To the Problem of Minimizing the Volume of Mobile Dust in the Development of Pits

2021 ◽  
pp. 28-33
Author(s):  
V.I. Golik ◽  
◽  
Z.A. Gashimova ◽  
M.Yu. Liskova ◽  
Ch.B. Kongar-Syuryun ◽  
...  
Keyword(s):  
Occupational Safety ◽  
Negative Impact ◽  
Raw Materials ◽  
Dust Emission ◽  
Mining Industry ◽  
Open Pit ◽  
Dust Formation ◽  
Negative Effects ◽  
Negative Effect ◽  
Living Organisms

Technogenic factors that have a negative effect on the environment and humans are analyzed. The integrated effect of negative impact on the environment aggravated by the number of factors is revealed. These factors include the following: gorges, river valleys and mountain landscapes. From the previously conducted studies it was concluded that the main source of negative effects on living organisms is the mineralized dust. The actual task of the study is determined, which consists in detailing the mechanisms and methods of the mineralized dust formation for improving the methods of minimizing its formation. Using the example of an open pit development of a dolomite deposit the relationship is established between the indicators of atmospheric dusting by the products of rock technological crushing and grinding. Dependence is established related to the dust emission intensity on the air flow velocity and dust concentration. It is proved that all the dust-like products formed as the result of mining and processing of the mineral raw materials have dimensions that allow them to move with the help of air masses. The results of the experiments on solving the problem of reducing dust by minimizing the output of mobile dust classes are presented (studies of the granulometric composition of rocks of various types with differentiation by type of the dust source, the mechanism of pollution using trapping screens and the development of directions for minimizing dusting of the atmosphere of the quarry and the surrounding area). The measures to reduce dust formation are proposed. The model for assessing the potential of environmental pollution by gas and dust products is developed. The proposed measures and the developed model will allow to minimize the effect of mining production on the environment of the region and the health of the workers of the mining enterprise and the residents of the region. The results obtained may be in demand when improving existing and developing new methods for improving occupational safety in the mining industry.

Research and Analysis of the Sources of Emission of Respirable Fraction of Dust at the Coal Mines

2021 ◽  
pp. 65-70
Author(s):  
G.I. Korshunov ◽  
◽  
A.M. Safina ◽  
A.M. Karimov ◽  
◽  
...  
Keyword(s):  
Dust Emission ◽  
Dust Content ◽  
Open Pit ◽  
Fine Dust ◽  
Mining Equipment ◽  
Length Of Service ◽  
The Road ◽  
Urgent Task ◽  
Negative Effect ◽  
Dust Load

At the deposits of the Krasnoyarsk Territory, the actual concentration of the suspended dust is 60–83 mg/m3. The search for efficient ways of reducing dust emission and dust suppression remains an urgent task, since fine dust has a negative effect on the health of enterprise employees and on mining equipment reducing its service life. Full-scale measurements were conducted related to the dust content and dispersed composition of the aerosols. The dust content was measured by counting method with the use of CEM DT-9880 dust particle counter. The measurements were conducted at the points located at different distances from the road of the section. The content of the most dangerous fraction PM2.5 was 48 % of the total amount of fine dust or 30–40 mg/m3, while the maximum permissible concentration for this fraction is 0.16 mg/m3. The employees who constantly work near the automotive haul roads and the ruins of an exploded rock mass are exposed to the strongest effects of dust emissions on the respiratory organs. To reduce the dust load on the employees of the mining enterprise, it is most appropriate to deal primarily with the dust emitted from the open pit roads, since this will help to reduce the dust load by 30–40 %. The permissible length of service for the operator of the loading equipment of one of the open-pit mines of the Krasnoyarsk Territory was calculated: it will be 9 years, and not 17, as was obtained earlier — without considering the actual content of the respirable dust. With the most rational parameters of drilling and blasting operations and using all methods to reduce dust formation, it is possible to reduce the dust emission by 15–20 %.

scholarly journals SUSTAINABLE DEVELOPMENT OF THE MINING COMPLEX OF THE MURMANSK REGION: MINIMIZATION OF MAN-MADE IMPACTS ON THE ENVIRONMENT

2021 ◽  
Vol 13 (2) ◽  
pp. 188-200
Author(s):  
Vladimir MASLOBOEV ◽  
◽  
Dmitry MAKAROV ◽  
Elena KLYUCHNIKOVA ◽  
◽  
...  
Keyword(s):  
Sustainable Development ◽  
Russian Federation ◽  
Negative Impact ◽  
Raw Materials ◽  
Mining Industry ◽  
The Arctic ◽  
Green Growth ◽  
Murmansk Region ◽  
The Russian Federation ◽  
Mining Complex

