Study on dust suppression performance and field application of microbial dust suppressant based on microbial bacterial powder

Powder Technology, Journal Year: 2025, Volume and Issue: unknown, P. 120710 - 120710

Published: Feb. 1, 2025

Language: Английский

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Transformation in energy content of non-coking coals during differential settling beneficiation process: Implications for energy impact

Fuel, Journal Year: 2024, Volume and Issue: 377, P. 132662 - 132662

Published: Aug. 12, 2024

Language: Английский

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Title: Analysis of the effect of geometric and flow parameters on the separation efficiency of virtual impact separators: optimization based on response surface methodology

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

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Spatiotemporal spreading characteristics of dust aerosols by coal mining machine cutting and "partition/multi-level composite field" atomization dust purification technology

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 192, P. 386 - 400

Published: Oct. 18, 2024

Language: Английский

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Combined Approach Using Soil and Fly Ash Analysis to Understand the Environmental Consequences of Coal Combustion in Thermal Power Stations in the City

Water Air & Soil Pollution, Journal Year: 2025, Volume and Issue: 236(3)

Published: Jan. 30, 2025

Language: Английский

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Physicochemical Characteristics and Their Variation of Coal Dust Originating from Underground Mining Sites

ACS Omega, Journal Year: 2025, Volume and Issue: 10(6), P. 5379 - 5394

Published: Feb. 3, 2025

The physicochemical properties of coal dust significantly affect its toxicity and suppression efficiency. Currently, lab-crushed is commonly used for characterization instead the original (OCD) sampled from underground mining sites. This practice leads to an inaccurate understanding properties. To address this issue, study directly collected 18 OCD samples various sites characterized their properties, variation these parameters with rank were analyzed. results show: has a small particle size (average 26.49 μm), around 21% particles are under 10 μm. well-developed pore structure, average total volume 8.24 × 10-3 cm3/g specific surface area m2/g. have high oxidation degree, relative content oxygen-containing functional groups 45.71%. Between 32 measured OCD, moderately correlates R 0 6 highly 0. These mainly involve wettability, moisture content, elemental composition. findings present valuable insights into accurately assessing toxicology health risks in selecting efficient control technologies different mines.

Language: Английский

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Photothermal conversion and geochemical characterization of sulfur-rich lignite for non-conventional energy applications

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 26, 2025

Lignite has emerged as a critical material in contemporary energy portfolios, particularly electricity generation. However, this work explores lignite's potential beyond conventional uses, exploring on its conversion applications. In pioneering move, lignite samples have been directly utilized materials for photothermal applications, along with description of their geochemical features, such sulfur compositions, forms, and microscopic characteristics. Among the twenty that were geologically studied, two sulfur-rich (CS-1 CS-2) chosen to explore performance. The powder-XRD diffraction patterns CS-1 CS-2 reveal presence hexagonal phase carbon C1 kaolinite (Al2Si2O5(OH)4). Their XPS spectra indicate both organic metal-bonded sulfide moieties are present samples. implemented under 1 Sun irradiation, it was found exhibits superior light-absorbing properties, resulting enhanced water evaporation rates. addition, imaging also shows temperature increase 58.2 °C within 10 min lignite-coated membranes, compared 31 blank similar conditions. These findings can be leveraged untapped various technological domains, propelling global transition towards cleaner solutions.

Language: Английский

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Prediction of Dynamic Wetting and Encapsulation Mechanisms between Microdroplets and Rough Coal Dust Particles

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Coal dust poses a severe threat to workers' health, frequently causes accidents, and leads pneumoconiosis. As the mainstream method of suppression, wet spraying has attracted considerable attention due its efficiency. Understanding dynamic wetting encapsulation mechanisms between fog droplets coal particles is crucial for optimizing fine water mist removal technology, especially removing respirable smaller than 7 μm. However, studies on adhesion behavior impacting rough at microscopic scale are insufficient. Therefore, we adopted numerical simulation CLSVOF mesh deeply analyze collision micrometer from perspectives impact velocity, particle size ratio, roughness. The research indicated that when θ ≥ 1, FMES V = 20 m/s AEO9 30 can effectively encapsulate dust, with areas A 0.98 0.99, respectively. Furthermore, explored correlation established optimal discriminant formulas rebound-encapsulation critical equations. Moreover, greater protrusions surface retention initial gas film. provide theoretical guidance spray conditions, enhancing process parameter ranges practical use. They also have significant implications development droplet research.

Language: Английский

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Elemental Composition and Petrographic Analysis of Coal in the Sohagpur Coalfield With Implications for Environmental Management

Geological Journal, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

ABSTRACT This paper aims to provide an overview of the geochemistry and mineralogical characterisation coal within Sohagpur coalfield, located in Burhar–Amlai Sub Basin Madhya Pradesh, India. The study involves determination proximate ultimate analysis components, major elements, trace elements by using various techniques, including x‐ray diffraction (XRD), fluorescence (XRF), oranic petrography, Fourier transform infrared spectroscopy (FTIR) Scanning Electron Microscopy–Energy Dispersive Spectroscopy (SEM‐EDS). Petrological studies identify types macerals minerals associated coals, assess their concentration, examine association with found samples. Our research also delves into environmental implications these particularly those considered environmentally sensitive, such as As, Cd, Co, Cr, Mn, Ni, Pb, Th U. These findings are crucial for understanding potential impact utilisation coal. identified several sources coal, silicate (Quartz Feldspar), oxides (Haematite, Rutile Anatase), sulphides (Pyrite Marcasite), sulphates (Gypsum) carbonates (Calcite). Recognising sensitive components is vital they require mitigation or elimination before minimise risks. delivers a valuable geochemical composition characteristics highlighting importance considerations resources.

Language: Английский

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Impact of Mining and Allied Activities on Air Quality of a Mega Coal Mining Zone in India

Environmental Quality Management, Journal Year: 2025, Volume and Issue: 34(4)

Published: April 17, 2025

ABSTRACT This study investigates the spatial distribution of air pollutants, specifically Suspended Particulate Matter (SPM), PM 10 , and 2.5 in vicinity coal mines their associated operations. A total distinct sampling locations were systematically selected to analyze variability pollutants’ concentrations. The findings revealed elevated concentrations SPM at specific locations, with highest levels observed Coal Stock Yard (645 µg/m 3 ), near Siding 1&2 (425 South Balanda (424 3&4 5&6 (418 ). exhibited showed a similar pattern, notably high recorded (430 (290 (284 (249 However, displayed pattern compared indicating differential dispersion mechanisms for finer particulates. exceeded 24‐h average limits (600 ) set by Indian National Air Quality Standards mine regions following frequencies: 75% Yard, 16% Balanda, 12% 1&2, 8% 5&6. Similarly, surpassed prescribed limit (300 frequency 88% 37% 25% 20% comprehensive AERMOD‐based assessment quality parameters mining activities, vehicular movements, transportation overburden as primary contributors pollutant levels. model projected maximum 999 from all activities alone contributing up 984 . Overall, this highlight urgent need targeted mitigation strategies improve regions.

Language: Английский

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