27,507 results match your criteria coal


Arsenic and lead in soil: impacts on element mobility and bioaccessibility.

Environ Geochem Health 2021 Jun 15. Epub 2021 Jun 15.

Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic.

Long-term brown coal mining contributes to risk element contents in soils surrounding coal basins. However, there is a lack of bioaccessibility characterization of the risk elements in the soils at the impacted locations for estimation of the potential health risk, in relation to the effects of soil particle size and element origin. In this study, soils from different geological areas (geogenic vs. Read More

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Characterization and risk assessment of polycyclic aromatic hydrocarbon emissions by coal fire in northern China.

Environ Geochem Health 2021 Jun 14. Epub 2021 Jun 14.

State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, 100083, China.

Coal spontaneous combustion is known to emit a variety of organic carcinogenic pollutants, polycyclic aromatic hydrocarbons (PAHs) are the most prominent. The Wuda coalfield is a coal fire-prone region in northern China. Coal fire sponges (CFS), a sponge-like contaminated soil protrusion, occur widely in the Suhaitu mining area. Read More

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Source sector and fuel contributions to ambient PM and attributable mortality across multiple spatial scales.

Nat Commun 2021 06 14;12(1):3594. Epub 2021 Jun 14.

Institute for Health Metrics and Evaluation, University of Washington, Seattle, WA, USA.

Ambient fine particulate matter (PM) is the world's leading environmental health risk factor. Reducing the PM disease burden requires specific strategies that target dominant sources across multiple spatial scales. We provide a contemporary and comprehensive evaluation of sector- and fuel-specific contributions to this disease burden across 21 regions, 204 countries, and 200 sub-national areas by integrating 24 global atmospheric chemistry-transport model sensitivity simulations, high-resolution satellite-derived PM exposure estimates, and disease-specific concentration response relationships. Read More

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Organic compound source profiles of PM from traffic emissions, coal combustion, industrial processes and dust.

Chemosphere 2021 Sep 31;278:130429. Epub 2021 Mar 31.

School of Geography Earth and Environmental Science, University of Birmingham, Birmingham, B15 2TT, UK. Electronic address:

Eighteen polycyclic aromatic hydrocarbons (PAHs), 24 n-alkanes, 7 hopanes, 2 cholestanes, inorganic ions, elements and carbon fractions were analyzed in real-world source samples of PM (fine particulate matter) from traffic emissions (gasoline vehicles-TGV, diesel vehicles-TDV, diesel ship-TDS, and heavy oil ships-THOS), coal combustion (coal-fired industrial boilers-CIB, power plants-CPP, and residential stoves-CRS), industrial process emissions (cement industry-IPCI, and steel industry-IPSI), and dust (soil dust-DSD, road dust-DRD, and construction dust-DCD). High molecular weight (sum of five to seven rings) PAHs accounted for higher fractions for TGV (80%) and THS (61%) than for TDV, TDS and coal combustion sources (31%-47%). Hopane ratios (C29αβ/C30αβ) in coal related sources were mostly higher than 1, whereas that of traffic emissions was lower than 1. Read More

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September 2021

Design of a core-shell catalyst: an effective strategy for suppressing side reactions in syngas for direct selective conversion to light olefins.

Chem Sci 2020 Mar 18;11(16):4097-4105. Epub 2020 Mar 18.

Department of Applied Chemistry, School of Engineering, University of Toyama Gofuku 3190 Toyama 930-8555 Japan

An elegant catalyst is designed the encapsulation of metallic oxide Zn-Cr inside of zeolite SAPO34 as a core-shell structure ([email protected]) to realize the coupling of methanol-synthesis and methanol-to-olefin reactions. It can not only break through the limitation of the Anderson-Schulz-Flory distribution but can also overcome the disadvantages of physical mixture catalysts, such as excessive CO formation. The confinement effect, hierarchical structure and extremely short distance between the two active components result in the [email protected] capsule catalyst having better mass transfer and diffusion with a boosted synergistic effect. Read More

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Arsenic and Cadmium in Soils from a Typical Mining City in Huainan, China: Spatial Distribution, Ecological Risk Assessment and Health Risk Assessment.

Bull Environ Contam Toxicol 2021 Jun 14. Epub 2021 Jun 14.

