On the Formation of Technogenic Changes in the Geological Environment in the Deposits of the Almalyk Mining Region

2021 ◽  
Vol 11 (4) ◽  
pp. 4681-4698
Author(s):  
Akhmedov Mukhammadzhakhongir Kidirbaevich ◽  
Isomatov Yusuf Pulatovich
Keyword(s):  
Chemical Composition ◽  
Industrial Waste ◽  
Anthropogenic Impact ◽  
Chemical Compounds ◽  
Solid Particles ◽  
Geological Environment ◽  
Industrial Enterprises ◽  
Waste Storage ◽  
Decisive Importance ◽  
Polluted Waters

The article deals with the issues of the emergence of a new stressed state of rocks during the development of deposits and the formation of several deformations of the sides of the quarries. It is noted that among which gravitational slope deformations in the form of landslides, talus and mudslides are of decisive importance. All these types of deformation are observed in the Sary-Cheku, Kalmakyr, Kurgashinkan and others deposits. As a result of the analysis of the deformation of the quarry walls, the main conclusions were made, which can serve as a basis for the study and forecasting of landslide and other types of deformations. The issues of the technogenic (anthropogenic) impact of industrial enterprises and quarries of the Almalyk region on the environment are also considered. As a result of the infiltration of polluted waters of quarries, dumps, slag ponds and tailing dumps of factories, there is a penetration of polluting components into underground groundwater. Under the influence of the infiltration flow, the chemical composition of soils changes, and several polluting chemical compounds accumulate on their solid particles. Surface wastewater associated with the washing out of sludge and slag from industrial waste storage facilities is also susceptible to pollution.

scholarly journals Features Of Influence Of Industrial Enterprises Almalyk City On The Geological Environment

2020 ◽  
Vol 02 (12) ◽  
pp. 54-62
Author(s):  
Yusuf Pulatovich Isomatov ◽  
◽  
Mukhammadzhakhongir Kidirbaevich Akhmedo ◽  
Server Ibadlaevich Ibadlaev ◽  
◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Chemical Composition ◽  
Chemical Compounds ◽  
Copper Smelting ◽  
Geological Environment ◽  
Soil Particles ◽  
Industrial Enterprises ◽  
Solid Soil ◽  
Smelting Plant ◽  
Copper Smelting Plant

The article considers that the course of more than 5 decades as a result of the infiltration of contaminated waters of open pits, dumps, slag accumulators of the copper smelting plant (CSP), the production association (PА) "Ammophos", tailing dumps of copper concentrating factories (СCF -1 and СCF -2), as well as due to the leakage of reagents from the sulfuric acid shop through rocks that are not consistent in area and insignificant thickness of loess-like loams, and the penetration of polluting components into the aquifer occurs. Due to the action of the infiltration flow, a change in the chemical composition of soils occurs on solid soil particles, a number of chemical compounds are sorbed. The article provides recommendations for reducing the pollution of the geological environment.

Comparative Study on Compositions of Oil-Water Transition Layer before and after ClO2-Treatment Process

2013 ◽  
Vol 652-654 ◽  
pp. 749-752
Author(s):  
Dan Dan Yuan ◽  
Hong Jun Wu ◽  
Hai Xia Sheng ◽  
Xin Sui ◽  
Bao Hui Wang
Keyword(s):  
Chemical Composition ◽  
Transition Layer ◽  
Solid Phase ◽  
Settling Tank ◽  
Physical Structure ◽  
Solid Particles ◽  
Viscosity Reduction ◽  
Insoluble Residue ◽  
Before And After ◽  
Oil Water

In order to meet the need of separating oil from water in the settling tank of the oilfield, ClO2 treatment for oil-water transition layer in settling tank is introduced. The field test displayed that the technique was achieved by a good performance. For understanding the oxidation and mechanism, compositions of oil-water transition layer were comparatively studied for before/after ClO2-treatment in this paper.The experimental results show that the compositions before and after ClO2-treatment, including physical structure and chemical composition, were varied in the great extension. The physical structure, consisting of water, oil and solid phase, was reduced to less than 5% of water and 0.5% of solid particle and increased to 95% of oil in layer compared with before-treatment, easily leading to clearly separating water from oil. The chemical composition of iron sulfide and acid insoluble substance in solid phase was decreased to more than 90% while the carbonate was reduced more than 70% . After the treatment, the viscosity reduction of the water phase in the layer was reached to 50% after oxidation demulsification with ClO2. The chemistry was discussed based on the principles and experiments. Due to ClO2 destroying (oxidizing) the rigid interface membrane structure which is supported by natural surfactant, polymer and solid particles with interface-active materials, the action accelerates the separating of water and oil and sedimentation of insoluble residue of acid in the layer. By demonstrating the experimental data and discussion, we can effectively control the oxidation performance of chlorine dioxide, which is very meaningful for oilfield on the aspect of stable production of petroleum.

scholarly journals Changes in Chemical Composition of Soluble Organic Chemical Compounds during Litters Decomposition into Tropical Forest of <i>Milletia laurentii</i> De Wild

