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Journal articles on the topic 'Purification degree'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Lubomyr, Chelyadyn, Kostyshyn Volodymyr, Chelyadyn Volodymyr, Romanyshyn Taras, and Vasechko Valentin. "WASTEWATER PURIFICATION TECHNOLOGY BY TWOSTAGE TREATMENT IN ELECTRICAL DEVICE OF A COMPACT LOCAL INSTALLATION." Eastern-European Journal of Enterprise Technologies 3, no. 10 (105) (2020): 63–70. https://doi.org/10.15587/1729-4061.2020.206815.

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Wastewater generated at industrial and communal facilities is treated within the limits of permissible values established by law. The drains of transport and tourism infrastructure in most cases are cleared with local treatment facilities. For wastewater purification, the biological method is most often used, which is implemented on complex and bulky wastewater purification plants located in large areas. It is proposed to carry out wastewater purification from small objects locally using physical and electrochemical technology with compact equipment. A design of a device for treating wastewate

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2

Liu, Ke Guo, Li Li Gu, Hui Guang Hu, Rong Yang, and Jun Tao. "Application of Additives in 1,8-Cineole Purification." Advanced Materials Research 634-638 (January 2013): 382–85. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.382.

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The experimental studies for purification of 1,8-cineole by vacuum batch distillation as well as the application of additives in 1,8-cineole purification were carried out. There were two steps during the purification. In the first step, experimental results showed that the optimal operation conditions for purification of 1,8-cineole were the temperature of the reboiler at about 320.15 K under a certain vacuum degree. In the second step, the optimal operation temperature of the reboiler was 331.15 K. The optimal reflux ratio was generated finally. Vacuum degree was controlled between 1.1 kPa an

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3

Helesh, Andriy, Petro Mudrynets, Yaroslav Kalymon, Diana Kindzera, and Vira Hnativ. "Establishment of technologically feasible modes of electrocoagulation purification of wastewater from nickel ions." Technology audit and production reserves 2, no. 3(70) (2023): 25–30. http://dx.doi.org/10.15587/2706-5448.2023.278006.

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The object of research is the technology of electrochemical purification of wastewater from heavy metal ions. The work, in particular, is devoted to the purification of effluents with a low concentration of the Nickel ion. The main task of the experimental research was to select the material of the electrodes and the mode of electrochemical dissolution of the anodes, under which the efficiency of wastewater purification will be maximum, as well as to confirm the practical possibility of deep purification of the specified wastewater to the standards that correspond to the maximum permissible co

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4

Dali, Ioseliani, Kalabegashvili Neli, Balarjishvili Gulnara, Samkharadze Liana, and Nonikashvili Nino. "Water purification from zinc ions using expanded perlite." World Journal of Advanced Research and Reviews 19, no. 1 (2023): 214–20. https://doi.org/10.5281/zenodo.10218121.

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Adsorptive capacities of expanded perlite, prepared on the basis of natural mineral of Georgia – perlite, in the process of aqueous solution purification from Zn (II) ions, have been first studied in the work. The dependencies of adsorption degree and volume capacity on adsorbent dosage, contact time, adsorbate concentration and pH of solution medium have been studied. Experiments have been conducted under dynamic conditions.Optimum conditions of Zn(II) ion adsorption have been established. Maximal efficiency of adsorption degree under these conditions was equal to 93,6, while volume capacity

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5

Vashkurak, Uliana, Liliya Shevchuk, Ivan Aftanaziv, and Anna Romaniv. "The effect of ultrasound on the treatment of domestic wastewater from organic and biological contamination." French-Ukrainian Journal of Chemistry 8, no. 1 (2020): 125–32. http://dx.doi.org/10.17721/fujcv8i1p125-132.

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The effectiveness of the uses of ultrasonic cavitation for wastewater treatment has been investigated. The influence of the gases of different nature (nitrogen, oxygen, air, mixture of nitrogen and oxygen gases in the ratio of 1:1) on the destruction of organic and biological contaminants has been carried out. It is confirmed that ultrasound cavitation increases the purification effect of gases. It is established that the deepest purification from organic contaminants was achieved by the common action of air with ultrasound, the degree of water purification from organic compounds being 80% and

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6

Le, Qi Chi, Zhi Qiang Zhang, Jian Zhong Cui, and Shou Wei Chang. "Study on the Filtering Purification of AZ91 Magnesium Alloy." Materials Science Forum 610-613 (January 2009): 754–57. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.754.

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High quality magnesium casting depends significantly on the purification of its alloy melt. However, it is very difficult to obtain high-quality magnesium alloy melt due to its high reactivity and its tendency of combustion. The fluxing processing, a traditional purification method for magnesium melt, not only bears the risk of flux inclusions but also is facing more and more environmental pressure today. Therefore, the effective substitutes for fluxing processing, such as physical filtering method, are paid more attention recently. In this paper, the effects of technological conditions includ

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7

Litvinov, V. V., N. A. Strunnikova, G. K. Daumova, N. V. Seraya, O. Mutere, and S. S. Utin. "OPTIMAL CONDITIONS FOR LIME TREATMENT OF MINE WASTEWATER FROM POLYMETALLIC ORE MINES." Bulletin D. Serikbayev of EKTU, no. 1 (March 2024): 179–89. http://dx.doi.org/10.51885/1561-4212_2024_1_179.

