The choice of a method for protecting the environment from pollution when mining asbestos-containing ore

2020 ◽  
pp. 66-71
Author(s):  
A. V. Khokhryakov ◽  
G. A. Studenok ◽  
A. G. Studenok ◽  
A. M. Olkhovsky
Keyword(s):  
Negative Impact ◽  
Raw Materials ◽  
Open Pit ◽  
Nitrogen Compounds ◽  
Chrysotile Asbestos ◽  
Natural Factors ◽  
Mine Workings ◽  
The Relationship ◽  
Drainage Waters

The article analyzes the mechanism of contamination of quarry waters during drilling and blasting preparation of asbestos-containing raw materials under the influence of man-made and natural factors, which can serve as a basis for making specific technological decisions that reduce the negative impact on the environment during the development of chrysotile-asbestos deposits. The dependence of the intake of nitrogen compounds in quarry waters on the consumption of explosives and the volume of formation of quarry waters is presented. The article shows the possibility of using the purification of quarry water in the spent open mine workings, the sides of which are composed of plastic asbestos-containing rocks. The relationship between the volumes of internaldumping and contamination of open pit drainage waters is analyzed.

scholarly journals Improvement methods of mining enterprises wastewater purification from nitrogen compounds

2021 ◽  
Vol 303 ◽  
pp. 01016
Author(s):  
Tatyana Tyuleneva ◽  
Gennady Studenok
Keyword(s):  
Negative Impact ◽  
Integrated Approach ◽  
Point Of View ◽  
Open Pit ◽  
Nitrogen Compounds ◽  
Natural Ecosystem ◽  
Wastewater Purification ◽  
Advantages And Disadvantages ◽  
Mine Workings ◽  
Cleaning Methods

A typical negative impact on water resources for mining companies engaged in blasting operations is the discharge of quarry and mine water contaminated with nitrogen compounds. The solution of the problem under consideration is assumed with an integrated approach based on the use of partially flooded abandoned mine workings already available at the enterprise as bioengineered structures. The article substantiates and confirms the possibility of using flooded abandoned open-pit mine workings for the treatment of wastewater from mines and quarries contaminated with nitrogen compounds from the most environmentally hazardous components by natural microbiological nitrification. The advantages and disadvantages of the applied cleaning methods are investigated. The possibility of applying the method of biological purification based on the use of flooded waste workings with the existing natural ecosystem is justified from the point of view of economic efficiency. The advantages of this method are described and the effectiveness of its application is confirmed.

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.

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 A Step Towards Sustainable Clothing –Bioplastics Over Plastics

2021 ◽  
pp. 85-92
Author(s):  
Vanshita Mittal ◽  
Trisha Roy ◽  
Sonam Verma ◽  
Neetu Malhotra
Keyword(s):  
Organic Materials ◽  
Negative Impact ◽  
Raw Materials ◽  
Consumer Preference ◽  
Wildlife Habitat ◽  
Biodegradable Plastic ◽  
Government Policies ◽  
Surface Ornamentation ◽  
The Given ◽  
The Relationship

A type of biodegradable plastic derived from biological substances instead of petroleum is Bio-Plastics. The following study explores how plastics were changed by focusing on the relationship between bioplastic materials and the products into which they are made. At the present time, used as a flipside of plastic; the reason behind the enlargement of plastic objects like stones and much more. The production of plastic is inexpensive and comparatively more durable and the rate of production is high due to the Earth’s environment that negatively affects wildlife, wildlife habitat, and humans. For the present time, plastics are replaced by bioplastics as Biomass is simply available in large quantities and bio-plastics can easily be made by them. This is true that life is implausible today without plastic. People nowadays know about the huge benefits but they are not aware about the negative impact of the same plastic on the environment. The growth of biodegradable plastic is derivative by the given factors:- • Government policies towards Go Green obtainment. • Biodegradability. • Use of renewable and bio-based raw materials. • Consumer preference towards eco friendly products. The knowledge gained by the activity was to frame the plastic and create motifs as a surface embellishment used in our innovative and draping saree collection. The following study will help to understand the application of bioplastic as surface ornamentation in the process of range development of saree collection using organic materials. The recommendation to overcome the barrier of bio-plastic use, was provided and evaluated by the technical, social, and economic based evidence where they offer possibility over unexceptional plastic.

scholarly journals On commercialization of waste rock dumpsand the role of drilling and blasting operations in this process