2019 ◽  
Vol 09 (01) ◽  
pp. 70-87
Author(s):  
Gouolaly Tsiba ◽  
Mavoungou Naïving Flovique Rosère ◽  
Edzonga Josianne ◽  
Milandou Matoko Jodhry Préféré ◽  
Malonga Urielle Marini ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Tropical Forest ◽  
Chemical Compounds ◽  
Organic Chemical

scholarly journals Sludge water stabilization treatment

2021 ◽  
Vol 303 ◽  
pp. 01048
Author(s):  
Elena Murko ◽  
Vasily Murko ◽  
Jurgen Kretchmann
Keyword(s):  
Electric Field ◽  
Organic Contaminants ◽  
Low Cost ◽  
Coal Industry ◽  
Solid Particles ◽  
Recycled Water ◽  
Flotation Reagents ◽  
Stabilization Treatment ◽  
Industrial Enterprises ◽  
Service Water

Technologically contaminated water, formed during processing of coal slurries, finds its application in modern technological cycles of coal enrichment. Limitation of use of untreated recycled water of coal concentration plants is caused by a high degree of its mineralization by various salts, presence of insoluble solid particles and presence of flotation reagents, coagulants and flocculants. Part of technical water purified from mineral and organic contaminants can be used in heating systems and heat exchange equipment of industrial enterprises, including the coal industry. For this purpose, it is necessary to reduce the scale-forming ability of service water (to reduce the content of soluble calcium and magnesium salts in water). One of the most effective and advanced methods is the stabilization treatment of water with an electric field. In addition, this method is environmentally safe, low-cost and simple. The article gives the foundation of the method of stabilization treatment of recycled water of concentrating plants by an electric field, a description of the methodology of the laboratory experiment for scaling reduction, and the analysis of the results.

scholarly journals Influence of the pH indicator on dissolved organic carbon for determination the hazardousness of industrial waste

2019 ◽  
pp. 200-206
Author(s):  
Georgiana Cernica ◽  
Georgeta Madalina Arama ◽  
Adriana Cuciureanu ◽  
Gina Catrina ◽  
Diana Stroia
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Industrial Waste ◽  
Common Method ◽  
Leaching Test ◽  
Environmental Legislation ◽  
Ph Indicator ◽  
Essential Information ◽  
Waste Storage ◽  
Influence Of Ph

The paper presents the influence of pH on the dissolved organic carbon in industrial waste samples as a decision indicator in determining the hazardousness of the waste at storage according to the environmental legislation. Waste storage is a common method of management and is realizing according to GO 95/2005, which requires limit concentrations of the indicators analyzed according to each type of deposit (inert, non-hazardous, and hazardous). For the analysis of the dissolved organic carbon, 6 samples of waste from different sectors of activity were subjected to the leaching test and the eluate was analyzed on a multi N/C 3100 equipment at both the pH of the waste, itself and between 7.5 and 8 pH units. From the results obtained it is found that the modification of the pH leads to significant variations in the concentration of the dissolved organic carbon, variations which can provide essential information for the subsequent management of the waste.

scholarly journals Properties of the urban watercourse composition under anthropogenic load

2020 ◽  
Vol 164 ◽  
pp. 01015
Author(s):  
Viktor Denisov ◽  
Ekaterina Bondarenko ◽  
Alexander Scherbakov
Keyword(s):  
Sustainable Development ◽  
Anthropogenic Impact ◽  
Natural Waters ◽  
The State ◽  
Anthropogenic Load ◽  
Urban Rivers ◽  
The Sustainable Development ◽  
Industrial Enterprises ◽  
Chemical Indicators ◽  
Urban Watercourse

The anthropogenic impact on urban rivers is very significant. Industrial enterprises, municipal, and agricultural organizations discharge wastewater directly into the rivers. In the samples of the studied water, certain properties were found. The water in the river is cloudy, brown in color, and in some places has a sharp smell. Extraneous impurities and foam were detected in water. Moreover, various chemicals were found, which are not characteristic to natural waters. The analyzed water is highly polluted as shown by the following chemical indicators, which reported results higher than the Maximum Allowable Concentration: Fe concentration is 24 times higher than standard, Cu is 5 times higher, Mn is 6 times higher, Al is 366 times higher, Hg is 3 times higher, Zn is 4 times higher, NO2 is 2.5 times higher, hydrocarbon pollution is 2.8 times higher, NH4 is 1.9 times higher. Therefore, it is necessary to immediately develop effective methods for monitoring the state of the watercourse, both economic and energetic. To save the sustainable development of the natural system.

scholarly journals Micro-Raman Spectroscopy Assessment of Chemical Compounds of Mantle Clinopyroxenes

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1084
Author(s):  
Anastasiya D. Kalugina ◽  
Dmitry A. Zedgenizov
Keyword(s):  
Raman Spectroscopy ◽  
Chemical Composition ◽  
Chemical Compounds ◽  
Peak Position ◽  
Mantle Xenoliths ◽  
Wide Range ◽  
Stretching Vibration ◽  
Raman Modes ◽  
Non Destructive ◽  
Heterovalent Isomorphism

