g. Families of actinomycetes established by the seeding method were also detected using the amplicon sequencing of the V4 section of the 16S rRNA gene, but the molecular method made it possible to identify a number of other taxa in the studied samples, including those that do not have cultured representatives or are not yet classified. Using amplicon sequencing, it was found that representatives of the phylum Actinobacteria in samples of technogenically disturbed soils are absolute dominants in relative abundance in the total bacterial diversity. The proportion of actinobacteria in disturbed soils ranges from 33 to 41%, while in the background soil it is only 22%. Actinobacteria in the samples of technosols were represented by the families Micromonosporaceae, Micrococcaceae, Nocardioidaceae, Microbacteriaceae, Thermomonosporaceae, Pseudonocardiaceae, Actinosynnemataceae, and Intrasporangiaceae, etc. The taxonomic spectrum of actinobacteria in the BS sample was similar to technosols, but the proportion of taxa was different. The results obtained will be used in further studies of soil actinobiota in connection with changes in ecosystems disrupted by human economic activity, and are also of interest for the search and isolation of natural strains of actinobacteria for biotechnology purposes.
Keywords: chemical production waste, technosols, actinobacteria, actinomycetes, diversity, taxonomic structure
Article published in number 4 for 2023 DOI: 10.25750/1995-4301-2023-4-174-183
Pollution of the environment with petroleum products is a serious environmental problem. There are several ways to dispose of used oils: regeneration, burial and incineration. The burning of waste oils is widespread both in Russia and abroad. One of the significant disadvantages of the method is the entry of harmful substances into the atmosphere. The results of research on the development of a more advanced installation of thermal utilization of waste oils, ensuring the completeness of combustion and reduction of harmful emissions, are presented. The unit for thermal disposal of waste oils consists of a furnace and an emulsion nozzle.
The furnace from the furnace chamber and the afterburning chamber of the flue gas provides two-zone, two-stage oil gorenje. Oil is burned in the combustion chamber (1st gorenje zone with t ≈ 600–700 оC). Then the smoke enters the afterburning chamber, where it is completely burned due to the supply of additional air (2nd gorenje zone with t ≈ 1200–1300 оC), due to the increase in temperature, toxic substances contained in the smoke are transformed into harmless due to their complete oxidation.
The emulsion nozzle consists of intersecting grooves, which, when air and heated oil are fed into it, provide finely dispersed oil spraying by forming gas-liquid vortices in the oncoming grooves. Using the ANSYS program, the calculation of the flame angle of the emulsion nozzle was carried out. It is established that to change the range of the spraying torch and the use of emulsion nozzles in furnaces of different volume and power, it is necessary to change the angle of the screw direction.
This research contributes to the development of the industry of processing of production and consumption waste. The proposed solution allows the installation to be used not only in industrial centers where significant volumes of waste oils accumulate, but also in sparsely populated areas, and also ensures the completeness of combustion of oil waste and reduces the negative impact on the environment.
ISSN 1995-4301
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