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Mine waters of polymetallic mines are multicomponent systems containing ions of heavy non-ferrous metals, calcium, magnesium, iron, ammonium, as well as chlorides, sulfates, fluorides and other components in a wide range of concentrations. As a rule, water purification of this type is carried out by the lime method, which provides a fairly high degree of extraction of the most toxic pollutants (metals), with relatively small material costs. Taking into account the large volume, complexity and variation of the composition of mine waters, the tasks of optimizing reagent consumption, methods of i

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8

Xiao, Li, Wei Zhang, Yidong Huang, and Jiangde Peng. "Polarization entanglement purification using the temporal degree of freedom." Physics Letters A 372, no. 40 (2008): 6130–33. http://dx.doi.org/10.1016/j.physleta.2008.08.018.

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9

Krutau, A. V., M. M. Dechko, and M. A. Boika. "Optimization of Wastewater Treatment Process on Energy Costs at Truck and Tractor Washing Posts." Science & Technique 18, no. 5 (2019): 436–42. http://dx.doi.org/10.21122/2227-1031-2019-18-5-436-442.

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The paper considers a process pertaining to purification of oily effluents while using electrocoagulation, electro-flotation and an electromagnetic hydro-cyclone, implemented with the help of a laboratory unit (Patent of the Republic of Belarus for the invention No 21229). The investigations have been carried out with the purpose to optimize specific energy consumption for the process of cleaning fuel and lubricants effluents. The following investigation methods have been applied – a literature review, a comparative analysis, an experiment execution, a mathematical modeling. Content of oil pro

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10

Glushchenko, Andrey, Denis Molochnikov, Alexei Khokhlov, Evgeniy Proshkin, and Ilnar Gayaziev. "On the issue of the installation of the purification degree dependence of polluted spent mineral oil on the hydrocyclone constructive and geometrical parameters." BIO Web of Conferences 17 (2020): 00018. http://dx.doi.org/10.1051/bioconf/20201700018.

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The urgency of the issue is reasoned by the necessity to develop environmentally friendly technologies and engineering tools for cleaning emerged mineral oil from insoluble impurities in order to reuse them in the nodes and auto-tractor equipment systems. Hydrocyclone is one of the simplest and most effective means of cleaning waste oil. In order to determine the possibility of hydrocyclone usage in technological lines for purifying oils, it is necessary to establish the influence of its geometrical parameters on the purification quality of such high-viscosity liquid as emerged mineral oils. T

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11

Takada, Ryoichi, Ryosuke Takagi, and Hideto Matsuyama. "High-Degree Concentration Organic Solvent Forward Osmosis for Pharmaceutical Pre-Concentration." Membranes 14, no. 1 (2024): 14. http://dx.doi.org/10.3390/membranes14010014.

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Over half of the pharmaceutical industry’s capital investments are related to the purification of active pharmaceutical ingredients (APIs). Thus, a cost-effective purification process with a highly concentrated solution is urgently required. In addition, the purification process should be nonthermal because most APIs and their intermediates are temperature-sensitive. This study investigated a high-degree concentration organic solvent forward osmosis (OSFO) membrane process. A polyketone-based thin-film composite hollow fiber membrane with a polyamide selective layer on the bore surface was use

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12

Natalia, Bordiug, Rashchenko Anastasiia, Korpan Irina, and Cherkavsky Vitaliy. "Justification of theoretical and methodological aspects of using the tools of system analysis to ensure the protection of atmospheric air." Technology audit and production reserves 5, no. 3(55) (2020): 4–8. https://doi.org/10.15587/2706-5448.2020.214726.

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<em>The object of research is the degree of air pollution as a result of the work of enterprises of certain industries and the technology of their purification. One of the priority tasks is to ensure the country's environmental safety, but for its implementation it is necessary to minimize air pollution. For this, it is necessary to establish a full-fledged monitoring system, as well as modernize, maintain the functioning and control of air purification systems, polluted as a result of technological processes of enterprises of various industries. The work carried out the development of a m

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13

Ibragimova, M. J., S. A. Seidova, S. G. Alieva, H. J. Huseynov, Kh A. Abdullaeva, and F. Yu Yusifzade. "IONIC LIQUIDS AS EXTRAGENTS OF COMPOUNDS NEGATIVELY AFFECTING THE ENVIRONMENTAL PROPERTIES OF DIESEL FUEL." Azerbaijan Chemical Journal, no. 3 (August 21, 2024): 20–28. http://dx.doi.org/10.32737/0005-2531-2024-3-20-28.