2021 ◽  
pp. 110-113
Author(s):  
S.N. Zharikov
Keyword(s):  
Russian Federation ◽  
Building Materials ◽  
Negative Impact ◽  
Raw Materials ◽  
Open Pit ◽  
Open Pit Mining ◽  
Processing Plants ◽  
Significant Negative Impact ◽  
The Russian Federation ◽  
The One

On the territory of the Russian Federation, exactly as in the rest of the world, huge amounts of mining waste have been accumulated. Most of them in open-pit mining are dumps of rock mass that occupy huge territories and have a significant negative impact on the earth's ecology. Most of the dumps are non-toxic and can be used for economic purposes where sand and stone are needed-in construction. However, the volumes are too large and only a small part can be used for the production of building materials. Another thing is if you need a large amount of rock for the construction of a long roadbed. There are other requirements for raw materials and the possibility of releasing large areas occupied by dumps. This direction has significant potential, because on the one hand, cheap construction raw materials, and on the other – a reduction in fees for the use of land (especially relevant for large mining and processing plants). The development of dumps as man-made deposits has its own risks and associated problems. However, it leads to the development of new technological solutions, which in turn opens up certain prospects for subsoil users. Currently, this direction is in its infancy, but the scale of the problem of storing dumps is already obvious. Therefore, despite the doubts, recycling of dumps is inevitable. It is also clear that this processing should be in huge volumes. And such volumes of use in the Russian Federation can only be achieved when building roads.

scholarly journals Influence of climatic and hydrodynamic factors on the quarry water purification process from nitrogen compounds

2020 ◽  
Vol 177 ◽  
pp. 04008
Author(s):  
Alexander Khokhryakov ◽  
Gennady Studenok ◽  
Andrey Studenok ◽  
Alexander Olkhovsky ◽  
Vladimir Boltyrov
Keyword(s):  
Treatment Method ◽  
Open Pit ◽  
Nitrogen Compounds ◽  
Purification Process ◽  
Open Pit Mines ◽  
Mining Enterprise ◽  
Water Conditioning ◽  
Promising Treatment ◽  
Hydrodynamic Factors ◽  
Drainage Waters

The nitrogen compounds, namely ammonium, nitrite and nitrate nitrogen, are the main substances polluting the quarry and drainage waters of mining enterprises that use the ammonium nitrate-based explosives for drilling-and-blasting rock mass preparation. In accordance with the legislation, such waters are subject to treatment prior to discharge into the water bodies. At the mining enterprises, the promising treatment method is the treated water conditioning in the flooded abandoned open-pit mines, during which the natural microbiological nitrification of ammonium and nitrite nitrogen contained in the quarry drainage waters is performed with an efficiency of more than 95%. The article discusses the influence of natural climatic and hydrodynamic factors on the nitrification process according to the results of a purification process study that has been performed since 2014 until the present time at a large mining enterprise. The relevant conclusions and recommendations are given.

HUBUNGAN KEPADATAN BIVALVIA DENGAN PARAMETER LINGKUNGAN DI PESISIR TANJUNG PURA KABUPATEN BANGKA TENGAH

2020 ◽  
Vol 13 (2) ◽  
pp. 112-121
Author(s):  
Sudiyar . ◽  
Okto Supratman ◽  
Indra Ambalika Syari
Keyword(s):  
Negative Impact ◽  
Principal Component ◽  
Environmental Parameters ◽  
Data Retrieval ◽  
Distribution Patterns ◽  
Random System ◽  
System Method ◽  
Relationship Of ◽  
The Relationship ◽  
Anadara Granosa

The destructive fishing feared will give a negative impact on the survival of this organism. This study aims to analyze the density of bivalves, distribution patterns, and to analyze the relationship of bivalves with environmental parameters in Tanjung Pura village. This research was conducted in March 2019. The systematic random system method was used for collecting data of bivalves. The collecting Data retrieval divided into five research stasions. The results obtained 6 types of bivalves from 3 families and the total is 115 individuals. The highest bivalve density is 4.56 ind / m², and the lowest bivalves are located at station 2,1.56 ind / m²,  The pattern of bivalve distribution in the Coastal of Tanjung Pura Village is grouping. The results of principal component analysis (PCA) showed that Anadara granosa species was positively correlated with TSS r = 0.890, Dosinia contusa, Anomalocardia squamosa, Mererix meretrix, Placamen isabellina, and Tellinella spengleri were positively correlated with currents r = 0.933.