School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, China.

In order to determine the ecological risk and health risk of Arsenic (As) and Cadmium (Cd) in soils from a typical mining city in Huainan, a total of 99 soil samples were collected and analyzed. The results showed that the concentrations of As and Cd ranged from 3.2 to 39. Read More

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Study on the Fluidization Quality Characterization Method and Process Intensification of Fine Coal Separation in a Vibrated Dense Medium Fluidized Bed.

ACS Omega 2021 Jun 25;6(22):14268-14277. Epub 2021 May 25.

School of Chemistry and Environmental Engineering, North China Institute of Science & Technology, Sanhe 065201, China.

Uniform and stable bed density is the basis of efficient coal separation by a gas-solid dense medium fluidized bed. The traditional air dense medium fluidized bed (ADMFB) is a kind of bubbling bed. By introducing vibration energy, a vibrated dense medium fluidized bed (VDMFB) with uniform and stable bed density can be formed, where the bubble merger is suppressed, the gas-solid contact can is strengthened, and the fluidization quality is also improved. Read More

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Gray Evaluation of Water Inrush Risk in Deep Mining Floor.

ACS Omega 2021 Jun 25;6(22):13970-13986. Epub 2021 May 25.

Department of Resource and Civil Engineering, Shandong University of Science and Technology, Taian 271019, China.

With the increase of the mining intensity of coal resources in China, the geological conditions of minefields have become more and more complex. The mining conditions of high pressure and high stress bring great challenges to the safe mining of coal resources. To accurately evaluate the risk of water inrush from the broken floor under high pressure and high stress, a gray evaluation model coupling the work breakdown structure (WBS), the risk-based supervision (RBS) theory, ordered binary comparison quantization method, and the center-point triangular whitenization weight function was proposed in this paper. Read More

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Investigation on the Distribution of Yimin Lignite Pyrolysis Products and the Stability of its Char.

ACS Omega 2021 Jun 21;6(22):13953-13961. Epub 2021 May 21.

China University of Mining and Technology, Beijing 100083, China.

This paper introduces the utilization of lignite in China and abroad and studies the influence of different process conditions on the pyrolysis products of lignite. The effects of pyrolysis temperature, residence time, and heating rate on the yield and stability of pyrolysis products were studied by standard lattice low-temperature distillation of coal. The results showed that the final pyrolysis temperature of lignite increases gradually, which is a key factor affecting the pyrolysis performance of lignite. Read More

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Optimization of Process Control Parameters for Fully Mechanized Mining Face Based on ANN and GA.

Comput Intell Neurosci 2021 25;2021:5557831. Epub 2021 May 25.

CHN Energy Information Technology Co., Ltd., Beijing 100011, China.

In the traditional optimization mathod, the process control parameters for fully mechanized mining face are determined by experts or technicians based on their own experience, which is lack of scientific basis, and need long production adjustment cycle. It is cause large loss, and not conducive to improving mine production efficiency. In order to solve this problem, the study proposes a process control parameter optimization method based on a mixed strategy of artificial neural network and genetic algorithm and uses a cross-entropy cost function to optimize an artificial neural network, which improves the learning speed and fitting accuracy of the neural network. Read More

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Antimicrobial and antifungal activity of soil actinomycetes isolated from coal mine sites.

Saudi J Biol Sci 2021 Jun 17;28(6):3553-3558. Epub 2021 Mar 17.

Department of Microbiology, Kakatiya University, Warangal 506009, Telangana, India.

In the current study, twenty-eight soil samples were collected from coalmine sites of Telangana, India. The isolates were purified and identified based on their culture characterization on oatmeal agar, glycerol asparagine agar, yeast extract-malt extract agar, inorganic salt starch agar, and starch casein agar medium. Further, the supernatant of all the isolates were tested for antimicrobial and antifungal activities. Read More

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Combustion wastes from thermal power stations and household stoves: A comparison of properties, mineralogical and chemical composition, and element mobilization by water and fertilizers.

Waste Manag 2021 Jun 14;131:136-146. Epub 2021 Jun 14.

Warsaw University of Life Sciences-SGGW, Institute of Agriculture, Department of Soil Science, Nowoursynowska St. 159 Building no 37, 02-776 Warszawa, Poland.