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The results of scientific research in the field of liquid-liquid extraction purification of diesel distillates differing in the content of undesirable aromatic and sulfur compounds using various ionic liquids as a selective, environmentally friendly solvent are presented. Different extracting ability of ionic liquids (dipropylammonium, dibutylammonium and N-methylpyrrolidinium acetate, morpholinium formate) in relation to the extracted components of diesel distillate is shown. In particular, a high degree of purification of the hydrotreated diesel fraction was established when using N-methylpy

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14

Gorlova, Nina N., and Gennady V. Medvedev. "ASSESSMENT OF THE DEPENDENCE OF SHIP POWER PLANTS EXHAUST GASES PURIFICATION DEGREE ON CORROSION RESISTANCE AND THE AMOUNT OF THE CATALYTIC MATERIAL COMPOSITION." Russian Journal of Water Transport, no. 63 (June 1, 2020): 183–92. http://dx.doi.org/10.37890/jwt.vi63.88.

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A significant negative impact on the environmental components (atmosphere and hydrosphere) is provided by water transport as a result of the use of “heavy” fuels and the lack of effective exhaust gas purification systems. One of the technologically and cost-effective is the cleaning of spent marine power plants using catalytic converters. An optimal degree of purification of exhaust gases from sulfur and nitrogen compounds is ensured by using catalytic materials in porous permeable SHS purification systems.

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15

Andriy, Helesh, Mudrynets Petro, Kalymon Yaroslav, Kindzera Diana, and Hnativ Vira. "Establishment of technologically feasible modes of electrocoagulation purification of wastewater from nickel ions." Technology audit and production reserves 2, no. 3(70) (2023): 25–30. https://doi.org/10.15587/2706-5448.2023.278006.

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<em>The object of research is </em><em>the technology of electrochemical purification of wastewater from heavy metal ions. </em><em>The work, </em><em>in particular, </em><em>is devoted to </em><em>the purification of effluents with a low concentration of the Nickel ion. </em><em>The main task of the experimental research was to select the material of the electrodes and the mode of electrochemical dissolution of the anodes, under which the efficiency of wastewater purification will be maximum, as well as to confirm the practical possibility of deep purification of

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16

Chuikov, Alexander, Andrey Volkov, Igor Barskii, and Dmitrii Shabanov. "Study of water purification reactor operating modes." E3S Web of Conferences 378 (2023): 03001. http://dx.doi.org/10.1051/e3sconf/202337803001.

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Wastewater treatment is one of the main problems of development and urbanization of the Arctic regions. This article is devoted to the development of a method for assessing the degree of water purification in order to determine the optimum operating parameters of treatment reactors for water treatment by ferrates from industrial and household waste resulting from the development of Arctic regions. Experiments reflecting the influence of the amount of air supplied to the purification plant on the processes of mixing and distribution of water were carried out and analyzed. Based on the experimen

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17

Zhanikulov, Sh, T. Khalmuradov, and M. Allanazarov. "Prerequisites for improving the cleaning process dried seedless grapes (Sultanas)." IOP Conference Series: Earth and Environmental Science 1112, no. 1 (2022): 012015. http://dx.doi.org/10.1088/1755-1315/1112/1/012015.

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Abstract The authors propose a technological scheme for cleaning dried sultanas as well as technical means for purification. The basic parameters of working elements and movement of bunches and clumps of dried grapes inside a drum and regularities of their degree of purification are theoretically substantiated.

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18

Gupta, N. Vishal, Nataraj Hm, and Ravi G. "VALIDATION OF WATER PURIFICATION SYSTEM." Asian Journal of Pharmaceutical and Clinical Research 10, no. 4 (2017): 409. http://dx.doi.org/10.22159/ajpcr.2017.v10i4.16955.

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Objective: Validation of water treatment systems is required to achieve water with all preferred quality attributes. This also delivers a circumstantial to establish a total control over the process which screens efficacy, safety, and ultimately, the process outcomes. The goal of steering validation is to establish that a process when operated within established limits, yields a product of reliable and definite quality with a high degree of assurance.Methods: The current work is an effort to deliberate several aspects of validation comprising different approaches, machineries of water purifica

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19

Urazkeldiyeva, D. A., A. A. Kadirbayeva, A. F. Minakovsky, N. K. Sarypbekova та B. M. Smailov. "Methods for purifying table salt from the Bakhyt-Тany deposit". Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources 334, № 3 (2024): 19–25. http://dx.doi.org/10.31643/2025/6445.24.

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This article discusses modern methods of purifying table salt from the Bakhyt-Tany deposits. Currently, the demand for various methods of production and processing of table salt is increasing. Therefore, high-quality purification of table salt and its effective use is one of the urgent tasks. As an object of study, salts were taken from the Bakhyt-Tany deposit, located in the Sozak district of the Turkestan region. The main goal of the scientific work is to study methods for purifying and processing sodium chloride from impurities. Modern analytical methods were used during scientific research

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20

Atamanova, O., E. I. Tikhomirova, A. A. Podoksenov, A. S. Glubokaya, and Z. A. Simonova. "Purification of water environments from heavy metals ions pollution." IOP Conference Series: Earth and Environmental Science 1061, no. 1 (2022): 012027. http://dx.doi.org/10.1088/1755-1315/1061/1/012027.