The Murmansk region is a region with the largest enterprises of the mining complex of the Russian Federation: KF JSC “Apatit”, JSC “Kola MMC”, JSC “Olkon”, JSC” Kovdorsky GOK”, JSC” North-West Phosphorus Company”, LLC”Lovozersky GOK”. They provide the majority of the country’s demand for phosphate ores, zirconium raw materials (baddeleyite), niobium, tantalum, and rare earth metals. In addition, the mining and processing of copper-nickel, iron and chrome ores, nepheline and ceramic raw materials, facing stone and building materials is carried out. At the same time, the activities of enterprises have a very negative impact on the environment. The issues of environmental safety in the extraction and processing of minerals, storage of mining waste in the Arctic zone of the Russian Federation are of particular relevance. The definition of sustainable development in relation to the mining industry is given. The concepts of available best technologies, circular economy, and “green growth” are considered from the point of view of their contribution to sustainable development. It is shown that the sustainable development of enterprises at the present stage is impossible without improving the environmental friendliness of production. The article analyzes the legislation of the Russian Federation and the practice of its application to identify mechanisms that promote sustainable development and eliminate barriers to the implementation of this concept in the mining industry. New technological solutions have been developed for mining enterprises of the Murmansk region, aimed at reducing aero-technogenic emissions, cleaning waste (mine) water, processing tailings of enrichment as man-made deposits, which allows both to minimize man-made environmental impacts and to increase the full use of mineral raw materials. Thus, the expediency of using the principles of “green growth” for the development of economic development policies in the Arctic is justified.

TOXICOLOGICAL AND BIOLOGICAL SAFETY OF ANIMAL PRODUCTS

2021 ◽  
Vol 1 (3) ◽  
pp. 244-248
Author(s):  
V.I. Dorozhkin ◽  
Keyword(s):  
Negative Impact ◽  
Raw Materials ◽  
Animal Health ◽  
Food Products ◽  
Federal State ◽  
Negative Effects ◽  
Animal Products ◽  
Biological Safety ◽  
Livestock Products ◽  
State Registration

The article presents materials on the toxicological and biological safety of livestock products: contaminants of various natures that contaminate raw materials and food products (microorganisms, viruses, mycotoxins, parasites, heavy metals, etc.) are presented. To ensure biological and toxicological safety of livestock products and public health, the implementation of legislation, as well as decisions of the President of the Russian Federation, it is proposed to provide the development of a national innovative system for protecting animal health from the negative effects of pathogens and toxicants, including: conducting research on the development of fundamental foundations for the protection of animal health from the negative impact of ecotoxicants and veterinary and sanitary welfare, improvement of regulatory and legislative documents on the organization of quality control and safety of raw materials and food products; restoration of the procedure for state registration of diagnostic test systems, disinfectants, insectoacaricides and rodenticides; creation of the State Veterinary Pharmacological and Biological «State Veterinary Pharmaceutical Commission». For the implementation of these measures, provide federal state budgetary funding.

scholarly journals Does urbanization have positive or negative effects on Crab spider (Araneae: Thomisidae) diversity?

2017 ◽  
Vol 34 ◽  
pp. 1-8 ◽  
Author(s):  
Carina Argañaraz ◽  
Raquel M. Gleiser
Keyword(s):  
Green Spaces ◽  
Negative Effects ◽  
Community Patterns ◽  
Negative Effect ◽  
Vacuum Method ◽  
Abundant Genus ◽  
Living Organisms ◽  
Crab Spider ◽  
First Time ◽  
Crab Spiders

Urbanization has a great impact on the diversity of living organisms. Spiders, for example, have been shown to respond negatively (some orb weaving species) and positively (ground dwelling species) to urbanization. The effects of urbanization on crab spiders (Thomisidae) (sit-and-wait predators that generally ambush their prey on flowers and leaves) are not sufficiently known. This paper describes the Thomisidae community that inhabits green patches in a temperate Neotropical city, Cordoba, Argentina, and its surroundings, and ascertains whether there are differences in species richness, abundance and composition between urban and exurban sites. Samples were collected from 30 sites during the summer and spring of 2013 and 2014, using the garden-vacuum method. We compared the abundance, richness and composition of Thomisidae among three habitat categories (urban, suburban and external). Seven species in three genera, Misumenops, Wechselia and Tmarus, were detected. Misumenops was the most abundant genus in Córdoba, and Tmarus elongates Mello-Leitão, 1929 was collected in Argentina for the first time. The abundance, richness and composition of thomisid spiders did not differ between habitat categories, indicating that urbanization does not have a negative effect on the communities of these spiders in open green spaces. Site variability, on the other hand, does, suggesting that local factors may be more relevant than broad-scale factors to explain community patterns in this family.

scholarly journals Seven years of experimental warming and nutrient addition causes decline of bryophytes and lichens in alpine meadow and heath communities