Wood and coal combustion generate wastes, which may negatively influence the environment. However, studies concerning coal combustion products serving as soil additives are currently in progress. Hence, this study was conducted to compare properties (mineralogy, metallic element content, and rare earth element content) of combustion wastes of different genesis (ash and soot after wood and coal combustion in households, ash from thermal power stations) and to assess possible risk posed to the soil environment when used as soil additive. Read More

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Crude oil biodegradation potential of biosurfactant-producing Pseudomonas aeruginosa and Meyerozyma sp.

J Hazard Mater 2021 Jun 2;418:126276. Epub 2021 Jun 2.

Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China; Department of Civil & Architectural Engineering, University of Wyoming, Laramie, WY 82071, USA. Electronic address:

This study investigates the potential of crude oil degrading capabilities of biosurfactant-producing strains of Pseudomonas aeruginosa MF069166 and Meyerozyma sp. MF138126. P. Read More

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Multi-functional carboxymethyl chitin-based nanoparticles for modulation of tumor-associated macrophage polarity.

Carbohydr Polym 2021 Sep 24;267:118245. Epub 2021 May 24.

Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China; State Key Laboratory of Separation Membranes and Membrane Process, School and Chemical Engineering & School of Environmental Science and Engineering, Tiangong University, Tianjin 300378, China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China. Electronic address:

Current challenge of using cytokines is its poor distribution and systemic side effects. To avoid this issue, we prepared the tumor-targeted and microenvironment-responsive nanocarriers (TRN), which were consisted of α-tocopheryl succinate (α-TOS) loaded mesoporous silica nanoparticles as cores, and surface-modified by thioketal-linkage, electrostatically coated with carboxymethyl chitin, and further anchored glucose-regulated protein 78-binding peptide as shells for encapsulating IL-12. TRN showed a size of 260 nm after encapsulated IL-12 and α-TOS with loading content of 0. Read More

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September 2021

Co-hydrothermal carbonization of swine manure and cellulose: Influence of mutual interaction of intermediates on properties of the products.

Sci Total Environ 2021 May 29;791:148134. Epub 2021 May 29.

School of Material Science and Engineering, University of Jinan, Jinan 250022, China. Electronic address:

Co-hydrothermal carbonization (HTC) of livestock manure and biomass might improve the fuel properties of the hydrochar due to the high reactivity of the biomass-derived intermediates with the abundant oxygen-containing functionalities. However, the complicated compositions make it difficult to explicit the specific roles of the individual components of biomass played in the co-HTC process. In this study, cellulose was used for co-HTC with swine manure to investigate the influence on the properties of the hydrochar. Read More

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Characteristics of migration and speciation of trace elements during co-processing of antibiotic residues in a circulating fluidized bed.

Environ Sci Pollut Res Int 2021 Jun 12. Epub 2021 Jun 12.

School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China.

In order to study the emission characteristics of the products during the blending of antibiotic residues in coal-fired power plants, blending tests were performed on a 140 t/h circulating fluidized bed boiler. It was found that during combustion, 64 to 87.6% of Cr, As, and Pb are concentrated in the fly ash, and 11. Read More

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Accumulation risk and source apportionment of heavy metals in different types of farmland in a typical farming area of northern China.

Environ Geochem Health 2021 Jun 11. Epub 2021 Jun 11.

Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China.

The types of land used for farmland can greatly influence the source and accumulation risk of heavy metals in soil. However, the apportioning quantitatively the source of soil heavy metals has been studied insufficiently, especially in terms of different types of farmland. In this study, a total of 252 soil samples were taken from dry land, paddy fields and greenhouse fields in the Jinyuan district of Taiyuan city, China, to assess the accumulation risk of heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn). Read More

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Metal-Organic Frameworks (MOFs) as methane adsorbents: From storage to diluted coal mining streams concentration.

Sci Total Environ 2021 Jun 4;790:148211. Epub 2021 Jun 4.

Catalysis, Reactors and Control Research Group (CRC), Department of Chemical and Environmental Engineering, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain. Electronic address:

Ventilation Air Methane emissions (VAM) from coal mines lead to environmental concern because their high global warming potential and the loss of methane resources. VAM upgrading requires pre-concentration processes dealing with high flow rates of very diluted streams (<1% methane). Therefore, methane separation and concentration is technically challenging and has important environmental and safety concerns. Read More

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Experimental and comparative study of Chinese commercial improved coal-fired cooking and space-heating stoves.