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Abstract Modern methods for extracting heavy metal ions from industrial wastewater are quite diverse. The purpose of the study was to develop and justify new technologies for purification of aqueous media, including adsorption purification, from heavy metal ions (by the example of Ni2+ and Cd2+ ions). Laboratory studies have established that the degree of adsorption extraction of Ni2+ ions by the sorption material from bentonite modified with carbon nanotubes and fired at a temperature of 550 °C increases by 13-14 % due to its activation with 18 % HCl solution and 38 % CaCl2 solution, and the

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21

Kowalik, Patrycja, Dorota Kopyto, Mateusz Ciszewski, Michał Drzazga, and Katarzyna Leszczyńska-Sejda. "Purification of Industrial Copper Electrolyte from Bismuth Impurity." Minerals 12, no. 1 (2021): 36. http://dx.doi.org/10.3390/min12010036.

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This work focused on purifying copper electrolytes from a bismuth impurity on a laboratory scale. The electrolyte came from Polish copper electrorefineries with the content of main components, g/dm3: 49.6 Cu, 160 H2SO4. The electrolyte was enriched in bismuth by Bi2O3 addition. Purification of bismuth contamination was carried out using selected agents with adsorbing effects, such as barium hydroxide octahydrate, strontium carbonate, barium carbonate, barium and lead sulfates. The trials were performed until achieving the Bi level—below 0.1 g/dm3. During the experiments, it was noticed that el

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22

D., Ioseliani, Balarjishvili G., Kalabegashvili N., Nonikashvili N., Samkharadze L., and Javakhishvili I. "Adsorptive removal of zinc ions from aqueous solutions in the presence of Georgia minerals." World Journal of Advanced Research and Reviews 22, no. 3 (2024): 438–44. https://doi.org/10.5281/zenodo.14729657.

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The article represents the new chemically active natural minerals of Georgia – travertine and limestone. In this work, for the first time there have been studied adsorptive properties of the mentioned minerals in the process of aqueous solution purification from zinc ions. Materials under study are represented by unprocessed forms of travertine and limestone. Factors having an impact on sorption capacity of these minerals are analyzed based on the experiments.  The dependence of degree of adsorption and adsorptive capacity on adsorbent dosage, time contact, adsorbate concentration a

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23

Fadeev, I. V., I. A. Uspenskiy, V. P. Voronov, V. V. Zyuba, N. I. Khaylov, and I. K. Danilov. "Influence of the Duration of the Jet Wash on the Degree of Parts Cleaning." Machinery and Equipment for Rural Area, no. 8 (August 30, 2022): 28–30. http://dx.doi.org/10.33267/2072-9642-2022-8-28-30.

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The influence of the washing process duration on the degree of cleaning of automotive equipment parts during jet washing has been studied. It has been experimentally proven that increasing the washing time to 5 minutes increases the degree of purification to 83.35 %. Its further increase does not lead to significant improvement.

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24

Tereshchenko, Nataliya, Olena Khyzhan, Lidia Kovshun, Viktor Maksin, and Alexander Bobunov. "Development of Extraction Method of Polycyclic Aromatic Hydrocarbons from Sunflower Oil." French-Ukrainian Journal of Chemistry 8, no. 2 (2020): 7–16. http://dx.doi.org/10.17721/fujcv8i2p7-16.

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Polycyclic aromatic hydrocarbons (PAHs) adsorption extraction process from sunflower oil on activated carbon was studied. Specific adsorption values on activated charcoal-xenobiotic system for compounds of benzo(a)anthracene, benzo(a)pyrene, benzo(e)pyrene, chrysene, benzo(b)fluoranthene and their mixtures were investigated. Influence of phase contact time of system, ratio of components on degree of PAHs extraction under isothermal conditions (25 ± 0.01ºC) was studied. Degree of oil purification was controlled by method of high performance liquid chromatography with fluorescence detector (HPLC

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25

Muzafarov, Shavkat, Vladlen Balitsky, Aziz Babayev, et al. "Investigation the formation of a spark discharge from a layer of deposited dust on a grounded electrode and dependence of air purification degree on the potential electrode voltage." E3S Web of Conferences 563 (2024): 01018. http://dx.doi.org/10.1051/e3sconf/202456301018.

