The scientific-technical journal 'Digital Technologies in Industry' specializes in publishing the latest research articles on the introduction of new technologies in the industrial sector, their practical applications, and innovative approaches. Our journal focuses on scientific research and technical studies in the fields of industrial process automation, artificial intelligence, digital control systems, and other advanced technologies. Our journal provides a platform for experts, scientists, and practitioners to share knowledge and experience on the successful implementation of modern technologies in industry. The scientific-technical journal "Digital Technologies in Industry" (e-ISSN: 3030-3214) is recommended, based on Resolution No. 358 of the Higher Attestation Commission under the Ministry of Higher Education, Science, and Innovation of the Republic of Uzbekistan dated July 30, 2024, for publishing the main scientific results of dissertations in the following specializations for candidates for the academic degrees of Doctor of Philosophy (PhD) and Doctor of Science (DSc) in technical sciences: ✅05.00.00 - Technical Sciences ✅04.00.00 - Geological and Mineralogical Sciences ✅02.00.00 - Chemical Sciences (E)ISSN: 3030-3214 DOI: 10.70769/3030-3214.SRT
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THEORETICAL FOUNDATIONS AND PRACTICAL APPROACHES TO INDUSTRIAL WASTEWATER TREATMENT BASED ON THE COAGULATION PROCESS
This article examines the scientific foundations and advanced technological approaches to the coagulation–flocculation process widely used in the treatment of industrial wastewater. Coagulation is considered an effective physicochemical method that enables the destabilization of colloidal and finely dispersed particles, followed by their aggregation into larger flocs and subsequent sedimentation. The study provides a comparative analysis of various types of coagulants (metal-based and non-metal-based), their properties, and application efficiency based on existing scientific sources. Additionally, the main factors affecting process efficiency, including pH conditions, coagulant dosage, temperature, mixing conditions, and characteristics of colloidal systems, are systematically analyzed. Based on the physicochemical parameters of different industrial wastewaters, the applicability of the coagulation process is evaluated. The obtained results serve as a scientific basis for improving water treatment technologies, determining optimal operating conditions, and developing effective technological solutions.
Ecology, Labor Protection, and Industrial Safety
Copyright (c) 2026 Ikromov, A.A., Urinov, U.K., Fayziyev, J.B. (Muallif) https://creativecommons.org/licenses/by/4.0
EXPERIMENTAL ASSESSMENT OF THE SENSITIVITY OF THE SMART CHANNEL DEVICE AND THE MINIMUM WATER DISCHARGE
In this study, the sensitivity and minimum water discharge of the “Smart Channel” device, designed for measuring flow in open channels, were experimentally evaluated. The relevance of the research is justified by the need for rational water resource management in irrigation systems, accurate water accounting, and reliable detection of low discharges. The experiments were conducted in the “Hydraulics and Hydrometry” laboratory of “Smart Solution System” LLC, located in the Kuyichirchik district of the Tashkent region. A 60×60 sm prototype of the “Smart Channel” device was selected as the research object. The operating principle of the device is based on the velocity–area method, where discharge is determined using the average flow velocity and the cross-sectional area. The experimental results showed that for the 60×60 sm “Smart Channel” device, the average sensitivity threshold is 0.45 sm/s, while the minimum recorded discharge is 0.269 L/s. The measurement accuracy of the device was evaluated by comparison with a reference electromagnetic flow meter and the volumetric method. According to the results, the error of the “Smart Channel” device ranged from +2.47% to -2.48% relative to the reference flow meter, and from +2.43% to -2.47% relative to the volumetric method. The obtained results confirm that the “Smart Channel” device can be effectively applied for measuring low discharges and maintaining water accounting in open channels. The findings provide a scientific basis for determining the minimum measurable discharge, defining the sensitivity threshold, and improving calibration methodologies.
