Pure methane, carbon dioxide, and nitrogen adsorption on anthracite from China over a wide range of pressures and temperatures: experiments and modeling

Zhang, Yi; Xing, Wanli; Liu, Shuyang; Liu, Yu; Yang, Mingjun; Zhao, Jiafei; Song, Yongchen

doi:10.1039/c5ra05745k

Cited by 38 publications

(51 citation statements)

References 54 publications

(93 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorbed phase densities ρ a for CO 2 and CH 4 were 1.027 and 0.421 g/cm 3 respectively [25][26][27][28][29]. Furthermore, the adsorption capacity of the surface was expressed by n L , and the gas density (when adsorption was half the maximum) was expressed by ρ L .…”

Section: Langmuir + K Modelmentioning

confidence: 99%

“…where ρ t represents the adsorbed phase density in layer t and ρ g represents the bulk phase density. The absorbed phase densities ρ a for CO 2 and CH 4 were assumed to be 1.027 and 0.421 g/cm 3 , respectively [25][26][27][28][29]. In this work, only monolayer adsorption was assumed, for the sake of simplification, and the equation was expressed as ln…”

Section: Ono-kondo Lattice Modelmentioning

confidence: 99%

“…where C represents a prefactor that correlated with the adsorption capacity and varied with different adsorbents and gases. In this study, the parameters ρ 1 , C, and ε is /k were obtained from the regression fitting while other parameters were obtained from published values [29,31].…”

Section: Ono-kondo Lattice Modelmentioning

confidence: 99%

See 2 more Smart Citations

Thermodynamics and Kinetics of CO2/CH4 Adsorption on Shale from China: Measurements and Modeling

Chi

Zhao

et al. 2019

Energies

Self Cite

View full text Add to dashboard Cite

CO2-enhanced shale gas recovery (CO2-ESGR) sequestrates anthropogenic CO2 and improves the profitability of shale gas exploitation. This work investigated the adsorption behaviors of CO2 and CH4 on shale from China at 20, 40, 60 and 80 °C. The pressure ranges for CO2 and CH4 were 1–5 and 1–15 MPa, respectively. The excess adsorbed amount of CH4 increased with increasing pressure from the beginning to the end, while the maximum excess CO2 adsorption was observed at approximately 4 MPa. The absolute average deviations (AADs) of CO2 and CH4, determined by the Langmuir + k model, were 2.12–3.10% and 0.88–1.11%, respectively. Relatively good adsorptivity for CO2 was exhibited when the pressure was less than 5 MPa, which was beneficial to the implementation of CO2-ESGR. With continuous increases in pressure, the adsorption capacity of CO2 was weaker than that of CH4, suggesting that the injected CO2 would reduce the partial pressure of CH4 for CO2-ESGR and the displacement effect would no longer be significant. In addition, the adsorption rate of CO2 was much faster than that of CH4. CO2 was more active in the competitive adsorption and it was advantageous to the efficiency of CO2-ESGR.

show abstract

Section: Langmuir + K Modelmentioning

confidence: 99%

Section: Ono-kondo Lattice Modelmentioning

confidence: 99%

See 1 more Smart Citation

Thermodynamics and Kinetics of CO2/CH4 Adsorption on Shale from China: Measurements and Modeling

Chi

Zhao

et al. 2019

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

“…Different hysteresis behavior have been reported, at conditions beyond which capillary condensation can occur, mostly through experimental studies, in methane-coal, carbon dioxide-coal and nitrogen-coal systems [7,[15][16][17]. However, very few literatures exist on shale gas desorption isotherms and by implication, limited resources exist on shale gas sorption hysteresis in spite of the large volume of published work on shale gas adsorption isotherms [7,16,[18][19][20]. While it is not exactly clear why shale gas desorption is not so widely studied like adsorption, despite that it is clearly understood that desorption is akin to shale gas production, it can be speculated that the assumption that the Langmuir isotherm is valid for modeling shale gas sorption processes invariably makes researchers assume that the desorption isotherm should be exactly the same as the adsorption isotherm.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Gas Production from Gas Shale Reservoirs—Influence of Gas Sorption Hysteresis