Environ Sci Pollut Res Int 2021 Jun 9. Epub 2021 Jun 9.

College of Engineering, Nanjing Agricultural University, Nanjing, 210031, Jiangsu, China.

The extensive use of traditional cooking stoves to meet daily cooking and heating requirements has highlighted the serious problem of indoor and outdoor air pollution. This study evaluates three improved cooking and heating stoves (ICHSs) and compared them with a traditional stove as a baseline reference. The stoves' performance regarding emission and thermal efficiency was evaluated with burning raw coal. Read More

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Landscape condition influences energetics, reproduction, and stress biomarkers in grizzly bears.

Sci Rep 2021 Jun 9;11(1):12124. Epub 2021 Jun 9.

Department of Veterinary Biomedical Sciences, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada.

Environmental change has been shown to influence mammalian distribution, habitat use, and behavior; however, few studies have investigated the impact on physiological function. This study aimed to determine the influence of landscape condition on the expression of target proteins related to energetics, reproduction, and stress in grizzly bears. We hypothesized that changes in landscape condition explains protein expression. Read More

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Appraising Mahallat Geothermal Region using thermal surveying data accompanied by the geological, geochemical and gravity analyses.

Sci Rep 2021 Jun 9;11(1):12190. Epub 2021 Jun 9.

University of Göttingen, Göttingen, Germany.

Mahallat Geothermal Region, located in the central part of Iran, is known as one of the largest low-temperature geothermal fields. In this study, Mahallat geothermal resource has been evaluated based on integrated geological, geochemical and geophysical analyses. Gravity data revealed three major negative anomaly zones. Read More

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The aryl hydrocarbon receptor at the forefront of host-microbe interactions in the skin: a perspective on current knowledge gaps and directions for future research and therapeutic applications.

Exp Dermatol 2021 Jun 9. Epub 2021 Jun 9.

Department of Veterinary and Biomedical Sciences, Center for Molecular Toxicology and Carcinogenesis, The Pennsylvania State University, University Park, Pennsylvania, 16802, USA.

The skin is home to a community of skin microbiota including bacteria, viruses and fungi, which are widely accepted to be of importance for skin homeostasis but also associated to skin diseases. Detailed knowledge on the skin microbiota composition and its changes in a number of skin diseases is available. Yet, specific interactions between microbes and the host skin cells or how they communicate with each other are less well understood. Read More

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[Analysis of Predictive Value of Laboratory Indexes for Malignant Lymphoma Patients with Bone Marrow Involvement].

Zhongguo Shi Yan Xue Ye Xue Za Zhi 2021 Jun;29(3):763-771

Department of Hematology, Wanbei Coal and Electricity Group General Hospital, Suzhou 234011, Anhui Province, China.

Objective: To analyze the influence of bone marrow involvement (BMI) in patients with malignant lymphoma (ML) on laboratory indexes, and evaluate the laboratory markers that can be used to predict/diagnose BMI.

Methods: The clinical characteristics and laboratory indexes of 137 ML patients were analyzed retrospectively, from which the indexes of BMI in ML patients was studied. The logistic regression analysis and receiver operating curve (ROC) were used to evaluate independent risk factors and predictors of BMI diagnosis in ML patients. Read More

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Evaluation of remediation of Cr(VI)-contaminated soils by calcium polysulfide: Long-term stabilization and mechanism studies.

Sci Total Environ 2021 May 29;790:148140. Epub 2021 May 29.

State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; Key Laboratory of Southwest Resources Exploitation and Environmental Hazards Controlling Engineering of Education Ministry, Chongqing University, Chongqing 400044, PR China; College of Environment and Ecology, Chongqing University, Chongqing 400044, PR China.

In the remediation of Cr(VI)-contaminated soils, the effectiveness and long-term stability are critical qualities for the selection of a reductant. In current engineering practices, iron-based materials and sulfides are the most prevalent reductants, and calcium polysulfide (CaS) is considered as the one with the highest effectiveness and strongest long-term stabilization ability. But this opinion is questioned by the high interference ability of CaS to soil Cr(VI) analysis. Read More

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Human health risk assessment in PM10 bound trace elements, Seasonal patterns, and Source apportionment study in a critically polluted coking coalfield area of India.