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This article presents the methodology and results of experimental studies of the formation of a spark discharge from a layer of deposited dust on a grounded electrode and the dependence of the degree of air purification on the voltage at the potential electrode. Based on the research results, the limiting density of the deposited dust and the need to clean the precipitation electrode from the deposited dust layer, as well as the use of spark protection circuits, were determined. It was also revealed that the level of fluctuation of the mains voltage practically does not affect the degree of pu

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26

Dali Ioseliani, Neli Kalabegashvili, Gulnara Balarjishvili, Liana Samkharadze, and Nino Nonikashvili. "Water purification from zinc ions using expanded perlite." World Journal of Advanced Research and Reviews 19, no. 1 (2023): 214–20. http://dx.doi.org/10.30574/wjarr.2023.19.1.1278.

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Adsorptive capacities of expanded perlite, prepared on the basis of natural mineral of Georgia – perlite, in the process of aqueous solution purification from Zn (II) ions, have been first studied in the work. The dependencies of adsorption degree and volume capacity on adsorbent dosage, contact time, adsorbate concentration and pH of solution medium have been studied. Experiments have been conducted under dynamic conditions. Optimum conditions of Zn(II) ion adsorption have been established. Maximal efficiency of adsorption degree under these conditions was equal to 93,6, while volume capacity

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27

Tetyana, Bojko, Skladannyy Denys, Zaporozhets Julia, and Plashykhin Sergii. "Application of simulation modeling for assessment of environmental safety of soils." Technology Audit and Production Reserves 1, no. 3(51) (2020): 25–30. https://doi.org/10.15587/2312-8372.2020.198785.

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<em>The object of</em><em> research</em><em> is the ecological safety of soil pollution by an industrial enterprise. The general geofiltration process could be considered as a complex of individual physical and physico-chemical processes. During the study, the individual components of the geofiltration process were considered and a reasonable choice of mathematical models for their description is made. One of the problems is the soil type influence assessment and the corresponding geofiltration scheme on the overall filtration processes results. The classification of soils according

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28

Glubokaya, Aleksandra S., Olga V. Atamanova, Elena I. Tikhomirova, Artem A. Podoksenov, and Zoya A. Simonova. "Development and justification of new technologies purification of water environments from pollution by heavy metals." RUDN Journal of Ecology and Life Safety 30, no. 4 (2022): 498–510. http://dx.doi.org/10.22363/2313-2310-2022-30-4-498-510.

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An actual trend in applied ecology is the development and implementation of innovative environmental protection technologies. Modern methods for extracting heavy metal ions from industrial wastewater are quite diverse. The purpose of the study was to develop and justify new technologies for purification of aqueous media, including adsorption purification, from heavy metal ions (by the example of Ni2+ and Cd2+ ions). Laboratory studies have established that the degree of adsorption extraction of Ni2+ ions by the sorption material from bentonite modified with carbon nanotubes and fired at a temp

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29

AKBAYEVA, Lyailya, Zhumabike Bakeshova, Nurgul Mamytova, et al. "THE ABILITY OF NATURAL WATERS TO SELF-PURIFY, DEPENDING ON THE DEGREE OF CHEMICAL POLLUTION." Eurasian Journal of Ecology 79, no. 2 (2024): 32–41. http://dx.doi.org/10.26577/eje.2024.v79.i2-03.

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Self-purification in surface waters involves many components of the aquatic ecosystem, among which aquatic microorganisms play an important role, which perform the function of primary oxidation or reduction of pollutants entering the reservoir. However, a number of chemicals that pollute lakes and rivers inhibit the activity of bacterioplankton. This leads to the fact that the ability of the reservoir to self-cleaning is sharply violated and its degradation occurs. The activity of the process of destruction of organic substances can be judged by the oxygen parameters in the water of rivers and

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Anarbayev, A. A., B. N. Kabylbekova, B. M. Smailov, and G. M. Ormanova. "Methods for purifying table salt from the Suzak deposit." Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources 338, no. 3 (2025): 5–12. https://doi.org/10.31643/2026/6445.23.

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One of the pressing issues today is common salt purification from harmful impurities and production of salt for medical and household purposes. To obtain high-purity sodium chloride salt, it is necessary to develop more effective methods for purifying salt from impurities. The article discusses modern methods for purifying Suzak deposit common salt from harmful impurities. The main goal of the scientific work is to study the methods of purifying sodium chloride from impurities. The common salt raw material composition was studied. The content of impurities of Са2+, Мg2+ and SO42- ions and heav

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31

Litvincev, Yuriy, and Evgeny Trapeznikov. "THE PROBLEM OF PURIFICATION OF COMMERCIAL BENZENE FROM SULFUR IMPURITIES AT THE «PYROTOL» UNIT." Modern Technologies and Scientific and Technological Progress 2023, no. 1 (2023): 37–38. http://dx.doi.org/10.36629/2686-9896-2023-1-37-38.

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Dmitriev, Andrey V., Vadim E. Zinurov, and Oksana S. Dmitrieva. "Collecting of finely dispersed particles by means of a separator with the arc-shaped elements." E3S Web of Conferences 126 (2019): 00007. http://dx.doi.org/10.1051/e3sconf/201912600007.

