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The coal selected for experiments was a bituminous steam coal with %wt ash content. The shale sample was characterized by rather low TOC (%) but high clay minerals content. The purpose of the study was to compare the high pressure CO 2 sorption characteristics of coal and gas shale and relate it to the particle size of samples subjected ...
Influence of temperature on coal sorption characteristics and the theory of coal surface free energy Lei Zhanga,*, Naj Aziza, Ting X Rena, Zhongwei Wanga a University of Wollongong, Wollongong, NSW2500, Australia Abstract An experimental study was undertaken to examine the sorption and desorption characteristics of coal at
Request PDF on ResearchGate | Coal sorption characteristics and coal surface tension | Underground coal mining in the Bulli Seam of Sydney Basin, Australia encounters the problems of coal .
Oct 10, 2009· 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.
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 ...
The injection of CO 2 into deep coal beds can not only improve the recovery of CH 4, but also contribute to the geological sequestration of CO adsorption characteristics of coal determine the amount of the greenhouse gas that deep coal seams can store in place. Using selfdeveloped adsorption facility of supercritical fluids, this paper studied the adsorption behavior of supercritical CO ...
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.
Sorption characteristics and mechanisms of ammonium by coal ... honeycombcinder and coal gangue. The ammonium sorption processes were well modeled by the pseudo secondorder model (R2 [). The experimental data were fitted to both the Langmuir model and the Fre
examined a thesis titled "Seismic characteristics and strain of coal during the sorption of CO 2 and CH 4," presented by Padmavathi Iyengar, candidate for the Master of Science Degree, and certify that in their opinion it is worthy of acceptance. Supervisory committtee Jejung Lee,, Committee Chair Department of Geosciences
Abstract. Methane production from coal seams has been actively pursued in the since the mid1970''s. This resource is regarded as an unconventional natural gas supply due to several unique characteristics of the reservoir, including: twophase (water and gas) flow, low effective permeability to gas, and the majority Of the methane being held in an adsorbed state on the internal surfaces of ...
Introduction Gas sorption in coal has been studied over the years by many researchers [1, 2, 3], and in recent years, the coal sorption characteristics at high temperatures, beyond the normal temperature of 20 ~ 29 °C, have been identified as an attractive option which can shed light on the behaviour of gas * Corresponding author.
Abstract: Adsorption deformation significantly affects the seepage characteristics of coal. However, effect of sorption time on coal permeability and gas pressure has not been investigated systematically. In this study, the sorption experiment of coal samples is conducted to elaborate the importance of sorption equilibration time.
Abstract. Enhanced coalbed methane (ECBM) in deep coal seams is being actively investigated around the world. Since the in situ coal seams are always saturated with water, methane sorption behavior on coal in the presence of water can help accurately assess the amount of recoverable methane.
Sorption processes can be used to study different characteristics of coal properties, such as gas content (coalbed methane potential of a deposit), gas diffusion, porosity, internal surface area ...
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.
PDF | Hydrogen sorption characteristics of activated carbons (ACs) produced by physical and chemical activations from two coal mines (Kilimli and Armutcuk) in the Zonguldak region, Turkey were ...
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 ...
2009 Coal Operators'' Conference The AusIMM Illawarra Branch 208 12 – 13 February 2009 SORPTION CHARACTERISTIC OF COAL, PARTICLE SIZE, GAS TYPE AND TIME Raul Florentin1, Naj Aziz1, Dennis Black1 and Long Nghiem1 ABSTRACT: Sorption characteristics of Bulli seam coal samples were examined with respect to coal particle size, gas type and time.
Dec 15, 2017· The adsorptionswelling and permeability characteristics of natural and reconstituted anthracite coals. ... Permeability characteristic of coal in the stressstrain course has been investigated in previous papers, ... S. HołdaChanges in mechanical properties of coal due to sorption .
Sorption characteristic of coal, Particle Size, Gas Type and Time. Underground Coal Operators'' Conference (pp. 207215). Wollongong, Australia: University of Wollongong.
Jan 01, 2014· Read "Coal sorption characteristics and coal surface tension, International Journal of Oil, Gas and Coal Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Nie et al. (2016) performed experiments of sorption characteristics of methane in various rank coal samples at different moisture contents and concluded that the effect of moisture content on a ...
The study of gas sorption characteristics is important for practical assessment of coal bed methane (CBM) production and CO2 sequestration in coal seam.
Role of coal type and rank on methane sorption characteristics of Bowen Basin, Australia coals. ... The Langmuir volume (V L) physically represents the monolayer adsorption capacity of the coal and is an important characteristic of the samples. The Langmuir pressure (P L) ...
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