The composition of clinopyroxenes is indicative for chemical and physical properties of mantle substrates. In this study, we present the results of Raman spectroscopy examination of clinopyroxene inclusions in natural diamonds (n = 51) and clinopyroxenes from mantle xenoliths of peridotites and eclogites from kimberlites (n = 28). The chemical composition of studied clinopyroxenes shows wide variations indicating their origin in different mantle lithologies. All clinopyroxenes have intense Raman modes corresponding to metal-oxygen translation (~300–500 cm−1), stretching vibrations of bridging O-Si-Obr (ν11~670 cm−1), and nonbridging atoms O-Si-Onbr (ν16~1000 cm−1). The peak position of the stretching vibration mode (ν11) for the studied clinopyroxenes varies in a wide range (23 cm−1) and generally correlates with their chemical composition and reflects the diopside-jadeite heterovalent isomorphism. These correlations may be used for rough estimation of these compounds using the non-destructive Raman spectroscopy technique.

scholarly journals Genotoxic and Carcinogenic Potential of Compounds Associated with Electronic Cigarettes: A Systematic Review

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Isaac Armendáriz-Castillo ◽  
Santiago Guerrero ◽  
Antonella Vera-Guapi ◽  
Tiffany Cevallos-Vilatuña ◽  
Jennyfer M. García-Cárdenas ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Human Health ◽  
Conflicts Of Interest ◽  
Electronic Cigarettes ◽  
Chemical Compounds ◽  
Electronic Cigarette ◽  
Eligibility Criteria ◽  
Carcinogenic Potential ◽  
Chemical Abstracts Service ◽  
First Time

Background. Many studies, comparing the health associated risks of electronic cigarettes with conventional cigarettes focus mainly on the common chemical compounds found between them. Aim. Review chemical compounds found exclusively in electronic cigarettes and describe their toxic effects, focusing on electronic-cigarette-only and dual electronic-cigarette and conventional cigarette users. Data Sources. Literature search was carried out using PubMed. Study Eligibility Criteria. Articles related exclusively to conventional and electronic cigarettes’ chemical composition. Articles which reported to be financed from tobacco or electronic cigarettes industries, not reporting source of funding, not related to the chemical composition of electronic and conventional cigarettes and not relevant to tobacco research were excluded. Methods and Results. Chemical compounds reported in the selected studies were tabulated using the Chemical Abstracts Service registry number for chemical substances information. A total of 50 chemical compounds were exclusively reported to be present in electronic cigarettes. Crucial health risks identified were: eye, skin, and respiratory tract irritation, with almost 50% of incidence, an increment of 10% in cytotoxic effects, when compared to compounds in common with conventional cigarettes and around 11% of compounds with unknown effects to human health. Limitations. Articles reporting conflicts of interest. Conclusions and Implications of Key Findings. Despite being considered as less harmful for human health, compounds found in electronic cigarettes are still a matter of research and their effects on health are yet unknown. The use of these devices is not recommended for first time users and it is considered hazardous for dual users.

scholarly journals Contact Toxicity and Repellency of the Essential Oil from Bupleurum bicaule Helm against Two Stored Product Insects

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Xiao-Meng Wei ◽  
Shan-Shan Guo ◽  
Hua Yan ◽  
Xian-Long Cheng ◽  
Feng Wei ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Chemical Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Bornyl Acetate ◽  
Contact Toxicity ◽  
Lasioderma Serricorne ◽  
Stored Product Insects

Essential oils obtained from many plants showed various kinds of insecticidal properties; some of them have been considered as alternative insecticides for pest control. The present study was aimed at determining the chemical composition of the essential oil from the roots of Bupleurum bicaule Helm, as well as evaluating the contact and repellent activities of the oil and four identified compounds against Lasioderma serricorne and Liposcelis bostrychophila adults. The essential oil was extracted by hydrodistillation, and its components were analyzed by gas chromatography-mass spectrometry (GC-MS). 26 components were determined and the main compounds included trans-2-isopropylbicyclo[4.3.0]non-3-en-8-one (25.9%), 4,5-dimethyl-1,2,3,6,7,8,8a,8b-octahydrobiphenylene (23.5%), and 1,4-dimethoxy-2-tert-butylbenzene (4.3%). It was found that the essential oil exhibited contact toxicity against L. serricorne (LD50 = 11.91 μg/adult), but the contact toxicity against L. bostrychophila could not be observed. The essential oil also showed strong repellent activity against L. serricorne with percent repellency of 100% at 78.63 nl/cm2. Four chemical compounds, 1,4-dimethoxy-2-tert-butylbenzene, bornyl acetate, (2E,4E)-2,4-nonadienal, and β-bisabolene, exhibited various levels of bioactivities. The experimental results indicated that the essential oil of B. bicaule and its individual compounds could be used in insecticidal and repellent strategies for stored product insects.

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