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This paper includes the description of a separator, developed by the authors for the gas flow purification from the finely dispersed particles. The authors also studied the influence of the separator dimensions and the dusty gas flow rate on the degree of its purification from the finely dispersed particles, as well as on the change in the hydraulic resistance of this apparatus. This paper also shows that the main forces that make the greatest contribution to the purification of the gas flow from the finely dispersed particles are centrifugal and inertial. Moreover, the dependencies of the pur

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Peregudov, Yu S. "Magnetic Oil Sorbents based on Technogenic and Natural Inorganic Materials." Ecology and Industry of Russia 25, no. 2 (2021): 34–40. http://dx.doi.org/10.18412/1816-0395-2021-2-34-40.

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The results of the study of the fractional composition, physicochemical and sorption characteristics of technological calcium carbonate and glauconite are presented. It is shown that the fraction of technological chalk with a particle size of more than 0.125 mm absorbs the greatest amount of oil and gasoline. The oil is better absorbed by the fraction of chalk with a particle size of 0.1–0.25 mm. For glauconite, oil sorption increases with decreasing particle size. The complete absorption of oil on the solid surface by the glauconite sorbent occurred within 2 min and about 10 min by the carbon

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Rovkina, Kseniya Igorevna, Sergey Vladimirovich Krivoshchekov, Artem Mikhaylovich Guriev, Mekhman Suleyman ogly Yusubov, and Mikhail Valer'yevich Belousov. "DEVELOPMENT OF METHODS FOR OBTAINING POLYSACCHARIDES FROM BIRCH LEAVES (BETULA PENDU-LA ROTH., BETULA PUBESCENS EHRH.)." chemistry of plant raw material, no. 3 (May 15, 2019): 23–31. http://dx.doi.org/10.14258/jcprm.2019035420.

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The development of a complex technique for the extraction and purification of polysaccharides from birch leaves (Betula pendula Roth.,Betula pubescens Ehrh.) (PSfB) was the purpose of this study. The following characteristics were used as criteria for evaluating the effect of the parameters studied on the production of target substances: yield of PSfB (gravimetric method), protein content (spectrophotometric method), molecular weight distribution (high performance exclusion chromatography) and degree of purification from low molecular weight impurities (LMWI) (IR) spectroscopy).During the expe

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Ruzhitskaya, Olga A., and Elena S. Gogina. "Removal of Phosphates from Wastewater and Intensify the Biological Wastewater Treatment Process from Organic Pollution." Advanced Materials Research 919-921 (April 2014): 2153–56. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.2153.

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The paper presents the results of research studies to determine the degree of influence of reinforced material on the purification process wastewater from phosphates and organic contaminants. The paper presents the results of mathematical description of the laws of the biological purification. Obtained activation coefficient. Shows the effect of reinforced material for phosphate removal from wastewater. Shows the effect of reinforced material on sludge dose and sludge index.

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36

المعلة, جميل حليل, and دعاء راهي البو كلل. "The concept of divine beauty and adoration in Plotinus' moral philosophy." Kufa Journal of Arts 1, no. 33 (2017): 265–84. http://dx.doi.org/10.36317/kaj/2017/v1.i33.6026.

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Likewise, Plotinus saw that goodness is the highest degree of beauty, and that beauty is goodness, and it must be present in the one (the first), and it is issued directly to the mind, and from the mind to the soul. The ultimate goal for all people is to reach the highest degrees of beauty. Goodness and beauty are linked together and inseparable, as they are associated with religious rituals. Reaching religious purification is achieving goodness and beauty.

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Li, Xinping, and Xiling Zhou. "Effect of Pore Structure on Purification of Pervious Concrete." Journal of Architectural Research and Development 9, no. 2 (2025): 1–8. https://doi.org/10.26689/jard.v9i2.10126.

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By adding zeolite aggregate with good adsorption properties, different mix ratios of added zeolite pervious concrete (ZPC) were designed to compare the water purification effect of ordinary pervious concrete and water purification tests that were conducted. The pore characteristics of the pervious concrete were identified using three-dimensional reconstruction software and the relationship between pore structure and water purification performance was quantified by gray entropy correlation analysis. The results showed that the purification efficiency of zeolite-doped pervious concrete was 17.6%

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Zhou, Zhen Zhu, Wei He, Chun Dan Zhu, and Ying Wang. "Entanglement Purification for Quantum Repeater." Advanced Materials Research 679 (April 2013): 95–100. http://dx.doi.org/10.4028/www.scientific.net/amr.679.95.

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We study various kinds of entanglement purification schemes for quantum repeater distributed maximally entangled pairs over long distances. We then investigate two protocols in detail, and present that they have the same essence in principle but operated by different means. In order to compare the two different protocols, we introduce a parameter represented the admixture degree of system to show the optimal protocol that is obtainable. Finally, we present that the efficiency of purification protocol relate to the fidelity of the initial states of the system. For the initial state of the syste

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Rüffer, Tobias, Dinara Nurpeisova, Zhanar Jakupova, et al. "Synthesis and purification of metallooctachlorophthalocyanines." Zeitschrift für Naturforschung B 72, no. 8 (2017): 589–601. http://dx.doi.org/10.1515/znb-2017-0068.