Copyright (c) 2026 Otаxonov, M.Y., Zokirov, I.B., Toshtemirov, Sh.A., Nazarov, U.X. (Muallif) https://creativecommons.org/licenses/by/4.0
EVALUATION OF COMPOSITIONAL STRUCTURAL CHANGES IN TERPOLYMERIZATION OF A TERNARY SYSTEM BASED ON EXPERIMENTAL DATA AND KINETIC MODELING
This study investigates the kinetics of terpolymerization and structural changes in the TDMA–styrene–maleic anhydride system based on experimental data and kinetic modeling. Increasing the initiator concentration from 16.8×10⁻⁶ to 51.3×10⁻⁶ mol·L⁻¹ led to an increase in conversion from 6.4% to 15.2% and reaction rate from 4.075×10⁻⁶ to 8.965×10⁻⁶ mol·L⁻¹·s⁻¹. It was found that increasing styrene content enhances the reaction rate from 3.11×10⁻⁶ to 11.07×10⁻⁶ mol·L⁻¹·s⁻¹. At low conversion, the composition remains close to the initial feed; however, compositional drift is observed in some systems (MA fraction increases from 0.50 to 0.70). The experimental results show good agreement with the model (±0.02–0.04).
04.00.00 - Geology and Mineralogy Sciences
Copyright (c) 2026 Mavlonov, Sh.B., Fozilov, S.F. (Muallif) https://creativecommons.org/licenses/by/4.0
THE IMPORTANCE OF AEROSPACE MAPPING METHODS IN OIL AND GAS FIELD EXPLORATION
This article presents a comprehensive and systematic analysis of the lithological composition, bedding characteristics, and facies variability of Devonian deposits widely distributed in the Quljuqtov Mountains. Particular attention is paid to the mineralogical and petrographic composition of terrigenous, carbonate, and volcanogenic rocks, as well as to their structural–matrix features and stratigraphic position. Rhythmic alternation of layers, facies zonation, and the characteristics of organogenic rock formation within the Devonian deposits are interpreted in close connection with the paleogeographic conditions of sedimentation. The obtained data indicate that during the Devonian period shallow-marine, deltaic, and reef-platform environments successively predominated in the study area. In addition, the relationship between sediment accumulation processes and tectonic activity and volcanism is substantiated on a scientific basis. The results of the study contribute to the reconstruction of the geological evolution of the Devonian complex of the Quljuqtov Mountains, the determination of its position within the stratigraphic framework, and a deeper understanding of the stages of paleogeographic development of the region. The conclusions of the research are of significant scientific importance for regional geology, stratigraphy, and paleogeography.
Copyright (c) 2026 Berdimuratova, G.P., Kurbonova, M.M. (Muallif) https://creativecommons.org/licenses/by/4.0
GEOLOGICAL STRUCTURE AND PROSPECTS OF OIL AND GAS OUTPUT OF JURASSIC CARBONATE DEPOSITS IN THE UZUNKUDUK AREA
The article discusses the geological structure and petroleum potential of the Upper Jurassic carbonate deposits in the Uznkuduk area (Kashkadarya region, Uzbekistan). Based on integrated interpretation of 2D/3D seismic data and results from exploration drilling, the structural model of the field has been refined, reef structures and anomalous zones with improved reservoir properties have been identified. Locations for three exploration wells are proposed to assess the hydrocarbon potential of the identified anomalies.
Copyright (c) 2026 Qurbonov, Sh.B., Yuldashev, N.N., Kirgizov, I.Q., Jo‘rayev, F.O. (Muallif) https://creativecommons.org/licenses/by/4.0
INTEGRATED GEOLOGICAL AND ECONOMIC ASSESSMENT OF GROUNDWATER RESOURCES
The article analyzes the natural-geological characteristics and economic essence of groundwater based on an integrated approach. The patterns of hydrogeological formation, lithological and filtration properties of aquifers, and mechanisms of natural recharge are examined. The theoretical foundations of the economic evaluation of water resources as an economic category are considered. The necessity of integrating geological and economic factors in groundwater assessment is substantiated. The importance of hydrogeological monitoring, scientifically justified determination of exploitable reserves, and principles of sustainable use is highlighted. The research results are aimed at developing a comprehensive geological and economic assessment of groundwater resources and ensuring their rational utilization.
Copyright (c) 2026 Yarboboyev, T.N., Rabbimov, J.Sh., Jamilov, B.B. (Muallif) https://creativecommons.org/licenses/by/4.0
STUDY OF FACTORS INFLUENCING THE EFFECTIVENESS OF ABSORPTIONAL GAS PURIFICATION
It was studied that the increase in the process of absorption purification of natural gas from acidic components is closely related to hydrodynamic, geometric, and physicochemical factors, as well as the location, configuration, and direction of the colliding axes of the nozzles within the column. Based on such problems, studies were conducted on geometric factors, physicochemical factors related to the fact that the influence of certain factors creates serious difficulties in experimental studies, the influence of phase density and viscosity, and collision movement processes in turbulent flows.