2014 ◽  
Author(s):  
Juha M Alatalo ◽  
Annika K Jägerbrand ◽  
Ulf Molau
Keyword(s):  
Global Change ◽  
Alpine Meadow ◽  
Negative Impact ◽  
Nutrient Addition ◽  
Negative Effects ◽  
Change Models ◽  
Alpine Regions ◽  
Negative Effect ◽  
Heath Community ◽  
Species Specific

Global change is predicted to have large and rapid impact on polar and alpine regions. Bryophytes and lichens increase their importance in terms of biomass, carbon/nutrient cycling, cover and ecosystem functioning at higher latitudes/altitudes. Here we report from a seven year factorial experiment with nutrient addition and warming on the abundance of bryophytes and lichens in an alpine meadow and heath community. Treatments had significant negative effect on relative change of total abundance bryophytes and lichens, the largest decline to the nutrient addition and the combined nutrient addition and warming treatments, bryophytes decreasing most in the meadow, lichens most in the heath. Nutrient addition, and the combined nutrient addition and warming brought rapid decrease in both bryophytes and lichens, while warming had a delayed negative impact. Of sixteen species that were included the statistical analyses, we found significant negative effects on seven species. We show that impact of simulated global change on bryophytes and lichens differ in in time and magnitude among treatments and plant communities. Our results underscore the importance of longer-term studies to improve the quality of climate change models, as short-term studies are poor predictors of longer-term responses of bryophytes and lichens, similar to what have been shown for vascular plants. Species-specific responses may differ in time, and this will likely cause changes in the dominance structures of bryophytes and lichens over time.

scholarly journals Designing for Packaging Sustainability. The Effects of Appearance and a Better Eco-Label on Consumers’ Evaluations and Choice

2019 ◽  
Vol 1 (1) ◽  
pp. 3251-3260 ◽  
Author(s):  
Sophie Krah ◽  
Tea Todorovic ◽  
Lise Magnier
Keyword(s):  
Negative Impact ◽  
Traffic Light ◽  
Negative Effects ◽  
User Perspective ◽  
Policy Makers ◽  
Negative Effect ◽  
Typical Appearance ◽  
Perceived Usability ◽  
Choice Intentions ◽  
Positive Effect

AbstractThe environmental burden of packaging is huge. However, redesigning packaging to make it more sustainable without damaging its other functions is not always easy and can have a negative impact on consumers’ choice. In this paper, we adopt a user-perspective and test the effects of packaging appearance and a better eco-label on consumers’ responses. Based on the literature, we designed an eco- label using a traffic light system with an objective sustainability score enabling to compare the sustainability of different packages. The results of our experimental study (N=120) show that while a sustainable (vs. typical) appearance in packaging has a positive effect on perceived sustainability, it has a negative effect on perceived usability. However, we demonstrate that the presence of a high score on the eco-label positively impacts the perceived sustainability of both the sustainable and the typical packages and the choice intentions. This eco-label also enabled to mitigate the negative effects of the sustainable appearance on perceived usability. Designers and policy-makers can use the results of this paper to positively influence evaluations of and choice for sustainable packaging.

Influence of mycotoxins on fish health

2018 ◽  
Vol 74 (1) ◽  
pp. 6052-2018
Author(s):  
MAREK WALCZAK ◽  
PIOTR JEDZINIAK ◽  
MICHAŁ REICHERT
Keyword(s):  
Negative Impact ◽  
Economic Losses ◽  
Fish Health ◽  
Negative Effects ◽  
Vulnerable Group ◽  
Legal Limits ◽  
Fish Feeds ◽  
Low Levels ◽  
Wide Group ◽  
Living Organisms

Mycotoxins are a wide group of compounds that often occur in food and feeds. These toxins negatively affect living organisms and may pose a risk for consumers’ health. Fish seem to be a particularly vulnerable group because negative effects can be observed at low levels of contamination, much lower than those considered harmful for other farmed animals. Mycotoxins may disturb cellular homeostasis by their influence on cells’ metabolism, causing DNA damage and organ lesions. Moreover, they are capable of immunomodulation, which may increase the occurrence of fish diseases caused by bacteria and other pathogens. Furthermore, these substances often have a negative impact on the growth rate of fish, which may cause economic losses to farmers. Although mycotoxins are commonly found in feeds, their ability to bioaccumulate in fish seems to be marginal. Therefore, according to the available data, fish may not be considered as the main source of mycotoxins for humans. Since there are no legal limits on the amount of mycotoxins present in fish feeds, it is necessary to constantly monitor the levels of mycotoxins in fish feeds and to investigate the influence of these substances on fish health..

scholarly journals Problem of environmental safety during construction (analysis of construction impact on environment)

