sorption characteristic of coal
"Sorption characteristic of coal, Particle Size, Gas Type
01.01.2009· Sorption characteristics of Bulli seam coal samples were examined with respect to coal particle size, gas type and time. Sorption tests were carried out by the indirect gravimetric method for determining gas content in coal. Various coal particle sizes
Sorption Characteristic of Coal, Particle Size, Gas Type
ABSTRACT: Sorption characteristics of Bulli seam coal samples were examined with respect to coal particle size, gas type and time. Sorption tests were carried out by the indirect gravimetric method for determining gas content in coal. Various coal particle sizes were tested in addition to 54 mm diameter coal core. The other coal sizes were ±15 mm (-5/8+0.530 mesh) cubical blocks and coal
Sorption characteristic of coal, Particle Size, Gas Type
Sorption characteristic of coal, Particle Size, Gas Type and Time. Underground Coal Operators' Conference (pp. 207-215). Wollongong, Australia: University of Wollongong. Underground Coal Operators' Conference (pp. 207-215).
Sorption characteristic of coal as regards of gas mixtures
Coal is a natural sorbent with a diverse character of pore structures which are surrounded by fractures and cleavage planes constituting ideal spaces for the flow and adsorption of gases.
Influence of temperature on coal sorption characteristics
An experimental study was undertaken to examine the sorption and desorption characteristics of coal at temperatures of 35 °C, 45 °C and 55 °C. The study focused on the effect of changes in temperature and coal particle sizes on gas sorption and desorption characteristics.
Comparative study on sorption characteristics of coal
01.08.2019· Chemical and petrographic compositions of coal are the measures of maturity and type of organic matter that control the methane sorption characteristics of the coal. 99% of Indian coal occurrences are contributed by lower Gondwana sequences housed in two major geologic formations, younger Raniganj and older Barakar.
Pore structures and methane sorption characteristics of
01.07.2014· Therefore, after extraction, the methane sorption characteristics of the coal were jointly dependent on the enlargement of the pore structure and the reduction of small organic molecules.
Sorption characteristics and mechanisms of ammonium by
Sorption characteristics and mechanisms of ammonium by coal by-products: slag, honeycomb-cinder and coal gangue L. Y. Zhang • H. Y. Zhang • W. Guo • Y. L. Tian Received: 5 December 2011/Revised: 16 October 2012/Accepted: 23 December 2012/Published online: 13 February 2013 Islamic Azad University (IAU) 2013 Abstract The adsorption behaviors of ammonium from aqueous solutions were
Experimental Study on Damage and Gas Migration
The amount of gas sorption on coal is closely related to coal surface area, which is related to the pore characteristics of coal. Coal characteristics are important factors affecting the content of free gas of coal and determining coal’s gas sorption, diffusion, and seepage, which are basic indicators of the permeability of coal seams.
Sorption characteristics and mechanisms of ammonium by
Sorption characteristics and mechanisms of ammonium by coal by-products: slag, honeycomb-cinder and coal gangue L. Y. Zhang • H. Y. Zhang • W. Guo • Y. L. Tian Received: 5 December 2011/Revised: 16 October 2012/Accepted: 23 December 2012/Published online: 13 February 2013 Islamic Azad University (IAU) 2013 Abstract The adsorption behaviors of ammonium from aqueous solutions were
(PDF) Comparative study on sorption characteristics of
sorption characteristics of coal seams from Barakar and Raniganj formations of Damodar V alley Basin, India, International Journal of Coal Geology, https://doi.or g/10.1016/ j.coal.2019.05.009
Experimental Study on Damage and Gas Migration
Coal and gas outburst is one of the most serious hazards in underground mine operations. In this paper, we explored the damage and gas seepage characteristics of gas-bearing coal samples with different pore structures under methane sorption-sudden unloading conditions using a self-developed experimental apparatus. The results show that (1) the deformation of coal samples can be divided into
Coal sorption characteristics and coal surface tension
Coal sorption characteristics and coal surface tension Coal sorption characteristics and coal surface tension Zhang, Lei ; Ren, Ting ; Aziz, Naj ; Tu, Shihao 2014-01-01 00:00:00 Underground coal mining in the Bulli Seam of Sydney Basin, Australia encounters the problems of coal and gas outburst as the coal contains high concentration of CO2, where certain parts of the seam have been found to
(PDF) Sorption characteristic of coal as regards of gas
PDF | One of the most challenging tasks in the coal mining sector is the detection of endogenous fire risks. Under field conditions, the distance| Find, read and cite all the research you need
Study of coal sorption characteristics and gas drainage in
Different factors influence coal sorption characteristics. Concluded from both dry and moist coals\u27 test results, the adsorbed volume of CO2 and CH4 is decreased with increasing temperature. The adsorption capacity of coal (Langmuir volume) also decreases with coal moisture. Ash content of coal samples and the density of coal determined by helium were found to increase with increasing coal