Copyright (c) 2026 Dustqobilov, E.N. (Muallif) https://creativecommons.org/licenses/by/4.0
In this article, methods for absorbing natural gases from acidic components are used, while the efficiency of flow direction in nozzle absorbers largely depends on the shape of the nozzle used. For this purpose, various methods for activating mass transfer in devices with contact nozzles have been proposed. It has been established that the modern theory of the elementary mass transfer act allows for the theoretical determination of the mass transfer coefficient for a limited range of hydrodynamic regimes and interphase surface shapes, which differ significantly from the operating conditions of industrial nozzle columns.
Copyright (c) 2026 Dustqobilov, E.N., Yuldashev, T.R. (Muallif) https://creativecommons.org/licenses/by/4.0
DIURNAL VARIATIONS OF THE MAGNETIC FIELD AT THE YANGIBAZAR GEOPHYSICAL RESEARCH OBSERVATORY DURING PERIODS OF STRONG MAGNETIC STORMS
This paper analyzes the mean daily variations of the Earth’s magnetic field recorded at the Yangibazar Geophysical Research Observatory during periods of strong magnetic storms (Kp ≥ 7, Dst ≤ −100 nT). The study examines the diurnal dynamics, amplitude variations, and phase shifts of the main magnetic field components—H, D, and Z. The obtained results show that during strong magnetic storms, daily magnetic variations significantly increase compared to background levels and undergo notable structural changes. The findings are of great importance for the assessment and possible forecasting of earthquakes, as well as for improving regional geophysical monitoring systems.
Copyright (c) 2026 Egamberdiyev, S., Husomiddinov, A., Ruzimboev, F., Jo‘rayev, E. (Muallif) https://creativecommons.org/licenses/by/4.0
IDENTIFICATION OF OIL AND GAS BEARING AREAS OF THE MESOZOIC-CENOZOIC DEVELOPMENT OF STRUCTURES IN THE CENTRAL PART OF THE BUKHARA-KHIVA OIL AND GAS REGION
The article presents the results of the analysis of the age and spatial relationships of local structures of the third rank formed at various stages of the Mesozoic-Cenozoic history, the relationship between the spatial distribution of known hydrocarbon deposits and local structures of the third rank at various stages of the region's development, the results of the allocation of oil and gas-bearing areas taking into account the paleotectonic features of the Mesozoic-Cenozoic development of the region's structures. The article also presents a distribution of fields based on a third-rank structural plan, represented by local anticline structures—potential hydrocarbon traps in two aspects. Overall, based on paleotectonic data, oil and gas accumulation zones are identified, in which hydrocarbon fields are clustered in areas differing in age and inheritance, as well as reorganization and the emergence of new elements.
Copyright (c) 2026 Axmedov, X.R. (Muallif) https://creativecommons.org/licenses/by/4.0
STUDY OF THE WEAR OF PUMP FLOW SURFACES CAUSED BY SOLID PARTICLES IN MINE WATER
In this study, the process of hydro abrasive wear of pump flow surfaces was analyzed based on theoretical and experimental approaches. Pumps are widely used in ore mining operations to lift mine water containing solid mechanical impurities of various sizes to the surface. This leads to intensive wear of the main flow components such as impellers, guide vanes, and sealing rings. The reliability and energy efficiency of pump units largely depend on this wear process, making its in-depth study an актуal scientific problem.