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AbstractA detailed synthetic procedure based on the use of urea, dichlorophthalic acid, respective transition metal halides and [NH4]2[MoO4] as a catalyst in the melt or by using 1,2,4-trichlorobenzene as a high-boiling inert solvent is described to gain 2,3,9,10,16,17,23,24-metallooctachlorophthalocyanines (MPcCl8compounds with M=Mn, Fe, Co, Ni, Cu). In cases that a first purification by subsequent treatment of the crude materials with HCl, NaOH and HCl would not give rise to analytically pure compounds, a second novel purification by using pyridine is described. The degree of purity, exceedi

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Nafikova, Elvira, Dmitry Alexandrov, Arina Sidorova, Azalia Aitkulova, and Kamilla Chuvashaeva. "Evaluation of effluent treatment efficiency by fractal analysis." E3S Web of Conferences 460 (2023): 08004. http://dx.doi.org/10.1051/e3sconf/202346008004.

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The paper proposes a comparative evaluation method of effluent treatment efficiency for different effluent treatment facilities using fractal analysis. The smallest value of the fractal dimension of the field of compass-diagrams of the multiplicity of exceeding the maximum permissible concentration (hereinafter - MPC) by pollutants of effluent is taken as an integral criterion of the effluent purification degree. Pharmaceutical industry enterprises purification method of modeled values of treatment systems effluent indicators has been tested.

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41

Chavliyeva, Farog’at. "STUDY OF OBTAINING POTASSIUM HYDROXIDE BY ELECTROCHEMICAL METHOD ON THE BASES OF FLOTATION AND HALLURGIC POTASSIUM CHLORIDE." New Materials, Compounds and Applications 8, no. 2 (2024): 244–53. http://dx.doi.org/10.62476/nmca82244.

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To substantiate the process of obtaining potassium chloride, the compositions of white crystalline and flotation potassium chloride were studied. Studies have been carried out on the purification of the initial solution from impurities of oxides of two and trivalent metals, in particular, calcium and magnesium, which adversely affect the electrolysis process. The degree of purification when purifying a solution from calcium and magnesium ions increases with an increase in the rate of potassium hydroxide and carbonate to calcium and magnesium ions from 100 to 122%. In the case of using white cr

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Nurpeisova, D., A. Тashenov, Zh Jakupova, S. Dosmagambetova, and M. Omarova. "Synthesis of octochlorine-substituted complexes of cobalt(II) and copper(II) with phthalocyanine." BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series 142, no. 1 (2023): 22–30. http://dx.doi.org/10.32523/2616-6771-2023-142-1-22-30.

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A modified method for the synthesis of metallooctachlorophthalocyanines and methods for their purification based on their sequential treatment with hydrochloric acid (10%) sodium hydroxide (2M), then again with hydrochloric acid (10%), pyridine (O.S.C.) in 1,2,4-trichlorobenzene as a solvent is presented. As a result, the degree of purification of copper ion complexes was achieved, 99% versus the best result using methods known in the literature 93%, for cobalt the degree of purity was 98% versus 88%. The yield of the products is also higher than in the known methods and amounted to 78, cobalt

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43

Nurpeisova, D., A. Тashenov, Zh Jakupova, S. Dosmagambetova, and L. Omarova. "Synthesis of octochlorine-substituted complexes of cobalt(II) and copper(II) with phthalocyanine." BULLETIN of L.N. Gumilyov Eurasian National University. CHEMISTRY. GEOGRAPHY. ECOLOGY Series 142, no. 1 (2023): 20–28. http://dx.doi.org/10.32523/2616-6771-2023-142-1-20-28.

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A modified method for the synthesis of metallooctachlorophthalocyaninesand methods for their purification based on their sequential treatment with hydrochloric acid (10%) sodium hydroxide (2M), then again with hydrochloric acid (10%), pyridine (O.S.C.) in 1,2,4-trichlorobenzene as a solvent is presented. As a result, the degree of purification of copper ion complexes was achieved, 99% versus the best result using methods known in the literature 93%, for cobalt the degree of purity was 98% versus 88%. The yield of the products is also higher than in the known methods and amounted to 78, cobalt

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44

Samchenkо, Dmitry, Mykola Monastyrov, Gennadii Kochetov, Anastasia Snitko, and Bogdan Yemchura. "A study of wastewater purification from Zn2 + ions by nanosorbent, obtained by electroerosion dispersion." Problems of Water supply, Sewerage and Hydraulic, no. 36 (October 5, 2021): 56–61. http://dx.doi.org/10.32347/2524-0021.2021.36.56-61.