Ekundayo

Rezaee

2019

Energies

View full text Add to dashboard Cite

The true contribution of gas desorption to shale gas production is often overshadowed by the use of adsorption isotherms for desorbed gas calculations on the assumption that both processes are identical under high pressure, high temperature conditions. In this study, three shale samples were used to study the adsorption and desorption isotherms of methane at a temperature of 80 °C, using volumetric method. The resulting isotherms were modeled using the Langmuir model, following the conversion of measured excess amounts to absolute values. All three samples exhibited significant hysteresis between the sorption processes and the desorption isotherms gave lower Langmuir parameters than the corresponding adsorption isotherms. Langmuir volume showed positive correlation with total organic carbon (TOC) content for both sorption processes. A compositional three-dimensional (3D), dual-porosity model was then developed in GEM® (a product of the Computer Modelling Group (CMG) Ltd., Calgary, AB, Canada) to test the effect of the observed hysteresis on shale gas production. For each sample, a base scenario, corresponding to a “no-sorption” case was compared against two other cases; one with adsorption Langmuir parameters (adsorption case) and the other with desorption Langmuir parameters (desorption case). The simulation results showed that while gas production can be significantly under-predicted if gas sorption is not considered, the use of adsorption isotherms in lieu of desorption can lead to over-prediction of gas production performances.

show abstract

“…Present study intends to investigate adsorption behavior of methane and carbon dioxide on few Indian shales and also examine applicability of different AI models to adsorption on some Indian shales to find the most accurate AI model. Background of different AI models (Langmuir model, BET model, Dubinin-Astakhov (D-A) model, Dubinin-Radushkevich (D-R) model, and Ono-Kondo model) have been discussed extensively by previous researchers and hence is not included in the manuscript [17,[27][28][29][30][31][32][33][34][35][37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Applicability of various adsorption isotherm models on adsorption of methane and CO₂ on Indian shales

Rani

Prusty

Padmanabhan

et al. 2019

Env Prog and Sustain Energy

View full text Add to dashboard Cite

To produce natural gas (methane) and simultaneously sequester CO2 in unconventional geologic reservoirs such as gas shale, coalbeds and so on, it is necessary to understand the adsorption behavior of methane and CO2 in these reservoir formations. In this article, adsorption behavior of methane and CO2 on shale samples from Gondwana Basin and KG Basin of India are studied. Adsorption experiments are conducted on as‐received shale samples from these basins at a temperature of 313 K to a maximum equilibrium pressure of approximately 9 MPa for methane and 6 MPa for CO2. The methane and CO2 adsorption data are applied to test the applicability of Langmuir, Dubinin‐Polanyi, BET, and Ono‐Kondo models. A comparison of these models is performed using linear and nonlinear Chi‐squared methods. It was observed that Dubinin‐Astakhov equation was the most accurate adsorption isotherm model for adsorption of methane and CO2 on tested shales. Further, the better fitting by Dubinin‐Polanyi equation over BET, Langmuir, and Ono‐Kondo models suggest that the mechanism of volume filling may be applicable during the adsorption of methane and CO2 on shales. The preferential adsorption of methane and carbon dioxide on Pakur, KG, and Salanpur shales were investigated. The Pakur shale had CO2:CH4 adsorption ratio ~1. © 2019 American Institute of Chemical Engineers Environ Prog, 38: 13222, 2019

show abstract

Pure methane, carbon dioxide, and nitrogen adsorption on anthracite from China over a wide range of pressures and temperatures: experiments and modeling

Abstract: The adsorption isotherms and kinetics characteristics were investigated at 294 K, 311 K, 333 K, and 353 K with pressures up to 18 MPa for CH4 and N2 and 5.5 MPa for CO2 on anthracite from China using a volumetric method.

Cited by 38 publications

References 54 publications

Thermodynamics and Kinetics of CO2/CH4 Adsorption on Shale from China: Measurements and Modeling

Thermodynamics and Kinetics of CO2/CH4 Adsorption on Shale from China: Measurements and Modeling

Numerical Simulation of Gas Production from Gas Shale Reservoirs—Influence of Gas Sorption Hysteresis

Applicability of various adsorption isotherm models on adsorption of methane and CO₂ on Indian shales

Contact Info

Product

Resources

About

Pure methane, carbon dioxide, and nitrogen adsorption on anthracite from China over a wide range of pressures and temperatures: experiments and modeling

Abstract: The adsorption isotherms and kinetics characteristics were investigated at 294 K, 311 K, 333 K, and 353 K with pressures up to 18 MPa for CH4 and N2 and 5.5 MPa for CO2 on anthracite from China using a volumetric method.

Cited by 38 publications

References 54 publications

Thermodynamics and Kinetics of CO2/CH4 Adsorption on Shale from China: Measurements and Modeling

Thermodynamics and Kinetics of CO2/CH4 Adsorption on Shale from China: Measurements and Modeling

Numerical Simulation of Gas Production from Gas Shale Reservoirs—Influence of Gas Sorption Hysteresis

Applicability of various adsorption isotherm models on adsorption of methane and CO2 on Indian shales

Contact Info

Product

Resources

About

Applicability of various adsorption isotherm models on adsorption of methane and CO₂ on Indian shales