Mining, Metallurgy, and Manufacturing Industry
Copyright (c) 2026 Xatamova, D.N., Yuldasheva, M.A. (Muallif) https://creativecommons.org/licenses/by/4.0
DEVELOPMENT OF A MULTISTAGE SUCTION AIR COOLING SYSTEM FOR RECIPROCATING COMPRESSORS AND INVESTIGATION OF ITS IMPACT ON ENERGY EFFICIENCY
The energy efficiency of reciprocating compressors largely depends on the initial thermodynamic state of the air entering the compressor, particularly its temperature. A high temperature of the suction air leads to a decrease in gas density, which increases the work required during the compression process and consequently results in higher electrical energy consumption. The aim of this study is to develop a multi-stage suction air cooling system for reciprocating compressors and to evaluate its effect on thermodynamic and aerodynamic characteristics using computational fluid dynamics methods. In the proposed technical solution, the suction air is cooled before entering the compressor through a series of sequentially arranged multi-stage tubular heat exchangers. The research was carried out using SolidWorks Flow Simulation software, where temperature and pressure fields were modeled. The simulation results showed that the temperature of the suction air decreases from 40 °C to 7–8 °C. This increases air density, reduces the work required for compression, and improves the energy efficiency of the compressor. At the same time, the pressure loss in the device ranges between 14–26 Pa, which indicates minimal hydraulic resistance. The obtained results confirm that the proposed multi-stage cooling system increases the volumetric efficiency of the compressor, reduces electrical energy consumption, and improves overall energy efficiency. The proposed technical solution can be applied in Reciprocating compressor, suction air, multi-stage cooling, heat exchanger, computational fluid dynamics, energy efficiency, volumetric efficiency, pressure loss.
Copyright (c) 2026 Yuldashev, E.U., Jo‘rayev, Sh.N. (Muallif) https://creativecommons.org/licenses/by/4.0
ANALYSIS OF TECHNOLOGICAL METHODS FOR IMPROVING THE COMPLETENESS OF BLASTHOLE UTILIZATION IN DRILLING AND BLASTING OPERATIONS IN UNDERGROUND MINE WORKINGS
The paper addresses modern technological approaches aimed at improving blasthole utilization and preventing the formation of unbroken bottom zones (“cups”) during drilling and blasting operations in underground mine workings. The physical mechanisms responsible for cup formation, including non-uniform explosive energy distribution, lack of free surfaces, and specific features of detonation wave interaction with the rock mass, are analyzed. Scientifically substantiated methods such as reverse initiation of blasthole charges, intentional overdrilling, application of air gaps, combined stemming, and preliminary physico-chemical weakening of the rock mass using surfactants are considered. It is shown that the integrated application of these methods makes it possible to increase the blasthole utilization coefficient to 0.90–0.95, reduce the specific explosive consumption, and improve face quality while simultaneously decreasing seismic and environmental impacts.
Copyright (c) 2026 Zairov, Sh.Sh., Nutfulloyev, G‘.S., G‘oyibnazarov, B.A., Ismatillayev, N.A. (Muallif) https://creativecommons.org/licenses/by/4.0
STUDY OF VARIOUS COMBINED SCHEMES FOR PROCESSING GOLD-BEARING ORES OF THE KAULDY DEPOSIT
This article analyzes technological solutions for maximizing the efficient extraction of valuable components from ore based on a study of the beneficiability of gold-bearing ores at the Kauldy deposit using various methods, including gravity and flotation concentration, as well as a combination of these methods. This involves smelting and cyanidation of concentrates at a copper smelter, while the waste is processed by cyanidation. However, it is necessary to consider the challenges of filtering the cyanide residue due to the high clay mineral content of the ore. Based on the results of laboratory studies, a flotation-cyanide circuit is recommended for the Kauldy deposit. This circuit includes grinding the ore to 90% -0.074 mm, two stages of rougher and scavenger flotation, cleaning flotation of the froth product, and cyanidation of the flotation tailings.
Copyright (c) 2026 Samadov, A.U., Nurmuhammedov, I.S., Xamidullayev, B.N., Hakimov, A.X. (Muallif) https://creativecommons.org/licenses/by/4.0
STUDY OF CYANIDATION PARAMETERS OF TECHNOLOGICAL SAMPLES OF GOLD-BEARING ORES FROM THE KAULDY DEPOSIT
This article presents the results of experimental studies on the chemical and rational analyses of the material composition of gold-bearing ores from the Kauldy deposit, as well as on the cyanidation of initial technological samples. According to the chemical analysis of the average ore sample, the average gold content was 3.08 с/u and the silver content was 2.438 c/u. In the ore sample, the proportion of free, cyanide-leachable gold was 90%, and that of silver was 91.36%; gold associated with Sb and As minerals and compounds accounted for 2.9%, silver for 1.23%; gold associated with iron and manganese carbonates and hydroxides accounted for 0.32%, silver for 0.82%; gold associated with sulfides (pyrite, arsenopyrite) accounted for 6.45%, silver for 2.47%; gold occurring as fine inclusions within quartz, aluminosilicates, and other acid-insoluble minerals accounted for 0.32%, while silver accounted for 4.16%. Tests were carried out on the direct cyanidation of the initial ore and beneficiation products. The Jinchan reagent (PRC) was used as a leaching agent as an alternative to sodium cyanide. Based on the experimental results, the optimal conditions for gold dissolution were determined. When the ore was ground to a particle size of −0.044 mm, with a sodium cyanide concentration of 0.07% (1.4 kg/t) and a leaching duration of 36 h, gold extraction into solution reached 90%, while silver extraction reached 88.36%. Experiments using the Jinchan reagent demonstrated that results comparable to those obtained using sodium cyanide can be achieved. When the ore was ground to −0.044 mm, with Jinchan reagent concentration of 0.3% (6 kg/t) and a leaching duration of 24 h under selective leaching conditions, gold extraction into solution reached 91.55% and silver extraction reached 91.72%.