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Сurrent state and efficiency of existing sorbtion methods of industrial wastewater treatment are considered. The influence of important parameters for sorbtion process - ratio of metal ion and nanosorbent concentrations in solution, as well as the method of sorbent addition into wastewater on degree of its purification was studied. The most effective results of water purification were achieved with usage of freshly obtained powder of electroerosive dispersion (EED) of iron in water in the form of a suspension at ratio of the concentration of Zn2+ ions and nanosorbent powder 1:10. It Under such

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Евстафьев (Evstaf'ev), Сергей (Sergei) Николаевич (Nikolaevich), and Куанг Кыонг (Kuang Kyong) Хоанг (Khoang). "ULTRASONIC TREATMENT WHEAT STRAW IN THE ENVIRONMENT 1-BUTYL-3-METHYLIMIDAZOLIUM CHLORIDE." chemistry of plant raw material, no. 1 (November 23, 2017): 5–12. http://dx.doi.org/10.14258/jcprm.2018012218.

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The development of environmentally safe technology for processing lignocellulosic raw materials with the separation of polysaccharide and lignin fractions for subsequent use is an actual problem, a solution of which is possible when using ionic liquids as a solvent. To intensify the processing process, the possibility of using ultrasonic irradiation in the environment of 1-butyl-3-methylimidazolium chloride was studied. The results of the research of the influence of ultrasound power, temperature and processing time on the yield of fractions and the degree of purification of cellulose from imp

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Burdette, D., and J. G. Zeikus. "Purification of acetaldehyde dehydrogenase and alcohol dehydrogenases from Thermoanaerobacter ethanolicus 39E and characterization of the secondary-alcohol dehydrogenase (2° Adh) as a bifunctional alcohol dehydrogenase-acetyl-CoA reductive thioesterase." Biochemical Journal 302, no. 1 (1994): 163–70. http://dx.doi.org/10.1042/bj3020163.

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The purification and characterization of three enzymes involved in ethanol formation from acetyl-CoA in Thermoanaerobacter ethanolicus 39E (formerly Clostridium thermohydrosulfuricum 39E) is described. The secondary-alcohol dehydrogenase (2 degrees Adh) was determined to be a homotetramer of 40 kDa subunits (SDS/PAGE) with a molecular mass of 160 kDa. The 2 degrees Adh had a lower catalytic efficiency for the oxidation of 1 degree alcohols, including ethanol, than for the oxidation of secondary (2 degrees) alcohols or the reduction of ketones or aldehydes. This enzyme possesses a significant a

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47

Bian, Wei-dong, Hua-rui Zhang, Ming Gao, et al. "Influence of yttrium and vacuum degree on the purification of K417 superalloy." Vacuum 152 (June 2018): 57–64. http://dx.doi.org/10.1016/j.vacuum.2018.02.031.

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Burievich, Buriev Sulaymon, and Yuldoshov Laziz Tolibovich. "Biological Treatment of Wastewater from Production Enterprises." International Journal of Biology 12, no. 3 (2020): 14. http://dx.doi.org/10.5539/ijb.v12n3p14.

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The article provides information on the growth, development, reproduction and degree of purification of wastewater from organo-mineral substances of the high water plant pistia (Pistia stratiotes L) oil refining plant wastewater.

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Bulimaga, Constantin, Vladimir Mogildea, Andrian Tugulea, and Petru Prodan. "Assessment of the dynamics of the degree of surface water pollution in the Cahul urban ecosystem." Studia Universitatis Moldaviae. Seria Științe ale Naturii, no. 1(181) (June 2025): 203–11. https://doi.org/10.59295/sum1(181)2025_26.

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Studies indicate that at all wastewater treatment plants(WWTP) in the Southern Region, the entire volume of wastewater that reaches the WWTP is subject to insufficient purification. The dynamics of the concentration of pollutants in the water of the Frumoasa River in the Cahul urban ecosystem indicates that the city is undergoing a gradual process of river water pollution. The physical and chemical parameters of the quality of spring water in the city of Cahul confirm that they do not exceed the MAC, which demonstrates that the anthropogenic impact does not influence the quality of groundwater

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KUSUMANINGSIH, TRIANA, ABU MASYKUR, and USMAN ARIEF. "Synthesis of chitosan from chitin of escargot (Achatina fulica)." Biofarmasi Journal of Natural Product Biochemistry 2, no. 2 (2004): 64–68. http://dx.doi.org/10.13057/biofar/f020204.

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Chitosan has been made from chitin that was deacetylated from escargot (Achatina fulica). The purification of chitin was done by deproteination, demineralization, and depigmentation. Identification of chitin and chitosan was done by FTIR (Fourier Transform Infrared) and XRD (X-Ray Diffraction). Characterization of chitosan was determined by water and mineral content, molecular weight, polymerization degree and degree of deacetylation. The result of research was obtained chitosan 6,95%, crystal, white brownish color, odorless, 3,26Â±0,45% water content, 10,11Â±0,38% mineral content, 889,78 mole

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