Work Stress and Organisational Citizenship Behaviours (OCBs) in Call Centers Employees

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Sunita ◽  
Urvashi Singh ◽  
Shalini Singh ◽  
Rajnee Sharma
Keyword(s):  
Negative Impact ◽  
Call Centers ◽  
Negative Relationship ◽  
Married Couples ◽  
Call Centre ◽  
Simple Correlation ◽  
Nuclear Families ◽  
Set Up ◽  
Stress At Work ◽  
The Relationship

The present study was conducted to examine the relationship between organisational stress and organisational citizenship behaviours (OCBs) in employees of call centers. The study also further explored as how stress at work set-up has negative impact on OCBs. A sample of 250 employees working in call centre of Gurgaon belonging to an age group of 25-30 years were selected on availability basis. All were working married couples living in nuclear families. Job stress survey (Spielberger & Vagg, 1999) and Organisational Citizenship Behaviour (Bateman & Organ, 1983) were administered. Data was analysed by using simple correlation and multiple regression. Results showed the negative relationship between organisational stress and OCBs. Results of regression analysis also exhibited the negative impact of stress on OCBs. The implications for the employees are discussed.

Is There Racial Discrimination in Police Stop-and-Searches of Black Youth? A Toronto Case Study

2015 ◽  
Vol 7 (1) ◽  
pp. 115 ◽  
Author(s):  
Yunliang Meng ◽  
Sulaimon Giwa ◽  
Uzo Anucha
Keyword(s):  
Racial Profiling ◽  
Negative Impact ◽  
Black Youth ◽  
White People ◽  
Neighbourhood Level ◽  
Neighbourhood Characteristics ◽  
The Relationship ◽  
Race And Place ◽  
Stop And Search

Our study investigated racial profiling of Black youth in Toronto and linked this racial profiling to urban disadvantage theory, which highlights neighbourhood-level processes. Our findings provide empirical evidence suggesting that because of racial profiling, Black youth are subject to disproportionately more stops for gun-, traffic-, drug-, and suspicious activity-related reasons. Moreover, they show that drug-related stop-and-searches of Black youth occur most excessively in neighbourhoods where more White people reside and are less disadvantaged, demonstrating that race-and-place profiling of Black youth exists in police stop-and-search practices. This study shows that the theoretical literature in sociology on neighbourhood characteristics can contribute to an understanding of the relationship between race and police stops in the context of neighbourhood. It also discusses the negative impact of racial profiling on Black youth.

Organic chemical devulcanization of rubber vulcanizates in supercritical carbon dioxide and associated less eco-unfriendly approaches: A review

2021 ◽  
pp. 0734242X2110085
Author(s):  
Jabulani I Gumede ◽  
Buyiswa G Hlangothi ◽  
Chris D Woolard ◽  
Shanganyane P Hlangothi
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Negative Impact ◽  
Raw Materials ◽  
Chemical Components ◽  
Organic Chemical ◽  
Attractive Alternative ◽  
Special Focus ◽  
Waste Tyres ◽  
Supercritical Carbon

There is a growing need to recover raw materials from waste due to increasing environmental concerns and the widely adopted transition to circular economy. For waste tyres, it is necessary to continuously develop methods and processes that can devulcanize rubber vulcanizates into rubber products with qualities and properties that can closely match those of the virgin rubber. Currently, the most common, due to its efficiency and perceived eco-friendliness in recovering raw rubber from waste rubbers, such as tyres, is devulcanization in supercritical carbon dioxide (scCO2) using commercial and typical devulcanizing agents. The scCO2 has been generally accepted as an attractive alternative to the traditional liquid-based devulcanization media because of the resultant devulcanized rubber has relatively better quality than other processes. For instance, when scCO2 is employed to recover rubber from waste tyres (e.g. truck tyres) and the recovered rubber is blended with virgin natural rubber (NR) in various compositions, the curing and mechanical properties of the blends closely match those of virgin NR. The atmospheric toxicity and cost of the commonly used devulcanization materials like chemical agents, oils and solvents have enabled a shift towards utilization of greener (mainly organic) and readily available devulcanization chemical components. This literature review paper discusses the approaches, which have less negative impact on the environment, in chemical devulcanization of rubber vulcanizates. A special focus has been on thermo-chemical devulcanization of waste tyres in scCO2 using common organic devulcanizing agents.

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