Results 41 to 50 of about 359,370 (309)

STUDYING THE POSSIBILITY OF USING RED-BROWN CLAY FOR RECLAMATION OF COAL WASTE DUMPS [PDF]

open access: yes, 2018
The coal mining industry, as the source of the main fuel resource and the main energy resource, has particular importance for Ukraine.
Heilmeier, Hermann   +1 more
core  

Sustainable Graphene Oxide–Intercalated Bentonite Composite for the Effective Removal of Imidacloprid From Water: Adsorption Performance, Isotherm, and Kinetics

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Water is a fundamental necessity for our existence, but its rapid contamination is causing devastating effects on the environment and health of living species worldwide. Adsorptive removal of pollutants is one of the popular water treatment techniques because of its simplicity, affordability, and the broad range of available adsorbents.
Priyanka Negi   +3 more
wiley   +1 more source

Experimental study on mechanical and fracture-seepage characteristics of sandstone under hydro-mechanical coupling

open access: yesMeikuang Anquan
In order to explore the fluid-solid coupling feedback characteristics of rock under the action of hydro-mechanical coupling, the triaxial and pore water pressure loading tests of saturated sandstone were carried out by using the rock mechanics ...
Jiawei LI   +4 more
doaj   +1 more source

Development and application of coal burst experiment system based on local mine stiffness theory

open access: yesMeitan xuebao, 2023
The loading mine stiffness and the post-peak stiffness of a coal pillar are important factors affecting the occurrence of coal bursts. In order to systematically study the mechanism of coal bursts and pillar bursts based on local mine stiffness theory, a
Fuqiang GAO   +4 more
doaj   +1 more source

Construction of Lean Coal Molecular Structure Model Based on Spectroscopic Characterization

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The chemical structure of coal exerts a profound influence on its properties and utilization pathways. A comprehensive analysis of coal's molecular structure is crucial for mitigating environmental pollution arising from coal combustion and improving the efficiency of coal utilization.
Song Liu   +5 more
wiley   +1 more source

Investigation of nanoindentation for evaluating the cyclic loading-unloading mechanical properties of heterogeneous coal

open access: yesRock Mechanics Bulletin
Exploring the meso-mechanical response of heterogeneous coal is crucial for understanding its macro mechanical behavior in coal mining, CO2 storage, and coal bed methane production.
YuKai Fu   +5 more
doaj   +1 more source

THE IMPACT OF COAL WASTE HEAPS ON THE ENVIRONMENT OF SOKAL DISTRICT OF LVIV REGION [PDF]

open access: yes, 2018
The environmental situation in Sokal district is one of the most complicated in Lviv region, which is caused by man-made environmental impact of mining, coal preparation and chemical industries.
Popovych, Vasyl, Voloshchyshyn, Andriy
core  

A modern vision of simulation modelling in mining and near mining activity [PDF]

open access: yes, 2018
The paper represents the creation of the software simulation system, which reproduce the basic processes of mining and near production. It presents the consideration of such systems for both traditional and non-traditional
Cabana, Edgar   +12 more
core   +1 more source

Socioenvironmental implications of Jatropha curcas cultivation for biodiesel supply in postmining communities

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The long‐term viability of Jatropha curcas as a biodiesel feedstock has been widely debated. Many early initiatives failed to deliver consistent economic returns despite promising environmental attributes. This study re‐evaluated J. curcas‐based systems within an integrated environmental–economic framework, focusing on their potential role in ...
Eduardo Sansão Sozinho Maurício   +3 more
wiley   +1 more source

Case study of hydraulic fracturing for coal burst risk mitigation

open access: yesInternational Journal of Coal Science & Technology
Coal bursts pose significant safety and operational challenges in deep mining environments, necessitating effective mitigation strategies to address high-stress concentrations and dynamic failure risks.
Hongpu Kang   +4 more
doaj   +1 more source

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