2020 ◽  
Vol 164 ◽  
pp. 07006 ◽  
Author(s):  
Elena Smirnova ◽  
Yuliya Larionova
Keyword(s):  
Sustainable Development ◽  
Negative Impact ◽  
Raw Materials ◽  
Construction Materials ◽  
Interdisciplinary Approach ◽  
Ecological Monitoring ◽  
Environmental Safety ◽  
System Level ◽  
Open Pit ◽  
Construction Activity

The article provides an analysis of construction influence on the environment, the environment-forming function of the construction activity has also been studied. The assessment of environmental factors has been made on the basis of interdisciplinary approach. The conducted assessment of state and dynamics of eco-economic interaction between the construction activity and the environment, the basis of sustenance of the urban and agricultural economy in Russia, has demonstrated the investment potential of production of the construction materials. However, the raw materials are mined by the open pit; the lands of agricultural purpose get requisitioned for the pits. All this shows an ecological inefficiency of the construction industry growing from year to year. A direct demolition of natural eco-systems in the local areas contradicts the attractiveness of ecological construction in the framework of movement to the sustainable development of the country. The system “construction – vital activities environment” has been reviewed as an eco-economic equilibrium, as a criterion of the authentic system-level development. It is necessary to increase the quality of ecological monitoring. The performed analytical helps to come to a conclusion that notwithstanding the developed basic provisions of institutional policy a negative impact of construction on the environment impedes the development of ecologically-oriented investment and construction activity and sustainable development of the country.

scholarly journals Analysis of the methane-bearing capacity in Polish hard coal mines in the years 1993–2018

2020 ◽  
Vol 174 ◽  
pp. 02015
Author(s):  
Magdalena Tutak
Keyword(s):  
Bearing Capacity ◽  
Structural Changes ◽  
Negative Impact ◽  
Coal Mines ◽  
Mining Industry ◽  
Raw Material ◽  
Hard Coal ◽  
Negative Effects ◽  
Energy Characteristics ◽  
Good Energy

The process of underground coal production is inseparably connected with methane emissions. This gas has good energy characteristics and, at the same time, represents a huge threat to the safety of mining exploitation. Due to its flammability and explosiveness, the occurrence of methane-related incidents disturbs the entire production process and is extremely dangerous for the crew. Moreover, methane is a greenhouse gas that has a highly negative impact on the natural environment. These factors make it necessary to carry out works in order to limit its negative effects and increase its use as an energy raw material. The article presents the results of an analysis of the main parameters describing the methane-bearing capacity in Polish hard coal mines. The analysis was conducted within the scope of their absolute values and with reference to one tonne of coal extracted. The purpose of these studies was to identify the changes in the parameters under analysis over the last 25 years in the Polish mining industry and, at the same time, to determine how the structural changes in the mining industry and the entire economy influenced those parameters. This particularly concerns the emission of methane into the environment. The reason is that this value has a huge influence on the opinion about the mining industry. The results presented should be used for works on limiting the harmful effects of methane and increasing the degree of its utilisation in the economy.

scholarly journals Presence of heavy metals in the soil of urban areas of Lukavac and Kalesija and malignant disease prevalence

2019 ◽  
Vol 49 (1) ◽  
Author(s):  
Sanja Brekalo Lazarević ◽  
Edina Handžić ◽  
Abdel Đozić ◽  
Ivana Lazarević ◽  
Zahida Ademović ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Urban Area ◽  
Urban Areas ◽  
Malignant Disease ◽  
Negative Impact ◽  
Soil Samples ◽  
Malignant Diseases ◽  
Negative Effects ◽  
Number Of Patients ◽  
Living Organisms

The development of industry, agriculture, transport and urbanization has resulted in excessive emissions of heavy metals into the environment, which due to their bioaccumulative properties express negative effects on the environment and living organisms as a whole. In this work the presence of heavy metals in the soil samples of the urban area of Lukavac and Kalesija municipality and their effect on the health of the population were studied. Soil samples were collected in October 2017 at five locations in the urban area of Lukavac municipality and two urban locations in Kalesija municipality. Concentrations of chromium (Cr) copper (Cu), cobalt (Co), nickel (Ni), cadmium (Cd), lead (Pb), manganese (Mn), iron (Fe) and zinc (Zn) in the soil samples were determined. The results indicated that in some locations the concentration of heavy metals exceeded the maximum permissible concentration (MPC). MPC value for chromium was exceeded at four locations in the urban area of Lukavac, whereas MPC value for nickel and cadmium was exceeded at all locations. In Kalesija, MPC value was exceeded for chromium and nickel at one location, while cadmium MPC was exceeded at both locations. The negative impact of heavy metals on the health of the population is the cause of many malignant diseases. Statistical analysis of the number of patients with malignant diseases in the area of the Lukavac and Kalesija revealed significantly higher prevalence of malignant diseases of the lungs, breast, skin and cervix in the Lukavac (p<0,05) in comparisson to Kalesija municipality.

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