Copyright (c) 2026 Samadov, A.U., Nurmuhammedov, I.S., Xaydarov, A.A., Jabborov, E.Y. (Muallif) https://creativecommons.org/licenses/by/4.0
MULTI-OBJECTIVE OPTIMIZATION MODEL FOR RECONSTRUCTION OF EARTHEN CANALS USING THE NSGA-II ALGORITHM
This article describes a multi-objective optimization model developed to determine the reconstruction parameters of earthen irrigation canals. The model incorporates hydraulic flow calculations using the Chezy–Manning equation, sediment transport calculations using the Engelund–Hansen sediment transport capacity formula, and filtration calculations using Pavlovskiy’s filtration formula. The model also calculates reconstruction and operation costs for combinations generated using the NSGA-II algorithm, based on current price levels. By applying the NSGA-II algorithm in the Python environment, the model generates parameter combinations and selects the most optimal parameters based on results that provide the minimum total cost. The model was tested in a case study of the Amu-Bukhara Machine Canal. The results made it possible to determine the optimal balance between reconstruction and operation costs.
Copyright (c) 2026 Xazratov, A.N., Sobirov, F.Ch. (Muallif) https://creativecommons.org/licenses/by/4.0
TOP 10 TRANSPORT TECHNOLOGIES AND INNOVATIONS IN 2025 FOR UZBEKISTAN
The article provides an overview of the ten most significant transport technologies that will determine global trends in 2025 and are of practical value for the development of Uzbekistan. It analyses the prospects for introducing innovations, taking into account national characteristics, with a focus on expanding the fleet of electric vehicles and the use of gas motor fuel. It considers issues related to the digitalisation of public transport and the creation of intelligent urban traffic management systems. The material contains practical recommendations for modernising the republic's transport infrastructure, aimed at improving energy efficiency, digitising public transport, environmental safety, introducing intelligent traffic management systems, and optimising logistics processes in the current economic conditions.
prospects for the automotive industry in Uzbekistan
Copyright (c) 2026 Mamasaliyeva, M.I. (Muallif) https://creativecommons.org/licenses/by/4.0
METHODS FOR ASSESSING RIVERBED STABILITY
To date, extensive field observations and laboratory experiments on the formation and movement of bedforms in channels with alluvial beds have been conducted in various scientific centers worldwide. These studies have yielded a large volume of experimental data. Although some researchers have attempted to generalize these data and present them as unified computational relationships, fully reliable and universal results on this issue have not yet been obtained. Analysis of the existing scientific literature shows that the problem of bedform movement in channels with alluvial beds remains one of the most complex and relevant challenges in open channel hydraulics. The results of analyzing the obtained experimental data and observations indicate that changes in wave parameters directly affect the geometric and kinematic characteristics of the bedforms. In particular, it has been observed that bedforms formed under the influence of wind waves have larger dimensions compared to those formed in steady-state channel flow. This is primarily attributed to the increase in shear stresses occurring at the channel bottom as a result of wave action. The increase in these stresses leads to the enlargement of bedform parameters. Based on the theory of bedform sediment transport in open channels, methods for calculating sediment transport in channels under steady and unsteady flow conditions have been improved. This approach allows for a more accurate description of the complex morphodynamic processes occurring at the channel bottom and enhances the reliability of the calculated results.