Integr Environ Assess Manag 2021 Jun 8. Epub 2021 Jun 8.

Department of Environmental Science and Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, Jharkhand, India.

Jharia coalfield (JCF) has been affected by coal mine-fire and subsidence problems for several years. The reason for the emission of particulate pollutants is due to the history of unscientific and unregulated coal mining in the JCF area. In the present study (conducted in the year 2019), seasonal variations, possible causes, and human health hazards of Particulate Matter (PM10) bound trace metals like Cd, Cu, Fe, Cr, Ni, Mn, Co, Pb, Zn and As was estimated. Read More

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Reproduction strategies of the silver birch (Betula pendula Roth) at post-industrial sites.

Sci Rep 2021 Jun 7;11(1):11969. Epub 2021 Jun 7.

Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, 28 Jagiellońska Street, 40-032, Katowice, Poland.

The study aimed to evaluate the parameters of reproductive traits, specimens' fertility and reproductive efficiency observed in Betula pendula populations growing at different types of sites (zinc-lead heaps, coal mine heaps and unpolluted site). The leaf biomass and the biometric characteristics of inflorescences and fructifications were identified. Moreover, the biometric parameters of B. Read More

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Concentrations, transport characteristics, and health risks of PM-bound trace elements over a national park in central India.

J Environ Manage 2021 Jun 4;293:112904. Epub 2021 Jun 4.

Center for Research on Environment and Sustainable Technologies, Indian Indstitute of Science Education and Research Bhopal, India; Earth and Environmental Sciences, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462 066, India. Electronic address:

Fine particulate matter (PM) mass and its chemical constituents were measured over Van Vihar National Park (VVNP) in Bhopal, central India. Fine PM collected over two years onto Teflon filters using a Mini-Vol® sampler were analyzed for trace elements using an Energy Dispersive X-ray fluorescence (ED-XRF) spectrometer. The temporal behaviour, dry deposition fluxes and transport pathways of elements, in addition to their health risks were examined in this study. Read More

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Competitive adsorption of pollutants from anodizing wastewaters to promote water reuse.

J Environ Manage 2021 Jun 4;293:112877. Epub 2021 Jun 4.

Laboratory for Research on Advanced Processes for Water Treatment, Engineering Institute, Campus Juriquilla, Universidad Nacional Autónoma de México (UNAM), Blvd. Juriquilla 3001, 76230, Querétaro, Mexico.

Anodizing wastewater contains principally phosphate (PO) anions according to previous studies, but with the purpose to promote water reuse in this type of industry, a complete characterization of wastewater was made to remove other anions and cations also present in significant concentration. Particularly, the adsorption of sodium (Na), potassium (K), fluoride (F), sulfate (SO) and phosphate (PO) was studied using different sorbents such as: coconut shell activated carbon, bone char, bituminous coal activated carbon, natural zeolite, silica, anionic and cationic exchange resins, a coated manganese-calcium zeolite, coconut shell activated carbon containing iron and iron hydroxide. All sorbents were characterized using FT-IR spectroscopy, potentiometric titration, nitrogen adsorption isotherms at 77 K, X-ray diffraction and SEM/EDX analysis to study the adsorption mechanism. Read More

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Combustion-derived particulate organic matter associated with hemodynamic abnormality and metabolic dysfunction in healthy adults.

J Hazard Mater 2021 May 29;418:126261. Epub 2021 May 29.

Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, and Peking University Institute of Environmental Medicine, Beijing, China; Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, Health Science Center, Peking University, Beijing, China. Electronic address:

Epidemiological evidence on cardiometabolic health of particulate organic matter (POM) and its sources is sparse. In a panel of 73 healthy adults in Beijing, China, daily concentrations of ambient fine particulate matter-bound polycyclic aromatic hydrocarbons (PAHs) and n-alkanes were measured throughout the study period, and Positive Matrix Factorization approach was used to identity PAHs sources. Linear mixed-effect models and mediation analyses were applied to examine the associations and potential interlink pathways between POM and biomarkers indicative of hemodynamics, insulin resistance, vascular calcification and immune inflammation. Read More

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