Results 31 to 40 of about 1,643,449 (356)

Surface chemical properties and pore structure of the activated coke and their effects on the denitrification activity of selective catalytic reduction

open access: yesInternational Journal of Coal Science & Technology, 2019
In order to study the mechanism of selective catalytic reduction of activated coke to remove NO in low-temperature flue gas and provide some theoretical basis for the development of related technologies.
Wei Xie   +4 more
doaj   +1 more source

Underground Disposal of Coal Gangue Backfill in China

open access: yesApplied Sciences, 2022
China’s total coal production in 2021 exceeded 4.13 billion tons, 52% of the world’s total. Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on the ground surface as waste heaps, it occupies large
Weijian Song   +6 more
semanticscholar   +1 more source

Water absorption and salt attack resistance of coal ash brick made of different percentage of foam content [PDF]

open access: yes, 2014
Coal ash which constitute of fly ash and bottom ash were proved to be used as main component in brick production. However, published work on the coal ash brick with addition of foam in order to produce lightweight brick is still lacking. This thesis
Ismail, Sushilawati
core   +1 more source

Comparative Analysis of Pore Structure and Adsorption Characteristics of Coal and Shale

open access: yesMeikuang Anquan, 2020
In this paper, the pore structures of coal and shale were analyzed by the methods of high pressure mercury injection, low pressure N2 and CO2 adsorption.
WU Tengfei, DU Xidong, LI Qiqi
doaj   +1 more source

Hydrogen Flooding of a Coal Core: Effect on Coal Swelling

open access: yesGeophysical Research Letters, 2022
Hydrogen is a clean fuel which has the potential to drastically decarbonize the energy supply chain. However, hydrogen storage is currently a key challenge; one solution to this problem is hydrogen geo‐storage, with which very large quantities of H2 can ...
S. Iglauer   +9 more
semanticscholar   +1 more source

The evaluation of a risk degree for the process of a brown coal spontaneous ignition on dumps with using of modern numeric methods [PDF]

open access: yes, 2018
The article is a summary of information about evaluation of a risk degree for a brown coal spontaneous ignition which is realized on the base of a database analysis of information about the development of stative quantities and desorbated gases in the ...
Blata, Jan   +4 more
core   +1 more source

Global environmental agenda: Developments ahead, sustainable energy-ecological dimensions for Russia, Japan, and Southeast Asia

open access: yesRUDN Journal of Economics, 2022
The study explores the contemporary situation within the global environmental agenda. This topic is vital to humanity and significant in sustainable development for years ahead.
Yana V. Mishchenko
doaj   +1 more source

Determination of Hazardous Zone of Coal Spontaneous Combustion in Ultra-Long Working Face Based on the Gob Porosity Evolution and Flow Field Distribution

open access: yesApplied Sciences, 2023
Coal fire remains one of the main hazards of underground work. Spontaneous coal fires cause serious casualties and property losses. At present, most of the studies on coal spontaneous combustion have been conducted on working faces shorter than 200 m ...
Shuliang Xie   +4 more
doaj   +1 more source

Advanced Modelling of Soil Organic Carbon Content in Coal Mining Areas Using Integrated Spectral Analysis: A Dengcao Coal Mine Case Study

open access: yesInternational Journal of Innovative Science and Research Technology
Effective modelling and integrated spectral analysis approaches can advance modelling precision. To develop an integrated spectral forecast modelling of soil organic carbon (SOC), this research investigated a mining coal in Dengcao Coal Mine Area ...
Gill Ammara, Xiaojun Nie, Chang -hua LIU
semanticscholar   +1 more source

A numerical investigation of hydraulic fracturing on coal seam permeability based on PFC-COMSOL coupling method

open access: yesInternational Journal of Coal Science & Technology, 2022
Hydraulic fracturing and permeability enhancement are effective methods to improve low-permeability coal seams. However, few studies focused on methods to increase permeability, and there are no suitable prediction methods for engineering applications ...
Kai Wang   +6 more
semanticscholar   +1 more source

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