Copyright (c) 2026 G‘ayimnazarov, I.X., Mamarasulov, S.R., Toshmurodov, J.J. (Muallif) https://creativecommons.org/licenses/by/4.0
INFRARED (IR) SPECTROSCOPIC ANALYSIS OF A FLAME-RETARDANT MATERIAL BASED ON PVC MODIFIED WITH STABILIZERS AND FILLERS
This study investigates the physicochemical properties of a flame-retardant material based on polyvinyl chloride (PVC) modified with stabilizers and fillers. Composite materials consisting of PVC, dioctyl phthalate (DOF), melamine cyanurate (MCA), and talc were prepared and analyzed using infrared (IR) spectroscopy. The spectral analysis confirmed the presence of key functional groups such as C–H, C–Cl, C=O, N–H, and Si–O, indicating the successful incorporation of additives into the material structure. The results demonstrate that the modified PVC composites exhibit enhanced flame retardancy, reduced smoke emission, and improved mechanical properties.
Copyright (c) 2026 Abdirashidov, D.A. (Muallif) https://creativecommons.org/licenses/by/4.0
STUDY OF THE SYNTHESIS AND OPERATIONAL PROPERTIES OF OXYGEN-CONTAINING GASOLINE WITH ORGANIC ADDITIVES THAT INCREASE THE OCTANE NUMBER
In this study, organic additives that increase the octane number of oxygen-containing gasoline were synthesized using local raw materials such as isoamyl alcohol, phthalic anhydride, glycerin, and acetic acid. The optimal conditions for the synthesis process were determined. The structure of the synthesized compounds was confirmed using IR, PMR, and NMR spectroscopy methods. The effect of diisoamyl phthalate (DIAP) and triacetin (TA) additives on AI-80 gasoline showed a significant increase in octane number. The addition of 10% DIAP increased the octane number by 7.5 units, while 5% TA increased it by 4.3 units. The results demonstrate the feasibility of producing efficient and environmentally friendly oxygenated additives based on local raw materials.
Copyright (c) 2026 Berdiyev, S.A., Jovliyev, S.M., Turgʻunov, I.I., Nurqulov, F.N. (Muallif) https://creativecommons.org/licenses/by/4.0
SEM ANALYSIS OF THE MORPHOLOGICAL AND MICROSTRUCTURAL PROPERTIES OF WILD BARLEY CELLULOSE PROCESSED BY THE PLANETARY-ROLLER EXTRUSION METHOD
This article investigates the process of extracting cellulose from the stem of a non-traditional raw material source - wild barley (Hordeum murinum) - and examines the properties of the resulting product. The structural and morphological properties of the extracted cellulose were studied using Fourier-transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). A unique aspect of this research is the comparative analysis of the physicochemical indicators of the obtained sample against those of traditional cotton and flax celluloses. Analysis of the FTIR spectra confirmed the similarity of functional groups among the samples, while SEM images revealed the distinct fiber structure and micromorphology of wild barley cellulose. The results indicate that the quality indicators of wild barley cellulose are comparable to those of traditional raw materials, demonstrating its potential for use as an effective filler in polymer composites.
Copyright (c) 2026 Qarshiyev, N.X., Khusenov, A.Sh., Eshqurbonov, F.B., Abdullayeva, R.I. (Muallif) https://creativecommons.org/licenses/by/4.0
ISOLATION OF SUNFLOWER WAX AND STUDY OF ITS PHYSICOCHEMICAL PROPERTIES
This article presents the results of the isolation of sunflower wax and the study of its physicochemical properties, which provides general information about sunflower wax, their chemical composition, methods of extracting waxes from seeds and oil, as well as the influence of the concentration of the table salt solution and the precipitation temperature on the separation of the waxy substance from a mixture of waxy substance and pearlite. At the same time, detailed information is provided on the extraction of waxy substances from pearlite, the influence of the duration of pearlite precipitation on the yield of the waxy substance, the physicochemical indicators of the waxy substances extracted from the used pearlite, and the freezing method was used to extract waxy substances from sunflower oil.