Sorption Hysteresis Characterization of CH4 and CO2 on
Sorption hysteresis characterization of CH 4 and CO 2 on lignite, bituminous coal, and anthracite were studied to improve the understanding of the interaction between gas molecules and different ranks of coal and further improve the precision of the adsorption methods in characterizing pore structure at low pressure. Pore structure of three ranks of coal was investigated with scanning electron
Carbon dioxide sorption/ desorption characteristics of
Carbon dioxide sorption/ desorption characteristics of coals in Taiwan Chien-Hung, Hsiao; Loung-Yie, Tsai; Abstract. Geological sequestration of CO2 into depleted oil reservoir, saline aquifer or unmineable coal seam is now being actively investigated for the purpose of reducing greenhouse gas in the atmosphere. Understanding the physical, chemical, and thermodynamic phenomena occurred with
Influence of coal particle size on coal adsorption and
Hence, coal particle size had a significant influence on the coal sorption characteristics including sorption capacity and desorption hysteresis for CO2 and CH4, especially calculated with dry basis of coal. In this study, the 150-212 um (150 um) coal samples achieved higher sorption capacity and followed by 2.36-3.35 mm (2.4 mm), 8-9.5 mm (8 mm) and 16-19 mm (16 mm) particle size samples
Adsorption characteristics of coal in constant-pressure
Full Text; PDF (469 K) PDF-Plus (244 K) Citing articles; Adsorption characteristics of coal in constant-pressure tests. Ali Sabir, a R. J. Chalaturnyk b a GeoEngineering Centre at Queen’s–RMC, Queen’s University, Kingston, ON K7L 3N6, Canada.. b Geotechnical Engineering, University of Alberta, 3-070 Markin/CNRL Natural Resources, Engineering Facility, Edmonton, AB T6G 2W2, Canada.
Study of coal sorption characteristics and gas drainage in
Different factors influence coal sorption characteristics. Concluded from both dry and moist coals\u27 test results, the adsorbed volume of CO2 and CH4 is decreased with increasing temperature. The adsorption capacity of coal (Langmuir volume) also decreases with coal moisture.
In situ characterization of the transport and sorption
Central to the proposed inverse solution technique is a specially structured artificial neural network (ANN). The most important transport and sorption characteristics of coal seams are butt and face cleat permeabilities, macropore porosity, Langmuir volume constant, Langmuir pressure constant, and
Influence of coal particle size on coal adsorption and
Coal with larger particle size had higher ash content and higher helium density. The sorption isotherm was found to be highly sensitive with helium density of coal which was determined in the procedure of testing the void volume of sample cell.
Influence of temperature on coal sorption characteristics
The theory of coal surface free energy can be used to explain the coal sorption characteristics with CO2 at higher temperatures. Results from this study have useful implication for enhanced CBM and gas drainage in coal mines
Influence of coal particle size on coal adsorption and
Coal with larger particle size had higher ash content and higher helium density. The sorption isotherm was found to be highly sensitive with helium density of coal which was determined in the procedure of testing the void volume of sample cell.
Hydrogen sorption characteristics of Zonguldak region coal
Abstract−Hydrogen sorption characteristics of activated carbons (ACs) produced by physical and chemical activa-tions from two coal mines (Kilimli and Armutcuk) in the Zonguldak region, Turkey were investigated by a volumetric technique at 77 K. H2 adsorption isotherms were obtained on the samples exposed to pyrolytic thermal treatments in a temperature range of 600-900oC under N 2 flow and
Carbon dioxide sorption/ desorption characteristics of
Carbon dioxide sorption/ desorption characteristics of coals in Taiwan NASA/ADS Geological sequestration of CO2 into depleted oil reservoir, saline aquifer or unmineable coal seam is now being actively investigated for the purpose of reducing greenhouse gas in the atmosphere.
Adsorption characteristics of coal in constant-pressure
Adsorption characteristics of coal have traditionally been studied using crushed coal specimens. When adsorption tests are run on a crushed coal specimen, adsorption kinematics are not involved and therefore the equilibrium of gases is attained rapidly.
Sorption Characteristics of Polycyclic Aromatic
To elucidate the dominant carbonaceous phase controlling the environmental fate of PAH in aluminum smelter residues (coke BC and/or coal tar), the sorptive behavior of PAHs has been determined, using passive samplers and infinite-sink desorption methods.
Influence of coal properties on the CO2 adsorption
The coals are arranged according to their vitrinite content. The coals with diverse characteristics were selected to determine the effect of coal properties on the sorption capacities of gasified chars. The gasified char sample preparation and the adsorption measurements were carried out on large particles in the size range of 3.35–4.75 mm.
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