Copyright (c) 2026 Umirova, Z.Sh., Axmedov, A.N., Xakimova, Z.A., Ruzibayev, A.T. (Muallif) https://creativecommons.org/licenses/by/4.0
PRODUCTION OF ORGANO-MINERAL FERTILIZERS BASED ON OFF-GRADE PHOSPHORITES AND SEWAGE SLUDGE
This study investigates the feasibility of producing organo-mineral fertilizers based on off-grade phosphorite mineralized mass and sewage sludge generated at biochemical municipal wastewater treatment facilities. Phosphorite–sludge mixtures were prepared at mass ratios ranging from 90:10 to 30:70 and chemically treated with 30% sulfuric acid at 50–90% of the stoichiometric requirement relative to calcium oxide. The resulting slurries were separated into liquid and solid phases, and the contents of total P₂O₅, organic matter, humic acids, and fulvic acids were determined. The results showed that increasing the phosphorite fraction led to higher phosphorus levels, whereas increasing the sludge fraction caused a pronounced rise in organic matter, particularly fulvic acids in the liquid phase. A higher sulfuric acid dosage enhanced phosphorus transfer to the liquid phase and promoted the formation of stable complexes with organic components. The study provides scientific justification for producing a fast-acting liquid fertilizer enriched with fulvic acids, as well as a slow-release solid organo-mineral fertilizer dominated by humic acids.
Copyright (c) 2026 Muxammatova, U.X., Temirov, O‘.Sh., Sharipov, S.Sh., Taxirova, N.B. (Muallif) https://creativecommons.org/licenses/by/4.0
IMPROVEMENT OF AGROECOLOGICAL MONITORING MAPS USING GIS
This article provides a comprehensive analysis of improving agroecological monitoring maps using Geographic Information Systems (GIS). Particular attention is paid to the development of digital cadastral maps for assessing the ecological condition of land plots, as well as their accuracy, completeness, and topological consistency. The methodological foundations of digital cartography, the capabilities of GIS technologies, and digitization processes are discussed. The study also highlights the important role of metadata, spatial data quality, and data management in enhancing the effectiveness of agroecological monitoring. The obtained results can be applied to rational land use, strengthening environmental control, and the development of modern digital cartographic products.
Copyright (c) 2026 Zuxurov, Y.T., Aralov, M.M., Jabborova, R.M., Umarova, M.N. (Muallif) https://creativecommons.org/licenses/by/4.0
METHODOLOGY FOR SPATIOTEMPORAL ANALYSIS OF GEOLOGICAL ENVIRONMENT TRANSFORMATION IN TECHNICALLY IMPACTED AREAS USING THE “CREDO ANALYSIS OF SPATIAL DATA” SOFTWARE
The article presents an approach for assessing the state of the geological environment in open-pit mining areas based on the transition from discrete geodetic monitoring to continuous mathematical modeling using the CREDO Spatial Data Analysis software. The principles of digital terrain modeling, deformation analysis, slope stability assessment, and volume calculation of displaced rock masses are described. The scientific novelty lies in integrating triangulation, GRID interpolation, web visualization, and solar exposure analysis to create digital models of technogenically disturbed areas and to improve geomechanical hazard prediction.
Copyright (c) 2026 Pavlovskiy, A.I., Kologrivko, A.A., Naryjnova, Y.Y., Bildyuk, Y.V. (Muallif) https://creativecommons.org/licenses/by/4.0
MONITORING OF SURFACE DEFORMATION CAUSED BY UNDERGROUND MINING ACTIVITIES USING THE INSAR TECHNIQUE BASED ON SENTINEL-1 IMAGERY
At the Khandiza polymetallic deposit located in the Sariosiyo district of Surkhandarya region, underground mining activities may lead to deformation of the earth’s surface. The geological complexity of the rock mass and the intensity of mining operations cause uneven spatial and temporal development of subsidence processes. In this study, InSAR technology based on Sentinel-1 satellite radar imagery with revisit periods of 7 and 18 days was applied. To minimize the effect of temporal decorrelation and enhance the detectable deformation gradient, SBAS (Small Baseline Subsets) and IPTA (Interferometric Point Target Analysis) algorithms were integrated. As a result of data processing, a spatially continuous deformation model of the deposit area was generated, and subsidence rates of up to several tens of centimeters per year were identified in actively mined zones. The analysis showed that the intensity and spatial distribution of deformations are closely related to mining depth, ore body thickness, and the system of tectonic faults.The monitoring results are of significant importance for assessing the stability of mining infrastructure, protecting surface structures, and ensuring industrial safety. The obtained data provide a scientific basis for remote monitoring of geodynamic processes and for improving environmental management at the Khandiza deposit.
Copyright (c) 2026 Botirov, Sh.S., Nomdorov, R.U., Abdisamatov, B.A. (Muallif) https://creativecommons.org/licenses/by/4.0
INFLUENCE OF MOLECULAR ARCHITECTURE OF SULFONATED CELLULOSE ON ITS ADSORPTION AND RHEOLOGICAL PROPERTIES IN MONTMORILLONITE DISPERSIONS
This study investigates the influence of the molecular architecture of sulfonated cellulose (linear and branched structures) on its adsorption behavior and rheological properties in montmorillonite dispersions. A series of polymers with similar degrees of sulfonation but different macromolecular architectures were obtained through controlled synthesis. Molecular characteristics of the polymers were determined using gel permeation chromatography coupled with multi-angle light scattering, allowing evaluation of branching parameters. Adsorption studies revealed that linear polymers form denser adsorption layers on the montmorillonite surface, while branched polymers produce thicker adsorption layers with greater effective thickness. Rheological analysis demonstrated significant differences in the mechanism of action: linear sulfonated cellulose acts as an effective deflocculant, reducing the viscosity of the suspension, whereas branched structures induce the formation of an elastic three-dimensional network and significantly increase the storage modulus of the system. The results confirm that macromolecular architecture is a key factor enabling targeted control of the rheological behavior of dispersed systems.
Copyright (c) 2026 Nurmonov, S.E., Asranova, U.X. (Muallif) https://creativecommons.org/licenses/by/4.0
THE EFFECTIVENESS OF THE COMPLEXOMETRIC ANALYSIS METHOD IN MONITORING THE TECHNOLOGICAL PROCESSES OF THE KHANDIZA BENEFICIATION PLANT
In this article, the effectiveness of applying the method of complexometric analysis in managing the technological processes of the Khandiza Processing Plant was studied. As an object of research, a chemical-analytical method for determining the mass fraction of zinc (Zn) and lead (Pb) in samples obtained during the grinding and hydrocyclonization stages was developed. The work scientifically substantiated the high selectivity of complexometric titration, its efficiency as an express analysis, and its economic feasibility in production conditions. The research results show that the improvement of this method using modern reagents and masking agents allows for continuous monitoring of the technological process and optimization of enrichment indicators.
Copyright (c) 2026 Raxmanov, B.A., Eshqurbonov, F.B., Ashurova, A.A., Abdullayeva, R.I. (Muallif) https://creativecommons.org/licenses/by/4.0
ENHANCING THE RESISTANCE TO HYDROABRASIVE WEAR OF CENTRIFUGAL PUMP IMPELLERS BY STRENGTHENING THE SURFACE LAYER WITH FUNCTIONAL COATINGS
The article analyzes issues related to improving the operational reliability of centrifugal pumps widely used in the mining industry. It has been established that the primary causes of failures in pumping equipment operating in hydrotransport systems are hydroabrasive wear of impellers, casings, and covers. Based on statistical and experimental data obtained from pump stations of mining enterprises in Uzbekistan, the service life and failure causes of centrifugal pump components were investigated. The research results indicate that up to 70–75% of failures are associated with intensive wear of the surface layer of pump impellers. Methods for extending the service life of pump impellers through strengthening their surface layer with functional coatings are analyzed, and the advantages of cold gas-dynamic spraying technology are scientifically substantiated. Using this approach, metallic and metal–ceramic composite coatings are formed, which increase the resistance of impellers to hydroabrasive and cavitation effects. It is demonstrated that the application of such coatings makes it possible to reduce the operating costs of centrifugal pumps and significantly extend their service life.
Copyright (c) 2026 Kayumov, U.E., Pardayeva, Sh.S., Istamov, M.F. (Muallif) https://creativecommons.org/licenses/by/4.0
ENVIRONMENTAL IMPACT OF SPENT VANADIUM CATALYSTS AND METHODS FOR THEIR PROCESSING
This scientific article analyzes the condition of vanadium catalysts widely used in industry after their utilization, their environmental impact, and associated ecological risks. The physicochemical properties, toxicity, and mechanisms of distribution of vanadium compounds in soil, water, and air are elucidated. Additionally, methods for reducing environmental risks through recycling, neutralization of spent vanadium catalysts, and the implementation of alternative technologies are examined on a scientific basis.
Copyright (c) 2026 Mаmаrаimоv, G‘.F., Ergashev, H.Z. (Muallif) https://creativecommons.org/licenses/by/4.0